diff options
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 88 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/anx7625.c | 1850 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/anx7625.h | 390 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 1002 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/lvds-codec.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/sii902x.c | 100 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358764.c | 107 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-sn65dsi86.c | 146 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-tpd12s015.c | 2 |
15 files changed, 3533 insertions, 195 deletions
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index ef91646441b1..e4110d6ca7b3 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -61,6 +61,19 @@ config DRM_LONTIUM_LT9611 HDMI signals Please say Y if you have such hardware. +config DRM_LONTIUM_LT9611UXC + tristate "Lontium LT9611UXC DSI/HDMI bridge" + select SND_SOC_HDMI_CODEC if SND_SOC + depends on OF + select DRM_PANEL_BRIDGE + select DRM_KMS_HELPER + select REGMAP_I2C + help + Driver for Lontium LT9611UXC DSI to HDMI bridge + chip driver that converts dual DSI and I2S to + HDMI signals + Please say Y if you have such hardware. + config DRM_LVDS_CODEC tristate "Transparent LVDS encoders and decoders support" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index 2b3aff104e46..86e7acc76f8d 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o obj-$(CONFIG_DRM_CHRONTEL_CH7033) += chrontel-ch7033.o obj-$(CONFIG_DRM_DISPLAY_CONNECTOR) += display-connector.o obj-$(CONFIG_DRM_LONTIUM_LT9611) += lontium-lt9611.o +obj-$(CONFIG_DRM_LONTIUM_LT9611UXC) += lontium-lt9611uxc.o obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c index f101dd2819b5..45838bd08d37 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c @@ -55,9 +55,9 @@ static int adv7511_update_cts_n(struct adv7511 *adv7511) return 0; } -int adv7511_hdmi_hw_params(struct device *dev, void *data, - struct hdmi_codec_daifmt *fmt, - struct hdmi_codec_params *hparms) +static int adv7511_hdmi_hw_params(struct device *dev, void *data, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms) { struct adv7511 *adv7511 = dev_get_drvdata(dev); unsigned int audio_source, i2s_format = 0; diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig index e1fa7d820373..024ea2a570e7 100644 --- a/drivers/gpu/drm/bridge/analogix/Kconfig +++ b/drivers/gpu/drm/bridge/analogix/Kconfig @@ -25,3 +25,12 @@ config DRM_ANALOGIX_ANX78XX config DRM_ANALOGIX_DP tristate depends on DRM + +config DRM_ANALOGIX_ANX7625 + tristate "Analogix Anx7625 MIPI to DP interface support" + depends on DRM + depends on OF + help + ANX7625 is an ultra-low power 4K mobile HD transmitter + designed for portable devices. It converts MIPI/DPI to + DisplayPort1.3 4K. diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile index 97669b374098..44da392bb9f9 100644 --- a/drivers/gpu/drm/bridge/analogix/Makefile +++ b/drivers/gpu/drm/bridge/analogix/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only analogix_dp-objs := analogix_dp_core.o analogix_dp_reg.o analogix-i2c-dptx.o obj-$(CONFIG_DRM_ANALOGIX_ANX6345) += analogix-anx6345.o +obj-$(CONFIG_DRM_ANALOGIX_ANX7625) += anx7625.o obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp.o diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index 914c569ab8c1..cab6c8b92efd 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -524,94 +524,6 @@ void analogix_dp_enable_sw_function(struct analogix_dp_device *dp) writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1); } -int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp) -{ - int reg; - int retval = 0; - int timeout_loop = 0; - - /* Enable AUX CH operation */ - reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2); - reg |= AUX_EN; - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2); - - /* Is AUX CH command reply received? */ - reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA); - while (!(reg & RPLY_RECEIV)) { - timeout_loop++; - if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) { - dev_err(dp->dev, "AUX CH command reply failed!\n"); - return -ETIMEDOUT; - } - reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA); - usleep_range(10, 11); - } - - /* Clear interrupt source for AUX CH command reply */ - writel(RPLY_RECEIV, dp->reg_base + ANALOGIX_DP_INT_STA); - - /* Clear interrupt source for AUX CH access error */ - reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA); - if (reg & AUX_ERR) { - writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA); - return -EREMOTEIO; - } - - /* Check AUX CH error access status */ - reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA); - if ((reg & AUX_STATUS_MASK) != 0) { - dev_err(dp->dev, "AUX CH error happens: %d\n\n", - reg & AUX_STATUS_MASK); - return -EREMOTEIO; - } - - return retval; -} - -int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp, - unsigned int reg_addr, - unsigned char data) -{ - u32 reg; - int i; - int retval; - - for (i = 0; i < 3; i++) { - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); - - /* Select DPCD device address */ - reg = AUX_ADDR_7_0(reg_addr); - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); - reg = AUX_ADDR_15_8(reg_addr); - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); - reg = AUX_ADDR_19_16(reg_addr); - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); - - /* Write data buffer */ - reg = (unsigned int)data; - writel(reg, dp->reg_base + ANALOGIX_DP_BUF_DATA_0); - - /* - * Set DisplayPort transaction and write 1 byte - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = analogix_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); - } - - return retval; -} - void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype) { u32 reg; diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c new file mode 100644 index 000000000000..65cc05982f82 --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -0,0 +1,1850 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. + * + */ +#include <linux/gcd.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/iopoll.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/workqueue.h> + +#include <linux/of_gpio.h> +#include <linux/of_graph.h> +#include <linux/of_platform.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_dp_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_of.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> +#include <drm/drm_probe_helper.h> + +#include <video/display_timing.h> + +#include "anx7625.h" + +/* + * There is a sync issue while access I2C register between AP(CPU) and + * internal firmware(OCM), to avoid the race condition, AP should access + * the reserved slave address before slave address occurs changes. + */ +static int i2c_access_workaround(struct anx7625_data *ctx, + struct i2c_client *client) +{ + u8 offset; + struct device *dev = &client->dev; + int ret; + + if (client == ctx->last_client) + return 0; + + ctx->last_client = client; + + if (client == ctx->i2c.tcpc_client) + offset = RSVD_00_ADDR; + else if (client == ctx->i2c.tx_p0_client) + offset = RSVD_D1_ADDR; + else if (client == ctx->i2c.tx_p1_client) + offset = RSVD_60_ADDR; + else if (client == ctx->i2c.rx_p0_client) + offset = RSVD_39_ADDR; + else if (client == ctx->i2c.rx_p1_client) + offset = RSVD_7F_ADDR; + else + offset = RSVD_00_ADDR; + + ret = i2c_smbus_write_byte_data(client, offset, 0x00); + if (ret < 0) + DRM_DEV_ERROR(dev, + "fail to access i2c id=%x\n:%x", + client->addr, offset); + + return ret; +} + +static int anx7625_reg_read(struct anx7625_data *ctx, + struct i2c_client *client, u8 reg_addr) +{ + int ret; + struct device *dev = &client->dev; + + i2c_access_workaround(ctx, client); + + ret = i2c_smbus_read_byte_data(client, reg_addr); + if (ret < 0) + DRM_DEV_ERROR(dev, "read i2c fail id=%x:%x\n", + client->addr, reg_addr); + + return ret; +} + +static int anx7625_reg_block_read(struct anx7625_data *ctx, + struct i2c_client *client, + u8 reg_addr, u8 len, u8 *buf) +{ + int ret; + struct device *dev = &client->dev; + + i2c_access_workaround(ctx, client); + + ret = i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf); + if (ret < 0) + DRM_DEV_ERROR(dev, "read i2c block fail id=%x:%x\n", + client->addr, reg_addr); + + return ret; +} + +static int anx7625_reg_write(struct anx7625_data *ctx, + struct i2c_client *client, + u8 reg_addr, u8 reg_val) +{ + int ret; + struct device *dev = &client->dev; + + i2c_access_workaround(ctx, client); + + ret = i2c_smbus_write_byte_data(client, reg_addr, reg_val); + + if (ret < 0) + DRM_DEV_ERROR(dev, "fail to write i2c id=%x\n:%x", + client->addr, reg_addr); + + return ret; +} + +static int anx7625_write_or(struct anx7625_data *ctx, + struct i2c_client *client, + u8 offset, u8 mask) +{ + int val; + + val = anx7625_reg_read(ctx, client, offset); + if (val < 0) + return val; + + return anx7625_reg_write(ctx, client, offset, (val | (mask))); +} + +static int anx7625_write_and(struct anx7625_data *ctx, + struct i2c_client *client, + u8 offset, u8 mask) +{ + int val; + + val = anx7625_reg_read(ctx, client, offset); + if (val < 0) + return val; + + return anx7625_reg_write(ctx, client, offset, (val & (mask))); +} + +static int anx7625_write_and_or(struct anx7625_data *ctx, + struct i2c_client *client, + u8 offset, u8 and_mask, u8 or_mask) +{ + int val; + + val = anx7625_reg_read(ctx, client, offset); + if (val < 0) + return val; + + return anx7625_reg_write(ctx, client, + offset, (val & and_mask) | (or_mask)); +} + +static int anx7625_read_ctrl_status_p0(struct anx7625_data *ctx) +{ + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS); +} + +static int wait_aux_op_finish(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int val; + int ret; + + ret = readx_poll_timeout(anx7625_read_ctrl_status_p0, + ctx, val, + (!(val & AP_AUX_CTRL_OP_EN) || (val < 0)), + 2000, + 2000 * 150); + if (ret) { + DRM_DEV_ERROR(dev, "aux operation fail!\n"); + return -EIO; + } + + val = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS); + if (val < 0 || (val & 0x0F)) { + DRM_DEV_ERROR(dev, "aux status %02x\n", val); + val = -EIO; + } + + return val; +} + +static int anx7625_video_mute_control(struct anx7625_data *ctx, + u8 status) +{ + int ret; + + if (status) { + /* Set mute on flag */ + ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_MIPI_MUTE); + /* Clear mipi RX en */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, (u8)~AP_MIPI_RX_EN); + } else { + /* Mute off flag */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, (u8)~AP_MIPI_MUTE); + /* Set MIPI RX EN */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_MIPI_RX_EN); + } + + return ret; +} + +static int anx7625_config_audio_input(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + /* Channel num */ + ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_6, I2S_CH_2 << 5); + + /* FS */ + ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_4, + 0xf0, AUDIO_FS_48K); + /* Word length */ + ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_5, + 0xf0, AUDIO_W_LEN_24_24MAX); + /* I2S */ + ret |= anx7625_write_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_6, I2S_SLAVE_MODE); + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, + AUDIO_CONTROL_REGISTER, ~TDM_TIMING_MODE); + /* Audio change flag */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_AUDIO_CHG); + + if (ret < 0) + DRM_DEV_ERROR(dev, "fail to config audio.\n"); + + return ret; +} + +/* Reduction of fraction a/b */ +static void anx7625_reduction_of_a_fraction(unsigned long *a, unsigned long *b) +{ + unsigned long gcd_num; + unsigned long tmp_a, tmp_b; + u32 i = 1; + + gcd_num = gcd(*a, *b); + *a /= gcd_num; + *b /= gcd_num; + + tmp_a = *a; + tmp_b = *b; + + while ((*a > MAX_UNSIGNED_24BIT) || (*b > MAX_UNSIGNED_24BIT)) { + i++; + *a = tmp_a / i; + *b = tmp_b / i; + } + + /* + * In the end, make a, b larger to have higher ODFC PLL + * output frequency accuracy + */ + while ((*a < MAX_UNSIGNED_24BIT) && (*b < MAX_UNSIGNED_24BIT)) { + *a <<= 1; + *b <<= 1; + } + + *a >>= 1; + *b >>= 1; +} + +static int anx7625_calculate_m_n(u32 pixelclock, + unsigned long *m, + unsigned long *n, + u8 *post_divider) +{ + if (pixelclock > PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN) { + /* Pixel clock frequency is too high */ + DRM_ERROR("pixelclock too high, act(%d), maximum(%lu)\n", + pixelclock, + PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN); + return -EINVAL; + } + + if (pixelclock < PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX) { + /* Pixel clock frequency is too low */ + DRM_ERROR("pixelclock too low, act(%d), maximum(%lu)\n", + pixelclock, + PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX); + return -EINVAL; + } + + for (*post_divider = 1; + pixelclock < (PLL_OUT_FREQ_MIN / (*post_divider));) + *post_divider += 1; + + if (*post_divider > POST_DIVIDER_MAX) { + for (*post_divider = 1; + (pixelclock < + (PLL_OUT_FREQ_ABS_MIN / (*post_divider)));) + *post_divider += 1; + + if (*post_divider > POST_DIVIDER_MAX) { + DRM_ERROR("cannot find property post_divider(%d)\n", + *post_divider); + return -EDOM; + } + } + + /* Patch to improve the accuracy */ + if (*post_divider == 7) { + /* 27,000,000 is not divisible by 7 */ + *post_divider = 8; + } else if (*post_divider == 11) { + /* 27,000,000 is not divisible by 11 */ + *post_divider = 12; + } else if ((*post_divider == 13) || (*post_divider == 14)) { + /* 27,000,000 is not divisible by 13 or 14 */ + *post_divider = 15; + } + + if (pixelclock * (*post_divider) > PLL_OUT_FREQ_ABS_MAX) { + DRM_ERROR("act clock(%u) large than maximum(%lu)\n", + pixelclock * (*post_divider), + PLL_OUT_FREQ_ABS_MAX); + return -EDOM; + } + + *m = pixelclock; + *n = XTAL_FRQ / (*post_divider); + + anx7625_reduction_of_a_fraction(m, n); + + return 0; +} + +static int anx7625_odfc_config(struct anx7625_data *ctx, + u8 post_divider) +{ + int ret; + struct device *dev = &ctx->client->dev; + + /* Config input reference clock frequency 27MHz/19.2MHz */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, + ~(REF_CLK_27000KHZ << MIPI_FREF_D_IND)); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, + (REF_CLK_27000KHZ << MIPI_FREF_D_IND)); + /* Post divider */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, + MIPI_DIGITAL_PLL_8, 0x0f); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_8, + post_divider << 4); + + /* Add patch for MIS2-125 (5pcs ANX7625 fail ATE MBIST test) */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, + ~MIPI_PLL_VCO_TUNE_REG_VAL); + + /* Reset ODFC PLL */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, + ~MIPI_PLL_RESET_N); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, + MIPI_PLL_RESET_N); + + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error.\n"); + + return ret; +} + +static int anx7625_dsi_video_timing_config(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + unsigned long m, n; + u16 htotal; + int ret; + u8 post_divider = 0; + + ret = anx7625_calculate_m_n(ctx->dt.pixelclock.min * 1000, + &m, &n, &post_divider); + + if (ret) { + DRM_DEV_ERROR(dev, "cannot get property m n value.\n"); + return ret; + } + + DRM_DEV_DEBUG_DRIVER(dev, "compute M(%lu), N(%lu), divider(%d).\n", + m, n, post_divider); + + /* Configure pixel clock */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_L, + (ctx->dt.pixelclock.min / 1000) & 0xFF); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_H, + (ctx->dt.pixelclock.min / 1000) >> 8); + /* Lane count */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_0, 0xfc); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_0, 3); + + /* Htotal */ + htotal = ctx->dt.hactive.min + ctx->dt.hfront_porch.min + + ctx->dt.hback_porch.min + ctx->dt.hsync_len.min; + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_TOTAL_PIXELS_L, htotal & 0xFF); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_TOTAL_PIXELS_H, htotal >> 8); + /* Hactive */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_ACTIVE_PIXELS_L, ctx->dt.hactive.min & 0xFF); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_ACTIVE_PIXELS_H, ctx->dt.hactive.min >> 8); + /* HFP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_FRONT_PORCH_L, ctx->dt.hfront_porch.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_FRONT_PORCH_H, + ctx->dt.hfront_porch.min >> 8); + /* HWS */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_SYNC_WIDTH_L, ctx->dt.hsync_len.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_SYNC_WIDTH_H, ctx->dt.hsync_len.min >> 8); + /* HBP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_BACK_PORCH_L, ctx->dt.hback_porch.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_BACK_PORCH_H, ctx->dt.hback_porch.min >> 8); + /* Vactive */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_L, + ctx->dt.vactive.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_H, + ctx->dt.vactive.min >> 8); + /* VFP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + VERTICAL_FRONT_PORCH, ctx->dt.vfront_porch.min); + /* VWS */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + VERTICAL_SYNC_WIDTH, ctx->dt.vsync_len.min); + /* VBP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + VERTICAL_BACK_PORCH, ctx->dt.vback_porch.min); + /* M value */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_M_NUM_23_16, (m >> 16) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_M_NUM_15_8, (m >> 8) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_M_NUM_7_0, (m & 0xff)); + /* N value */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_N_NUM_23_16, (n >> 16) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_N_NUM_15_8, (n >> 8) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_7_0, + (n & 0xff)); + /* Diff */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_DIGITAL_ADJ_1, 0x3D); + + ret |= anx7625_odfc_config(ctx, post_divider - 1); + + if (ret < 0) + DRM_DEV_ERROR(dev, "mipi dsi setup IO error.\n"); + + return ret; +} + +static int anx7625_swap_dsi_lane3(struct anx7625_data *ctx) +{ + int val; + struct device *dev = &ctx->client->dev; + + /* Swap MIPI-DSI data lane 3 P and N */ + val = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP); + if (val < 0) { + DRM_DEV_ERROR(dev, "IO error : access MIPI_SWAP.\n"); + return -EIO; + } + + val |= (1 << MIPI_SWAP_CH3); + return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP, val); +} + +static int anx7625_api_dsi_config(struct anx7625_data *ctx) + +{ + int val, ret; + struct device *dev = &ctx->client->dev; + + /* Swap MIPI-DSI data lane 3 P and N */ + ret = anx7625_swap_dsi_lane3(ctx); + if (ret < 0) { + DRM_DEV_ERROR(dev, "IO error : swap dsi lane 3 fail.\n"); + return ret; + } + + /* DSI clock settings */ + val = (0 << MIPI_HS_PWD_CLK) | + (0 << MIPI_HS_RT_CLK) | + (0 << MIPI_PD_CLK) | + (1 << MIPI_CLK_RT_MANUAL_PD_EN) | + (1 << MIPI_CLK_HS_MANUAL_PD_EN) | + (0 << MIPI_CLK_DET_DET_BYPASS) | + (0 << MIPI_CLK_MISS_CTRL) | + (0 << MIPI_PD_LPTX_CH_MANUAL_PD_EN); + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PHY_CONTROL_3, val); + + /* + * Decreased HS prepare timing delay from 160ns to 80ns work with + * a) Dragon board 810 series (Qualcomm AP) + * b) Moving Pixel DSI source (PG3A pattern generator + + * P332 D-PHY Probe) default D-PHY timing + * 5ns/step + */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_TIME_HS_PRPR, 0x10); + + /* Enable DSI mode*/ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_18, + SELECT_DSI << MIPI_DPI_SELECT); + + ret |= anx7625_dsi_video_timing_config(ctx); + if (ret < 0) { + DRM_DEV_ERROR(dev, "dsi video timing config fail\n"); + return ret; + } + + /* Toggle m, n ready */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, + ~(MIPI_M_NUM_READY | MIPI_N_NUM_READY)); + usleep_range(1000, 1100); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, + MIPI_M_NUM_READY | MIPI_N_NUM_READY); + + /* Configure integer stable register */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_VIDEO_STABLE_CNT, 0x02); + /* Power on MIPI RX */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_10, 0x00); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_10, 0x80); + + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error : mipi dsi enable init fail.\n"); + + return ret; +} + +static int anx7625_dsi_config(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "config dsi.\n"); + + /* DSC disable */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + R_DSC_CTRL_0, ~DSC_EN); + + ret |= anx7625_api_dsi_config(ctx); + + if (ret < 0) { + DRM_DEV_ERROR(dev, "IO error : api dsi config error.\n"); + return ret; + } + + /* Set MIPI RX EN */ + ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_MIPI_RX_EN); + /* Clear mute flag */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, (u8)~AP_MIPI_MUTE); + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error : enable mipi rx fail.\n"); + else + DRM_DEV_DEBUG_DRIVER(dev, "success to config DSI\n"); + + return ret; +} + +static void anx7625_dp_start(struct anx7625_data *ctx) +{ + int ret; + struct device *dev = &ctx->client->dev; + + if (!ctx->display_timing_valid) { + DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n"); + return; + } + + anx7625_config_audio_input(ctx); + + ret = anx7625_dsi_config(ctx); + + if (ret < 0) + DRM_DEV_ERROR(dev, "MIPI phy setup error.\n"); +} + +static void anx7625_dp_stop(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "stop dp output\n"); + + /* + * Video disable: 0x72:08 bit 7 = 0; + * Audio disable: 0x70:87 bit 0 = 0; + */ + ret = anx7625_write_and(ctx, ctx->i2c.tx_p0_client, 0x87, 0xfe); + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 0x08, 0x7f); + + ret |= anx7625_video_mute_control(ctx, 1); + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error : mute video fail\n"); +} + +static int sp_tx_rst_aux(struct anx7625_data *ctx) +{ + int ret; + + ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, + AUX_RST); + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, + ~AUX_RST); + return ret; +} + +static int sp_tx_aux_wr(struct anx7625_data *ctx, u8 offset) +{ + int ret; + + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_BUFF_START, offset); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_COMMAND, 0x04); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); + return (ret | wait_aux_op_finish(ctx)); +} + +static int sp_tx_aux_rd(struct anx7625_data *ctx, u8 len_cmd) +{ + int ret; + + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_COMMAND, len_cmd); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); + return (ret | wait_aux_op_finish(ctx)); +} + +static int sp_tx_get_edid_block(struct anx7625_data *ctx) +{ + int c = 0; + struct device *dev = &ctx->client->dev; + + sp_tx_aux_wr(ctx, 0x7e); + sp_tx_aux_rd(ctx, 0x01); + c = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START); + if (c < 0) { + DRM_DEV_ERROR(dev, "IO error : access AUX BUFF.\n"); + return -EIO; + } + + DRM_DEV_DEBUG_DRIVER(dev, " EDID Block = %d\n", c + 1); + + if (c > MAX_EDID_BLOCK) + c = 1; + + return c; +} + +static int edid_read(struct anx7625_data *ctx, + u8 offset, u8 *pblock_buf) +{ + int ret, cnt; + struct device *dev = &ctx->client->dev; + + for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { + sp_tx_aux_wr(ctx, offset); + /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ + ret = sp_tx_aux_rd(ctx, 0xf1); + + if (ret) { + sp_tx_rst_aux(ctx); + DRM_DEV_DEBUG_DRIVER(dev, "edid read fail, reset!\n"); + } else { + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, + AP_AUX_BUFF_START, + MAX_DPCD_BUFFER_SIZE, + pblock_buf); + if (ret > 0) + break; + } + } + + if (cnt > EDID_TRY_CNT) + return -EIO; + + return 0; +} + +static int segments_edid_read(struct anx7625_data *ctx, + u8 segment, u8 *buf, u8 offset) +{ + u8 cnt; + int ret; + struct device *dev = &ctx->client->dev; + + /* Write address only */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_7_0, 0x30); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_COMMAND, 0x04); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS, + AP_AUX_CTRL_ADDRONLY | AP_AUX_CTRL_OP_EN); + + ret |= wait_aux_op_finish(ctx); + /* Write segment address */ + ret |= sp_tx_aux_wr(ctx, segment); + /* Data read */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_7_0, 0x50); + if (ret) { + DRM_DEV_ERROR(dev, "IO error : aux initial fail.\n"); + return ret; + } + + for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { + sp_tx_aux_wr(ctx, offset); + /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ + ret = sp_tx_aux_rd(ctx, 0xf1); + + if (ret) { + ret = sp_tx_rst_aux(ctx); + DRM_DEV_ERROR(dev, "segment read fail, reset!\n"); + } else { + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, + AP_AUX_BUFF_START, + MAX_DPCD_BUFFER_SIZE, buf); + if (ret > 0) + break; + } + } + + if (cnt > EDID_TRY_CNT) + return -EIO; + + return 0; +} + +static int sp_tx_edid_read(struct anx7625_data *ctx, + u8 *pedid_blocks_buf) +{ + u8 offset, edid_pos; + int count, blocks_num; + u8 pblock_buf[MAX_DPCD_BUFFER_SIZE]; + u8 i, j; + u8 g_edid_break = 0; + int ret; + struct device *dev = &ctx->client->dev; + + /* Address initial */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_7_0, 0x50); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_15_8, 0); + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_19_16, 0xf0); + if (ret < 0) { + DRM_DEV_ERROR(dev, "access aux channel IO error.\n"); + return -EIO; + } + + blocks_num = sp_tx_get_edid_block(ctx); + if (blocks_num < 0) + return blocks_num; + + count = 0; + + do { + switch (count) { + case 0: + case 1: + for (i = 0; i < 8; i++) { + offset = (i + count * 8) * MAX_DPCD_BUFFER_SIZE; + g_edid_break = edid_read(ctx, offset, + pblock_buf); + + if (g_edid_break) + break; + + memcpy(&pedid_blocks_buf[offset], + pblock_buf, + MAX_DPCD_BUFFER_SIZE); + } + + break; + case 2: + offset = 0x00; + + for (j = 0; j < 8; j++) { + edid_pos = (j + count * 8) * + MAX_DPCD_BUFFER_SIZE; + + if (g_edid_break == 1) + break; + + segments_edid_read(ctx, count / 2, + pblock_buf, offset); + memcpy(&pedid_blocks_buf[edid_pos], + pblock_buf, + MAX_DPCD_BUFFER_SIZE); + offset = offset + 0x10; + } + + break; + case 3: + offset = 0x80; + + for (j = 0; j < 8; j++) { + edid_pos = (j + count * 8) * + MAX_DPCD_BUFFER_SIZE; + if (g_edid_break == 1) + break; + + segments_edid_read(ctx, count / 2, + pblock_buf, offset); + memcpy(&pedid_blocks_buf[edid_pos], + pblock_buf, + MAX_DPCD_BUFFER_SIZE); + offset = offset + 0x10; + } + + break; + default: + break; + } + + count++; + + } while (blocks_num >= count); + + /* Check edid data */ + if (!drm_edid_is_valid((struct edid *)pedid_blocks_buf)) { + DRM_DEV_ERROR(dev, "WARNING! edid check fail!\n"); + return -EINVAL; + } + + /* Reset aux channel */ + sp_tx_rst_aux(ctx); + + return (blocks_num + 1); +} + +static void anx7625_power_on(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + + if (!ctx->pdata.low_power_mode) { + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); + return; + } + + /* Power on pin enable */ + gpiod_set_value(ctx->pdata.gpio_p_on, 1); + usleep_range(10000, 11000); + /* Power reset pin enable */ + gpiod_set_value(ctx->pdata.gpio_reset, 1); + usleep_range(10000, 11000); + + DRM_DEV_DEBUG_DRIVER(dev, "power on !\n"); +} + +static void anx7625_power_standby(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + + if (!ctx->pdata.low_power_mode) { + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); + return; + } + + gpiod_set_value(ctx->pdata.gpio_reset, 0); + usleep_range(1000, 1100); + gpiod_set_value(ctx->pdata.gpio_p_on, 0); + usleep_range(1000, 1100); + DRM_DEV_DEBUG_DRIVER(dev, "power down\n"); +} + +/* Basic configurations of ANX7625 */ +static void anx7625_config(struct anx7625_data *ctx) +{ + anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + XTAL_FRQ_SEL, XTAL_FRQ_27M); +} + +static void anx7625_disable_pd_protocol(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + /* Reset main ocm */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x40); + /* Disable PD */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_DISABLE_PD); + /* Release main ocm */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x00); + + if (ret < 0) + DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature fail.\n"); + else + DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature succeeded.\n"); +} + +static int anx7625_ocm_loading_check(struct anx7625_data *ctx) +{ + int ret; + struct device *dev = &ctx->client->dev; + + /* Check interface workable */ + ret = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + FLASH_LOAD_STA); + if (ret < 0) { + DRM_DEV_ERROR(dev, "IO error : access flash load.\n"); + return ret; + } + if ((ret & FLASH_LOAD_STA_CHK) != FLASH_LOAD_STA_CHK) + return -ENODEV; + + anx7625_disable_pd_protocol(ctx); + + DRM_DEV_DEBUG_DRIVER(dev, "Firmware ver %02x%02x,", + anx7625_reg_read(ctx, + ctx->i2c.rx_p0_client, + OCM_FW_VERSION), + anx7625_reg_read(ctx, + ctx->i2c.rx_p0_client, + OCM_FW_REVERSION)); + DRM_DEV_DEBUG_DRIVER(dev, "Driver version %s\n", + ANX7625_DRV_VERSION); + + return 0; +} + +static void anx7625_power_on_init(struct anx7625_data *ctx) +{ + int retry_count, i; + + for (retry_count = 0; retry_count < 3; retry_count++) { + anx7625_power_on(ctx); + anx7625_config(ctx); + + for (i = 0; i < OCM_LOADING_TIME; i++) { + if (!anx7625_ocm_loading_check(ctx)) + return; + usleep_range(1000, 1100); + } + anx7625_power_standby(ctx); + } +} + +static void anx7625_chip_control(struct anx7625_data *ctx, int state) +{ + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "before set, power_state(%d).\n", + atomic_read(&ctx->power_status)); + + if (!ctx->pdata.low_power_mode) + return; + + if (state) { + atomic_inc(&ctx->power_status); + if (atomic_read(&ctx->power_status) == 1) + anx7625_power_on_init(ctx); + } else { + if (atomic_read(&ctx->power_status)) { + atomic_dec(&ctx->power_status); + + if (atomic_read(&ctx->power_status) == 0) + anx7625_power_standby(ctx); + } + } + + DRM_DEV_DEBUG_DRIVER(dev, "after set, power_state(%d).\n", + atomic_read(&ctx->power_status)); +} + +static void anx7625_init_gpio(struct anx7625_data *platform) +{ + struct device *dev = &platform->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "init gpio\n"); + + /* Gpio for chip power enable */ + platform->pdata.gpio_p_on = + devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); + /* Gpio for chip reset */ + platform->pdata.gpio_reset = + devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + + if (platform->pdata.gpio_p_on && platform->pdata.gpio_reset) { + platform->pdata.low_power_mode = 1; + DRM_DEV_DEBUG_DRIVER(dev, "low power mode, pon %d, reset %d.\n", + desc_to_gpio(platform->pdata.gpio_p_on), + desc_to_gpio(platform->pdata.gpio_reset)); + } else { + platform->pdata.low_power_mode = 0; + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode.\n"); + } +} + +static void anx7625_stop_dp_work(struct anx7625_data *ctx) +{ + ctx->hpd_status = 0; + ctx->hpd_high_cnt = 0; + ctx->display_timing_valid = 0; + + if (ctx->pdata.low_power_mode == 0) + anx7625_disable_pd_protocol(ctx); +} + +static void anx7625_start_dp_work(struct anx7625_data *ctx) +{ + int ret; + struct device *dev = &ctx->client->dev; + + if (ctx->hpd_high_cnt >= 2) { + DRM_DEV_DEBUG_DRIVER(dev, "filter useless HPD\n"); + return; + } + + ctx->hpd_high_cnt++; + + /* Not support HDCP */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); + + /* Try auth flag */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10); + /* Interrupt for DRM */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01); + if (ret < 0) + return; + + ret = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, 0x86); + if (ret < 0) + return; + + DRM_DEV_DEBUG_DRIVER(dev, "Secure OCM version=%02x\n", ret); +} + +static int anx7625_read_hpd_status_p0(struct anx7625_data *ctx) +{ + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS); +} + +static void anx7625_hpd_polling(struct anx7625_data *ctx) +{ + int ret, val; + struct device *dev = &ctx->client->dev; + + if (atomic_read(&ctx->power_status) != 1) { + DRM_DEV_DEBUG_DRIVER(dev, "No need to poling HPD status.\n"); + return; + } + + ret = readx_poll_timeout(anx7625_read_hpd_status_p0, + ctx, val, + ((val & HPD_STATUS) || (val < 0)), + 5000, + 5000 * 100); + if (ret) { + DRM_DEV_ERROR(dev, "HPD polling timeout!\n"); + } else { + DRM_DEV_DEBUG_DRIVER(dev, "HPD raise up.\n"); + anx7625_reg_write(ctx, ctx->i2c.tcpc_client, + INTR_ALERT_1, 0xFF); + anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + INTERFACE_CHANGE_INT, 0); + } + + anx7625_start_dp_work(ctx); +} + +static void anx7625_disconnect_check(struct anx7625_data *ctx) +{ + if (atomic_read(&ctx->power_status) == 0) + anx7625_stop_dp_work(ctx); +} + +static void anx7625_low_power_mode_check(struct anx7625_data *ctx, + int state) +{ + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "low power mode check, state(%d).\n", state); + + if (ctx->pdata.low_power_mode) { + anx7625_chip_control(ctx, state); + if (state) + anx7625_hpd_polling(ctx); + else + anx7625_disconnect_check(ctx); + } +} + +static void anx7625_remove_edid(struct anx7625_data *ctx) +{ + ctx->slimport_edid_p.edid_block_num = -1; +} + +static void dp_hpd_change_handler(struct anx7625_data *ctx, bool on) +{ + struct device *dev = &ctx->client->dev; + + /* HPD changed */ + DRM_DEV_DEBUG_DRIVER(dev, "dp_hpd_change_default_func: %d\n", + (u32)on); + + if (on == 0) { + DRM_DEV_DEBUG_DRIVER(dev, " HPD low\n"); + anx7625_remove_edid(ctx); + anx7625_stop_dp_work(ctx); + } else { + DRM_DEV_DEBUG_DRIVER(dev, " HPD high\n"); + anx7625_start_dp_work(ctx); + } + + ctx->hpd_status = 1; +} + +static int anx7625_hpd_change_detect(struct anx7625_data *ctx) +{ + int intr_vector, status; + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "power_status=%d\n", + (u32)atomic_read(&ctx->power_status)); + + status = anx7625_reg_write(ctx, ctx->i2c.tcpc_client, + INTR_ALERT_1, 0xFF); + if (status < 0) { + DRM_DEV_ERROR(dev, "cannot clear alert reg.\n"); + return status; + } + + intr_vector = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + INTERFACE_CHANGE_INT); + if (intr_vector < 0) { + DRM_DEV_ERROR(dev, "cannot access interrupt change reg.\n"); + return intr_vector; + } + DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x44=%x\n", intr_vector); + status = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + INTERFACE_CHANGE_INT, + intr_vector & (~intr_vector)); + if (status < 0) { + DRM_DEV_ERROR(dev, "cannot clear interrupt change reg.\n"); + return status; + } + + if (!(intr_vector & HPD_STATUS_CHANGE)) + return -ENOENT; + + status = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + SYSTEM_STSTUS); + if (status < 0) { + DRM_DEV_ERROR(dev, "cannot clear interrupt status.\n"); + return status; + } + + DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x45=%x\n", status); + dp_hpd_change_handler(ctx, status & HPD_STATUS); + + return 0; +} + +static void anx7625_work_func(struct work_struct *work) +{ + int event; + struct anx7625_data *ctx = container_of(work, + struct anx7625_data, work); + + mutex_lock(&ctx->lock); + event = anx7625_hpd_change_detect(ctx); + mutex_unlock(&ctx->lock); + if (event < 0) + return; + + if (ctx->bridge_attached) + drm_helper_hpd_irq_event(ctx->bridge.dev); +} + +static irqreturn_t anx7625_intr_hpd_isr(int irq, void *data) +{ + struct anx7625_data *ctx = (struct anx7625_data *)data; + + if (atomic_read(&ctx->power_status) != 1) + return IRQ_NONE; + + queue_work(ctx->workqueue, &ctx->work); + + return IRQ_HANDLED; +} + +static int anx7625_parse_dt(struct device *dev, + struct anx7625_platform_data *pdata) +{ + struct device_node *np = dev->of_node; + struct drm_panel *panel; + int ret; + + pdata->mipi_host_node = of_graph_get_remote_node(np, 0, 0); + if (!pdata->mipi_host_node) { + DRM_DEV_ERROR(dev, "fail to get internal panel.\n"); + return -ENODEV; + } + + DRM_DEV_DEBUG_DRIVER(dev, "found dsi host node.\n"); + + ret = drm_of_find_panel_or_bridge(np, 1, 0, &panel, NULL); + if (ret < 0) { + if (ret == -ENODEV) + return 0; + return ret; + } + if (!panel) + return -ENODEV; + + pdata->panel_bridge = devm_drm_panel_bridge_add(dev, panel); + if (IS_ERR(pdata->panel_bridge)) + return PTR_ERR(pdata->panel_bridge); + DRM_DEV_DEBUG_DRIVER(dev, "get panel node.\n"); + + return 0; +} + +static inline struct anx7625_data *bridge_to_anx7625(struct drm_bridge *bridge) +{ + return container_of(bridge, struct anx7625_data, bridge); +} + +static struct edid *anx7625_get_edid(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + struct s_edid_data *p_edid = &ctx->slimport_edid_p; + int edid_num; + u8 *edid; + + edid = kmalloc(FOUR_BLOCK_SIZE, GFP_KERNEL); + if (!edid) { + DRM_DEV_ERROR(dev, "Fail to allocate buffer\n"); + return NULL; + } + + if (ctx->slimport_edid_p.edid_block_num > 0) { + memcpy(edid, ctx->slimport_edid_p.edid_raw_data, + FOUR_BLOCK_SIZE); + return (struct edid *)edid; + } + + anx7625_low_power_mode_check(ctx, 1); + edid_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data); + anx7625_low_power_mode_check(ctx, 0); + + if (edid_num < 1) { + DRM_DEV_ERROR(dev, "Fail to read EDID: %d\n", edid_num); + kfree(edid); + return NULL; + } + + p_edid->edid_block_num = edid_num; + + memcpy(edid, ctx->slimport_edid_p.edid_raw_data, FOUR_BLOCK_SIZE); + return (struct edid *)edid; +} + +static enum drm_connector_status anx7625_sink_detect(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "sink detect, return connected\n"); + + return connector_status_connected; +} + +static int anx7625_attach_dsi(struct anx7625_data *ctx) +{ + struct mipi_dsi_device *dsi; + struct device *dev = &ctx->client->dev; + struct mipi_dsi_host *host; + const struct mipi_dsi_device_info info = { + .type = "anx7625", + .channel = 0, + .node = NULL, + }; + + DRM_DEV_DEBUG_DRIVER(dev, "attach dsi\n"); + + host = of_find_mipi_dsi_host_by_node(ctx->pdata.mipi_host_node); + if (!host) { + DRM_DEV_ERROR(dev, "fail to find dsi host.\n"); + return -EINVAL; + } + + dsi = mipi_dsi_device_register_full(host, &info); + if (IS_ERR(dsi)) { + DRM_DEV_ERROR(dev, "fail to create dsi device.\n"); + return -EINVAL; + } + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_EOT_PACKET | + MIPI_DSI_MODE_VIDEO_HSE; + + if (mipi_dsi_attach(dsi) < 0) { + DRM_DEV_ERROR(dev, "fail to attach dsi to host.\n"); + mipi_dsi_device_unregister(dsi); + return -EINVAL; + } + + ctx->dsi = dsi; + + DRM_DEV_DEBUG_DRIVER(dev, "attach dsi succeeded.\n"); + + return 0; +} + +static void anx7625_bridge_detach(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + + if (ctx->dsi) { + mipi_dsi_detach(ctx->dsi); + mipi_dsi_device_unregister(ctx->dsi); + } +} + +static int anx7625_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + int err; + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm attach\n"); + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL; + + if (!bridge->encoder) { + DRM_DEV_ERROR(dev, "Parent encoder object not found"); + return -ENODEV; + } + + err = anx7625_attach_dsi(ctx); + if (err) { + DRM_DEV_ERROR(dev, "Fail to attach to dsi : %d\n", err); + return err; + } + + if (ctx->pdata.panel_bridge) { + err = drm_bridge_attach(bridge->encoder, + ctx->pdata.panel_bridge, + &ctx->bridge, flags); + if (err) { + DRM_DEV_ERROR(dev, + "Fail to attach panel bridge: %d\n", err); + return err; + } + } + + ctx->bridge_attached = 1; + + return 0; +} + +static enum drm_mode_status +anx7625_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode checking\n"); + + /* Max 1200p at 5.4 Ghz, one lane, pixel clock 300M */ + if (mode->clock > SUPPORT_PIXEL_CLOCK) { + DRM_DEV_DEBUG_DRIVER(dev, + "drm mode invalid, pixelclock too high.\n"); + return MODE_CLOCK_HIGH; + } + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode valid.\n"); + + return MODE_OK; +} + +static void anx7625_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *old_mode, + const struct drm_display_mode *mode) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode set\n"); + + ctx->dt.pixelclock.min = mode->clock; + ctx->dt.hactive.min = mode->hdisplay; + ctx->dt.hsync_len.min = mode->hsync_end - mode->hsync_start; + ctx->dt.hfront_porch.min = mode->hsync_start - mode->hdisplay; + ctx->dt.hback_porch.min = mode->htotal - mode->hsync_end; + ctx->dt.vactive.min = mode->vdisplay; + ctx->dt.vsync_len.min = mode->vsync_end - mode->vsync_start; + ctx->dt.vfront_porch.min = mode->vsync_start - mode->vdisplay; + ctx->dt.vback_porch.min = mode->vtotal - mode->vsync_end; + + ctx->display_timing_valid = 1; + + DRM_DEV_DEBUG_DRIVER(dev, "pixelclock(%d).\n", ctx->dt.pixelclock.min); + DRM_DEV_DEBUG_DRIVER(dev, "hactive(%d), hsync(%d), hfp(%d), hbp(%d)\n", + ctx->dt.hactive.min, + ctx->dt.hsync_len.min, + ctx->dt.hfront_porch.min, + ctx->dt.hback_porch.min); + DRM_DEV_DEBUG_DRIVER(dev, "vactive(%d), vsync(%d), vfp(%d), vbp(%d)\n", + ctx->dt.vactive.min, + ctx->dt.vsync_len.min, + ctx->dt.vfront_porch.min, + ctx->dt.vback_porch.min); + DRM_DEV_DEBUG_DRIVER(dev, "hdisplay(%d),hsync_start(%d).\n", + mode->hdisplay, + mode->hsync_start); + DRM_DEV_DEBUG_DRIVER(dev, "hsync_end(%d),htotal(%d).\n", + mode->hsync_end, + mode->htotal); + DRM_DEV_DEBUG_DRIVER(dev, "vdisplay(%d),vsync_start(%d).\n", + mode->vdisplay, + mode->vsync_start); + DRM_DEV_DEBUG_DRIVER(dev, "vsync_end(%d),vtotal(%d).\n", + mode->vsync_end, + mode->vtotal); +} + +static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adj) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + u32 hsync, hfp, hbp, hblanking; + u32 adj_hsync, adj_hfp, adj_hbp, adj_hblanking, delta_adj; + u32 vref, adj_clock; + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode fixup set\n"); + + hsync = mode->hsync_end - mode->hsync_start; + hfp = mode->hsync_start - mode->hdisplay; + hbp = mode->htotal - mode->hsync_end; + hblanking = mode->htotal - mode->hdisplay; + + DRM_DEV_DEBUG_DRIVER(dev, "before mode fixup\n"); + DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", + hsync, hfp, hbp, adj->clock); + DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", + adj->hsync_start, adj->hsync_end, adj->htotal); + + adj_hfp = hfp; + adj_hsync = hsync; + adj_hbp = hbp; + adj_hblanking = hblanking; + + /* HFP needs to be even */ + if (hfp & 0x1) { + adj_hfp += 1; + adj_hblanking += 1; + } + + /* HBP needs to be even */ + if (hbp & 0x1) { + adj_hbp -= 1; + adj_hblanking -= 1; + } + + /* HSYNC needs to be even */ + if (hsync & 0x1) { + if (adj_hblanking < hblanking) + adj_hsync += 1; + else + adj_hsync -= 1; + } + + /* + * Once illegal timing detected, use default HFP, HSYNC, HBP + * This adjusting made for built-in eDP panel, for the externel + * DP monitor, may need return false. + */ + if (hblanking < HBLANKING_MIN || (hfp < HP_MIN && hbp < HP_MIN)) { + adj_hsync = SYNC_LEN_DEF; + adj_hfp = HFP_HBP_DEF; + adj_hbp = HFP_HBP_DEF; + vref = adj->clock * 1000 / (adj->htotal * adj->vtotal); + if (hblanking < HBLANKING_MIN) { + delta_adj = HBLANKING_MIN - hblanking; + adj_clock = vref * delta_adj * adj->vtotal; + adj->clock += DIV_ROUND_UP(adj_clock, 1000); + } else { + delta_adj = hblanking - HBLANKING_MIN; + adj_clock = vref * delta_adj * adj->vtotal; + adj->clock -= DIV_ROUND_UP(adj_clock, 1000); + } + + DRM_WARN("illegal hblanking timing, use default.\n"); + DRM_WARN("hfp(%d), hbp(%d), hsync(%d).\n", hfp, hbp, hsync); + } else if (adj_hfp < HP_MIN) { + /* Adjust hfp if hfp less than HP_MIN */ + delta_adj = HP_MIN - adj_hfp; + adj_hfp = HP_MIN; + + /* + * Balance total HBlanking pixel, if HBP does not have enough + * space, adjust HSYNC length, otherwise adjust HBP + */ + if ((adj_hbp - delta_adj) < HP_MIN) + /* HBP not enough space */ + adj_hsync -= delta_adj; + else + adj_hbp -= delta_adj; + } else if (adj_hbp < HP_MIN) { + delta_adj = HP_MIN - adj_hbp; + adj_hbp = HP_MIN; + + /* + * Balance total HBlanking pixel, if HBP hasn't enough space, + * adjust HSYNC length, otherwize adjust HBP + */ + if ((adj_hfp - delta_adj) < HP_MIN) + /* HFP not enough space */ + adj_hsync -= delta_adj; + else + adj_hfp -= delta_adj; + } + + DRM_DEV_DEBUG_DRIVER(dev, "after mode fixup\n"); + DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", + adj_hsync, adj_hfp, adj_hbp, adj->clock); + + /* Reconstruct timing */ + adj->hsync_start = adj->hdisplay + adj_hfp; + adj->hsync_end = adj->hsync_start + adj_hsync; + adj->htotal = adj->hsync_end + adj_hbp; + DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", + adj->hsync_start, adj->hsync_end, adj->htotal); + + return true; +} + +static void anx7625_bridge_enable(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm enable\n"); + + anx7625_low_power_mode_check(ctx, 1); + + if (WARN_ON(!atomic_read(&ctx->power_status))) + return; + + anx7625_dp_start(ctx); +} + +static void anx7625_bridge_disable(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + if (WARN_ON(!atomic_read(&ctx->power_status))) + return; + + DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n"); + + anx7625_dp_stop(ctx); + + anx7625_low_power_mode_check(ctx, 0); +} + +static enum drm_connector_status +anx7625_bridge_detect(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm bridge detect\n"); + + return anx7625_sink_detect(ctx); +} + +static struct edid *anx7625_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm bridge get edid\n"); + + return anx7625_get_edid(ctx); +} + +static const struct drm_bridge_funcs anx7625_bridge_funcs = { + .attach = anx7625_bridge_attach, + .detach = anx7625_bridge_detach, + .disable = anx7625_bridge_disable, + .mode_valid = anx7625_bridge_mode_valid, + .mode_set = anx7625_bridge_mode_set, + .mode_fixup = anx7625_bridge_mode_fixup, + .enable = anx7625_bridge_enable, + .detect = anx7625_bridge_detect, + .get_edid = anx7625_bridge_get_edid, +}; + +static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx, + struct i2c_client *client) +{ + ctx->i2c.tx_p0_client = i2c_new_dummy_device(client->adapter, + TX_P0_ADDR >> 1); + if (!ctx->i2c.tx_p0_client) + return -ENOMEM; + + ctx->i2c.tx_p1_client = i2c_new_dummy_device(client->adapter, + TX_P1_ADDR >> 1); + if (!ctx->i2c.tx_p1_client) + goto free_tx_p0; + + ctx->i2c.tx_p2_client = i2c_new_dummy_device(client->adapter, + TX_P2_ADDR >> 1); + if (!ctx->i2c.tx_p2_client) + goto free_tx_p1; + + ctx->i2c.rx_p0_client = i2c_new_dummy_device(client->adapter, + RX_P0_ADDR >> 1); + if (!ctx->i2c.rx_p0_client) + goto free_tx_p2; + + ctx->i2c.rx_p1_client = i2c_new_dummy_device(client->adapter, + RX_P1_ADDR >> 1); + if (!ctx->i2c.rx_p1_client) + goto free_rx_p0; + + ctx->i2c.rx_p2_client = i2c_new_dummy_device(client->adapter, + RX_P2_ADDR >> 1); + if (!ctx->i2c.rx_p2_client) + goto free_rx_p1; + + ctx->i2c.tcpc_client = i2c_new_dummy_device(client->adapter, + TCPC_INTERFACE_ADDR >> 1); + if (!ctx->i2c.tcpc_client) + goto free_rx_p2; + + return 0; + +free_rx_p2: + i2c_unregister_device(ctx->i2c.rx_p2_client); +free_rx_p1: + i2c_unregister_device(ctx->i2c.rx_p1_client); +free_rx_p0: + i2c_unregister_device(ctx->i2c.rx_p0_client); +free_tx_p2: + i2c_unregister_device(ctx->i2c.tx_p2_client); +free_tx_p1: + i2c_unregister_device(ctx->i2c.tx_p1_client); +free_tx_p0: + i2c_unregister_device(ctx->i2c.tx_p0_client); + + return -ENOMEM; +} + +static void anx7625_unregister_i2c_dummy_clients(struct anx7625_data *ctx) +{ + i2c_unregister_device(ctx->i2c.tx_p0_client); + i2c_unregister_device(ctx->i2c.tx_p1_client); + i2c_unregister_device(ctx->i2c.tx_p2_client); + i2c_unregister_device(ctx->i2c.rx_p0_client); + i2c_unregister_device(ctx->i2c.rx_p1_client); + i2c_unregister_device(ctx->i2c.rx_p2_client); + i2c_unregister_device(ctx->i2c.tcpc_client); +} + +static int anx7625_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct anx7625_data *platform; + struct anx7625_platform_data *pdata; + int ret = 0; + struct device *dev = &client->dev; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_I2C_BLOCK)) { + DRM_DEV_ERROR(dev, "anx7625's i2c bus doesn't support\n"); + return -ENODEV; + } + + platform = kzalloc(sizeof(*platform), GFP_KERNEL); + if (!platform) { + DRM_DEV_ERROR(dev, "fail to allocate driver data\n"); + return -ENOMEM; + } + + pdata = &platform->pdata; + + ret = anx7625_parse_dt(dev, pdata); + if (ret) { + if (ret != -EPROBE_DEFER) + DRM_DEV_ERROR(dev, "fail to parse DT : %d\n", ret); + goto free_platform; + } + + platform->client = client; + i2c_set_clientdata(client, platform); + + anx7625_init_gpio(platform); + + atomic_set(&platform->power_status, 0); + + mutex_init(&platform->lock); + + platform->pdata.intp_irq = client->irq; + if (platform->pdata.intp_irq) { + INIT_WORK(&platform->work, anx7625_work_func); + platform->workqueue = create_workqueue("anx7625_work"); + if (!platform->workqueue) { + DRM_DEV_ERROR(dev, "fail to create work queue\n"); + ret = -ENOMEM; + goto free_platform; + } + + ret = devm_request_threaded_irq(dev, platform->pdata.intp_irq, + NULL, anx7625_intr_hpd_isr, + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "anx7625-intp", platform); + if (ret) { + DRM_DEV_ERROR(dev, "fail to request irq\n"); + goto free_wq; + } + } + + if (anx7625_register_i2c_dummy_clients(platform, client) != 0) { + ret = -ENOMEM; + DRM_DEV_ERROR(dev, "fail to reserve I2C bus.\n"); + goto free_wq; + } + + if (platform->pdata.low_power_mode == 0) { + anx7625_disable_pd_protocol(platform); + atomic_set(&platform->power_status, 1); + } + + /* Add work function */ + if (platform->pdata.intp_irq) + queue_work(platform->workqueue, &platform->work); + + platform->bridge.funcs = &anx7625_bridge_funcs; + platform->bridge.of_node = client->dev.of_node; + platform->bridge.ops = DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD; + platform->bridge.type = DRM_MODE_CONNECTOR_eDP; + drm_bridge_add(&platform->bridge); + + DRM_DEV_DEBUG_DRIVER(dev, "probe done\n"); + + return 0; + +free_wq: + if (platform->workqueue) + destroy_workqueue(platform->workqueue); + +free_platform: + kfree(platform); + + return ret; +} + +static int anx7625_i2c_remove(struct i2c_client *client) +{ + struct anx7625_data *platform = i2c_get_clientdata(client); + + drm_bridge_remove(&platform->bridge); + + if (platform->pdata.intp_irq) + destroy_workqueue(platform->workqueue); + + anx7625_unregister_i2c_dummy_clients(platform); + + kfree(platform); + return 0; +} + +static const struct i2c_device_id anx7625_id[] = { + {"anx7625", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, anx7625_id); + +static const struct of_device_id anx_match_table[] = { + {.compatible = "analogix,anx7625",}, + {}, +}; + +static struct i2c_driver anx7625_driver = { + .driver = { + .name = "anx7625", + .of_match_table = anx_match_table, + }, + .probe = anx7625_i2c_probe, + .remove = anx7625_i2c_remove, + + .id_table = anx7625_id, +}; + +module_i2c_driver(anx7625_driver); + +MODULE_DESCRIPTION("MIPI2DP anx7625 driver"); +MODULE_AUTHOR("Xin Ji <xji@analogixsemi.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(ANX7625_DRV_VERSION); diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h new file mode 100644 index 000000000000..193ad86c5450 --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix/anx7625.h @@ -0,0 +1,390 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. + * + */ + +#ifndef __ANX7625_H__ +#define __ANX7625_H__ + +#define ANX7625_DRV_VERSION "0.1.04" + +/* Loading OCM re-trying times */ +#define OCM_LOADING_TIME 10 + +/********* ANX7625 Register **********/ +#define TX_P0_ADDR 0x70 +#define TX_P1_ADDR 0x7A +#define TX_P2_ADDR 0x72 + +#define RX_P0_ADDR 0x7e +#define RX_P1_ADDR 0x84 +#define RX_P2_ADDR 0x54 + +#define RSVD_00_ADDR 0x00 +#define RSVD_D1_ADDR 0xD1 +#define RSVD_60_ADDR 0x60 +#define RSVD_39_ADDR 0x39 +#define RSVD_7F_ADDR 0x7F + +#define TCPC_INTERFACE_ADDR 0x58 + +/* Clock frequency in Hz */ +#define XTAL_FRQ (27 * 1000000) + +#define POST_DIVIDER_MIN 1 +#define POST_DIVIDER_MAX 16 +#define PLL_OUT_FREQ_MIN 520000000UL +#define PLL_OUT_FREQ_MAX 730000000UL +#define PLL_OUT_FREQ_ABS_MIN 300000000UL +#define PLL_OUT_FREQ_ABS_MAX 800000000UL +#define MAX_UNSIGNED_24BIT 16777215UL + +/***************************************************************/ +/* Register definition of device address 0x58 */ + +#define PRODUCT_ID_L 0x02 +#define PRODUCT_ID_H 0x03 + +#define INTR_ALERT_1 0xCC +#define INTR_SOFTWARE_INT BIT(3) +#define INTR_RECEIVED_MSG BIT(5) + +#define SYSTEM_STSTUS 0x45 +#define INTERFACE_CHANGE_INT 0x44 +#define HPD_STATUS_CHANGE 0x80 +#define HPD_STATUS 0x80 + +/******** END of I2C Address 0x58 ********/ + +/***************************************************************/ +/* Register definition of device address 0x70 */ +#define I2C_ADDR_70_DPTX 0x70 + +#define SP_TX_LINK_BW_SET_REG 0xA0 +#define SP_TX_LANE_COUNT_SET_REG 0xA1 + +#define M_VID_0 0xC0 +#define M_VID_1 0xC1 +#define M_VID_2 0xC2 +#define N_VID_0 0xC3 +#define N_VID_1 0xC4 +#define N_VID_2 0xC5 + +/***************************************************************/ +/* Register definition of device address 0x72 */ +#define AUX_RST 0x04 +#define RST_CTRL2 0x07 + +#define SP_TX_TOTAL_LINE_STA_L 0x24 +#define SP_TX_TOTAL_LINE_STA_H 0x25 +#define SP_TX_ACT_LINE_STA_L 0x26 +#define SP_TX_ACT_LINE_STA_H 0x27 +#define SP_TX_V_F_PORCH_STA 0x28 +#define SP_TX_V_SYNC_STA 0x29 +#define SP_TX_V_B_PORCH_STA 0x2A +#define SP_TX_TOTAL_PIXEL_STA_L 0x2B +#define SP_TX_TOTAL_PIXEL_STA_H 0x2C +#define SP_TX_ACT_PIXEL_STA_L 0x2D +#define SP_TX_ACT_PIXEL_STA_H 0x2E +#define SP_TX_H_F_PORCH_STA_L 0x2F +#define SP_TX_H_F_PORCH_STA_H 0x30 +#define SP_TX_H_SYNC_STA_L 0x31 +#define SP_TX_H_SYNC_STA_H 0x32 +#define SP_TX_H_B_PORCH_STA_L 0x33 +#define SP_TX_H_B_PORCH_STA_H 0x34 + +#define SP_TX_VID_CTRL 0x84 +#define SP_TX_BPC_MASK 0xE0 +#define SP_TX_BPC_6 0x00 +#define SP_TX_BPC_8 0x20 +#define SP_TX_BPC_10 0x40 +#define SP_TX_BPC_12 0x60 + +#define VIDEO_BIT_MATRIX_12 0x4c + +#define AUDIO_CHANNEL_STATUS_1 0xd0 +#define AUDIO_CHANNEL_STATUS_2 0xd1 +#define AUDIO_CHANNEL_STATUS_3 0xd2 +#define AUDIO_CHANNEL_STATUS_4 0xd3 +#define AUDIO_CHANNEL_STATUS_5 0xd4 +#define AUDIO_CHANNEL_STATUS_6 0xd5 +#define TDM_SLAVE_MODE 0x10 +#define I2S_SLAVE_MODE 0x08 + +#define AUDIO_CONTROL_REGISTER 0xe6 +#define TDM_TIMING_MODE 0x08 + +#define I2C_ADDR_72_DPTX 0x72 + +#define HP_MIN 8 +#define HBLANKING_MIN 80 +#define SYNC_LEN_DEF 32 +#define HFP_HBP_DEF ((HBLANKING_MIN - SYNC_LEN_DEF) / 2) +#define VIDEO_CONTROL_0 0x08 + +#define ACTIVE_LINES_L 0x14 +#define ACTIVE_LINES_H 0x15 /* Bit[7:6] are reserved */ +#define VERTICAL_FRONT_PORCH 0x16 +#define VERTICAL_SYNC_WIDTH 0x17 +#define VERTICAL_BACK_PORCH 0x18 + +#define HORIZONTAL_TOTAL_PIXELS_L 0x19 +#define HORIZONTAL_TOTAL_PIXELS_H 0x1A /* Bit[7:6] are reserved */ +#define HORIZONTAL_ACTIVE_PIXELS_L 0x1B +#define HORIZONTAL_ACTIVE_PIXELS_H 0x1C /* Bit[7:6] are reserved */ +#define HORIZONTAL_FRONT_PORCH_L 0x1D +#define HORIZONTAL_FRONT_PORCH_H 0x1E /* Bit[7:4] are reserved */ +#define HORIZONTAL_SYNC_WIDTH_L 0x1F +#define HORIZONTAL_SYNC_WIDTH_H 0x20 /* Bit[7:4] are reserved */ +#define HORIZONTAL_BACK_PORCH_L 0x21 +#define HORIZONTAL_BACK_PORCH_H 0x22 /* Bit[7:4] are reserved */ + +/******** END of I2C Address 0x72 *********/ +/***************************************************************/ +/* Register definition of device address 0x7e */ + +#define I2C_ADDR_7E_FLASH_CONTROLLER 0x7E + +#define FLASH_LOAD_STA 0x05 +#define FLASH_LOAD_STA_CHK BIT(7) + +#define XTAL_FRQ_SEL 0x3F +/* bit field positions */ +#define XTAL_FRQ_SEL_POS 5 +/* bit field values */ +#define XTAL_FRQ_19M2 (0 << XTAL_FRQ_SEL_POS) +#define XTAL_FRQ_27M (4 << XTAL_FRQ_SEL_POS) + +#define R_DSC_CTRL_0 0x40 +#define READ_STATUS_EN 7 +#define CLK_1MEG_RB 6 /* 1MHz clock reset; 0=reset, 0=reset release */ +#define DSC_BIST_DONE 1 /* Bit[5:1]: 1=DSC MBIST pass */ +#define DSC_EN 0x01 /* 1=DSC enabled, 0=DSC disabled */ + +#define OCM_FW_VERSION 0x31 +#define OCM_FW_REVERSION 0x32 + +#define AP_AUX_ADDR_7_0 0x11 +#define AP_AUX_ADDR_15_8 0x12 +#define AP_AUX_ADDR_19_16 0x13 + +/* Bit[0:3] AUX status, bit 4 op_en, bit 5 address only */ +#define AP_AUX_CTRL_STATUS 0x14 +#define AP_AUX_CTRL_OP_EN 0x10 +#define AP_AUX_CTRL_ADDRONLY 0x20 + +#define AP_AUX_BUFF_START 0x15 +#define PIXEL_CLOCK_L 0x25 +#define PIXEL_CLOCK_H 0x26 + +#define AP_AUX_COMMAND 0x27 /* com+len */ +/* Bit 0&1: 3D video structure */ +/* 0x01: frame packing, 0x02:Line alternative, 0x03:Side-by-side(full) */ +#define AP_AV_STATUS 0x28 +#define AP_VIDEO_CHG BIT(2) +#define AP_AUDIO_CHG BIT(3) +#define AP_MIPI_MUTE BIT(4) /* 1:MIPI input mute, 0: ummute */ +#define AP_MIPI_RX_EN BIT(5) /* 1: MIPI RX input in 0: no RX in */ +#define AP_DISABLE_PD BIT(6) +#define AP_DISABLE_DISPLAY BIT(7) +/***************************************************************/ +/* Register definition of device address 0x84 */ +#define MIPI_PHY_CONTROL_3 0x03 +#define MIPI_HS_PWD_CLK 7 +#define MIPI_HS_RT_CLK 6 +#define MIPI_PD_CLK 5 +#define MIPI_CLK_RT_MANUAL_PD_EN 4 +#define MIPI_CLK_HS_MANUAL_PD_EN 3 +#define MIPI_CLK_DET_DET_BYPASS 2 +#define MIPI_CLK_MISS_CTRL 1 +#define MIPI_PD_LPTX_CH_MANUAL_PD_EN 0 + +#define MIPI_LANE_CTRL_0 0x05 +#define MIPI_TIME_HS_PRPR 0x08 + +/* + * After MIPI RX protocol layer received video frames, + * Protocol layer starts to reconstruct video stream from PHY + */ +#define MIPI_VIDEO_STABLE_CNT 0x0A + +#define MIPI_LANE_CTRL_10 0x0F +#define MIPI_DIGITAL_ADJ_1 0x1B + +#define MIPI_PLL_M_NUM_23_16 0x1E +#define MIPI_PLL_M_NUM_15_8 0x1F +#define MIPI_PLL_M_NUM_7_0 0x20 +#define MIPI_PLL_N_NUM_23_16 0x21 +#define MIPI_PLL_N_NUM_15_8 0x22 +#define MIPI_PLL_N_NUM_7_0 0x23 + +#define MIPI_DIGITAL_PLL_6 0x2A +/* Bit[7:6]: VCO band control, only effective */ +#define MIPI_M_NUM_READY 0x10 +#define MIPI_N_NUM_READY 0x08 +#define STABLE_INTEGER_CNT_EN 0x04 +#define MIPI_PLL_TEST_BIT 0 +/* Bit[1:0]: test point output select - */ +/* 00: VCO power, 01: dvdd_pdt, 10: dvdd, 11: vcox */ + +#define MIPI_DIGITAL_PLL_7 0x2B +#define MIPI_PLL_FORCE_N_EN 7 +#define MIPI_PLL_FORCE_BAND_EN 6 + +#define MIPI_PLL_VCO_TUNE_REG 4 +/* Bit[5:4]: VCO metal capacitance - */ +/* 00: +20% fast, 01: +10% fast (default), 10: typical, 11: -10% slow */ +#define MIPI_PLL_VCO_TUNE_REG_VAL 0x30 + +#define MIPI_PLL_PLL_LDO_BIT 2 +/* Bit[3:2]: vco_v2i power - */ +/* 00: 1.40V, 01: 1.45V (default), 10: 1.50V, 11: 1.55V */ +#define MIPI_PLL_RESET_N 0x02 +#define MIPI_FRQ_FORCE_NDET 0 + +#define MIPI_ALERT_CLR_0 0x2D +#define HS_link_error_clear 7 +/* This bit itself is S/C, and it clears 0x84:0x31[7] */ + +#define MIPI_ALERT_OUT_0 0x31 +#define check_sum_err_hs_sync 7 +/* This bit is cleared by 0x84:0x2D[7] */ + +#define MIPI_DIGITAL_PLL_8 0x33 +#define MIPI_POST_DIV_VAL 4 +/* N means divided by (n+1), n = 0~15 */ +#define MIPI_EN_LOCK_FRZ 3 +#define MIPI_FRQ_COUNTER_RST 2 +#define MIPI_FRQ_SET_REG_8 1 +/* Bit 0 is reserved */ + +#define MIPI_DIGITAL_PLL_9 0x34 + +#define MIPI_DIGITAL_PLL_16 0x3B +#define MIPI_FRQ_FREEZE_NDET 7 +#define MIPI_FRQ_REG_SET_ENABLE 6 +#define MIPI_REG_FORCE_SEL_EN 5 +#define MIPI_REG_SEL_DIV_REG 4 +#define MIPI_REG_FORCE_PRE_DIV_EN 3 +/* Bit 2 is reserved */ +#define MIPI_FREF_D_IND 1 +#define REF_CLK_27000KHZ 1 +#define REF_CLK_19200KHZ 0 +#define MIPI_REG_PLL_PLL_TEST_ENABLE 0 + +#define MIPI_DIGITAL_PLL_18 0x3D +#define FRQ_COUNT_RB_SEL 7 +#define REG_FORCE_POST_DIV_EN 6 +#define MIPI_DPI_SELECT 5 +#define SELECT_DSI 1 +#define SELECT_DPI 0 +#define REG_BAUD_DIV_RATIO 0 + +#define H_BLANK_L 0x3E +/* For DSC only */ +#define H_BLANK_H 0x3F +/* For DSC only; note: bit[7:6] are reserved */ +#define MIPI_SWAP 0x4A +#define MIPI_SWAP_CH0 7 +#define MIPI_SWAP_CH1 6 +#define MIPI_SWAP_CH2 5 +#define MIPI_SWAP_CH3 4 +#define MIPI_SWAP_CLK 3 +/* Bit[2:0] are reserved */ + +/******** END of I2C Address 0x84 *********/ + +/* DPCD regs */ +#define DPCD_DPCD_REV 0x00 +#define DPCD_MAX_LINK_RATE 0x01 +#define DPCD_MAX_LANE_COUNT 0x02 + +/********* ANX7625 Register End **********/ + +/***************** Display *****************/ +enum audio_fs { + AUDIO_FS_441K = 0x00, + AUDIO_FS_48K = 0x02, + AUDIO_FS_32K = 0x03, + AUDIO_FS_882K = 0x08, + AUDIO_FS_96K = 0x0a, + AUDIO_FS_1764K = 0x0c, + AUDIO_FS_192K = 0x0e +}; + +enum audio_wd_len { + AUDIO_W_LEN_16_20MAX = 0x02, + AUDIO_W_LEN_18_20MAX = 0x04, + AUDIO_W_LEN_17_20MAX = 0x0c, + AUDIO_W_LEN_19_20MAX = 0x08, + AUDIO_W_LEN_20_20MAX = 0x0a, + AUDIO_W_LEN_20_24MAX = 0x03, + AUDIO_W_LEN_22_24MAX = 0x05, + AUDIO_W_LEN_21_24MAX = 0x0d, + AUDIO_W_LEN_23_24MAX = 0x09, + AUDIO_W_LEN_24_24MAX = 0x0b +}; + +#define I2S_CH_2 0x01 +#define TDM_CH_4 0x03 +#define TDM_CH_6 0x05 +#define TDM_CH_8 0x07 + +#define MAX_DPCD_BUFFER_SIZE 16 + +#define ONE_BLOCK_SIZE 128 +#define FOUR_BLOCK_SIZE (128 * 4) + +#define MAX_EDID_BLOCK 3 +#define EDID_TRY_CNT 3 +#define SUPPORT_PIXEL_CLOCK 300000 + +struct s_edid_data { + int edid_block_num; + u8 edid_raw_data[FOUR_BLOCK_SIZE]; +}; + +/***************** Display End *****************/ + +struct anx7625_platform_data { + struct gpio_desc *gpio_p_on; + struct gpio_desc *gpio_reset; + struct drm_bridge *panel_bridge; + int intp_irq; + u32 low_power_mode; + struct device_node *mipi_host_node; +}; + +struct anx7625_i2c_client { + struct i2c_client *tx_p0_client; + struct i2c_client *tx_p1_client; + struct i2c_client *tx_p2_client; + struct i2c_client *rx_p0_client; + struct i2c_client *rx_p1_client; + struct i2c_client *rx_p2_client; + struct i2c_client *tcpc_client; +}; + +struct anx7625_data { + struct anx7625_platform_data pdata; + atomic_t power_status; + int hpd_status; + int hpd_high_cnt; + /* Lock for work queue */ + struct mutex lock; + struct i2c_client *client; + struct anx7625_i2c_client i2c; + struct i2c_client *last_client; + struct s_edid_data slimport_edid_p; + struct work_struct work; + struct workqueue_struct *workqueue; + char edid_block; + struct display_timing dt; + u8 display_timing_valid; + struct drm_bridge bridge; + u8 bridge_attached; + struct mipi_dsi_device *dsi; +}; + +#endif /* __ANX7625_H__ */ diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c new file mode 100644 index 000000000000..0c98d27f84ac --- /dev/null +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c @@ -0,0 +1,1002 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2019-2020. Linaro Limited. + */ + +#include <linux/firmware.h> +#include <linux/gpio/consumer.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_graph.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/wait.h> + +#include <sound/hdmi-codec.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_print.h> +#include <drm/drm_probe_helper.h> + +#define EDID_BLOCK_SIZE 128 +#define EDID_NUM_BLOCKS 2 + +struct lt9611uxc { + struct device *dev; + struct drm_bridge bridge; + struct drm_connector connector; + + struct regmap *regmap; + /* Protects all accesses to registers by stopping the on-chip MCU */ + struct mutex ocm_lock; + + struct wait_queue_head wq; + + struct device_node *dsi0_node; + struct device_node *dsi1_node; + struct mipi_dsi_device *dsi0; + struct mipi_dsi_device *dsi1; + struct platform_device *audio_pdev; + + struct gpio_desc *reset_gpio; + struct gpio_desc *enable_gpio; + + struct regulator_bulk_data supplies[2]; + + struct i2c_client *client; + + bool hpd_supported; + bool edid_read; + uint8_t fw_version; +}; + +#define LT9611_PAGE_CONTROL 0xff + +static const struct regmap_range_cfg lt9611uxc_ranges[] = { + { + .name = "register_range", + .range_min = 0, + .range_max = 0xd0ff, + .selector_reg = LT9611_PAGE_CONTROL, + .selector_mask = 0xff, + .selector_shift = 0, + .window_start = 0, + .window_len = 0x100, + }, +}; + +static const struct regmap_config lt9611uxc_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xffff, + .ranges = lt9611uxc_ranges, + .num_ranges = ARRAY_SIZE(lt9611uxc_ranges), +}; + +struct lt9611uxc_mode { + u16 hdisplay; + u16 vdisplay; + u8 vrefresh; +}; + +/* + * This chip supports only a fixed set of modes. + * Enumerate them here to check whether the mode is supported. + */ +static struct lt9611uxc_mode lt9611uxc_modes[] = { + { 1920, 1080, 60 }, + { 1920, 1080, 30 }, + { 1920, 1080, 25 }, + { 1366, 768, 60 }, + { 1360, 768, 60 }, + { 1280, 1024, 60 }, + { 1280, 800, 60 }, + { 1280, 720, 60 }, + { 1280, 720, 50 }, + { 1280, 720, 30 }, + { 1152, 864, 60 }, + { 1024, 768, 60 }, + { 800, 600, 60 }, + { 720, 576, 50 }, + { 720, 480, 60 }, + { 640, 480, 60 }, +}; + +static struct lt9611uxc *bridge_to_lt9611uxc(struct drm_bridge *bridge) +{ + return container_of(bridge, struct lt9611uxc, bridge); +} + +static struct lt9611uxc *connector_to_lt9611uxc(struct drm_connector *connector) +{ + return container_of(connector, struct lt9611uxc, connector); +} + +static void lt9611uxc_lock(struct lt9611uxc *lt9611uxc) +{ + mutex_lock(<9611uxc->ocm_lock); + regmap_write(lt9611uxc->regmap, 0x80ee, 0x01); +} + +static void lt9611uxc_unlock(struct lt9611uxc *lt9611uxc) +{ + regmap_write(lt9611uxc->regmap, 0x80ee, 0x00); + msleep(50); + mutex_unlock(<9611uxc->ocm_lock); +} + +static irqreturn_t lt9611uxc_irq_thread_handler(int irq, void *dev_id) +{ + struct lt9611uxc *lt9611uxc = dev_id; + unsigned int irq_status = 0; + unsigned int hpd_status = 0; + + lt9611uxc_lock(lt9611uxc); + + regmap_read(lt9611uxc->regmap, 0xb022, &irq_status); + regmap_read(lt9611uxc->regmap, 0xb023, &hpd_status); + if (irq_status) + regmap_write(lt9611uxc->regmap, 0xb022, 0); + + lt9611uxc_unlock(lt9611uxc); + + if (irq_status & BIT(0)) + lt9611uxc->edid_read = !!(hpd_status & BIT(0)); + + if (irq_status & BIT(1)) { + if (lt9611uxc->connector.dev) + drm_kms_helper_hotplug_event(lt9611uxc->connector.dev); + else + drm_bridge_hpd_notify(<9611uxc->bridge, !!(hpd_status & BIT(1))); + } + + return IRQ_HANDLED; +} + +static void lt9611uxc_reset(struct lt9611uxc *lt9611uxc) +{ + gpiod_set_value_cansleep(lt9611uxc->reset_gpio, 1); + msleep(20); + + gpiod_set_value_cansleep(lt9611uxc->reset_gpio, 0); + msleep(20); + + gpiod_set_value_cansleep(lt9611uxc->reset_gpio, 1); + msleep(300); +} + +static void lt9611uxc_assert_5v(struct lt9611uxc *lt9611uxc) +{ + if (!lt9611uxc->enable_gpio) + return; + + gpiod_set_value_cansleep(lt9611uxc->enable_gpio, 1); + msleep(20); +} + +static int lt9611uxc_regulator_init(struct lt9611uxc *lt9611uxc) +{ + int ret; + + lt9611uxc->supplies[0].supply = "vdd"; + lt9611uxc->supplies[1].supply = "vcc"; + + ret = devm_regulator_bulk_get(lt9611uxc->dev, 2, lt9611uxc->supplies); + if (ret < 0) + return ret; + + return regulator_set_load(lt9611uxc->supplies[0].consumer, 200000); +} + +static int lt9611uxc_regulator_enable(struct lt9611uxc *lt9611uxc) +{ + int ret; + + ret = regulator_enable(lt9611uxc->supplies[0].consumer); + if (ret < 0) + return ret; + + usleep_range(1000, 10000); /* 50000 according to dtsi */ + + ret = regulator_enable(lt9611uxc->supplies[1].consumer); + if (ret < 0) { + regulator_disable(lt9611uxc->supplies[0].consumer); + return ret; + } + + return 0; +} + +static struct lt9611uxc_mode *lt9611uxc_find_mode(const struct drm_display_mode *mode) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lt9611uxc_modes); i++) { + if (lt9611uxc_modes[i].hdisplay == mode->hdisplay && + lt9611uxc_modes[i].vdisplay == mode->vdisplay && + lt9611uxc_modes[i].vrefresh == drm_mode_vrefresh(mode)) { + return <9611uxc_modes[i]; + } + } + + return NULL; +} + +static struct mipi_dsi_device *lt9611uxc_attach_dsi(struct lt9611uxc *lt9611uxc, + struct device_node *dsi_node) +{ + const struct mipi_dsi_device_info info = { "lt9611uxc", 0, NULL }; + struct mipi_dsi_device *dsi; + struct mipi_dsi_host *host; + int ret; + + host = of_find_mipi_dsi_host_by_node(dsi_node); + if (!host) { + dev_err(lt9611uxc->dev, "failed to find dsi host\n"); + return ERR_PTR(-EPROBE_DEFER); + } + + dsi = mipi_dsi_device_register_full(host, &info); + if (IS_ERR(dsi)) { + dev_err(lt9611uxc->dev, "failed to create dsi device\n"); + return dsi; + } + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_VIDEO_HSE; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(lt9611uxc->dev, "failed to attach dsi to host\n"); + mipi_dsi_device_unregister(dsi); + return ERR_PTR(ret); + } + + return dsi; +} + +static int lt9611uxc_connector_get_modes(struct drm_connector *connector) +{ + struct lt9611uxc *lt9611uxc = connector_to_lt9611uxc(connector); + unsigned int count; + struct edid *edid; + + edid = lt9611uxc->bridge.funcs->get_edid(<9611uxc->bridge, connector); + drm_connector_update_edid_property(connector, edid); + count = drm_add_edid_modes(connector, edid); + kfree(edid); + + return count; +} + +static enum drm_connector_status lt9611uxc_connector_detect(struct drm_connector *connector, + bool force) +{ + struct lt9611uxc *lt9611uxc = connector_to_lt9611uxc(connector); + + return lt9611uxc->bridge.funcs->detect(<9611uxc->bridge); +} + +static enum drm_mode_status lt9611uxc_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct lt9611uxc_mode *lt9611uxc_mode = lt9611uxc_find_mode(mode); + + return lt9611uxc_mode ? MODE_OK : MODE_BAD; +} + +static const struct drm_connector_helper_funcs lt9611uxc_bridge_connector_helper_funcs = { + .get_modes = lt9611uxc_connector_get_modes, + .mode_valid = lt9611uxc_connector_mode_valid, +}; + +static const struct drm_connector_funcs lt9611uxc_bridge_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = lt9611uxc_connector_detect, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static int lt9611uxc_connector_init(struct drm_bridge *bridge, struct lt9611uxc *lt9611uxc) +{ + int ret; + + if (!bridge->encoder) { + DRM_ERROR("Parent encoder object not found"); + return -ENODEV; + } + + drm_connector_helper_add(<9611uxc->connector, + <9611uxc_bridge_connector_helper_funcs); + ret = drm_connector_init(bridge->dev, <9611uxc->connector, + <9611uxc_bridge_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA); + if (ret) { + DRM_ERROR("Failed to initialize connector with drm\n"); + return ret; + } + + return drm_connector_attach_encoder(<9611uxc->connector, bridge->encoder); +} + +static void lt9611uxc_bridge_detach(struct drm_bridge *bridge) +{ + struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); + + if (lt9611uxc->dsi1) { + mipi_dsi_detach(lt9611uxc->dsi1); + mipi_dsi_device_unregister(lt9611uxc->dsi1); + } + + mipi_dsi_detach(lt9611uxc->dsi0); + mipi_dsi_device_unregister(lt9611uxc->dsi0); +} + +static int lt9611uxc_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); + int ret; + + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { + ret = lt9611uxc_connector_init(bridge, lt9611uxc); + if (ret < 0) + return ret; + } + + /* Attach primary DSI */ + lt9611uxc->dsi0 = lt9611uxc_attach_dsi(lt9611uxc, lt9611uxc->dsi0_node); + if (IS_ERR(lt9611uxc->dsi0)) + return PTR_ERR(lt9611uxc->dsi0); + + /* Attach secondary DSI, if specified */ + if (lt9611uxc->dsi1_node) { + lt9611uxc->dsi1 = lt9611uxc_attach_dsi(lt9611uxc, lt9611uxc->dsi1_node); + if (IS_ERR(lt9611uxc->dsi1)) { + ret = PTR_ERR(lt9611uxc->dsi1); + goto err_unregister_dsi0; + } + } + + return 0; + +err_unregister_dsi0: + mipi_dsi_detach(lt9611uxc->dsi0); + mipi_dsi_device_unregister(lt9611uxc->dsi0); + + return ret; +} + +static enum drm_mode_status +lt9611uxc_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct lt9611uxc_mode *lt9611uxc_mode; + + lt9611uxc_mode = lt9611uxc_find_mode(mode); + + return lt9611uxc_mode ? MODE_OK : MODE_BAD; +} + +static void lt9611uxc_video_setup(struct lt9611uxc *lt9611uxc, + const struct drm_display_mode *mode) +{ + u32 h_total, hactive, hsync_len, hfront_porch; + u32 v_total, vactive, vsync_len, vfront_porch; + + h_total = mode->htotal; + v_total = mode->vtotal; + + hactive = mode->hdisplay; + hsync_len = mode->hsync_end - mode->hsync_start; + hfront_porch = mode->hsync_start - mode->hdisplay; + + vactive = mode->vdisplay; + vsync_len = mode->vsync_end - mode->vsync_start; + vfront_porch = mode->vsync_start - mode->vdisplay; + + regmap_write(lt9611uxc->regmap, 0xd00d, (u8)(v_total / 256)); + regmap_write(lt9611uxc->regmap, 0xd00e, (u8)(v_total % 256)); + + regmap_write(lt9611uxc->regmap, 0xd00f, (u8)(vactive / 256)); + regmap_write(lt9611uxc->regmap, 0xd010, (u8)(vactive % 256)); + + regmap_write(lt9611uxc->regmap, 0xd011, (u8)(h_total / 256)); + regmap_write(lt9611uxc->regmap, 0xd012, (u8)(h_total % 256)); + + regmap_write(lt9611uxc->regmap, 0xd013, (u8)(hactive / 256)); + regmap_write(lt9611uxc->regmap, 0xd014, (u8)(hactive % 256)); + + regmap_write(lt9611uxc->regmap, 0xd015, (u8)(vsync_len % 256)); + + regmap_update_bits(lt9611uxc->regmap, 0xd016, 0xf, (u8)(hsync_len / 256)); + regmap_write(lt9611uxc->regmap, 0xd017, (u8)(hsync_len % 256)); + + regmap_update_bits(lt9611uxc->regmap, 0xd018, 0xf, (u8)(vfront_porch / 256)); + regmap_write(lt9611uxc->regmap, 0xd019, (u8)(vfront_porch % 256)); + + regmap_update_bits(lt9611uxc->regmap, 0xd01a, 0xf, (u8)(hfront_porch / 256)); + regmap_write(lt9611uxc->regmap, 0xd01b, (u8)(hfront_porch % 256)); +} + +static void lt9611uxc_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adj_mode) +{ + struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); + + lt9611uxc_lock(lt9611uxc); + lt9611uxc_video_setup(lt9611uxc, mode); + lt9611uxc_unlock(lt9611uxc); +} + +static enum drm_connector_status lt9611uxc_bridge_detect(struct drm_bridge *bridge) +{ + struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); + unsigned int reg_val = 0; + int ret; + int connected = 1; + + if (lt9611uxc->hpd_supported) { + lt9611uxc_lock(lt9611uxc); + ret = regmap_read(lt9611uxc->regmap, 0xb023, ®_val); + lt9611uxc_unlock(lt9611uxc); + + if (ret) + dev_err(lt9611uxc->dev, "failed to read hpd status: %d\n", ret); + else + connected = reg_val & BIT(1); + } + + return connected ? connector_status_connected : + connector_status_disconnected; +} + +static int lt9611uxc_wait_for_edid(struct lt9611uxc *lt9611uxc) +{ + return wait_event_interruptible_timeout(lt9611uxc->wq, lt9611uxc->edid_read, + msecs_to_jiffies(100)); +} + +static int lt9611uxc_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len) +{ + struct lt9611uxc *lt9611uxc = data; + int ret; + + if (len > EDID_BLOCK_SIZE) + return -EINVAL; + + if (block >= EDID_NUM_BLOCKS) + return -EINVAL; + + lt9611uxc_lock(lt9611uxc); + + regmap_write(lt9611uxc->regmap, 0xb00b, 0x10); + + regmap_write(lt9611uxc->regmap, 0xb00a, block * EDID_BLOCK_SIZE); + + ret = regmap_noinc_read(lt9611uxc->regmap, 0xb0b0, buf, len); + if (ret) + dev_err(lt9611uxc->dev, "edid read failed: %d\n", ret); + + lt9611uxc_unlock(lt9611uxc); + + return 0; +}; + +static struct edid *lt9611uxc_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); + int ret; + + ret = lt9611uxc_wait_for_edid(lt9611uxc); + if (ret < 0) { + dev_err(lt9611uxc->dev, "wait for EDID failed: %d\n", ret); + return ERR_PTR(ret); + } + + return drm_do_get_edid(connector, lt9611uxc_get_edid_block, lt9611uxc); +} + +static const struct drm_bridge_funcs lt9611uxc_bridge_funcs = { + .attach = lt9611uxc_bridge_attach, + .detach = lt9611uxc_bridge_detach, + .mode_valid = lt9611uxc_bridge_mode_valid, + .mode_set = lt9611uxc_bridge_mode_set, + .detect = lt9611uxc_bridge_detect, + .get_edid = lt9611uxc_bridge_get_edid, +}; + +static int lt9611uxc_parse_dt(struct device *dev, + struct lt9611uxc *lt9611uxc) +{ + lt9611uxc->dsi0_node = of_graph_get_remote_node(dev->of_node, 0, -1); + if (!lt9611uxc->dsi0_node) { + dev_err(lt9611uxc->dev, "failed to get remote node for primary dsi\n"); + return -ENODEV; + } + + lt9611uxc->dsi1_node = of_graph_get_remote_node(dev->of_node, 1, -1); + + return 0; +} + +static int lt9611uxc_gpio_init(struct lt9611uxc *lt9611uxc) +{ + struct device *dev = lt9611uxc->dev; + + lt9611uxc->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(lt9611uxc->reset_gpio)) { + dev_err(dev, "failed to acquire reset gpio\n"); + return PTR_ERR(lt9611uxc->reset_gpio); + } + + lt9611uxc->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(lt9611uxc->enable_gpio)) { + dev_err(dev, "failed to acquire enable gpio\n"); + return PTR_ERR(lt9611uxc->enable_gpio); + } + + return 0; +} + +static int lt9611uxc_read_device_rev(struct lt9611uxc *lt9611uxc) +{ + unsigned int rev0, rev1, rev2; + int ret; + + lt9611uxc_lock(lt9611uxc); + + ret = regmap_read(lt9611uxc->regmap, 0x8100, &rev0); + ret |= regmap_read(lt9611uxc->regmap, 0x8101, &rev1); + ret |= regmap_read(lt9611uxc->regmap, 0x8102, &rev2); + if (ret) + dev_err(lt9611uxc->dev, "failed to read revision: %d\n", ret); + else + dev_info(lt9611uxc->dev, "LT9611 revision: 0x%02x.%02x.%02x\n", rev0, rev1, rev2); + + lt9611uxc_unlock(lt9611uxc); + + return ret; +} + +static int lt9611uxc_read_version(struct lt9611uxc *lt9611uxc) +{ + unsigned int rev; + int ret; + + lt9611uxc_lock(lt9611uxc); + + ret = regmap_read(lt9611uxc->regmap, 0xb021, &rev); + if (ret) + dev_err(lt9611uxc->dev, "failed to read revision: %d\n", ret); + else + dev_info(lt9611uxc->dev, "LT9611 version: 0x%02x\n", rev); + + lt9611uxc_unlock(lt9611uxc); + + return ret < 0 ? ret : rev; +} + +static int lt9611uxc_hdmi_hw_params(struct device *dev, void *data, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms) +{ + /* + * LT9611UXC will automatically detect rate and sample size, so no need + * to setup anything here. + */ + return 0; +} + +static void lt9611uxc_audio_shutdown(struct device *dev, void *data) +{ +} + +static int lt9611uxc_hdmi_i2s_get_dai_id(struct snd_soc_component *component, + struct device_node *endpoint) +{ + struct of_endpoint of_ep; + int ret; + + ret = of_graph_parse_endpoint(endpoint, &of_ep); + if (ret < 0) + return ret; + + /* + * HDMI sound should be located as reg = <2> + * Then, it is sound port 0 + */ + if (of_ep.port == 2) + return 0; + + return -EINVAL; +} + +static const struct hdmi_codec_ops lt9611uxc_codec_ops = { + .hw_params = lt9611uxc_hdmi_hw_params, + .audio_shutdown = lt9611uxc_audio_shutdown, + .get_dai_id = lt9611uxc_hdmi_i2s_get_dai_id, +}; + +static int lt9611uxc_audio_init(struct device *dev, struct lt9611uxc *lt9611uxc) +{ + struct hdmi_codec_pdata codec_data = { + .ops = <9611uxc_codec_ops, + .max_i2s_channels = 2, + .i2s = 1, + .data = lt9611uxc, + }; + + lt9611uxc->audio_pdev = + platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, + PLATFORM_DEVID_AUTO, + &codec_data, sizeof(codec_data)); + + return PTR_ERR_OR_ZERO(lt9611uxc->audio_pdev); +} + +static void lt9611uxc_audio_exit(struct lt9611uxc *lt9611uxc) +{ + if (lt9611uxc->audio_pdev) { + platform_device_unregister(lt9611uxc->audio_pdev); + lt9611uxc->audio_pdev = NULL; + } +} + +#define LT9611UXC_FW_PAGE_SIZE 32 +static void lt9611uxc_firmware_write_page(struct lt9611uxc *lt9611uxc, u16 addr, const u8 *buf) +{ + struct reg_sequence seq_write_prepare[] = { + REG_SEQ0(0x805a, 0x04), + REG_SEQ0(0x805a, 0x00), + + REG_SEQ0(0x805e, 0xdf), + REG_SEQ0(0x805a, 0x20), + REG_SEQ0(0x805a, 0x00), + REG_SEQ0(0x8058, 0x21), + }; + + struct reg_sequence seq_write_addr[] = { + REG_SEQ0(0x805b, (addr >> 16) & 0xff), + REG_SEQ0(0x805c, (addr >> 8) & 0xff), + REG_SEQ0(0x805d, addr & 0xff), + REG_SEQ0(0x805a, 0x10), + REG_SEQ0(0x805a, 0x00), + }; + + regmap_write(lt9611uxc->regmap, 0x8108, 0xbf); + msleep(20); + regmap_write(lt9611uxc->regmap, 0x8108, 0xff); + msleep(20); + regmap_multi_reg_write(lt9611uxc->regmap, seq_write_prepare, ARRAY_SIZE(seq_write_prepare)); + regmap_noinc_write(lt9611uxc->regmap, 0x8059, buf, LT9611UXC_FW_PAGE_SIZE); + regmap_multi_reg_write(lt9611uxc->regmap, seq_write_addr, ARRAY_SIZE(seq_write_addr)); + msleep(20); +} + +static void lt9611uxc_firmware_read_page(struct lt9611uxc *lt9611uxc, u16 addr, char *buf) +{ + struct reg_sequence seq_read_page[] = { + REG_SEQ0(0x805a, 0xa0), + REG_SEQ0(0x805a, 0x80), + REG_SEQ0(0x805b, (addr >> 16) & 0xff), + REG_SEQ0(0x805c, (addr >> 8) & 0xff), + REG_SEQ0(0x805d, addr & 0xff), + REG_SEQ0(0x805a, 0x90), + REG_SEQ0(0x805a, 0x80), + REG_SEQ0(0x8058, 0x21), + }; + + regmap_multi_reg_write(lt9611uxc->regmap, seq_read_page, ARRAY_SIZE(seq_read_page)); + regmap_noinc_read(lt9611uxc->regmap, 0x805f, buf, LT9611UXC_FW_PAGE_SIZE); +} + +static char *lt9611uxc_firmware_read(struct lt9611uxc *lt9611uxc, size_t size) +{ + struct reg_sequence seq_read_setup[] = { + REG_SEQ0(0x805a, 0x84), + REG_SEQ0(0x805a, 0x80), + }; + + char *readbuf; + u16 offset; + + readbuf = kzalloc(ALIGN(size, 32), GFP_KERNEL); + if (!readbuf) + return NULL; + + regmap_multi_reg_write(lt9611uxc->regmap, seq_read_setup, ARRAY_SIZE(seq_read_setup)); + + for (offset = 0; + offset < size; + offset += LT9611UXC_FW_PAGE_SIZE) + lt9611uxc_firmware_read_page(lt9611uxc, offset, &readbuf[offset]); + + return readbuf; +} + +static int lt9611uxc_firmware_update(struct lt9611uxc *lt9611uxc) +{ + int ret; + u16 offset; + size_t remain; + char *readbuf; + const struct firmware *fw; + + struct reg_sequence seq_setup[] = { + REG_SEQ0(0x805e, 0xdf), + REG_SEQ0(0x8058, 0x00), + REG_SEQ0(0x8059, 0x50), + REG_SEQ0(0x805a, 0x10), + REG_SEQ0(0x805a, 0x00), + }; + + + struct reg_sequence seq_block_erase[] = { + REG_SEQ0(0x805a, 0x04), + REG_SEQ0(0x805a, 0x00), + REG_SEQ0(0x805b, 0x00), + REG_SEQ0(0x805c, 0x00), + REG_SEQ0(0x805d, 0x00), + REG_SEQ0(0x805a, 0x01), + REG_SEQ0(0x805a, 0x00), + }; + + ret = request_firmware(&fw, "lt9611uxc_fw.bin", lt9611uxc->dev); + if (ret < 0) + return ret; + + dev_info(lt9611uxc->dev, "Updating firmware\n"); + lt9611uxc_lock(lt9611uxc); + + regmap_multi_reg_write(lt9611uxc->regmap, seq_setup, ARRAY_SIZE(seq_setup)); + + /* + * Need erase block 2 timess here. Sometimes, block erase can fail. + * This is a workaroud. + */ + regmap_multi_reg_write(lt9611uxc->regmap, seq_block_erase, ARRAY_SIZE(seq_block_erase)); + msleep(3000); + regmap_multi_reg_write(lt9611uxc->regmap, seq_block_erase, ARRAY_SIZE(seq_block_erase)); + msleep(3000); + + for (offset = 0, remain = fw->size; + remain >= LT9611UXC_FW_PAGE_SIZE; + offset += LT9611UXC_FW_PAGE_SIZE, remain -= LT9611UXC_FW_PAGE_SIZE) + lt9611uxc_firmware_write_page(lt9611uxc, offset, fw->data + offset); + + if (remain > 0) { + char buf[LT9611UXC_FW_PAGE_SIZE]; + + memset(buf, 0xff, LT9611UXC_FW_PAGE_SIZE); + memcpy(buf, fw->data + offset, remain); + lt9611uxc_firmware_write_page(lt9611uxc, offset, buf); + } + msleep(20); + + readbuf = lt9611uxc_firmware_read(lt9611uxc, fw->size); + if (!readbuf) { + ret = -ENOMEM; + goto out; + } + + if (!memcmp(readbuf, fw->data, fw->size)) { + dev_err(lt9611uxc->dev, "Firmware update failed\n"); + print_hex_dump(KERN_ERR, "fw: ", DUMP_PREFIX_OFFSET, 16, 1, readbuf, fw->size, false); + ret = -EINVAL; + } else { + dev_info(lt9611uxc->dev, "Firmware updates successfully\n"); + ret = 0; + } + kfree(readbuf); + +out: + lt9611uxc_unlock(lt9611uxc); + lt9611uxc_reset(lt9611uxc); + release_firmware(fw); + + return ret; +} + +static ssize_t lt9611uxc_firmware_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) +{ + struct lt9611uxc *lt9611uxc = dev_get_drvdata(dev); + int ret; + + ret = lt9611uxc_firmware_update(lt9611uxc); + if (ret < 0) + return ret; + return len; +} + +static ssize_t lt9611uxc_firmware_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct lt9611uxc *lt9611uxc = dev_get_drvdata(dev); + + return snprintf(buf, PAGE_SIZE, "%02x\n", lt9611uxc->fw_version); +} + +static DEVICE_ATTR_RW(lt9611uxc_firmware); + +static struct attribute *lt9611uxc_attrs[] = { + &dev_attr_lt9611uxc_firmware.attr, + NULL, +}; + +static const struct attribute_group lt9611uxc_attr_group = { + .attrs = lt9611uxc_attrs, +}; + +static const struct attribute_group *lt9611uxc_attr_groups[] = { + <9611uxc_attr_group, + NULL, +}; + +static int lt9611uxc_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct lt9611uxc *lt9611uxc; + struct device *dev = &client->dev; + int ret; + bool fw_updated = false; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + dev_err(dev, "device doesn't support I2C\n"); + return -ENODEV; + } + + lt9611uxc = devm_kzalloc(dev, sizeof(*lt9611uxc), GFP_KERNEL); + if (!lt9611uxc) + return -ENOMEM; + + lt9611uxc->dev = &client->dev; + lt9611uxc->client = client; + mutex_init(<9611uxc->ocm_lock); + + lt9611uxc->regmap = devm_regmap_init_i2c(client, <9611uxc_regmap_config); + if (IS_ERR(lt9611uxc->regmap)) { + dev_err(lt9611uxc->dev, "regmap i2c init failed\n"); + return PTR_ERR(lt9611uxc->regmap); + } + + ret = lt9611uxc_parse_dt(&client->dev, lt9611uxc); + if (ret) { + dev_err(dev, "failed to parse device tree\n"); + return ret; + } + + ret = lt9611uxc_gpio_init(lt9611uxc); + if (ret < 0) + goto err_of_put; + + ret = lt9611uxc_regulator_init(lt9611uxc); + if (ret < 0) + goto err_of_put; + + lt9611uxc_assert_5v(lt9611uxc); + + ret = lt9611uxc_regulator_enable(lt9611uxc); + if (ret) + goto err_of_put; + + lt9611uxc_reset(lt9611uxc); + + ret = lt9611uxc_read_device_rev(lt9611uxc); + if (ret) { + dev_err(dev, "failed to read chip rev\n"); + goto err_disable_regulators; + } + +retry: + ret = lt9611uxc_read_version(lt9611uxc); + if (ret < 0) { + dev_err(dev, "failed to read FW version\n"); + goto err_disable_regulators; + } else if (ret == 0) { + if (!fw_updated) { + fw_updated = true; + dev_err(dev, "FW version 0, enforcing firmware update\n"); + ret = lt9611uxc_firmware_update(lt9611uxc); + if (ret < 0) + goto err_disable_regulators; + else + goto retry; + } else { + dev_err(dev, "FW version 0, update failed\n"); + ret = -EOPNOTSUPP; + goto err_disable_regulators; + } + } else if (ret < 0x40) { + dev_info(dev, "FW version 0x%x, HPD not supported\n", ret); + } else { + lt9611uxc->hpd_supported = true; + } + lt9611uxc->fw_version = ret; + + init_waitqueue_head(<9611uxc->wq); + ret = devm_request_threaded_irq(dev, client->irq, NULL, + lt9611uxc_irq_thread_handler, + IRQF_ONESHOT, "lt9611uxc", lt9611uxc); + if (ret) { + dev_err(dev, "failed to request irq\n"); + goto err_disable_regulators; + } + + i2c_set_clientdata(client, lt9611uxc); + + lt9611uxc->bridge.funcs = <9611uxc_bridge_funcs; + lt9611uxc->bridge.of_node = client->dev.of_node; + lt9611uxc->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; + if (lt9611uxc->hpd_supported) + lt9611uxc->bridge.ops |= DRM_BRIDGE_OP_HPD; + lt9611uxc->bridge.type = DRM_MODE_CONNECTOR_HDMIA; + + drm_bridge_add(<9611uxc->bridge); + + return lt9611uxc_audio_init(dev, lt9611uxc); + +err_disable_regulators: + regulator_bulk_disable(ARRAY_SIZE(lt9611uxc->supplies), lt9611uxc->supplies); + +err_of_put: + of_node_put(lt9611uxc->dsi1_node); + of_node_put(lt9611uxc->dsi0_node); + + return ret; +} + +static int lt9611uxc_remove(struct i2c_client *client) +{ + struct lt9611uxc *lt9611uxc = i2c_get_clientdata(client); + + disable_irq(client->irq); + lt9611uxc_audio_exit(lt9611uxc); + drm_bridge_remove(<9611uxc->bridge); + + mutex_destroy(<9611uxc->ocm_lock); + + regulator_bulk_disable(ARRAY_SIZE(lt9611uxc->supplies), lt9611uxc->supplies); + + of_node_put(lt9611uxc->dsi1_node); + of_node_put(lt9611uxc->dsi0_node); + + return 0; +} + +static struct i2c_device_id lt9611uxc_id[] = { + { "lontium,lt9611uxc", 0 }, + { /* sentinel */ } +}; + +static const struct of_device_id lt9611uxc_match_table[] = { + { .compatible = "lontium,lt9611uxc" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, lt9611uxc_match_table); + +static struct i2c_driver lt9611uxc_driver = { + .driver = { + .name = "lt9611uxc", + .of_match_table = lt9611uxc_match_table, + .dev_groups = lt9611uxc_attr_groups, + }, + .probe = lt9611uxc_probe, + .remove = lt9611uxc_remove, + .id_table = lt9611uxc_id, +}; +module_i2c_driver(lt9611uxc_driver); + +MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index f52ccffc1bd1..dcf579a4cf83 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -80,7 +80,6 @@ static int lvds_codec_probe(struct platform_device *pdev) struct device_node *panel_node; struct drm_panel *panel; struct lvds_codec *lvds_codec; - int ret; lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL); if (!lvds_codec) @@ -90,13 +89,9 @@ static int lvds_codec_probe(struct platform_device *pdev) lvds_codec->connector_type = (uintptr_t)of_device_get_match_data(dev); lvds_codec->vcc = devm_regulator_get(lvds_codec->dev, "power"); - if (IS_ERR(lvds_codec->vcc)) { - ret = PTR_ERR(lvds_codec->vcc); - if (ret != -EPROBE_DEFER) - dev_err(lvds_codec->dev, - "Unable to get \"vcc\" supply: %d\n", ret); - return ret; - } + if (IS_ERR(lvds_codec->vcc)) + return dev_err_probe(dev, PTR_ERR(lvds_codec->vcc), + "Unable to get \"vcc\" supply\n"); lvds_codec->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown", GPIOD_OUT_HIGH); diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index 33fd33f953ec..89558e581530 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -17,6 +17,7 @@ #include <linux/i2c.h> #include <linux/module.h> #include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include <linux/clk.h> #include <drm/drm_atomic_helper.h> @@ -168,6 +169,7 @@ struct sii902x { struct drm_connector connector; struct gpio_desc *reset_gpio; struct i2c_mux_core *i2cmux; + struct regulator_bulk_data supplies[2]; /* * Mutex protects audio and video functions from interfering * each other, by keeping their i2c command sequences atomic. @@ -954,41 +956,13 @@ static const struct drm_bridge_timings default_sii902x_timings = { | DRM_BUS_FLAG_DE_HIGH, }; -static int sii902x_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int sii902x_init(struct sii902x *sii902x) { - struct device *dev = &client->dev; + struct device *dev = &sii902x->i2c->dev; unsigned int status = 0; - struct sii902x *sii902x; u8 chipid[4]; int ret; - ret = i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_BYTE_DATA); - if (!ret) { - dev_err(dev, "I2C adapter not suitable\n"); - return -EIO; - } - - sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); - if (!sii902x) - return -ENOMEM; - - sii902x->i2c = client; - sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); - if (IS_ERR(sii902x->regmap)) - return PTR_ERR(sii902x->regmap); - - sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", - GPIOD_OUT_LOW); - if (IS_ERR(sii902x->reset_gpio)) { - dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", - PTR_ERR(sii902x->reset_gpio)); - return PTR_ERR(sii902x->reset_gpio); - } - - mutex_init(&sii902x->mutex); - sii902x_reset(sii902x); ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0); @@ -1012,11 +986,11 @@ static int sii902x_probe(struct i2c_client *client, regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); - if (client->irq > 0) { + if (sii902x->i2c->irq > 0) { regmap_write(sii902x->regmap, SII902X_INT_ENABLE, SII902X_HOTPLUG_EVENT); - ret = devm_request_threaded_irq(dev, client->irq, NULL, + ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL, sii902x_interrupt, IRQF_ONESHOT, dev_name(dev), sii902x); @@ -1031,9 +1005,9 @@ static int sii902x_probe(struct i2c_client *client, sii902x_audio_codec_init(sii902x, dev); - i2c_set_clientdata(client, sii902x); + i2c_set_clientdata(sii902x->i2c, sii902x); - sii902x->i2cmux = i2c_mux_alloc(client->adapter, dev, + sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev, 1, 0, I2C_MUX_GATE, sii902x_i2c_bypass_select, sii902x_i2c_bypass_deselect); @@ -1044,6 +1018,62 @@ static int sii902x_probe(struct i2c_client *client, return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0); } +static int sii902x_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct sii902x *sii902x; + int ret; + + ret = i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_BYTE_DATA); + if (!ret) { + dev_err(dev, "I2C adapter not suitable\n"); + return -EIO; + } + + sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); + if (!sii902x) + return -ENOMEM; + + sii902x->i2c = client; + sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); + if (IS_ERR(sii902x->regmap)) + return PTR_ERR(sii902x->regmap); + + sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(sii902x->reset_gpio)) { + dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", + PTR_ERR(sii902x->reset_gpio)); + return PTR_ERR(sii902x->reset_gpio); + } + + mutex_init(&sii902x->mutex); + + sii902x->supplies[0].supply = "iovcc"; + sii902x->supplies[1].supply = "cvcc12"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sii902x->supplies), + sii902x->supplies); + if (ret < 0) + return ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(sii902x->supplies), + sii902x->supplies); + if (ret < 0) { + dev_err_probe(dev, ret, "Failed to enable supplies"); + return ret; + } + + ret = sii902x_init(sii902x); + if (ret < 0) { + regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies), + sii902x->supplies); + } + + return ret; +} + static int sii902x_remove(struct i2c_client *client) { @@ -1051,6 +1081,8 @@ static int sii902x_remove(struct i2c_client *client) i2c_mux_del_adapters(sii902x->i2cmux); drm_bridge_remove(&sii902x->bridge); + regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies), + sii902x->supplies); return 0; } diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index 9fef6413741d..feb04f127b55 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -170,7 +170,7 @@ static int dw_hdmi_i2s_hook_plugged_cb(struct device *dev, void *data, return dw_hdmi_set_plugged_cb(hdmi, fn, codec_dev); } -static struct hdmi_codec_ops dw_hdmi_i2s_ops = { +static const struct hdmi_codec_ops dw_hdmi_i2s_ops = { .hw_params = dw_hdmi_i2s_hw_params, .audio_startup = dw_hdmi_i2s_audio_startup, .audio_shutdown = dw_hdmi_i2s_audio_shutdown, diff --git a/drivers/gpu/drm/bridge/tc358764.c b/drivers/gpu/drm/bridge/tc358764.c index d89394bc5aa4..c1e35bdf9232 100644 --- a/drivers/gpu/drm/bridge/tc358764.c +++ b/drivers/gpu/drm/bridge/tc358764.c @@ -153,9 +153,10 @@ static const char * const tc358764_supplies[] = { struct tc358764 { struct device *dev; struct drm_bridge bridge; + struct drm_connector connector; struct regulator_bulk_data supplies[ARRAY_SIZE(tc358764_supplies)]; struct gpio_desc *gpio_reset; - struct drm_bridge *panel_bridge; + struct drm_panel *panel; int error; }; @@ -209,6 +210,12 @@ static inline struct tc358764 *bridge_to_tc358764(struct drm_bridge *bridge) return container_of(bridge, struct tc358764, bridge); } +static inline +struct tc358764 *connector_to_tc358764(struct drm_connector *connector) +{ + return container_of(connector, struct tc358764, connector); +} + static int tc358764_init(struct tc358764 *ctx) { u32 v = 0; @@ -271,11 +278,43 @@ static void tc358764_reset(struct tc358764 *ctx) usleep_range(1000, 2000); } +static int tc358764_get_modes(struct drm_connector *connector) +{ + struct tc358764 *ctx = connector_to_tc358764(connector); + + return drm_panel_get_modes(ctx->panel, connector); +} + +static const +struct drm_connector_helper_funcs tc358764_connector_helper_funcs = { + .get_modes = tc358764_get_modes, +}; + +static const struct drm_connector_funcs tc358764_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static void tc358764_disable(struct drm_bridge *bridge) +{ + struct tc358764 *ctx = bridge_to_tc358764(bridge); + int ret = drm_panel_disable(bridge_to_tc358764(bridge)->panel); + + if (ret < 0) + dev_err(ctx->dev, "error disabling panel (%d)\n", ret); +} + static void tc358764_post_disable(struct drm_bridge *bridge) { struct tc358764 *ctx = bridge_to_tc358764(bridge); int ret; + ret = drm_panel_unprepare(ctx->panel); + if (ret < 0) + dev_err(ctx->dev, "error unpreparing panel (%d)\n", ret); tc358764_reset(ctx); usleep_range(10000, 15000); ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); @@ -296,28 +335,71 @@ static void tc358764_pre_enable(struct drm_bridge *bridge) ret = tc358764_init(ctx); if (ret < 0) dev_err(ctx->dev, "error initializing bridge (%d)\n", ret); + ret = drm_panel_prepare(ctx->panel); + if (ret < 0) + dev_err(ctx->dev, "error preparing panel (%d)\n", ret); +} + +static void tc358764_enable(struct drm_bridge *bridge) +{ + struct tc358764 *ctx = bridge_to_tc358764(bridge); + int ret = drm_panel_enable(ctx->panel); + + if (ret < 0) + dev_err(ctx->dev, "error enabling panel (%d)\n", ret); } static int tc358764_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct tc358764 *ctx = bridge_to_tc358764(bridge); + struct drm_device *drm = bridge->dev; + int ret; + + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + + ctx->connector.polled = DRM_CONNECTOR_POLL_HPD; + ret = drm_connector_init(drm, &ctx->connector, + &tc358764_connector_funcs, + DRM_MODE_CONNECTOR_LVDS); + if (ret) { + DRM_ERROR("Failed to initialize connector\n"); + return ret; + } + + drm_connector_helper_add(&ctx->connector, + &tc358764_connector_helper_funcs); + drm_connector_attach_encoder(&ctx->connector, bridge->encoder); + ctx->connector.funcs->reset(&ctx->connector); + drm_connector_register(&ctx->connector); + + return 0; +} + +static void tc358764_detach(struct drm_bridge *bridge) +{ + struct tc358764 *ctx = bridge_to_tc358764(bridge); - return drm_bridge_attach(bridge->encoder, ctx->panel_bridge, - bridge, flags); + drm_connector_unregister(&ctx->connector); + ctx->panel = NULL; + drm_connector_put(&ctx->connector); } static const struct drm_bridge_funcs tc358764_bridge_funcs = { + .disable = tc358764_disable, .post_disable = tc358764_post_disable, + .enable = tc358764_enable, .pre_enable = tc358764_pre_enable, .attach = tc358764_attach, + .detach = tc358764_detach, }; static int tc358764_parse_dt(struct tc358764 *ctx) { - struct drm_bridge *panel_bridge; struct device *dev = ctx->dev; - struct drm_panel *panel; int ret; ctx->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); @@ -326,16 +408,12 @@ static int tc358764_parse_dt(struct tc358764 *ctx) return PTR_ERR(ctx->gpio_reset); } - ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); - if (ret) - return ret; - - panel_bridge = devm_drm_panel_bridge_add(dev, panel); - if (IS_ERR(panel_bridge)) - return PTR_ERR(panel_bridge); + ret = drm_of_find_panel_or_bridge(ctx->dev->of_node, 1, 0, &ctx->panel, + NULL); + if (ret && ret != -EPROBE_DEFER) + dev_err(dev, "cannot find panel (%d)\n", ret); - ctx->panel_bridge = panel_bridge; - return 0; + return ret; } static int tc358764_configure_regulators(struct tc358764 *ctx) @@ -381,7 +459,6 @@ static int tc358764_probe(struct mipi_dsi_device *dsi) return ret; ctx->bridge.funcs = &tc358764_bridge_funcs; - ctx->bridge.type = DRM_MODE_CONNECTOR_LVDS; ctx->bridge.of_node = dev->of_node; drm_bridge_add(&ctx->bridge); diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index ecdf9b01340f..f27306c51e4d 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -17,6 +17,8 @@ #include <linux/regmap.h> #include <linux/regulator/consumer.h> +#include <asm/unaligned.h> + #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> @@ -72,6 +74,7 @@ #define SN_AUX_ADDR_19_16_REG 0x74 #define SN_AUX_ADDR_15_8_REG 0x75 #define SN_AUX_ADDR_7_0_REG 0x76 +#define SN_AUX_ADDR_MASK GENMASK(19, 0) #define SN_AUX_LENGTH_REG 0x77 #define SN_AUX_CMD_REG 0x78 #define AUX_CMD_SEND BIT(0) @@ -106,6 +109,8 @@ #define SN_NUM_GPIOS 4 #define SN_GPIO_PHYSICAL_OFFSET 1 +#define SN_LINK_TRAINING_TRIES 10 + /** * struct ti_sn_bridge - Platform data for ti-sn65dsi86 driver. * @dev: Pointer to our device. @@ -116,6 +121,7 @@ * @debugfs: Used for managing our debugfs. * @host_node: Remote DSI node. * @dsi: Our MIPI DSI source. + * @edid: Detected EDID of eDP panel. * @refclk: Our reference clock. * @panel: Our panel. * @enable_gpio: The GPIO we toggle to enable the bridge. @@ -141,6 +147,7 @@ struct ti_sn_bridge { struct drm_bridge bridge; struct drm_connector connector; struct dentry *debugfs; + struct edid *edid; struct device_node *host_node; struct mipi_dsi_device *dsi; struct clk *refclk; @@ -262,6 +269,23 @@ connector_to_ti_sn_bridge(struct drm_connector *connector) static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector) { struct ti_sn_bridge *pdata = connector_to_ti_sn_bridge(connector); + struct edid *edid = pdata->edid; + int num, ret; + + if (!edid) { + pm_runtime_get_sync(pdata->dev); + edid = pdata->edid = drm_get_edid(connector, &pdata->aux.ddc); + pm_runtime_put(pdata->dev); + } + + if (edid && drm_edid_is_valid(edid)) { + ret = drm_connector_update_edid_property(connector, edid); + if (!ret) { + num = drm_add_edid_modes(connector, edid); + if (num) + return num; + } + } return drm_panel_get_modes(pdata->panel, connector); } @@ -673,6 +697,7 @@ static int ti_sn_link_training(struct ti_sn_bridge *pdata, int dp_rate_idx, { unsigned int val; int ret; + int i; /* set dp clk frequency value */ regmap_update_bits(pdata->regmap, SN_DATARATE_CONFIG_REG, @@ -689,19 +714,34 @@ static int ti_sn_link_training(struct ti_sn_bridge *pdata, int dp_rate_idx, goto exit; } - /* Semi auto link training mode */ - regmap_write(pdata->regmap, SN_ML_TX_MODE_REG, 0x0A); - ret = regmap_read_poll_timeout(pdata->regmap, SN_ML_TX_MODE_REG, val, - val == ML_TX_MAIN_LINK_OFF || - val == ML_TX_NORMAL_MODE, 1000, - 500 * 1000); - if (ret) { - *last_err_str = "Training complete polling failed"; - } else if (val == ML_TX_MAIN_LINK_OFF) { - *last_err_str = "Link training failed, link is off"; - ret = -EIO; + /* + * We'll try to link train several times. As part of link training + * the bridge chip will write DP_SET_POWER_D0 to DP_SET_POWER. If + * the panel isn't ready quite it might respond NAK here which means + * we need to try again. + */ + for (i = 0; i < SN_LINK_TRAINING_TRIES; i++) { + /* Semi auto link training mode */ + regmap_write(pdata->regmap, SN_ML_TX_MODE_REG, 0x0A); + ret = regmap_read_poll_timeout(pdata->regmap, SN_ML_TX_MODE_REG, val, + val == ML_TX_MAIN_LINK_OFF || + val == ML_TX_NORMAL_MODE, 1000, + 500 * 1000); + if (ret) { + *last_err_str = "Training complete polling failed"; + } else if (val == ML_TX_MAIN_LINK_OFF) { + *last_err_str = "Link training failed, link is off"; + ret = -EIO; + continue; + } + + break; } + /* If we saw quite a few retries, add a note about it */ + if (!ret && i > SN_LINK_TRAINING_TRIES / 2) + DRM_DEV_INFO(pdata->dev, "Link training needed %d retries\n", i); + exit: /* Disable the PLL if we failed */ if (ret) @@ -816,8 +856,7 @@ static void ti_sn_bridge_post_disable(struct drm_bridge *bridge) { struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); - if (pdata->refclk) - clk_disable_unprepare(pdata->refclk); + clk_disable_unprepare(pdata->refclk); pm_runtime_put_sync(pdata->dev); } @@ -839,13 +878,15 @@ static ssize_t ti_sn_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) { struct ti_sn_bridge *pdata = aux_to_ti_sn_bridge(aux); - u32 request = msg->request & ~DP_AUX_I2C_MOT; + u32 request = msg->request & ~(DP_AUX_I2C_MOT | DP_AUX_I2C_WRITE_STATUS_UPDATE); u32 request_val = AUX_CMD_REQ(msg->request); - u8 *buf = (u8 *)msg->buffer; + u8 *buf = msg->buffer; + unsigned int len = msg->size; unsigned int val; - int ret, i; + int ret; + u8 addr_len[SN_AUX_LENGTH_REG + 1 - SN_AUX_ADDR_19_16_REG]; - if (msg->size > SN_AUX_MAX_PAYLOAD_BYTES) + if (len > SN_AUX_MAX_PAYLOAD_BYTES) return -EINVAL; switch (request) { @@ -854,24 +895,21 @@ static ssize_t ti_sn_aux_transfer(struct drm_dp_aux *aux, case DP_AUX_NATIVE_READ: case DP_AUX_I2C_READ: regmap_write(pdata->regmap, SN_AUX_CMD_REG, request_val); + /* Assume it's good */ + msg->reply = 0; break; default: return -EINVAL; } - regmap_write(pdata->regmap, SN_AUX_ADDR_19_16_REG, - (msg->address >> 16) & 0xF); - regmap_write(pdata->regmap, SN_AUX_ADDR_15_8_REG, - (msg->address >> 8) & 0xFF); - regmap_write(pdata->regmap, SN_AUX_ADDR_7_0_REG, msg->address & 0xFF); - - regmap_write(pdata->regmap, SN_AUX_LENGTH_REG, msg->size); + BUILD_BUG_ON(sizeof(addr_len) != sizeof(__be32)); + put_unaligned_be32((msg->address & SN_AUX_ADDR_MASK) << 8 | len, + addr_len); + regmap_bulk_write(pdata->regmap, SN_AUX_ADDR_19_16_REG, addr_len, + ARRAY_SIZE(addr_len)); - if (request == DP_AUX_NATIVE_WRITE || request == DP_AUX_I2C_WRITE) { - for (i = 0; i < msg->size; i++) - regmap_write(pdata->regmap, SN_AUX_WDATA_REG(i), - buf[i]); - } + if (request == DP_AUX_NATIVE_WRITE || request == DP_AUX_I2C_WRITE) + regmap_bulk_write(pdata->regmap, SN_AUX_WDATA_REG(0), buf, len); /* Clear old status bits before start so we don't get confused */ regmap_write(pdata->regmap, SN_AUX_CMD_STATUS_REG, @@ -881,35 +919,52 @@ static ssize_t ti_sn_aux_transfer(struct drm_dp_aux *aux, regmap_write(pdata->regmap, SN_AUX_CMD_REG, request_val | AUX_CMD_SEND); + /* Zero delay loop because i2c transactions are slow already */ ret = regmap_read_poll_timeout(pdata->regmap, SN_AUX_CMD_REG, val, - !(val & AUX_CMD_SEND), 200, - 50 * 1000); + !(val & AUX_CMD_SEND), 0, 50 * 1000); if (ret) return ret; ret = regmap_read(pdata->regmap, SN_AUX_CMD_STATUS_REG, &val); if (ret) return ret; - else if ((val & AUX_IRQ_STATUS_NAT_I2C_FAIL) - || (val & AUX_IRQ_STATUS_AUX_RPLY_TOUT) - || (val & AUX_IRQ_STATUS_AUX_SHORT)) - return -ENXIO; - if (request == DP_AUX_NATIVE_WRITE || request == DP_AUX_I2C_WRITE) - return msg->size; + if (val & AUX_IRQ_STATUS_AUX_RPLY_TOUT) { + /* + * The hardware tried the message seven times per the DP spec + * but it hit a timeout. We ignore defers here because they're + * handled in hardware. + */ + return -ETIMEDOUT; + } - for (i = 0; i < msg->size; i++) { - unsigned int val; - ret = regmap_read(pdata->regmap, SN_AUX_RDATA_REG(i), - &val); + if (val & AUX_IRQ_STATUS_AUX_SHORT) { + ret = regmap_read(pdata->regmap, SN_AUX_LENGTH_REG, &len); if (ret) return ret; - - WARN_ON(val & ~0xFF); - buf[i] = (u8)(val & 0xFF); + } else if (val & AUX_IRQ_STATUS_NAT_I2C_FAIL) { + switch (request) { + case DP_AUX_I2C_WRITE: + case DP_AUX_I2C_READ: + msg->reply |= DP_AUX_I2C_REPLY_NACK; + break; + case DP_AUX_NATIVE_READ: + case DP_AUX_NATIVE_WRITE: + msg->reply |= DP_AUX_NATIVE_REPLY_NACK; + break; + } + return 0; } - return msg->size; + if (request == DP_AUX_NATIVE_WRITE || request == DP_AUX_I2C_WRITE || + len == 0) + return len; + + ret = regmap_bulk_read(pdata->regmap, SN_AUX_RDATA_REG(0), buf, len); + if (ret) + return ret; + + return len; } static int ti_sn_bridge_parse_dsi_host(struct ti_sn_bridge *pdata) @@ -1251,6 +1306,7 @@ static int ti_sn_bridge_remove(struct i2c_client *client) if (!pdata) return -EINVAL; + kfree(pdata->edid); ti_sn_debugfs_remove(pdata); of_node_put(pdata->host_node); diff --git a/drivers/gpu/drm/bridge/ti-tpd12s015.c b/drivers/gpu/drm/bridge/ti-tpd12s015.c index 514cbf0eac75..e0e015243a60 100644 --- a/drivers/gpu/drm/bridge/ti-tpd12s015.c +++ b/drivers/gpu/drm/bridge/ti-tpd12s015.c @@ -160,7 +160,7 @@ static int tpd12s015_probe(struct platform_device *pdev) /* Register the IRQ if the HPD GPIO is IRQ-capable. */ tpd->hpd_irq = gpiod_to_irq(tpd->hpd_gpio); - if (tpd->hpd_irq) { + if (tpd->hpd_irq >= 0) { ret = devm_request_threaded_irq(&pdev->dev, tpd->hpd_irq, NULL, tpd12s015_hpd_isr, IRQF_TRIGGER_RISING | |