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Diffstat (limited to 'driver/ppc/rt1718s.c')
| -rw-r--r-- | driver/ppc/rt1718s.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/driver/ppc/rt1718s.c b/driver/ppc/rt1718s.c deleted file mode 100644 index 96cb789cd0..0000000000 --- a/driver/ppc/rt1718s.c +++ /dev/null @@ -1,237 +0,0 @@ -/* Copyright 2021 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* Richtek RT1718S USB-C Power Path Controller */ -#include "atomic.h" -#include "common.h" -#include "config.h" -#include "console.h" -#include "driver/ppc/rt1718s.h" -#include "driver/tcpm/tcpci.h" -#include "usbc_ppc.h" -#include "util.h" - - -#define RT1718S_FLAGS_SOURCE_ENABLED BIT(0) -static atomic_t flags[CONFIG_USB_PD_PORT_MAX_COUNT]; - -#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args) - -static int read_reg(uint8_t port, int reg, int *val) -{ - if (reg > 0xFF) { - return i2c_read_offset16( - ppc_chips[port].i2c_port, - ppc_chips[port].i2c_addr_flags, - reg, val, 1); - } else { - return i2c_read8( - ppc_chips[port].i2c_port, - ppc_chips[port].i2c_addr_flags, - reg, val); - } -} - -static int write_reg(uint8_t port, int reg, int val) -{ - if (reg > 0xFF) { - return i2c_write_offset16( - ppc_chips[port].i2c_port, - ppc_chips[port].i2c_addr_flags, - reg, val, 1); - } else { - return i2c_write8( - ppc_chips[port].i2c_port, - ppc_chips[port].i2c_addr_flags, - reg, val); - } -} - -static int update_bits(int port, int reg, int mask, int val) -{ - int reg_val; - - if (mask == 0xFF) - return write_reg(port, reg, val); - - RETURN_ERROR(read_reg(port, reg, ®_val)); - - reg_val &= (~mask); - reg_val |= (mask & val); - return write_reg(port, reg, reg_val); -} - -static int rt1718s_is_sourcing_vbus(int port) -{ - return (flags[port] & RT1718S_FLAGS_SOURCE_ENABLED); -} - -static int rt1718s_vbus_source_enable(int port, int enable) -{ - atomic_t prev_flag; - - if (enable) - prev_flag = atomic_or(&flags[port], - RT1718S_FLAGS_SOURCE_ENABLED); - else - prev_flag = atomic_clear_bits(&flags[port], - RT1718S_FLAGS_SOURCE_ENABLED); - - /* Return if status doesn't change */ - if (!!(prev_flag & RT1718S_FLAGS_SOURCE_ENABLED) == !!enable) - return EC_SUCCESS; - - RETURN_ERROR(tcpm_set_src_ctrl(port, enable)); - -#if defined(CONFIG_USB_CHARGER) && defined(CONFIG_USB_PD_VBUS_DETECT_PPC) - /* - * Since the VBUS state could be changing here, need to wake the - * USB_CHG_N task so that BC 1.2 detection will be triggered. - */ - usb_charger_vbus_change(port, enable); -#endif - - return EC_SUCCESS; -} - -static int rt1718s_vbus_sink_enable(int port, int enable) -{ - return tcpm_set_snk_ctrl(port, enable); -} - -static int rt1718s_discharge_vbus(int port, int enable) -{ - return update_bits(port, - TCPC_REG_POWER_CTRL, - TCPC_REG_POWER_CTRL_FORCE_DISCHARGE, - enable ? 0xFF : 0x00); -} - -#ifdef CONFIG_CMD_PPC_DUMP -static int rt1718s_dump(int port) -{ - for (int i = 0; i <= 0xEF; i++) { - int val = 0; - int rt = read_reg(port, i, &val); - - if (i % 16 == 0) - CPRINTF("%02X: ", i); - if (rt) - CPRINTF("-- "); - else - CPRINTF("%02X ", val); - if (i % 16 == 15) - CPRINTF("\n"); - } - for (int i = 0xF200; i <= 0xF2CF; i++) { - int val = 0; - int rt = read_reg(port, i, &val); - - if (i % 16 == 0) - CPRINTF("%04X: ", i); - if (rt) - CPRINTF("-- "); - else - CPRINTF("%02X ", val); - if (i % 16 == 15) - CPRINTF("\n"); - } - - return EC_SUCCESS; -} -#endif /* defined(CONFIG_CMD_PPC_DUMP) */ - -#ifdef CONFIG_USB_PD_VBUS_DETECT_PPC -static int rt1718s_is_vbus_present(int port) -{ - __maybe_unused static atomic_t vbus_prev[CONFIG_USB_PD_PORT_MAX_COUNT]; - int status, vbus; - - if (read_reg(port, TCPC_REG_POWER_STATUS, &status)) - return 0; - - vbus = !!(status & TCPC_REG_POWER_STATUS_VBUS_PRES); - -#ifdef CONFIG_USB_CHARGER - if (!!(vbus_prev[port] != vbus)) - usb_charger_vbus_change(port, vbus); - - if (vbus) - atomic_or(&vbus_prev[port], 1); - else - atomic_clear(&vbus_prev[port]); -#endif - - return vbus; -} -#endif - -static int rt1718s_init(int port) -{ - atomic_clear(&flags[port]); - - if (IS_ENABLED(CONFIG_USB_PD_FRS_PPC)) - /* Set Rx frs unmasked */ - RETURN_ERROR(update_bits(port, RT1718S_RT_MASK1, - RT1718S_RT_MASK1_M_RX_FRS, - 0xFF)); - - return EC_SUCCESS; -} - -#ifdef CONFIG_USBC_PPC_POLARITY -static int rt1718s_set_polarity(int port, int polarity) -{ - return tcpci_tcpm_set_polarity(port, polarity); -} -#endif - -#ifdef CONFIG_USB_PD_FRS_PPC -static int rt1718s_set_frs_enable(int port, int enable) -{ - /* - * Use write instead of update to save 2 i2c read. - * Assume other bits are at their reset value. - */ - int frs_ctrl2 = 0x10, vbus_ctrl_en = 0x3F; - - if (enable) { - frs_ctrl2 |= RT1718S_FRS_CTRL2_RX_FRS_EN; - frs_ctrl2 |= RT1718S_FRS_CTRL2_VBUS_FRS_EN; - - vbus_ctrl_en |= RT1718S_VBUS_CTRL_EN_GPIO2_VBUS_PATH_EN; - vbus_ctrl_en |= RT1718S_VBUS_CTRL_EN_GPIO1_VBUS_PATH_EN; - } - - RETURN_ERROR(write_reg(port, RT1718S_FRS_CTRL2, frs_ctrl2)); - RETURN_ERROR(write_reg(port, RT1718S_VBUS_CTRL_EN, vbus_ctrl_en)); - return EC_SUCCESS; -} -#endif - -const struct ppc_drv rt1718s_ppc_drv = { - .init = &rt1718s_init, - .is_sourcing_vbus = &rt1718s_is_sourcing_vbus, - .vbus_sink_enable = &rt1718s_vbus_sink_enable, - .vbus_source_enable = &rt1718s_vbus_source_enable, -#ifdef CONFIG_CMD_PPC_DUMP - .reg_dump = &rt1718s_dump, -#endif /* defined(CONFIG_CMD_PPC_DUMP) */ - -#ifdef CONFIG_USB_PD_VBUS_DETECT_PPC - .is_vbus_present = &rt1718s_is_vbus_present, -#endif /* defined(CONFIG_USB_PD_VBUS_DETECT_PPC) */ - .discharge_vbus = &rt1718s_discharge_vbus, -#ifdef CONFIG_USBC_PPC_POLARITY - .set_polarity = &rt1718s_set_polarity, -#endif -#ifdef CONFIG_USBC_PPC_VCONN - .set_vconn = &tcpci_tcpm_set_vconn, -#endif -#ifdef CONFIG_USB_PD_FRS_PPC - .set_frs_enable = rt1718s_set_frs_enable, -#endif -}; |