diff options
Diffstat (limited to 'driver/led')
| -rw-r--r-- | driver/led/ds2413.c | 166 | ||||
| -rw-r--r-- | driver/led/lm3509.c | 85 | ||||
| -rw-r--r-- | driver/led/lm3509.h | 37 | ||||
| -rw-r--r-- | driver/led/lm3630a.c | 86 | ||||
| -rw-r--r-- | driver/led/lm3630a.h | 68 | ||||
| -rw-r--r-- | driver/led/lp5562.c | 160 | ||||
| -rw-r--r-- | driver/led/lp5562.h | 76 | ||||
| -rw-r--r-- | driver/led/max695x.c | 123 | ||||
| -rw-r--r-- | driver/led/max695x.h | 44 | ||||
| -rw-r--r-- | driver/led/oz554.c | 147 | ||||
| -rw-r--r-- | driver/led/oz554.h | 35 |
11 files changed, 0 insertions, 1027 deletions
diff --git a/driver/led/ds2413.c b/driver/led/ds2413.c deleted file mode 100644 index b856d85671..0000000000 --- a/driver/led/ds2413.c +++ /dev/null @@ -1,166 +0,0 @@ -/* Copyright 2013 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. - */ - -/* Power LED control for Chrome EC */ - -#include "charge_state.h" -#include "console.h" -#include "hooks.h" -#include "onewire.h" -#include "timer.h" -#include "util.h" - -#define ONEWIRE_RETRIES 10 - -enum led_color { - LED_OFF = 0, - LED_RED, - LED_YELLOW, - LED_GREEN, - LED_COLOR_COUNT /* Number of colors, not a color itself */ -}; - -static const uint8_t led_masks[LED_COLOR_COUNT] = {0xff, 0xfe, 0xfc, 0xfd}; -static const char * const color_names[LED_COLOR_COUNT] = { - "off", "red", "yellow", "green"}; - -/** - * Set the onewire LED GPIO controller outputs - * - * @param mask Mask of outputs to enable - * - * @return EC_SUCCESS, or non-zero if error. - */ -static int led_set_mask(int mask) -{ - int rv; - - /* Reset the 1-wire bus */ - rv = onewire_reset(); - if (rv) - return rv; - - /* Skip ROM, since only one device */ - onewire_write(0xcc); - - /* Write and turn on the LEDs */ - onewire_write(0x5a); - onewire_write(mask); - onewire_write(~mask); /* Repeat inverted */ - - rv = onewire_read(); /* Confirmation byte */ - if (rv != 0xaa) - return EC_ERROR_UNKNOWN; - - /* The next byte is a read-back of the chip status. Since we're only - * using lines as outputs, we can ignore it. */ - return EC_SUCCESS; -} - -static int led_set(enum led_color color) -{ - int rv = EC_SUCCESS; - int i; - - /* - * 1-wire communication can fail for timing reasons in the current - * system. We have a limited timing window to send/receive bits, but - * we can't disable interrupts for the rest of the system to guarantee - * we hit that window. Instead, simply retry the low-level command a - * few times. - */ - for (i = 0; i < ONEWIRE_RETRIES; i++) { - rv = led_set_mask(led_masks[color]); - if (rv == EC_SUCCESS) - break; - - /* - * Sleep for a bit between tries. This gives the 1-wire GPIO - * chip time to recover from the failed attempt, and allows - * lower-priority tasks a chance to run. - */ - usleep(100); - } - - return rv; -} - -/*****************************************************************************/ -/* Hooks */ - -static void onewire_led_tick(void) -{ - static enum led_color current_color = LED_COLOR_COUNT; - static int tick_count; - - enum led_color new_color = LED_OFF; - uint32_t chflags = charge_get_flags(); - - tick_count++; - - if (!(chflags & CHARGE_FLAG_EXTERNAL_POWER)) { - /* AC isn't present, so the power LED on the AC plug is off */ - current_color = LED_OFF; - return; - } - - /* Translate charge state to LED color */ - switch (charge_get_state()) { - case PWR_STATE_IDLE: - if (chflags & CHARGE_FLAG_FORCE_IDLE) - new_color = (tick_count & 1) ? LED_GREEN : LED_OFF; - else - new_color = LED_GREEN; - break; - case PWR_STATE_CHARGE: - new_color = LED_YELLOW; - break; - case PWR_STATE_CHARGE_NEAR_FULL: - new_color = LED_GREEN; - break; - case PWR_STATE_ERROR: - new_color = LED_RED; - break; - default: - /* Other states don't change LED color */ - break; - } - - /* - * The power adapter on link can partially unplug and lose its LED - * state. There's no way to detect this, so just assume it forgets its - * state every 10 seconds. - */ - if (!(tick_count % 10)) - current_color = LED_COLOR_COUNT; - - /* If current color is still correct, leave now */ - if (new_color == current_color) - return; - - /* Update LED */ - if (!led_set(new_color)) - current_color = new_color; -} -DECLARE_HOOK(HOOK_SECOND, onewire_led_tick, HOOK_PRIO_DEFAULT); - -/*****************************************************************************/ -/* Console commands */ -#define CONFIG_CMD_POWERLED -static int command_powerled(int argc, char **argv) -{ - int i; - - /* Pick a color, any color... */ - for (i = 0; i < LED_COLOR_COUNT; i++) { - if (!strcasecmp(argv[1], color_names[i])) - return led_set(i); - } - return EC_ERROR_PARAM1; -} -DECLARE_CONSOLE_COMMAND(powerled, command_powerled, - "<off | red | yellow | green>", - "Set power LED color"); -#endif diff --git a/driver/led/lm3509.c b/driver/led/lm3509.c deleted file mode 100644 index 7c20c43ac2..0000000000 --- a/driver/led/lm3509.c +++ /dev/null @@ -1,85 +0,0 @@ -/* Copyright 2018 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. - * - * TI LM3509 LED driver. - */ - -#include "compile_time_macros.h" -#include "i2c.h" -#include "keyboard_backlight.h" -#include "lm3509.h" - -static inline int lm3509_write(uint8_t reg, uint8_t val) -{ - return i2c_write8(I2C_PORT_KBLIGHT, LM3509_I2C_ADDR_FLAGS, - reg, val); -} - -static inline int lm3509_read(uint8_t reg, int *val) -{ - return i2c_read8(I2C_PORT_KBLIGHT, LM3509_I2C_ADDR_FLAGS, - reg, val); -} - -/* Brightness level (0.0 to 100.0%) to brightness register conversion table */ -static const uint16_t lm3509_brightness[32] = { - 0, 1, 6, 10, 11, 13, 16, 20, - 24, 28, 31, 37, 43, 52, 62, 75, - 87, 100, 125, 150, 168, 187, 225, 262, - 312, 375, 437, 525, 612, 700, 875, 1000 -}; - -static int brightness_to_bmain(int percent) -{ - int i; - int b = percent * 10; - - for (i = 1; i < sizeof(lm3509_brightness); i++) { - int low = lm3509_brightness[i - 1]; - int high = lm3509_brightness[i]; - if (high < b) - continue; - /* rounding to the nearest */ - return (b - low < high - b) ? i - 1 : i; - } - /* Brightness is out of range. Return the highest value. */ - return i - 1; -} - -static int lm3509_power(int enable) -{ - /* Enable both MAIN and SUB in unison mode. - * Don't alter brightness here. It's not driver's business. */ - return lm3509_write(LM3509_REG_GP, enable ? 0x7 : 0); -} - -static int lm3509_set_brightness(int percent) -{ - /* We don't need to read/mask/write BMAIN because bit6 and 7 are non - * functional read only bits. - */ - return lm3509_write(LM3509_REG_BMAIN, brightness_to_bmain(percent)); -} - -static int lm3509_get_brightness(void) -{ - int rv, val; - rv = lm3509_read(LM3509_REG_BMAIN, &val); - if (rv) - return -1; - val &= LM3509_BMAIN_MASK; - return lm3509_brightness[val] / 10; -} - -static int lm3509_init(void) -{ - return EC_SUCCESS; -} - -const struct kblight_drv kblight_lm3509 = { - .init = lm3509_init, - .set = lm3509_set_brightness, - .get = lm3509_get_brightness, - .enable = lm3509_power, -}; diff --git a/driver/led/lm3509.h b/driver/led/lm3509.h deleted file mode 100644 index a7defe1fb7..0000000000 --- a/driver/led/lm3509.h +++ /dev/null @@ -1,37 +0,0 @@ -/* Copyright 2018 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. - * - * TI LM3509 LED driver. - */ - -#ifndef __CROS_EC_LM3509_H -#define __CROS_EC_LM3509_H - -#define LM3509_I2C_ADDR_FLAGS 0x36 - -/* - * General purpose register - * - * [2]= set both main and secondary current same - * both control by BMAIN. - * [1]= enable secondary current sink. - * [0]= enable main current sink. - */ -#define LM3509_REG_GP 0x10 - -/* - * Brightness register - * - * 0x00: 0% - * 0x1F: 100% - * Power-on-value: 0% (0xE0) - */ -#define LM3509_REG_BMAIN 0xA0 -#define LM3509_REG_BSUB 0xB0 - -#define LM3509_BMAIN_MASK 0x1F - -extern const struct kblight_drv kblight_lm3509; - -#endif /* __CROS_EC_LM3509_H */ diff --git a/driver/led/lm3630a.c b/driver/led/lm3630a.c deleted file mode 100644 index a2c4aaa74c..0000000000 --- a/driver/led/lm3630a.c +++ /dev/null @@ -1,86 +0,0 @@ -/* Copyright 2018 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. - * - * TI LM3630A LED driver. - */ - -#include "hooks.h" -#include "i2c.h" -#include "lm3630a.h" -#include "timer.h" - - -/* I2C address */ -#define LM3630A_I2C_ADDR_FLAGS 0x36 - -static inline int lm3630a_write(uint8_t reg, uint8_t val) -{ - return i2c_write8(I2C_PORT_KBLIGHT, LM3630A_I2C_ADDR_FLAGS, - reg, val); -} - -static inline int lm3630a_read(uint8_t reg, int *val) -{ - return i2c_read8(I2C_PORT_KBLIGHT, LM3630A_I2C_ADDR_FLAGS, - reg, val); -} - -static void deferred_lm3630a_poweron(void) -{ - /* - * Set full brightness so that PWM will control. This needs to happen - * after setting the control register, because enabling the banks - * resets the value to 0. - */ - lm3630a_write(LM3630A_REG_A_BRIGHTNESS, 0xff); -} -DECLARE_DEFERRED(deferred_lm3630a_poweron); - -int lm3630a_poweron(void) -{ - int ret = 0; - - /* - * LM3630A will NAK I2C transactions for 1ms (tWAIT in the datasheet) - * after HWEN asserted or after SW reset. - */ - msleep(1); - - /* Sample PWM every 8 periods. */ - ret |= lm3630a_write(LM3630A_REG_FILTER_STRENGTH, 0x3); - - /* Enable feedback and PWM for banks A. */ - ret |= lm3630a_write(LM3630A_REG_CONFIG, - LM3630A_CFG_BIT_FB_EN_A | - LM3630A_CFG_BIT_PWM_EN_A); - - /* 24V, 800mA overcurrent protection, 500kHz boost frequency. */ - ret |= lm3630a_write(LM3630A_REG_BOOST_CONTROL, - LM3630A_BOOST_OVP_24V | - LM3630A_BOOST_OCP_800MA | - LM3630A_FMODE_500KHZ); - - /* Limit current to 24.5mA */ - ret |= lm3630a_write(LM3630A_REG_A_CURRENT, 0x1a); - - /* Enable bank A, put in linear mode, and connect LED2 to bank A. */ - ret |= lm3630a_write(LM3630A_REG_CONTROL, - LM3630A_CTRL_BIT_LINEAR_A | - LM3630A_CTRL_BIT_LED_EN_A | - LM3630A_CTRL_BIT_LED2_ON_A); - - /* - * Only set the brightness after ~100 ms. Without this, LED may blink - * for a short duration, as the PWM sampler sometimes appears to be - * confused, and slowly dim from a large initial PWM input value. - */ - hook_call_deferred(&deferred_lm3630a_poweron_data, 100 * MSEC); - - return ret; -} - -int lm3630a_poweroff(void) -{ - return lm3630a_write(LM3630A_REG_CONTROL, LM3630A_CTRL_BIT_SLEEP_CMD); -} diff --git a/driver/led/lm3630a.h b/driver/led/lm3630a.h deleted file mode 100644 index d43304b66e..0000000000 --- a/driver/led/lm3630a.h +++ /dev/null @@ -1,68 +0,0 @@ -/* Copyright 2018 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. - * - * TI LM3630A LED driver. - */ - -#ifndef __CROS_EC_LM3630A_H -#define __CROS_EC_LM3630A_H - -#define LM3630A_REG_CONTROL 0x00 -#define LM3630A_REG_CONFIG 0x01 -#define LM3630A_REG_BOOST_CONTROL 0x02 -#define LM3630A_REG_A_BRIGHTNESS 0x03 -#define LM3630A_REG_B_BRIGHTNESS 0x04 -#define LM3630A_REG_A_CURRENT 0x05 -#define LM3630A_REG_B_CURRENT 0x06 -#define LM3630A_REG_ONOFF_RAMP 0x07 -#define LM3630A_REG_RUN_RAMP 0x08 -#define LM3630A_REG_INT_STATUS 0x09 -#define LM3630A_REG_INT_ENABLE 0x0a -#define LM3630A_REG_FAULT_STATUS 0x0b -#define LM3630A_REG_SW_RESET 0x0f -#define LM3630A_REG_PWM_OUT_LOW 0x12 -#define LM3630A_REG_PWM_OUT_HIGH 0x13 -#define LM3630A_REG_REVISION 0x1f -#define LM3630A_REG_FILTER_STRENGTH 0x50 - -/* Control register bits */ -#define LM3630A_CTRL_BIT_SLEEP_CMD BIT(7) -#define LM3630A_CTRL_BIT_SLEEP_STAT BIT(6) -#define LM3630A_CTRL_BIT_LINEAR_A BIT(4) -#define LM3630A_CTRL_BIT_LINEAR_B BIT(3) -#define LM3630A_CTRL_BIT_LED_EN_A BIT(2) -#define LM3630A_CTRL_BIT_LED_EN_B BIT(1) -#define LM3630A_CTRL_BIT_LED2_ON_A BIT(0) - -/* Config register bits */ -#define LM3630A_CFG_BIT_FB_EN_B BIT(4) -#define LM3630A_CFG_BIT_FB_EN_A BIT(3) -#define LM3630A_CFG_BIT_PWM_LOW BIT(2) -#define LM3630A_CFG_BIT_PWM_EN_B BIT(1) -#define LM3630A_CFG_BIT_PWM_EN_A BIT(0) - -/* Boost control register bits */ -#define LM3630A_BOOST_OVP_16V (0 << 5) -#define LM3630A_BOOST_OVP_24V BIT(5) -#define LM3630A_BOOST_OVP_32V (2 << 5) -#define LM3630A_BOOST_OVP_40V (3 << 5) -#define LM3630A_BOOST_OCP_600MA (0 << 3) -#define LM3630A_BOOST_OCP_800MA BIT(3) -#define LM3630A_BOOST_OCP_1000MA (2 << 3) -#define LM3630A_BOOST_OCP_1200MA (3 << 3) -#define LM3630A_BOOST_SLOW_START BIT(2) -#define LM3630A_SHIFT_500KHZ (0 << 1) /* FMODE=0 */ -#define LM3630A_SHIFT_560KHZ BIT(1) /* FMODE=0 */ -#define LM3630A_SHIFT_1000KHZ (0 << 1) /* FMODE=1 */ -#define LM3630A_SHIFT_1120KHZ BIT(1) /* FMODE=1 */ -#define LM3630A_FMODE_500KHZ (0 << 0) -#define LM3630A_FMODE_1000KHZ BIT(0) - -/* Power on and initialize LM3630A. */ -int lm3630a_poweron(void); - -/* Power off LM3630A. */ -int lm3630a_poweroff(void); - -#endif /* __CROS_EC_LM3630A_H */ diff --git a/driver/led/lp5562.c b/driver/led/lp5562.c deleted file mode 100644 index e0758a8b91..0000000000 --- a/driver/led/lp5562.c +++ /dev/null @@ -1,160 +0,0 @@ -/* Copyright 2013 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. - * - * TI LP5562 driver. - */ - -#include "console.h" -#include "i2c.h" -#include "lp5562.h" -#include "timer.h" -#include "util.h" - -/* I2C address */ -#define LP5562_I2C_ADDR_FLAGS 0x30 - -inline int lp5562_write(uint8_t reg, uint8_t val) -{ - return i2c_write8(I2C_PORT_MASTER, LP5562_I2C_ADDR_FLAGS, reg, val); -} - -inline int lp5562_read(uint8_t reg, int *val) -{ - return i2c_read8(I2C_PORT_MASTER, LP5562_I2C_ADDR_FLAGS, reg, val); -} - -int lp5562_set_color(uint32_t rgb) -{ - int ret = 0; - - ret |= lp5562_write(LP5562_REG_B_PWM, rgb & 0xff); - ret |= lp5562_write(LP5562_REG_G_PWM, (rgb >> 8) & 0xff); - ret |= lp5562_write(LP5562_REG_R_PWM, (rgb >> 16) & 0xff); - - return ret; -} - -int lp5562_set_engine(uint8_t r, uint8_t g, uint8_t b) -{ - return lp5562_write(LP5562_REG_LED_MAP, (r << 4) | (g << 2) | b); -} - -int lp5562_engine_load(int engine, const uint8_t *program, int size) -{ - int prog_addr = LP5562_REG_ENG_PROG(engine); - int i, ret, val; - int shift = 6 - engine * 2; - - ret = lp5562_read(LP5562_REG_OP_MODE, &val); - if (ret) - return ret; - val &= ~(0x3 << shift); - val |= 0x1 << shift; - ret = lp5562_write(LP5562_REG_OP_MODE, val); - if (ret) - return ret; - - for (i = 0; i < size; ++i) { - ret = lp5562_write(prog_addr + i, program[i]); - if (ret) - return ret; - } - - val &= ~(0x3 << shift); - val |= 0x2 << shift; - ret = lp5562_write(LP5562_REG_OP_MODE, val); - - return ret; -} - -int lp5562_engine_control(int eng1, int eng2, int eng3) -{ - int ret, val; - - ret = lp5562_read(LP5562_REG_ENABLE, &val); - if (ret) - return ret; - val &= 0xc0; - val |= (eng1 << 4) | (eng2 << 2) | eng3; - return lp5562_write(LP5562_REG_ENABLE, val); -} - -int lp5562_get_engine_state(int engine) -{ - int val; - - if (lp5562_read(LP5562_REG_ENABLE, &val)) - return 0xee; - return (val >> (6 - engine * 2)) & 0x3; -} - -int lp5562_poweron(void) -{ - int ret = 0; - - ret |= lp5562_write(LP5562_REG_ENABLE, 0x40); - udelay(500); /* start-up delay */ - - ret |= lp5562_write(LP5562_REG_CONFIG, 0x1); - ret |= lp5562_write(LP5562_REG_LED_MAP, 0x0); - - return ret; -} - -int lp5562_poweroff(void) -{ - return lp5562_write(LP5562_REG_ENABLE, 0x0); -} - -int lp5562_get_pc(int engine) -{ - int ret; - if (lp5562_read(LP5562_REG_ENG1_PC + engine - 1, &ret)) - return 0xee; - return ret; -} - -int lp5562_set_pc(int engine, int val) -{ - return lp5562_write(LP5562_REG_ENG1_PC + engine - 1, val); -} - -/*****************************************************************************/ -/* Console commands */ -#ifdef CONFIG_CMD_POWERLED -static int command_lp5562(int argc, char **argv) -{ - if (argc == 4) { - char *e; - uint8_t red, green, blue; - - red = strtoi(argv[1], &e, 0); - if (e && *e) - return EC_ERROR_PARAM1; - green = strtoi(argv[2], &e, 0); - if (e && *e) - return EC_ERROR_PARAM2; - blue = strtoi(argv[3], &e, 0); - if (e && *e) - return EC_ERROR_PARAM3; - - return lp5562_set_color((red << 16) | (green << 8) | blue); - } else if (argc == 2) { - int v; - - if (!parse_bool(argv[1], &v)) - return EC_ERROR_PARAM1; - - if (v) - return lp5562_poweron(); - else - return lp5562_poweroff(); - } - - return EC_ERROR_INVAL; -} -DECLARE_CONSOLE_COMMAND(lp5562, command_lp5562, - "on | off | <red> <green> <blue>", - "Set the color of the LED"); -#endif diff --git a/driver/led/lp5562.h b/driver/led/lp5562.h deleted file mode 100644 index 75e820aab7..0000000000 --- a/driver/led/lp5562.h +++ /dev/null @@ -1,76 +0,0 @@ -/* Copyright 2013 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. - * - * TI LP5562 LED driver. - */ - -#ifndef __CROS_EC_LP5562_H -#define __CROS_EC_LP5562_H - -#define LP5562_REG_ENABLE 0x00 -#define LP5562_REG_OP_MODE 0x01 -#define LP5562_REG_B_PWM 0x02 -#define LP5562_REG_G_PWM 0x03 -#define LP5562_REG_R_PWM 0x04 -#define LP5562_REG_B_CURRENT 0x05 -#define LP5562_REG_G_CURRENT 0x06 -#define LP5562_REG_R_CURRENT 0x07 -#define LP5562_REG_CONFIG 0x08 -#define LP5562_REG_ENG1_PC 0x09 -#define LP5562_REG_ENG2_PC 0x0a -#define LP5562_REG_ENG3_PC 0x0b -#define LP5562_REG_STATUS 0x0c -#define LP5562_REG_RESET 0x0d -#define LP5562_REG_W_PWM 0x0e -#define LP5562_REG_W_CURRENT 0x0f -#define LP5562_REG_LED_MAP 0x70 - -#define LP5562_REG_ENG_PROG(n) (0x10 + ((n)-1) * 0x20) - -/* Brightness range: 0x00 - 0xff */ -#define LP5562_COLOR_NONE 0x000000 -#define LP5562_COLOR_RED(b) (0x010000 * (b)) -#define LP5562_COLOR_GREEN(b) (0x000100 * (b)) -#define LP5562_COLOR_BLUE(b) (0x000001 * (b)) - -#define LP5562_ENG_SEL_NONE 0x0 -#define LP5562_ENG_SEL_1 0x1 -#define LP5562_ENG_SEL_2 0x2 -#define LP5562_ENG_SEL_3 0x3 - -#define LP5562_ENG_HOLD 0x0 -#define LP5562_ENG_STEP 0x1 -#define LP5562_ENG_RUN 0x2 - -/* Power on and initialize LP5562. */ -int lp5562_poweron(void); - -/* Power off LP5562. */ -int lp5562_poweroff(void); - -/* - * Set LED color. - * The parameter 'rgb' is in the format 0x00RRGGBB. - */ -int lp5562_set_color(uint32_t rgb); - -/* Set lighting engine used by each color */ -int lp5562_set_engine(uint8_t r, uint8_t g, uint8_t b); - -/* Load lighting engine program */ -int lp5562_engine_load(int engine, const uint8_t *program, int size); - -/* Control lighting engine execution state */ -int lp5562_engine_control(int eng1, int eng2, int eng3); - -/* Get engine execution state. Return 0xee on error. */ -int lp5562_get_engine_state(int engine); - -/* Get current program counter. Return 0xee on error. */ -int lp5562_get_pc(int engine); - -/* Set program counter */ -int lp5562_set_pc(int engine, int val); - -#endif /* __CROS_EC_LP5562_H */ diff --git a/driver/led/max695x.c b/driver/led/max695x.c deleted file mode 100644 index 6f0e1b8e84..0000000000 --- a/driver/led/max695x.c +++ /dev/null @@ -1,123 +0,0 @@ -/* Copyright 2019 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. - * - * MAX6958/MAX6959 7-Segment LED Display Driver - */ - -#include "common.h" -#include "console.h" -#include "display_7seg.h" -#include "hooks.h" -#include "i2c.h" -#include "max695x.h" -#include "util.h" - -#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args) - -static inline int max695x_i2c_write8(uint8_t offset, uint8_t data) -{ - return i2c_write8(I2C_PORT_PORT80, PORT80_I2C_ADDR, - offset, (int)data); -} - -static inline int max695x_i2c_write(uint8_t offset, uint8_t *data, int len) -{ - /* - * The address pointer stored in the MAX695x increments after - * each data byte is written unless the address equals 01111111 - */ - return i2c_write_block(I2C_PORT_PORT80, PORT80_I2C_ADDR, - offset, data, len); -} - -int display_7seg_write(enum seven_seg_module_display module, uint16_t data) -{ - uint8_t buf[4]; - - /* - * Convert the data into binary coded hexadecimal value i.e. - * in hexadecimal code-decode mode, the decoder prints 1 byte - * on two segments. It checks the lower nibble of the data in - * the digit register (D3–D0), disregarding bits D7–D4. Hence, - * preparing the hexadecimal buffer to be sent. - * - * Segment 3-2 : Module name - * 0xEC : EC - * 0x80 : PORT80 - * Segment 1-0 : Data - * For console Command segment 3-0 : Data - */ - switch (module) { - case SEVEN_SEG_CONSOLE_DISPLAY: - /* Segment - 3 */ - buf[0] = (data >> 12) & 0x0F; - /* Segment - 2 */ - buf[1] = (data >> 8) & 0x0F; - break; - case SEVEN_SEG_EC_DISPLAY: - /* Segment - 3 */ - buf[0] = 0x0E; - /* Segment - 2 */ - buf[1] = 0x0C; - break; - case SEVEN_SEG_PORT80_DISPLAY: - /* Segment - 3 */ - buf[0] = 0x08; - /* Segment - 2 */ - buf[1] = 0x00; - break; - default: - CPRINTS("Unknown Module"); - return EC_ERROR_UNKNOWN; - } - /* Segment - 1 */ - buf[2] = (data >> 4) & 0x0F; - /* Segment - 0 */ - buf[3] = data & 0x0F; - - return max695x_i2c_write(MAX695X_DIGIT0_ADDR, buf, ARRAY_SIZE(buf)); -} - -/** - * Initialise MAX656x 7-segment display. - */ -static void max695x_init(void) -{ - uint8_t buf[4] = { - [0] = MAX695X_DECODE_MODE_HEX_DECODE, - [1] = MAX695X_INTENSITY_MEDIUM, - [2] = MAX695X_SCAN_LIMIT_4, - [3] = MAX695X_CONFIG_OPR_NORMAL - }; - max695x_i2c_write(MAX695X_REG_DECODE_MODE, buf, ARRAY_SIZE(buf)); -} -DECLARE_HOOK(HOOK_INIT, max695x_init, HOOK_PRIO_DEFAULT); - -static void max695x_shutdown(void) -{ - max695x_i2c_write8(MAX695X_REG_CONFIG, - MAX695X_CONFIG_OPR_SHUTDOWN); -} -DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, max695x_shutdown, HOOK_PRIO_DEFAULT); - -#ifdef CONFIG_CMD_SEVEN_SEG_DISPLAY -static int console_command_max695x_write(int argc, char **argv) -{ - char *e; - int val; - - if (argc < 2) - return EC_ERROR_PARAM_COUNT; - - /* Get value to be written to the seven segment display*/ - val = strtoi(argv[1], &e, 0); - if (*e || val < 0 || val > UINT16_MAX) - return EC_ERROR_PARAM1; - - return display_7seg_write(SEVEN_SEG_CONSOLE_DISPLAY, val); -} -DECLARE_CONSOLE_COMMAND(seg, console_command_max695x_write, - "<val>", - "Write to 7 segment display in hex"); -#endif diff --git a/driver/led/max695x.h b/driver/led/max695x.h deleted file mode 100644 index 5ed5d91e2f..0000000000 --- a/driver/led/max695x.h +++ /dev/null @@ -1,44 +0,0 @@ -/* Copyright 2019 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. - * - * MAX6958/MAX6959 7-Segment LED Display Driver header - */ - -#ifndef __CROS_EC_MAX656X_H -#define __CROS_EC_MAX656X_H - -/* I2C interface */ -#define MAX695X_I2C_ADDR1_FLAGS 0x38 -#define MAX695X_I2C_ADDR2_FLAGS 0x39 - -/* Decode mode register */ -#define MAX695X_REG_DECODE_MODE 0x01 -/* Hexadecimal decode for digits 3–0 */ -#define MAX695X_DECODE_MODE_HEX_DECODE 0x0f - -/* Intensity register */ -#define MAX695X_REG_INTENSITY 0x02 -/* Setting meduim intensity */ -#define MAX695X_INTENSITY_MEDIUM 0x20 - -/* Scan limit register value */ -#define MAX695X_REG_SCAN_LIMIT 0x03 - -/* Scanning digits 0-3 */ -#define MAX695X_SCAN_LIMIT_4 0x03 - -/* Configuration register */ -#define MAX695X_REG_CONFIG 0x04 -/* Shutdown seven segment display */ -#define MAX695X_CONFIG_OPR_SHUTDOWN 0x00 -/* Start seven segment display */ -#define MAX695X_CONFIG_OPR_NORMAL 0x01 - -/* Digit addresses */ -#define MAX695X_DIGIT0_ADDR 0x20 -#define MAX695X_DIGIT1_ADDR 0x21 -#define MAX695X_DIGIT2_ADDR 0x22 -#define MAX695X_DIGIT3_ADDR 0x23 - -#endif /* __CROS_EC_MAX656X_H */ diff --git a/driver/led/oz554.c b/driver/led/oz554.c deleted file mode 100644 index 504ac55e90..0000000000 --- a/driver/led/oz554.c +++ /dev/null @@ -1,147 +0,0 @@ -/* Copyright 2018 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. - * - * O2 Micro OZ554 LED driver. - */ - -#include "console.h" -#include "gpio.h" -#include "hooks.h" -#include "i2c.h" -#include "oz554.h" -#include "task.h" -#include "timer.h" - -#define CPRINTS(format, args...) cprints(CC_I2C, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_I2C, format, ## args) - -#define I2C_ADDR_OZ554_FLAGS 0x31 - -struct oz554_value { - uint8_t offset; - uint8_t data; -}; - -/* - * OZ554ALN asserts the interrupt when it's ready for writing settings, which - * are cleared when it's turned off. We enable the interrupt on HOOK_INIT and - * keep it enabled in S0/S3/S5. - * - * It's assumed the device doesn't have a lid and OZ554ALN is powered only in - * S0. For clamshell devices, different interrupt & power control scheme may be - * needed. - */ - -/* This ordering is suggested by vendor. */ -static struct oz554_value oz554_conf[] = { - /* - * Reigster 0x01: Operation frequency control - * Frequency selection: 300(KHz) - * Short circuit protection: 8(V) - */ - {.offset = 1, .data = 0x43}, - /* - * Reigster 0x02: LED current amplitude control - * ISET Resistor: 10.2(Kohm) - * Maximum LED current: 1636/10.2 = 160.4(mA) - * Setting LED current: 65(mA) - */ - {.offset = 2, .data = 0x65}, - /* - * Reigster 0x03: LED backlight Status - * Status function: Read only - */ - {.offset = 3, .data = 0x00}, - /* - * Reigster 0x04: LED current control with SMBus - * SMBus PWM function: None Use - */ - {.offset = 4, .data = 0x00}, - /* - * Reigster 0x05: OVP, OCP control - * Over Current Protection: 0.5(V) - * Panel LED Voltage(Max): 47.8(V) - * OVP setting: 54(V) - */ - {.offset = 5, .data = 0x97}, - /* - * Reigster 0x00: Dimming mode and string ON/OFF control - * String Selection: 4(Number) - * Interface Selection: 1 - * Brightness mode: 3 - */ - {.offset = 0, .data = 0xF2}, -}; -static const int oz554_conf_size = ARRAY_SIZE(oz554_conf); - -static void set_oz554_reg(void) -{ - int i; - - for (i = 0; i < oz554_conf_size; ++i) { - int rv = i2c_write8(I2C_PORT_BACKLIGHT, - I2C_ADDR_OZ554_FLAGS, - oz554_conf[i].offset, oz554_conf[i].data); - if (rv) { - CPRINTS("Write OZ554 register %d failed rv=%d" , i, rv); - return; - } - } - CPRINTS("Wrote OZ554 settings"); -} - -static void backlight_enable_deferred(void) -{ - if (gpio_get_level(GPIO_PANEL_BACKLIGHT_EN)) - set_oz554_reg(); -} -DECLARE_DEFERRED(backlight_enable_deferred); - -void backlight_enable_interrupt(enum gpio_signal signal) -{ - /* - * 1. Spec says backlight should be turned on after 500ms - * after eDP signals are ready. - * - * 2. There's no way to get exact eDP ready time, therefore, - * give one second delay. - * - * power up __/---------------- - * eDP ______/------------ - * backlight _____________/----- - * |- t1 -| : >=500 ms - * |- t2 -| : 1 second is enough - */ - hook_call_deferred(&backlight_enable_deferred_data, - OZ554_POWER_BACKLIGHT_DELAY); -} - -int oz554_set_config(int offset, int data) -{ - int i; - for (i = 0; i < oz554_conf_size; i++) { - if (oz554_conf[i].offset == offset) - break; - } - if (i >= oz554_conf_size) { - /* Matching offset not found */ - CPRINTS("oz554: offset %d not found", i); - return EC_ERROR_INVAL; - } - oz554_conf[i].data = data; - return EC_SUCCESS; -} - -static void init_oz554(void) -{ - oz554_board_init(); - - gpio_enable_interrupt(GPIO_PANEL_BACKLIGHT_EN); -} -DECLARE_HOOK(HOOK_INIT, init_oz554, HOOK_PRIO_DEFAULT); - - -__overridable void oz554_board_init(void) -{ -} diff --git a/driver/led/oz554.h b/driver/led/oz554.h deleted file mode 100644 index d1d9d9656e..0000000000 --- a/driver/led/oz554.h +++ /dev/null @@ -1,35 +0,0 @@ -/* Copyright 2018 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. - * - * O2 Micro OZ554 LED driver. - */ - -#ifndef __CROS_EC_OZ554_H -#define __CROS_EC_OZ554_H - -#include "gpio.h" -#include "common.h" - -/* - * Overridable board initialization. Should be overridden by a board - * specific function if the default is not appropriate - */ -__override_proto void oz554_board_init(void); - -/** - * Update oz554 configuration array (oz554_conf). - * - * @param offset: Offset of the register to be set. - * @param data: Value to be set. - * @return EC_SUCCESS or EC_ERROR_* for errors. - */ -int oz554_set_config(int offset, int data); - -#ifndef OZ554_POWER_BACKLIGHT_DELAY -#define OZ554_POWER_BACKLIGHT_DELAY SECOND -#endif - -void backlight_enable_interrupt(enum gpio_signal signal); - -#endif |