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Add fan power enable GPIO for Peppy

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BUG=chrome-os-partner:21847
BRANCH=peppy
TEST=Manual. Check state of GPIO_P5000_FAN_EN with lid open
and lid closed. Can also check with meter via TP109.

Change-Id: I8a64c14d53dd84a5d586c0abb04ccb71de0e78b3
Signed-off-by: Dave Parker <dparker@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/65674
This commit is contained in:
Dave Parker
2013-08-12 19:54:24 -07:00
committed by ChromeBot
parent 2de1f07579
commit 39421848c6
4 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
board/peppy/board.c
View File

@@ -75,13 +75,13 @@ const struct gpio_info gpio_list[] = {
/* Outputs; all unasserted by default except for reset signals */
{"CPU_PROCHOT", LM4_GPIO_B, (1<<1), GPIO_OUT_LOW, NULL},
{"PP1350_EN", LM4_GPIO_H, (1<<5), GPIO_OUT_LOW, NULL},
{"PP3300_DSW_GATED_EN", LM4_GPIO_J, (1<<3), GPIO_OUT_LOW, NULL},
{"PP3300_DX_EN", LM4_GPIO_J, (1<<2), GPIO_OUT_LOW, NULL},
{"PP3300_LTE_EN", LM4_GPIO_D, (1<<2), GPIO_OUT_LOW, NULL},
{"PP3300_WLAN_EN", LM4_GPIO_J, (1<<0), GPIO_OUT_LOW, NULL},
{"SUSP_VR_EN", LM4_GPIO_C, (1<<7), GPIO_OUT_LOW, NULL},
{"VCORE_EN", LM4_GPIO_C, (1<<5), GPIO_OUT_LOW, NULL},
{"PP5000_EN", LM4_GPIO_H, (1<<7), GPIO_OUT_LOW, NULL},
{"PP5000_FAN_EN", LM4_GPIO_J, (1<<3), GPIO_OUT_LOW, NULL},
{"SYS_PWROK", LM4_GPIO_H, (1<<2), GPIO_OUT_LOW, NULL},
{"WLAN_OFF_L", LM4_GPIO_J, (1<<4), GPIO_OUT_LOW, NULL},
{"CHARGE_L", LM4_GPIO_E, (1<<6), GPIO_OUT_LOW, NULL},

3
board/peppy/board.h
View File

@@ -24,6 +24,7 @@
#define CONFIG_POWER_BUTTON
#define CONFIG_POWER_BUTTON_X86
#define CONFIG_PWM_FAN
#define CONFIG_PWM_FAN_EN_GPIO GPIO_PP5000_FAN_EN
#define CONFIG_TEMP_SENSOR
#define CONFIG_TEMP_SENSOR_G781
#define CONFIG_UART_HOST 2
@@ -96,13 +97,13 @@ enum gpio_signal {
/* Outputs */
GPIO_CPU_PROCHOT, /* Force CPU to think it's overheated */
GPIO_PP1350_EN, /* Enable 1.35V supply */
GPIO_PP3300_DSW_GATED_EN, /* Enable DSW rails */
GPIO_PP3300_DX_EN, /* Enable power to lots of peripherals */
GPIO_PP3300_LTE_EN, /* Enable LTE radio */
GPIO_PP3300_WLAN_EN, /* Enable WiFi power */
GPIO_SUSP_VR_EN, /* Enable 1.05V regulator */
GPIO_VCORE_EN, /* Stuffing option - not connected */
GPIO_PP5000_EN, /* Enable 5V supply */
GPIO_PP5000_FAN_EN, /* Enable fan power rail */
GPIO_SYS_PWROK, /* EC thinks everything is up and ready */
GPIO_WLAN_OFF_L, /* Disable WiFi radio */
GPIO_CHARGE_L, /* Allow battery to charge when on AC */

4
chip/lm4/pwm_fan.c
View File

@@ -48,6 +48,10 @@ void pwm_enable_fan(int enable)
LM4_FAN_FANCTL |= (1 << FAN_CH_CPU);
else
LM4_FAN_FANCTL &= ~(1 << FAN_CH_CPU);
#ifdef CONFIG_PWM_FAN_EN_GPIO
gpio_set_level(CONFIG_PWM_FAN_EN_GPIO, enable);
#endif /* CONFIG_PWM_FAN_EN_GPIO */
}
int pwm_get_fan_enabled(void)

3
include/config.h
View File

@@ -465,6 +465,9 @@
/* Compile support for PWM control of cooling fans */
#undef CONFIG_PWM_FAN
/* Name of active high GPIO to control power to the cooling fan */
#undef CONFIG_PWM_FAN_EN_GPIO
/* Compile support for PWM output to keyboard backlight */
#undef CONFIG_PWM_KBLIGHT