diff options
| author | Duncan Laurie <dlaurie@chromium.org> | 2017-05-26 15:47:57 -0700 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2017-05-31 01:26:19 +0200 |
| commit | f124b88cfbc990be0c34b0edc82b7ba870828f2e (patch) | |
| tree | 6334df3378056ee91088fb1d5fe998970ed308cd /src | |
| parent | cd6b22f9a02a7e21b39cc8a68d7ceb2f90a0815b (diff) | |
mb/google/eve: Add power controls to touchscreen device
Instead of having the SMI handler power off the touchscreen on the
way into suspend add power resource controls to the ACPI device so
the power is managed by the kernel instead of the BIOS.
BUG=b:35581264
TEST=manual testing on Eve to ensure that the touchscreen is still
functional at boot and after suspend/resume, and that it does not
draw power in suspend.
Change-Id: Id9a98807d24bbc7dff32408f3d113f6fad5bc023
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/19946
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/eve/devicetree.cb | 4 | ||||
| -rw-r--r-- | src/mainboard/google/eve/gpio.h | 3 | ||||
| -rw-r--r-- | src/mainboard/google/eve/smihandler.c | 1 |
3 files changed, 5 insertions, 3 deletions
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb index 487dda3f35..e255a7aa6d 100644 --- a/src/mainboard/google/eve/devicetree.cb +++ b/src/mainboard/google/eve/devicetree.cb @@ -233,6 +233,10 @@ chip soc/intel/skylake register "generic.desc" = ""WCOM Digitizer"" register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_E7_IRQ)" register "generic.speed" = "I2C_SPEED_FAST_PLUS" + register "generic.has_power_resource" = "1" + register "generic.disable_gpio_export_in_crs" = "1" + register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C22)" + register "generic.enable_delay_ms" = "250" register "hid_desc_reg_offset" = "0x1" device i2c 0a on end end diff --git a/src/mainboard/google/eve/gpio.h b/src/mainboard/google/eve/gpio.h index b5c2694ccd..f174d9caf0 100644 --- a/src/mainboard/google/eve/gpio.h +++ b/src/mainboard/google/eve/gpio.h @@ -38,7 +38,6 @@ #define EC_SCI_GPI GPE0_ESPI /* Power rail control signals */ -#define EN_PP3300_DX_TOUCH GPP_C22 #define EN_PP3300_DX_CAM GPP_D12 #ifndef __ACPI__ @@ -117,7 +116,7 @@ static const struct pad_config gpio_table[] = { /* I2C1_SCL */ PAD_CFG_NF(GPP_C19, NONE, DEEP, NF1), /* TPM */ /* UART2_RXD */ PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* SERVO */ /* UART2_TXD */ PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), /* SERVO */ -/* UART2_RTS# */ PAD_CFG_GPO(GPP_C22, 1, DEEP), /* EN_PP3300_DX_TOUCHSCREEN */ +/* UART2_RTS# */ PAD_CFG_GPO(GPP_C22, 0, DEEP), /* EN_PP3300_DX_TOUCHSCREEN */ /* UART2_CTS# */ PAD_CFG_GPI(GPP_C23, 20K_PU, DEEP), /* PCH_WP */ /* SPI1_CS# */ PAD_CFG_GPO(GPP_D0, 0, DEEP), /* TOUCHPAD_BOOT */ diff --git a/src/mainboard/google/eve/smihandler.c b/src/mainboard/google/eve/smihandler.c index 879131c220..493a3349e5 100644 --- a/src/mainboard/google/eve/smihandler.c +++ b/src/mainboard/google/eve/smihandler.c @@ -29,7 +29,6 @@ void mainboard_smi_espi_handler(void) static void mainboard_gpio_smi_sleep(u8 slp_typ) { /* Power down the rails on any sleep type */ - gpio_set(EN_PP3300_DX_TOUCH, 0); gpio_set(EN_PP3300_DX_CAM, 0); } |