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mb/google/hatch: Enable touch panel support 

Following changes are done to enable touch screen support on hatch
1. Enable I2C1 device at 400Khz at 3.3V
2. Configure GPIO for touch screen
3. Add ACPI entry for ELAN touch panel
4. update GPIO table with not connected GPIO pins for panel

BUG=b:120914069
BRANCH=none
TEST=check if code compiles with changes.

Change-Id: I8dab07dad4cb197865bb9cf0e8da240810fcfabe
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/30425
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
This commit is contained in:
Maulik V Vaghela 2018-12-25 15:01:06 +05:30 committed by Patrick Georgi
parent b544c00056
commit b6fe048910
2 changed files with 31 additions and 3 deletions
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20
src/mainboard/google/hatch/variants/baseboard/devicetree.cb
View File

@ -25,6 +25,7 @@ chip soc/intel/cannonlake
#| | for TPM communication |
#| | before memory is up |
#| I2C0 | Touchpad |
#| I2C1 | Touch screen |
#+-------------------+---------------------------+
register "common_soc_config" = "{
.gspi[0] = {
@ -34,6 +35,9 @@ chip soc/intel/cannonlake
.i2c[0] = {
.speed = I2C_SPEED_FAST,
},
.i2c[1] = {
.speed = I2C_SPEED_FAST,
},
}"
# FSP configuration
@ -167,7 +171,21 @@ chip soc/intel/cannonlake
device i2c 15 on end
end
end # I2C #0
device pci 15.1 off end # I2C #1
device pci 15.1 on
chip drivers/i2c/generic
register "hid" = ""ELAN0001""
register "desc" = ""ELAN Touchscreen""
register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_D16_IRQ)"
register "probed" = "1"
register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D15)"
register "reset_delay_ms" = "100"
register "reset_off_delay_ms" = "5"
register "has_power_resource" = "1"
register "stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C4)"
register "stop_off_delay_ms" = "5"
device i2c 49 on end
end
end # I2C #1
device pci 15.2 off end # I2C #2
device pci 15.3 off end # I2C #3
device pci 16.0 on end # Management Engine Interface 1

14
src/mainboard/google/hatch/variants/baseboard/gpio.c
View File

@ -31,6 +31,8 @@ static const struct pad_config gpio_table[] = {
PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1),
/* H1_SLAVE_SPI_MOSI_R */
PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1),
/* TOUCHSCREEN_DIS_L */
PAD_CFG_GPO(GPP_C4, 0, DEEP),
/* GPP_C11_TP => NC */
PAD_NC(GPP_C11, DN_20K),
/* GPP_C10_TP => NC */
@ -39,12 +41,20 @@ static const struct pad_config gpio_table[] = {
PAD_CFG_NF(GPP_C16, NONE, DEEP, NF1),
/* PCH_I2C_TRACKPAD_SCL */
PAD_CFG_NF(GPP_C17, NONE, DEEP, NF1),
/* H1_PCH_INT_ODL */
PAD_CFG_GPI_APIC(GPP_C21, NONE, DEEP, LEVEL, INVERT),
/* PCH_I2C_TOUCHSCREEN_SDA */
PAD_CFG_NF(GPP_C18, NONE, DEEP, NF1),
/* PCH_I2C_TOUCHSCREEN_SCL */
PAD_CFG_NF(GPP_C19, NONE, DEEP, NF1),
/* PCH_WP_OD */
PAD_CFG_GPI(GPP_C20, NONE, DEEP),
/* H1_PCH_INT_ODL */
PAD_CFG_GPI_APIC(GPP_C21, NONE, DEEP, LEVEL, INVERT),
/* EC_IN_RW_OD */
PAD_CFG_GPI(GPP_C22, NONE, DEEP),
/* TOUCHSCREEN_RST_L */
PAD_CFG_GPO(GPP_D15, 0, DEEP),
/* TOUCHSCREEN_INT_L */
PAD_CFG_GPI_APIC(GPP_D16, NONE, DEEP, LEVEL, INVERT),
/* SATAGP1 */
PAD_CFG_NF(GPP_E1, NONE, DEEP, NF2),
/* M2_SSD_PE_WAKE_ODL */