diff options
| author | Jeremy Soller <jeremy@system76.com> | 2020-07-20 15:18:29 -0600 |
|---|---|---|
| committer | Michael Niewöhner <c0d3z3r0@review.coreboot.org> | 2020-09-06 16:37:03 +0000 |
| commit | 2d28c4cff4de4ae286918e78204d43340f764ea4 (patch) | |
| tree | 93d2f67c10b259b2c145b589ad75341ce48df3b5 /src | |
| parent | e83d30bb5a240757b2e0a712e012c9fe6ab44f95 (diff) | |
mb/system76/lemp9: enable I2C HID touchpad
Enable the I2C HID driver, configure I2C bus 0 and add the touchpad
device to the devicetree.
Tested on lemp9, touchpad confirmed to use i2c-hid driver in Linux
instead of PS/2.
Signed-off-by: Jeremy Soller <jeremy@system76.com>
Change-Id: Ic3a90fda134b1d53f28ab687b3033ec52fee843b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43623
Reviewed-by: Michael Niewöhner
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/system76/lemp9/Kconfig | 1 | ||||
| -rw-r--r-- | src/mainboard/system76/lemp9/devicetree.cb | 23 | ||||
| -rw-r--r-- | src/mainboard/system76/lemp9/gpio.h | 4 |
3 files changed, 24 insertions, 4 deletions
diff --git a/src/mainboard/system76/lemp9/Kconfig b/src/mainboard/system76/lemp9/Kconfig index 6f2bee76b1..6b5b75012c 100644 --- a/src/mainboard/system76/lemp9/Kconfig +++ b/src/mainboard/system76/lemp9/Kconfig @@ -3,6 +3,7 @@ if BOARD_SYSTEM76_LEMP9 config BOARD_SPECIFIC_OPTIONS def_bool y select BOARD_ROMSIZE_KB_16384 + select DRIVERS_I2C_HID select EC_SYSTEM76_EC select HAVE_ACPI_RESUME select HAVE_ACPI_TABLES diff --git a/src/mainboard/system76/lemp9/devicetree.cb b/src/mainboard/system76/lemp9/devicetree.cb index e0da72a96e..6adc1885a4 100644 --- a/src/mainboard/system76/lemp9/devicetree.cb +++ b/src/mainboard/system76/lemp9/devicetree.cb @@ -1,7 +1,12 @@ chip soc/intel/cannonlake - # Lock Down register "common_soc_config" = "{ .chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT, + /* Touchpad */ + .i2c[0] = { + .speed = I2C_SPEED_FAST, + .rise_time_ns = 80, + .fall_time_ns = 110, + }, }" # Send an extra VR mailbox command for the PS4 exit issue @@ -35,6 +40,11 @@ chip soc/intel/cannonlake #register "enable_c6dram" = "1" # FSP Silicon (soc/intel/cannonlake/fsp_params.c) + # Serial I/O + register "SerialIoDevMode" = "{ + [PchSerialIoIndexI2C0] = PchSerialIoPci, // Touchpad + }" + # SATA register "SataMode" = "Sata_AHCI" register "SataSalpSupport" = "0" @@ -185,7 +195,16 @@ chip soc/intel/cannonlake device pci 14.3 on end end device pci 14.5 off end # SDCard - device pci 15.0 off end # I2C #0 + device pci 15.0 on + chip drivers/i2c/hid + register "generic.hid" = ""ELAN040D"" + register "generic.desc" = ""ELAN Touchpad"" + register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_B3_IRQ)" + register "generic.probed" = "1" + register "hid_desc_reg_offset" = "0x01" + device i2c 15 on end + end + end # I2C #0 device pci 15.1 off end # I2C #1 device pci 15.2 off end # I2C #2 device pci 15.3 off end # I2C #3 diff --git a/src/mainboard/system76/lemp9/gpio.h b/src/mainboard/system76/lemp9/gpio.h index 9c99f13b64..3373c6c0b1 100644 --- a/src/mainboard/system76/lemp9/gpio.h +++ b/src/mainboard/system76/lemp9/gpio.h @@ -138,8 +138,8 @@ static const struct pad_config gpio_table[] = { PAD_NC(GPP_B2, UP_20K), // CPU Misc - // GPP_B3 - _PAD_CFG_STRUCT(GPP_B3, 0x80100100, 0x0000), + // GPP_B3 (touchpad interrupt) + PAD_CFG_GPI_APIC_EDGE_LOW(GPP_B3, NONE, PLTRST), // NC PAD_NC(GPP_B4, UP_20K), |