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ec/google/chromeec: Fill up SSDT for EC provided PS2 keyboard 

Query the EC to get the top row layout, and if it provides one,
generate the SSDT for the PS2 keyboard.

Signed-off-by: Rajat Jain <rajatja@google.com>
Change-Id: I75d2eee32c82b9bee73436b08b5f615d1b388148
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40032
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Rajat Jain 2020-04-01 17:24:28 -07:00 committed by Furquan Shaikh
parent 89eef55718
commit 962c788861
1 changed files with 57 additions and 8 deletions
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65
src/ec/google/chromeec/ec_acpi.c
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@ -8,6 +8,7 @@
#include <arch/acpi.h>
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <arch/acpigen_ps2_keybd.h>
#include <console/console.h>
#include <drivers/usb/acpi/chip.h>
#include <stdlib.h>
@ -178,14 +179,19 @@ static void add_usb_port_references(struct acpi_dp *dsd, int port_number)
}
}
static void fill_ssdt_typec_device(int num_ports)
static void fill_ssdt_typec_device(struct device *dev)
{
struct usb_pd_port_caps port_caps;
char con_name[] = "CONx";
struct acpi_dp *dsd;
int rv;
int i;
int i, num_ports;
if (google_chromeec_get_num_pd_ports(&num_ports))
return;
/* Add TypeC device under the existing device + ".CREC" scope */
acpigen_write_scope(acpi_device_path_join(dev, GOOGLE_CHROMEEC_USBC_DEVICE_PARENT));
acpigen_write_device(GOOGLE_CHROMEEC_USBC_DEVICE_NAME);
acpigen_write_name_string("_HID", GOOGLE_CHROMEEC_USBC_DEVICE_HID);
acpigen_write_name_string("_DDN", "ChromeOS EC Embedded Controller "
@ -212,16 +218,59 @@ static void fill_ssdt_typec_device(int num_ports)
}
acpigen_pop_len(); /* Device GOOGLE_CHROMEEC_USBC_DEVICE_NAME */
acpigen_pop_len(); /* Scope */
}
static const enum ps2_action_key ps2_enum_val[] = {
[TK_ABSENT] = PS2_KEY_ABSENT,
[TK_BACK] = PS2_KEY_BACK,
[TK_FORWARD] = PS2_KEY_FORWARD,
[TK_REFRESH] = PS2_KEY_REFRESH,
[TK_FULLSCREEN] = PS2_KEY_FULLSCREEN,
[TK_OVERVIEW] = PS2_KEY_OVERVIEW,
[TK_BRIGHTNESS_DOWN] = PS2_KEY_BRIGHTNESS_DOWN,
[TK_BRIGHTNESS_UP] = PS2_KEY_BRIGHTNESS_UP,
[TK_VOL_MUTE] = PS2_KEY_VOL_MUTE,
[TK_VOL_DOWN] = PS2_KEY_VOL_DOWN,
[TK_VOL_UP] = PS2_KEY_VOL_UP,
[TK_SNAPSHOT] = PS2_KEY_SNAPSHOT,
[TK_PRIVACY_SCRN_TOGGLE] = PS2_KEY_PRIVACY_SCRN_TOGGLE,
[TK_KBD_BKLIGHT_DOWN] = PS2_KEY_KBD_BKLIGHT_DOWN,
[TK_KBD_BKLIGHT_UP] = PS2_KEY_KBD_BKLIGHT_UP,
[TK_PLAY_PAUSE] = PS2_KEY_PLAY_PAUSE,
[TK_NEXT_TRACK] = PS2_KEY_NEXT_TRACK,
[TK_PREV_TRACK] = PS2_KEY_PREV_TRACK,
};
static void fill_ssdt_ps2_keyboard(struct device *dev)
{
uint8_t i;
struct ec_response_keybd_config keybd = {};
enum ps2_action_key ps2_action_keys[MAX_TOP_ROW_KEYS] = {};
if (google_chromeec_get_keybd_config(&keybd) ||
!keybd.num_top_row_keys ||
keybd.num_top_row_keys > MAX_TOP_ROW_KEYS) {
printk(BIOS_ERR, "PS2K: Bad resp from EC. Vivaldi disabled!\n");
return;
}
/* Convert enum action_key values to enum ps2_action_key values */
for (i = 0; i < keybd.num_top_row_keys; i++)
ps2_action_keys[i] = ps2_enum_val[keybd.action_keys[i]];
acpigen_ps2_keyboard_dsd("_SB.PCI0.PS2K", keybd.num_top_row_keys,
ps2_action_keys,
!!(keybd.capabilities & KEYBD_CAP_FUNCTION_KEYS),
!!(keybd.capabilities & KEYBD_CAP_NUMERIC_KEYPAD),
!!(keybd.capabilities & KEYBD_CAP_SCRNLOCK_KEY));
}
void google_chromeec_fill_ssdt_generator(struct device *dev)
{
int num_ports;
if (google_chromeec_get_num_pd_ports(&num_ports))
if (!dev->enabled)
return;
/* Add TypeC device under the existing device + ".CREC" scope */
acpigen_write_scope(acpi_device_path_join(dev, GOOGLE_CHROMEEC_USBC_DEVICE_PARENT));
fill_ssdt_typec_device(num_ports);
acpigen_pop_len(); /* Scope */
fill_ssdt_typec_device(dev);
fill_ssdt_ps2_keyboard(dev);
}