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intelblocks/pep: Handle TBT displays on s0ix transition 

Notify IOM to enable or disable TBT displays on S0ix exit and entry
respectively.

Change-Id: I9f49d8e30fe8e8b335128e53d71ef902328f031a
Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63980
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Michał Kopeć 2022-05-02 10:24:41 +02:00 committed by Felix Held
parent 2b87b506bc
commit 86221c63ae
1 changed files with 12 additions and 0 deletions
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12
src/soc/intel/common/block/acpi/pep.c
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@ -17,6 +17,8 @@
#define MAINBOARD_DISPLAY_HOOK "\\_SB.MDSX"
#define ENABLE_PM_BITS_HOOK "\\_SB.PCI0.EGPM"
#define RESTORE_PM_BITS_HOOK "\\_SB.PCI0.RGPM"
#define THUNDERBOLT_DEVICE "\\_SB.PCI0.TXHC"
#define THUNDERBOLT_IOM_DPOF "\\_SB.PCI0.DPOF"
#define LPI_STATES_ALL 0xff
#define MIN_DEVICE_STATE ACPI_DEVICE_SLEEP_D0
#define PEPD_SCOPE "\\_SB.PCI0"
@ -129,6 +131,11 @@ static void lpi_s0ix_entry(void *unused)
acpigen_write_if_cond_ref_of(ENABLE_PM_BITS_HOOK);
acpigen_emit_namestring(ENABLE_PM_BITS_HOOK);
acpigen_write_if_end();
/* Handle Thunderbolt displays */
acpigen_write_if_cond_ref_of(THUNDERBOLT_DEVICE);
acpigen_write_store_int_to_namestr(1, THUNDERBOLT_IOM_DPOF);
acpigen_write_if_end();
}
static void lpi_s0ix_exit(void *unused)
@ -149,6 +156,11 @@ static void lpi_s0ix_exit(void *unused)
acpigen_write_if_cond_ref_of(RESTORE_PM_BITS_HOOK);
acpigen_emit_namestring(RESTORE_PM_BITS_HOOK);
acpigen_write_if_end();
/* Handle Thunderbolt displays */
acpigen_write_if_cond_ref_of(THUNDERBOLT_DEVICE);
acpigen_write_store_int_to_namestr(0, THUNDERBOLT_IOM_DPOF);
acpigen_write_if_end();
}
static void lpi_display_on(void *unused)