diff options
Diffstat (limited to 'src/soc/intel/icelake/gpio.c')
| -rw-r--r-- | src/soc/intel/icelake/gpio.c | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/src/soc/intel/icelake/gpio.c b/src/soc/intel/icelake/gpio.c index b244437503..53620054ce 100644 --- a/src/soc/intel/icelake/gpio.c +++ b/src/soc/intel/icelake/gpio.c @@ -32,34 +32,48 @@ static const struct reset_mapping rst_map_com0[] = { { .logical = PAD_CFG0_LOGICAL_RESET_RSMRST, .chipset = 3U << 30 }, }; +/* + * The GPIO driver for Icelake on Windows/Linux expects 32 GPIOs per pad + * group, regardless of whether or not there is a physical pad for each + * exposed GPIO number. + * + * This results in the OS having a sparse GPIO map, and devices that need + * to export an ACPI GPIO must use the OS expected number. + * + * Not all pins are usable as GPIO and those groups do not have a pad base. + * + * This layout matches the Linux kernel pinctrl map for CNL-LP at: + * linux/drivers/pinctrl/intel/pinctrl-icelake.c + */ static const struct pad_group icl_community0_groups[] = { - INTEL_GPP(GPP_G0, GPP_G0, GPP_G7), /* GPP_G */ - INTEL_GPP(GPP_G0, GPP_B0, GPP_B23), /* GPP_B */ + INTEL_GPP_BASE(GPP_G0, GPP_G0, GPP_G7, 0), /* GPP_G */ + INTEL_GPP_BASE(GPP_G0, GPP_B0, GPP_B23, 32), /* GPP_B */ INTEL_GPP(GPP_G0, GPIO_RSVD_0, GPIO_RSVD_1), - INTEL_GPP(GPP_G0, GPP_A0, GPP_A23), /* GPP_A */ + INTEL_GPP_BASE(GPP_G0, GPP_A0, GPP_A23, 64), /* GPP_A */ }; static const struct pad_group icl_community1_groups[] = { - INTEL_GPP(GPP_H0, GPP_H0, GPP_H23), /* GPP_H */ - INTEL_GPP(GPP_H0, GPP_D0, GPIO_RSVD_2), /* GPP_D */ - INTEL_GPP(GPP_H0, GPP_F0, GPP_F19), /* GPP_F */ + INTEL_GPP_BASE(GPP_H0, GPP_H0, GPP_H23, 96), /* GPP_H */ + INTEL_GPP_BASE(GPP_H0, GPP_D0, GPIO_RSVD_2, 128), /* GPP_D */ + INTEL_GPP_BASE(GPP_H0, GPP_F0, GPP_F19, 160), /* GPP_F */ }; +/* This community is not visible to the OS */ static const struct pad_group icl_community2_groups[] = { INTEL_GPP(GPD0, GPD0, GPD11), /* GPD */ }; static const struct pad_group icl_community4_groups[] = { - INTEL_GPP(GPP_C0, GPP_C0, GPP_C23), /* GPP_C */ - INTEL_GPP(GPP_C0, GPP_E0, GPP_E23), /* GPP_E */ + INTEL_GPP_BASE(GPP_C0, GPP_C0, GPP_C23, 224), /* GPP_C */ + INTEL_GPP_BASE(GPP_C0, GPP_E0, GPP_E23, 256), /* GPP_E */ INTEL_GPP(GPP_C0, GPIO_RSVD_3, GPIO_RSVD_8), }; static const struct pad_group icl_community5_groups[] = { - INTEL_GPP(GPP_R0, GPP_R0, GPP_R7), /* GPP_R */ - INTEL_GPP(GPP_C0, GPP_S0, GPP_S7), /* GPP_S */ + INTEL_GPP_BASE(GPP_R0, GPP_R0, GPP_R7, 288), /* GPP_R */ + INTEL_GPP_BASE(GPP_C0, GPP_S0, GPP_S7, 320), /* GPP_S */ }; static const struct pad_community icl_communities[] = { |