diff options
Diffstat (limited to 'src/soc/intel/elkhartlake/gpio.c')
| -rw-r--r-- | src/soc/intel/elkhartlake/gpio.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/soc/intel/elkhartlake/gpio.c b/src/soc/intel/elkhartlake/gpio.c new file mode 100644 index 0000000000..9ba5d8e058 --- /dev/null +++ b/src/soc/intel/elkhartlake/gpio.c @@ -0,0 +1,198 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <intelblocks/gpio.h> +#include <intelblocks/pcr.h> +#include <soc/pcr_ids.h> +#include <soc/pmc.h> + +static const struct reset_mapping rst_map[] = { + { .logical = PAD_CFG0_LOGICAL_RESET_RSMRST, .chipset = 0U << 30 }, + { .logical = PAD_CFG0_LOGICAL_RESET_DEEP, .chipset = 1U << 30 }, + { .logical = PAD_CFG0_LOGICAL_RESET_PLTRST, .chipset = 2U << 30 }, +}; + +static const struct reset_mapping rst_map_com0[] = { + { .logical = PAD_CFG0_LOGICAL_RESET_PWROK, .chipset = 0U << 30 }, + { .logical = PAD_CFG0_LOGICAL_RESET_DEEP, .chipset = 1U << 30 }, + { .logical = PAD_CFG0_LOGICAL_RESET_PLTRST, .chipset = 2U << 30 }, + { .logical = PAD_CFG0_LOGICAL_RESET_RSMRST, .chipset = 3U << 30 }, +}; + +/* + * The GPIO driver for Elkhartlake 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 MCC at: + * linux/drivers/pinctrl/intel/pinctrl-elkhartlake.c + */ +static const struct pad_group ehl_community0_groups[] = { + + INTEL_GPP_BASE(GPP_F0, GPP_F0, GPP_F19, 0), /* GPP_F */ + INTEL_GPP(GPP_F0, GPIO_RSVD_0, GPIO_RSVD_8), + INTEL_GPP_BASE(GPP_F0, GPP_B0, GPP_B23, 32), /* GPP_B */ + INTEL_GPP(GPP_F0, GPIO_RSVD_9, GPIO_RSVD_10), + INTEL_GPP_BASE(GPP_F0, GPP_A0, GPIO_RSVD_11, 64), /* GPP_A */ + INTEL_GPP_BASE(GPP_F0, GPP_S0, GPP_S7, 96), /* GPP_S */ + INTEL_GPP_BASE(GPP_F0, GPP_R0, GPP_R7, 128), /* GPP_R */ +}; + +static const struct pad_group ehl_community1_groups[] = { + INTEL_GPP_BASE(GPP_H0, GPP_H0, GPP_H23, 160), /* GPP_H */ + INTEL_GPP_BASE(GPP_H0, GPP_D0, GPP_D23, 192), /* GPP_D */ + INTEL_GPP(GPP_H0, GPIO_RSVD_12, GPIO_RSVD_13), + INTEL_GPP_BASE(GPP_H0, VGPIO_0, VGPIO_39, 224), /* VGPIO */ + INTEL_GPP_BASE(GPP_H0, GPP_C0, GPP_C23, 256), /* GPP_C */ +}; + +/* This community is not visible to the OS */ +static const struct pad_group ehl_community2_groups[] = { + INTEL_GPP(GPD0, GPD0, GPD10), /* GPD */ + INTEL_GPP(GPD0, GPIO_RSVD_14, GPIO_RSVD_17), +}; + + +static const struct pad_group ehl_community4_groups[] = { + INTEL_GPP(GPIO_RSVD_18, GPIO_RSVD_18, GPIO_RSVD_23), + INTEL_GPP_BASE(GPIO_RSVD_18, GPP_E0, GPP_E23, 288), /* GPP_E */ + INTEL_GPP(GPIO_RSVD_18, GPIO_RSVD_24, GPIO_RSVD_36), +}; + + +static const struct pad_group ehl_community5_groups[] = { + INTEL_GPP_BASE(GPP_G0, GPP_G0, GPP_G7, 320), /* GPP_G */ +}; + +static const struct pad_community ehl_communities[TOTAL_GPIO_COMM] = { + /* GPP F, B, A, S, R */ + [COMM_0] = { + .port = PID_GPIOCOM0, + .first_pad = GPP_F0, + .last_pad = GPP_R7, + .num_gpi_regs = NUM_GPIO_COM0_GPI_REGS, + .pad_cfg_base = PAD_CFG_BASE, + .host_own_reg_0 = HOSTSW_OWN_REG_0, + .gpi_int_sts_reg_0 = GPI_INT_STS_0, + .gpi_int_en_reg_0 = GPI_INT_EN_0, + .gpi_smi_sts_reg_0 = GPI_SMI_STS_0, + .gpi_smi_en_reg_0 = GPI_SMI_EN_0, + .max_pads_per_group = GPIO_MAX_NUM_PER_GROUP, + .name = "GPP_FBASR", + .acpi_path = "\\_SB.PCI0.GPIO", + .reset_map = rst_map_com0, + .num_reset_vals = ARRAY_SIZE(rst_map_com0), + .groups = ehl_community0_groups, + .num_groups = ARRAY_SIZE(ehl_community0_groups), + }, + /* GPP H, D, VGPIO, C */ + [COMM_1] = { + .port = PID_GPIOCOM1, + .first_pad = GPP_H0, + .last_pad = GPP_C23, + .num_gpi_regs = NUM_GPIO_COM1_GPI_REGS, + .pad_cfg_base = PAD_CFG_BASE, + .host_own_reg_0 = HOSTSW_OWN_REG_0, + .gpi_int_sts_reg_0 = GPI_INT_STS_0, + .gpi_int_en_reg_0 = GPI_INT_EN_0, + .gpi_smi_sts_reg_0 = GPI_SMI_STS_0, + .gpi_smi_en_reg_0 = GPI_SMI_EN_0, + .max_pads_per_group = GPIO_MAX_NUM_PER_GROUP, + .name = "GPP_HDC", + .acpi_path = "\\_SB.PCI0.GPIO", + .reset_map = rst_map, + .num_reset_vals = ARRAY_SIZE(rst_map), + .groups = ehl_community1_groups, + .num_groups = ARRAY_SIZE(ehl_community1_groups), + }, + /* GPD */ + [COMM_2] = { + .port = PID_GPIOCOM2, + .first_pad = GPD0, + .last_pad = GPIO_RSVD_17, + .num_gpi_regs = NUM_GPIO_COM2_GPI_REGS, + .pad_cfg_base = PAD_CFG_BASE, + .host_own_reg_0 = HOSTSW_OWN_REG_0, + .gpi_int_sts_reg_0 = GPI_INT_STS_0, + .gpi_int_en_reg_0 = GPI_INT_EN_0, + .gpi_smi_sts_reg_0 = GPI_SMI_STS_0, + .gpi_smi_en_reg_0 = GPI_SMI_EN_0, + .max_pads_per_group = GPIO_MAX_NUM_PER_GROUP, + .name = "GPD", + .acpi_path = "\\_SB.PCI0.GPIO", + .reset_map = rst_map, + .num_reset_vals = ARRAY_SIZE(rst_map), + .groups = ehl_community2_groups, + .num_groups = ARRAY_SIZE(ehl_community2_groups), + }, + /* GPP E */ + [COMM_4] = { + .port = PID_GPIOCOM4, + .first_pad = GPIO_RSVD_18, + .last_pad = GPIO_RSVD_36, + .num_gpi_regs = NUM_GPIO_COM4_GPI_REGS, + .pad_cfg_base = PAD_CFG_BASE, + .host_own_reg_0 = HOSTSW_OWN_REG_0, + .gpi_int_sts_reg_0 = GPI_INT_STS_0, + .gpi_int_en_reg_0 = GPI_INT_EN_0, + .gpi_smi_sts_reg_0 = GPI_SMI_STS_0, + .gpi_smi_en_reg_0 = GPI_SMI_EN_0, + .max_pads_per_group = GPIO_MAX_NUM_PER_GROUP, + .name = "GPP_E", + .acpi_path = "\\_SB.PCI0.GPIO", + .reset_map = rst_map, + .num_reset_vals = ARRAY_SIZE(rst_map), + .groups = ehl_community4_groups, + .num_groups = ARRAY_SIZE(ehl_community4_groups), + }, + /* GPP G */ + [COMM_5] = { + .port = PID_GPIOCOM5, + .first_pad = GPP_G0, + .last_pad = GPP_G7, + .num_gpi_regs = NUM_GPIO_COM5_GPI_REGS, + .pad_cfg_base = PAD_CFG_BASE, + .host_own_reg_0 = HOSTSW_OWN_REG_0, + .gpi_int_sts_reg_0 = GPI_INT_STS_0, + .gpi_int_en_reg_0 = GPI_INT_EN_0, + .gpi_smi_sts_reg_0 = GPI_SMI_STS_0, + .gpi_smi_en_reg_0 = GPI_SMI_EN_0, + .max_pads_per_group = GPIO_MAX_NUM_PER_GROUP, + .name = "GPP_G", + .acpi_path = "\\_SB.PCI0.GPIO", + .reset_map = rst_map, + .num_reset_vals = ARRAY_SIZE(rst_map), + .groups = ehl_community5_groups, + .num_groups = ARRAY_SIZE(ehl_community5_groups), + } +}; + +const struct pad_community *soc_gpio_get_community(size_t *num_communities) +{ + *num_communities = ARRAY_SIZE(ehl_communities); + return ehl_communities; +} + +const struct pmc_to_gpio_route *soc_pmc_gpio_routes(size_t *num) +{ + static const struct pmc_to_gpio_route routes[] = { + { PMC_GPP_A, GPP_A }, + { PMC_GPP_B, GPP_B }, + { PMC_GPP_G, GPP_G }, + { PMC_GPP_C, GPP_C }, + { PMC_GPP_R, GPP_R }, + { PMC_GPP_D, GPP_D }, + { PMC_GPP_S, GPP_S }, + { PMC_GPP_H, GPP_H }, + { PMC_GPP_F, GPP_F }, + { PMC_GPD, GPP_GPD }, + { PMC_GPP_E, GPP_E } + }; + + *num = ARRAY_SIZE(routes); + return routes; +} |