diff options
Diffstat (limited to 'src/soc/intel/common/block/gpio/gpio.c')
| -rw-r--r-- | src/soc/intel/common/block/gpio/gpio.c | 66 |
1 files changed, 45 insertions, 21 deletions
diff --git a/src/soc/intel/common/block/gpio/gpio.c b/src/soc/intel/common/block/gpio/gpio.c index ce867ceadc..f77f88f3e0 100644 --- a/src/soc/intel/common/block/gpio/gpio.c +++ b/src/soc/intel/common/block/gpio/gpio.c @@ -55,6 +55,37 @@ #define GPI_SMI_EN_OFFSET(comm, group) ((comm)->gpi_smi_en_reg_0 + \ ((group) * sizeof(uint32_t))) +static inline size_t relative_pad_in_comm(const struct pad_community *comm, + gpio_t gpio) +{ + return gpio - comm->first_pad; +} + +static inline size_t gpio_group_index_scaled(const struct pad_community *comm, + unsigned int relative_pad, size_t scale) +{ + return (relative_pad / comm->max_pads_per_group) * scale; +} + +static inline size_t gpio_group_index(const struct pad_community *comm, + unsigned int relative_pad) +{ + return gpio_group_index_scaled(comm, relative_pad, 1); +} + +static inline size_t gpio_within_group(const struct pad_community *comm, + unsigned int relative_pad) +{ + return relative_pad % comm->max_pads_per_group; +} + +static inline uint32_t gpio_bitmask_within_group( + const struct pad_community *comm, + unsigned int relative_pad) +{ + return 1U << gpio_within_group(comm, relative_pad); +} + static const struct pad_community *gpio_get_community(gpio_t pad) { size_t gpio_communities; @@ -76,7 +107,7 @@ static void gpio_configure_owner(const struct pad_config *cfg, uint16_t hostsw_reg; int pin; - pin = cfg->pad - comm->first_pad; + pin = relative_pad_in_comm(comm, cfg->pad); /* The 4th bit in pad_config 1 (RO) is used to indicate if the pad * needs GPIO driver ownership. @@ -87,10 +118,9 @@ static void gpio_configure_owner(const struct pad_config *cfg, /* Based on the gpio pin number configure the corresponding bit in * HOSTSW_OWN register. Value of 0x1 indicates GPIO Driver onwership. */ - hostsw_reg = comm->host_own_reg_0 + ((pin / comm->max_pads_per_group) * - sizeof(uint32_t)); - pcr_or32(comm->port, hostsw_reg, (1 << (pin % - comm->max_pads_per_group))); + hostsw_reg = comm->host_own_reg_0; + hostsw_reg += gpio_group_index_scaled(comm, pin, sizeof(uint32_t)); + pcr_or32(comm->port, hostsw_reg, gpio_bitmask_within_group(comm, pin)); } static void gpi_enable_smi(const struct pad_config *cfg, @@ -105,8 +135,8 @@ static void gpi_enable_smi(const struct pad_config *cfg, if (((cfg->pad_config[0]) & PAD_CFG0_ROUTE_SMI) != PAD_CFG0_ROUTE_SMI) return; - pin = cfg->pad - comm->first_pad; - group = pin / comm->max_pads_per_group; + pin = relative_pad_in_comm(comm, cfg->pad); + group = gpio_group_index(comm, pin); sts_reg = GPI_SMI_STS_OFFSET(comm, group); value = pcr_read32(comm->port, sts_reg); @@ -115,7 +145,7 @@ static void gpi_enable_smi(const struct pad_config *cfg, /* Set enable bits */ en_reg = GPI_SMI_EN_OFFSET(comm, group); - pcr_or32(comm->port, en_reg, (1 << (pin % comm->max_pads_per_group))); + pcr_or32(comm->port, en_reg, gpio_bitmask_within_group(comm, pin)); } static void gpio_configure_itss(const struct pad_config *cfg, uint16_t port, @@ -159,7 +189,7 @@ static uint16_t pad_config_offset(const struct pad_community *comm, gpio_t pad) { size_t offset; - offset = pad - comm->first_pad; + offset = relative_pad_in_comm(comm, pad); offset *= GPIO_DWx_SIZE(GPIO_NUM_PAD_CFG_REGS); return offset + comm->pad_cfg_base; } @@ -210,11 +240,9 @@ static void gpio_configure_pad(const struct pad_config *cfg) if (IS_ENABLED(CONFIG_DEBUG_SOC_COMMON_BLOCK_GPIO)) printk(BIOS_DEBUG, - "gpio_padcfg [0x%02x, %02d] DW%d [0x%08x : 0x%08x" + "gpio_padcfg [0x%02x, %02zd] DW%d [0x%08x : 0x%08x" " : 0x%08x]\n", - comm->port, - (cfg->pad - comm->first_pad), - i, + comm->port, relative_pad_in_comm(comm, cfg->pad), i, pad_conf,/* old value */ cfg->pad_config[i],/* value passed from gpio table */ soc_pad_conf);/*new value*/ @@ -305,13 +333,10 @@ void gpio_set(gpio_t gpio_num, int value) uint16_t gpio_acpi_pin(gpio_t gpio_num) { - const struct pad_community *comm; - if (!IS_ENABLED(CONFIG_SOC_INTEL_COMMON_BLOCK_GPIO_MULTI_ACPI_DEVICES)) return gpio_num; - comm = gpio_get_community(gpio_num); - return gpio_num - comm->first_pad; + return relative_pad_in_comm(gpio_get_community(gpio_num), gpio_num); } static void print_gpi_status(const struct gpi_status *sts) @@ -383,12 +408,11 @@ int gpi_status_get(const struct gpi_status *sts, gpio_t pad) uint8_t sts_index; const struct pad_community *comm = gpio_get_community(pad); - pad = pad - comm->first_pad; + pad = relative_pad_in_comm(comm, pad); sts_index = comm->gpi_status_offset; - sts_index += pad / comm->max_pads_per_group; + sts_index += gpio_group_index(comm, pad); - return !!(sts->grp[sts_index] & - (1 << pad % comm->max_pads_per_group)); + return !!(sts->grp[sts_index] & gpio_bitmask_within_group(comm, pad)); } static int gpio_route_pmc_gpio_gpe(int pmc_gpe_num) |