diff options
| -rw-r--r-- | drivers/pinctrl/sh-pfc/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/pinctrl/sh-pfc/pfc-sh73a0.c | 134 |
2 files changed, 135 insertions, 0 deletions
diff --git a/drivers/pinctrl/sh-pfc/Kconfig b/drivers/pinctrl/sh-pfc/Kconfig index 32161c4fbb1d..636a882b406e 100644 --- a/drivers/pinctrl/sh-pfc/Kconfig +++ b/drivers/pinctrl/sh-pfc/Kconfig @@ -72,6 +72,7 @@ config PINCTRL_PFC_SH73A0 def_bool y depends on ARCH_SH73A0 select PINCTRL_SH_PFC + select REGULATOR config PINCTRL_PFC_SH7720 def_bool y diff --git a/drivers/pinctrl/sh-pfc/pfc-sh73a0.c b/drivers/pinctrl/sh-pfc/pfc-sh73a0.c index 587f7772abf2..b783724801d2 100644 --- a/drivers/pinctrl/sh-pfc/pfc-sh73a0.c +++ b/drivers/pinctrl/sh-pfc/pfc-sh73a0.c @@ -20,7 +20,11 @@ */ #include <linux/io.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/pinctrl/pinconf-generic.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/slab.h> #include <mach/sh73a0.h> #include <mach/irqs.h> @@ -3888,6 +3892,92 @@ static const struct pinmux_irq pinmux_irqs[] = { PINMUX_IRQ(EXT_IRQ16L(9), 308), }; +/* ----------------------------------------------------------------------------- + * VCCQ MC0 regulator + */ + +static void sh73a0_vccq_mc0_endisable(struct regulator_dev *reg, bool enable) +{ + struct sh_pfc *pfc = reg->reg_data; + void __iomem *addr = pfc->window[1].virt + 4; + unsigned long flags; + u32 value; + + spin_lock_irqsave(&pfc->lock, flags); + + value = ioread32(addr); + + if (enable) + value |= BIT(28); + else + value &= ~BIT(28); + + iowrite32(value, addr); + + spin_unlock_irqrestore(&pfc->lock, flags); +} + +static int sh73a0_vccq_mc0_enable(struct regulator_dev *reg) +{ + sh73a0_vccq_mc0_endisable(reg, true); + return 0; +} + +static int sh73a0_vccq_mc0_disable(struct regulator_dev *reg) +{ + sh73a0_vccq_mc0_endisable(reg, false); + return 0; +} + +static int sh73a0_vccq_mc0_is_enabled(struct regulator_dev *reg) +{ + struct sh_pfc *pfc = reg->reg_data; + void __iomem *addr = pfc->window[1].virt + 4; + unsigned long flags; + u32 value; + + spin_lock_irqsave(&pfc->lock, flags); + value = ioread32(addr); + spin_unlock_irqrestore(&pfc->lock, flags); + + return !!(value & BIT(28)); +} + +static int sh73a0_vccq_mc0_get_voltage(struct regulator_dev *reg) +{ + return 3300000; +} + +static struct regulator_ops sh73a0_vccq_mc0_ops = { + .enable = sh73a0_vccq_mc0_enable, + .disable = sh73a0_vccq_mc0_disable, + .is_enabled = sh73a0_vccq_mc0_is_enabled, + .get_voltage = sh73a0_vccq_mc0_get_voltage, +}; + +static const struct regulator_desc sh73a0_vccq_mc0_desc = { + .owner = THIS_MODULE, + .name = "vccq_mc0", + .type = REGULATOR_VOLTAGE, + .ops = &sh73a0_vccq_mc0_ops, +}; + +static struct regulator_consumer_supply sh73a0_vccq_mc0_consumers[] = { + REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.0"), +}; + +static const struct regulator_init_data sh73a0_vccq_mc0_init_data = { + .constraints = { + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, + .num_consumer_supplies = ARRAY_SIZE(sh73a0_vccq_mc0_consumers), + .consumer_supplies = sh73a0_vccq_mc0_consumers, +}; + +/* ----------------------------------------------------------------------------- + * Pin bias + */ + #define PORTnCR_PULMD_OFF (0 << 6) #define PORTnCR_PULMD_DOWN (2 << 6) #define PORTnCR_PULMD_UP (3 << 6) @@ -3934,7 +4024,51 @@ static void sh73a0_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin, iowrite8(value, addr); } +/* ----------------------------------------------------------------------------- + * SoC information + */ + +struct sh73a0_pinmux_data { + struct regulator_dev *vccq_mc0; +}; + +static int sh73a0_pinmux_soc_init(struct sh_pfc *pfc) +{ + struct sh73a0_pinmux_data *data; + struct regulator_config cfg = { }; + int ret; + + data = devm_kzalloc(pfc->dev, sizeof(*data), GFP_KERNEL); + if (data == NULL) + return -ENOMEM; + + cfg.dev = pfc->dev; + cfg.init_data = &sh73a0_vccq_mc0_init_data; + cfg.driver_data = pfc; + + data->vccq_mc0 = regulator_register(&sh73a0_vccq_mc0_desc, &cfg); + if (IS_ERR(data->vccq_mc0)) { + ret = PTR_ERR(data->vccq_mc0); + dev_err(pfc->dev, "Failed to register VCCQ MC0 regulator: %d\n", + ret); + return ret; + } + + pfc->soc_data = data; + + return 0; +} + +static void sh73a0_pinmux_soc_exit(struct sh_pfc *pfc) +{ + struct sh73a0_pinmux_data *data = pfc->soc_data; + + regulator_unregister(data->vccq_mc0); +} + static const struct sh_pfc_soc_operations sh73a0_pinmux_ops = { + .init = sh73a0_pinmux_soc_init, + .exit = sh73a0_pinmux_soc_exit, .get_bias = sh73a0_pinmux_get_bias, .set_bias = sh73a0_pinmux_set_bias, }; |