diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/74x164_gpio.c | 3 | ||||
| -rw-r--r-- | drivers/gpio/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/gpio/intel_ich6_gpio.c | 30 | ||||
| -rw-r--r-- | drivers/gpio/sh_pfc.c | 17 |
4 files changed, 45 insertions, 13 deletions
diff --git a/drivers/gpio/74x164_gpio.c b/drivers/gpio/74x164_gpio.c index 750eedfffd..53a639ae65 100644 --- a/drivers/gpio/74x164_gpio.c +++ b/drivers/gpio/74x164_gpio.c @@ -156,8 +156,7 @@ static int gen_74x164_probe(struct udevice *dev) ret = gpio_request_by_name(dev, "oe-gpios", 0, &priv->oe, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); if (ret) { - dev_err(dev, "No oe-pins property\n"); - goto free_buf; + dev_dbg(dev, "No oe-pins property\n"); } uc_priv->bank_name = str; diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 325d053931..15135e538d 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -95,6 +95,14 @@ config MSM_GPIO - APQ8016 - MSM8916 +config OMAP_GPIO + bool "TI OMAP GPIO driver" + depends on ARCH_OMAP2PLUS + default y + help + Support GPIO controllers on the TI OMAP3/4/5 and related (such as + AM335x/AM43xx/AM57xx/DRA7xx/etc) families of SoCs. + config PM8916_GPIO bool "Qualcomm PM8916 PMIC GPIO/keypad driver" depends on DM_GPIO && PMIC_PM8916 diff --git a/drivers/gpio/intel_ich6_gpio.c b/drivers/gpio/intel_ich6_gpio.c index 8b782260bc..0a9eb03fd0 100644 --- a/drivers/gpio/intel_ich6_gpio.c +++ b/drivers/gpio/intel_ich6_gpio.c @@ -46,22 +46,31 @@ struct ich6_bank_priv { uint16_t use_sel; uint16_t io_sel; uint16_t lvl; + u32 lvl_write_cache; + bool use_lvl_write_cache; }; #define GPIO_USESEL_OFFSET(x) (x) #define GPIO_IOSEL_OFFSET(x) (x + 4) #define GPIO_LVL_OFFSET(x) (x + 8) -static int _ich6_gpio_set_value(uint16_t base, unsigned offset, int value) +static int _ich6_gpio_set_value(struct ich6_bank_priv *bank, unsigned offset, + int value) { u32 val; - val = inl(base); + if (bank->use_lvl_write_cache) + val = bank->lvl_write_cache; + else + val = inl(bank->lvl); + if (value) val |= (1UL << offset); else val &= ~(1UL << offset); - outl(val, base); + outl(val, bank->lvl); + if (bank->use_lvl_write_cache) + bank->lvl_write_cache = val; return 0; } @@ -112,6 +121,7 @@ static int ich6_gpio_probe(struct udevice *dev) struct ich6_bank_platdata *plat = dev_get_platdata(dev); struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev); struct ich6_bank_priv *bank = dev_get_priv(dev); + const void *prop; uc_priv->gpio_count = GPIO_PER_BANK; uc_priv->bank_name = plat->bank_name; @@ -119,6 +129,14 @@ static int ich6_gpio_probe(struct udevice *dev) bank->io_sel = plat->base_addr + 4; bank->lvl = plat->base_addr + 8; + prop = fdt_getprop(gd->fdt_blob, dev->of_offset, + "use-lvl-write-cache", NULL); + if (prop) + bank->use_lvl_write_cache = true; + else + bank->use_lvl_write_cache = false; + bank->lvl_write_cache = 0; + return 0; } @@ -160,7 +178,7 @@ static int ich6_gpio_direction_output(struct udevice *dev, unsigned offset, if (ret) return ret; - return _ich6_gpio_set_value(bank->lvl, offset, value); + return _ich6_gpio_set_value(bank, offset, value); } static int ich6_gpio_get_value(struct udevice *dev, unsigned offset) @@ -170,6 +188,8 @@ static int ich6_gpio_get_value(struct udevice *dev, unsigned offset) int r; tmplong = inl(bank->lvl); + if (bank->use_lvl_write_cache) + tmplong |= bank->lvl_write_cache; r = (tmplong & (1UL << offset)) ? 1 : 0; return r; } @@ -178,7 +198,7 @@ static int ich6_gpio_set_value(struct udevice *dev, unsigned offset, int value) { struct ich6_bank_priv *bank = dev_get_priv(dev); - return _ich6_gpio_set_value(bank->lvl, offset, value); + return _ich6_gpio_set_value(bank, offset, value); } static int ich6_gpio_get_function(struct udevice *dev, unsigned offset) diff --git a/drivers/gpio/sh_pfc.c b/drivers/gpio/sh_pfc.c index a0eac137c2..ad8da9ef28 100644 --- a/drivers/gpio/sh_pfc.c +++ b/drivers/gpio/sh_pfc.c @@ -66,17 +66,18 @@ static void gpio_write_raw_reg(void *mapped_reg, } static int gpio_read_bit(struct pinmux_data_reg *dr, + unsigned long offset, unsigned long in_pos) { unsigned long pos; pos = dr->reg_width - (in_pos + 1); - debug("read_bit: addr = %lx, pos = %ld, " - "r_width = %ld\n", dr->reg, pos, dr->reg_width); + debug("read_bit: addr = %lx, pos = %ld, r_width = %ld\n", + dr->reg + offset, pos, dr->reg_width); - return - (gpio_read_raw_reg(dr->mapped_reg + 0x4, dr->reg_width) >> pos) & 1; + return (gpio_read_raw_reg(dr->mapped_reg + offset, + dr->reg_width) >> pos) & 1; } static void gpio_write_bit(struct pinmux_data_reg *dr, @@ -559,12 +560,16 @@ static int sh_gpio_direction_output(unsigned offset, int value) static int sh_gpio_get_value(struct pinmux_info *gpioc, unsigned gpio) { struct pinmux_data_reg *dr = NULL; - int bit = 0; + int bit = 0, offset = 0; if (!gpioc || get_data_reg(gpioc, gpio, &dr, &bit) != 0) return -1; +#if defined(CONFIG_RCAR_GEN3) + if ((gpioc->gpios[gpio].flags & PINMUX_FLAG_TYPE) == PINMUX_TYPE_INPUT) + offset += 4; +#endif - return gpio_read_bit(dr, bit); + return gpio_read_bit(dr, offset, bit); } static int sh_gpio_get(unsigned offset) |