diff options
Diffstat (limited to 'drivers/pinctrl')
105 files changed, 10726 insertions, 2681 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index fb8200b8e8ec..b3fe1d339632 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -35,7 +35,7 @@ config PINCTRL_ADI2 machine and arch are selected to build. config PINCTRL_AS3722 - bool "Pinctrl and GPIO driver for ams AS3722 PMIC" + tristate "Pinctrl and GPIO driver for ams AS3722 PMIC" depends on MFD_AS3722 && GPIOLIB select PINMUX select GENERIC_PINCONF @@ -129,6 +129,17 @@ config PINCTRL_MESON select OF_GPIO select REGMAP_MMIO +config PINCTRL_OXNAS + bool + depends on OF + select PINMUX + select PINCONF + select GENERIC_PINCONF + select GPIOLIB + select OF_GPIO + select GPIOLIB_IRQCHIP + select MFD_SYSCON + config PINCTRL_ROCKCHIP bool select PINMUX @@ -196,8 +207,19 @@ config PINCTRL_COH901 COH 901 335 and COH 901 571/3. They contain 3, 5 or 7 ports of 8 GPIO pins each. +config PINCTRL_MAX77620 + tristate "MAX77620/MAX20024 Pincontrol support" + depends on MFD_MAX77620 + select PINMUX + select GENERIC_PINCONF + help + Say Yes here to enable Pin control support for Maxim PMIC MAX77620. + This PMIC has 8 GPIO pins that work as GPIO as well as special + function in alternate mode. This driver also configure push-pull, + open drain, FPS slots etc. + config PINCTRL_PALMAS - bool "Pinctrl driver for the PALMAS Series MFD devices" + tristate "Pinctrl driver for the PALMAS Series MFD devices" depends on OF && MFD_PALMAS select PINMUX select GENERIC_PINCONF diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 42a5c1dddfef..8ebd7b8e1621 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -16,7 +16,9 @@ obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o obj-$(CONFIG_PINCTRL_AMD) += pinctrl-amd.o obj-$(CONFIG_PINCTRL_DIGICOLOR) += pinctrl-digicolor.o obj-$(CONFIG_PINCTRL_FALCON) += pinctrl-falcon.o +obj-$(CONFIG_PINCTRL_MAX77620) += pinctrl-max77620.o obj-$(CONFIG_PINCTRL_MESON) += meson/ +obj-$(CONFIG_PINCTRL_OXNAS) += pinctrl-oxnas.o obj-$(CONFIG_PINCTRL_PALMAS) += pinctrl-palmas.o obj-$(CONFIG_PINCTRL_PIC32) += pinctrl-pic32.o obj-$(CONFIG_PINCTRL_PISTACHIO) += pinctrl-pistachio.o @@ -35,7 +37,7 @@ obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o obj-$(CONFIG_PINCTRL_ST) += pinctrl-st.o obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o -obj-$(CONFIG_ARCH_BCM) += bcm/ +obj-y += bcm/ obj-$(CONFIG_PINCTRL_BERLIN) += berlin/ obj-y += freescale/ obj-$(CONFIG_X86) += intel/ diff --git a/drivers/pinctrl/bcm/Kconfig b/drivers/pinctrl/bcm/Kconfig index c356223e1c9c..63246770bd74 100644 --- a/drivers/pinctrl/bcm/Kconfig +++ b/drivers/pinctrl/bcm/Kconfig @@ -60,6 +60,7 @@ config PINCTRL_IPROC_GPIO config PINCTRL_CYGNUS_MUX bool "Broadcom Cygnus IOMUX driver" depends on (ARCH_BCM_CYGNUS || COMPILE_TEST) + depends on OF select PINMUX select GENERIC_PINCONF default ARCH_BCM_CYGNUS @@ -99,3 +100,17 @@ config PINCTRL_NS2_MUX The Broadcom Northstar2 IOMUX driver supports group based IOMUX configuration. + +config PINCTRL_NSP_MUX + bool "Broadcom NSP IOMUX driver" + depends on (ARCH_BCM_NSP || COMPILE_TEST) + depends on OF + select PINMUX + select GENERIC_PINCONF + default ARCH_BCM_NSP + help + Say yes here to enable the Broadcom NSP SOC IOMUX driver. + + The Broadcom Northstar Plus IOMUX driver supports pin based IOMUX + configuration, with certain individual pins can be overridden + to GPIO function. diff --git a/drivers/pinctrl/bcm/Makefile b/drivers/pinctrl/bcm/Makefile index 3861a1c1f8ff..2a65111f3c70 100644 --- a/drivers/pinctrl/bcm/Makefile +++ b/drivers/pinctrl/bcm/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_PINCTRL_IPROC_GPIO) += pinctrl-iproc-gpio.o obj-$(CONFIG_PINCTRL_CYGNUS_MUX) += pinctrl-cygnus-mux.o obj-$(CONFIG_PINCTRL_NSP_GPIO) += pinctrl-nsp-gpio.o obj-$(CONFIG_PINCTRL_NS2_MUX) += pinctrl-ns2-mux.o +obj-$(CONFIG_PINCTRL_NSP_MUX) += pinctrl-nsp-mux.o diff --git a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c index 3670f5ea7a12..7f7700716398 100644 --- a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c +++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c @@ -66,6 +66,14 @@ #define GPIO_DRV_STRENGTH_BITS 3 #define GPIO_DRV_STRENGTH_BIT_MASK ((1 << GPIO_DRV_STRENGTH_BITS) - 1) +enum iproc_pinconf_param { + IPROC_PINCONF_DRIVE_STRENGTH = 0, + IPROC_PINCONF_BIAS_DISABLE, + IPROC_PINCONF_BIAS_PULL_UP, + IPROC_PINCONF_BIAS_PULL_DOWN, + IPROC_PINCON_MAX, +}; + /* * Iproc GPIO core * @@ -78,6 +86,10 @@ * @num_banks: number of GPIO banks, each bank supports up to 32 GPIOs * @pinmux_is_supported: flag to indicate this GPIO controller contains pins * that can be individually muxed to GPIO + * @pinconf_disable: contains a list of PINCONF parameters that need to be + * disabled + * @nr_pinconf_disable: total number of PINCONF parameters that need to be + * disabled * @pctl: pointer to pinctrl_dev * @pctldesc: pinctrl descriptor */ @@ -94,6 +106,9 @@ struct iproc_gpio { bool pinmux_is_supported; + enum pin_config_param *pinconf_disable; + unsigned int nr_pinconf_disable; + struct pinctrl_dev *pctl; struct pinctrl_desc pctldesc; }; @@ -360,6 +375,65 @@ static int iproc_gpio_get(struct gpio_chip *gc, unsigned gpio) return !!(readl(chip->base + offset) & BIT(shift)); } +/* + * Mapping of the iProc PINCONF parameters to the generic pin configuration + * parameters + */ +static const enum pin_config_param iproc_pinconf_disable_map[] = { + [IPROC_PINCONF_DRIVE_STRENGTH] = PIN_CONFIG_DRIVE_STRENGTH, + [IPROC_PINCONF_BIAS_DISABLE] = PIN_CONFIG_BIAS_DISABLE, + [IPROC_PINCONF_BIAS_PULL_UP] = PIN_CONFIG_BIAS_PULL_UP, + [IPROC_PINCONF_BIAS_PULL_DOWN] = PIN_CONFIG_BIAS_PULL_DOWN, +}; + +static bool iproc_pinconf_param_is_disabled(struct iproc_gpio *chip, + enum pin_config_param param) +{ + unsigned int i; + + if (!chip->nr_pinconf_disable) + return false; + + for (i = 0; i < chip->nr_pinconf_disable; i++) + if (chip->pinconf_disable[i] == param) + return true; + + return false; +} + +static int iproc_pinconf_disable_map_create(struct iproc_gpio *chip, + unsigned long disable_mask) +{ + unsigned int map_size = ARRAY_SIZE(iproc_pinconf_disable_map); + unsigned int bit, nbits = 0; + + /* figure out total number of PINCONF parameters to disable */ + for_each_set_bit(bit, &disable_mask, map_size) + nbits++; + + if (!nbits) + return 0; + + /* + * Allocate an array to store PINCONF parameters that need to be + * disabled + */ + chip->pinconf_disable = devm_kcalloc(chip->dev, nbits, + sizeof(*chip->pinconf_disable), + GFP_KERNEL); + if (!chip->pinconf_disable) + return -ENOMEM; + + chip->nr_pinconf_disable = nbits; + + /* now store these parameters */ + nbits = 0; + for_each_set_bit(bit, &disable_mask, map_size) + chip->pinconf_disable[nbits++] = iproc_pinconf_disable_map[bit]; + + return 0; +} + static int iproc_get_groups_count(struct pinctrl_dev *pctldev) { return 1; @@ -500,6 +574,9 @@ static int iproc_pin_config_get(struct pinctrl_dev *pctldev, unsigned pin, bool disable, pull_up; int ret; + if (iproc_pinconf_param_is_disabled(chip, param)) + return -ENOTSUPP; + switch (param) { case PIN_CONFIG_BIAS_DISABLE: iproc_gpio_get_pull(chip, gpio, &disable, &pull_up); @@ -548,6 +625,10 @@ static int iproc_pin_config_set(struct pinctrl_dev *pctldev, unsigned pin, for (i = 0; i < num_configs; i++) { param = pinconf_to_config_param(configs[i]); + + if (iproc_pinconf_param_is_disabled(chip, param)) + return -ENOTSUPP; + arg = pinconf_to_config_argument(configs[i]); switch (param) { @@ -633,11 +714,13 @@ static int iproc_gpio_register_pinconf(struct iproc_gpio *chip) } static const struct of_device_id iproc_gpio_of_match[] = { + { .compatible = "brcm,iproc-gpio" }, { .compatible = "brcm,cygnus-ccm-gpio" }, { .compatible = "brcm,cygnus-asiu-gpio" }, { .compatible = "brcm,cygnus-crmu-gpio" }, - { .compatible = "brcm,iproc-gpio" }, - { } + { .compatible = "brcm,iproc-nsp-gpio" }, + { .compatible = "brcm,iproc-stingray-gpio" }, + { /* sentinel */ } }; static int iproc_gpio_probe(struct platform_device *pdev) @@ -646,8 +729,17 @@ static int iproc_gpio_probe(struct platform_device *pdev) struct resource *res; struct iproc_gpio *chip; struct gpio_chip *gc; - u32 ngpios; + u32 ngpios, pinconf_disable_mask = 0; int irq, ret; + bool no_pinconf = false; + + /* NSP does not support drive strength config */ + if (of_device_is_compatible(dev->of_node, "brcm,iproc-nsp-gpio")) + pinconf_disable_mask = BIT(IPROC_PINCONF_DRIVE_STRENGTH); + /* Stingray does not support pinconf in this contr |