diff options
Diffstat (limited to 'drivers/pinctrl/bcm')
| -rw-r--r-- | drivers/pinctrl/bcm/Kconfig | 30 | ||||
| -rw-r--r-- | drivers/pinctrl/bcm/Makefile | 2 | ||||
| -rw-r--r-- | drivers/pinctrl/bcm/pinctrl-iproc-gpio.c (renamed from drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c) | 358 |
3 files changed, 189 insertions, 201 deletions
diff --git a/drivers/pinctrl/bcm/Kconfig b/drivers/pinctrl/bcm/Kconfig index 1a8c83720551..a99ca6a31a88 100644 --- a/drivers/pinctrl/bcm/Kconfig +++ b/drivers/pinctrl/bcm/Kconfig @@ -20,27 +20,41 @@ config PINCTRL_BCM2835 select PINMUX select PINCONF -config PINCTRL_CYGNUS_GPIO - bool "Broadcom Cygnus GPIO (with PINCONF) driver" - depends on OF_GPIO && ARCH_BCM_CYGNUS +config PINCTRL_IPROC_GPIO + bool "Broadcom iProc GPIO (with PINCONF) driver" + depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST) select GPIOLIB_IRQCHIP select PINCONF select GENERIC_PINCONF - default ARCH_BCM_CYGNUS + default ARCH_BCM_IPROC help - Say yes here to enable the Broadcom Cygnus GPIO driver. + Say yes here to enable the Broadcom iProc GPIO driver. + + The Broadcom iProc based SoCs- Cygnus, NS2, NSP and Stingray, use + same GPIO Controller IP hence this driver could be used for all. The Broadcom Cygnus SoC has 3 GPIO controllers including the ASIU GPIO controller (ASIU), the chipCommonG GPIO controller (CCM), and the always-ON GPIO controller (CRMU/AON). All 3 GPIO controllers are supported by this driver. - All 3 Cygnus GPIO controllers support basic PINCONF functions such + The Broadcom NSP has two GPIO controllers including the ChipcommonA + GPIO, the ChipcommonB GPIO. Later controller is supported by this + driver. + + The Broadcom NS2 has two GPIO controller including the CRMU GPIO, + the ChipcommonG GPIO. Both controllers are supported by this driver. + + The Broadcom Stingray GPIO controllers are supported by this driver. + + All above SoCs GPIO controllers support basic PINCONF functions such as bias pull up, pull down, and drive strength configurations, when these pins are muxed to GPIO. - Pins from the ASIU GPIO can be individually muxed to GPIO function, - through interaction with the Cygnus IOMUX controller. + It provides the framework where pins from the individual GPIO can be + individually muxed to GPIO function, through interaction with the + SoCs IOMUX controller. This features could be used only on SoCs which + support individual pin muxing. config PINCTRL_CYGNUS_MUX bool "Broadcom Cygnus IOMUX driver" diff --git a/drivers/pinctrl/bcm/Makefile b/drivers/pinctrl/bcm/Makefile index 2fb1ed85b737..6148367d5e8c 100644 --- a/drivers/pinctrl/bcm/Makefile +++ b/drivers/pinctrl/bcm/Makefile @@ -2,6 +2,6 @@ obj-$(CONFIG_PINCTRL_BCM281XX) += pinctrl-bcm281xx.o obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o -obj-$(CONFIG_PINCTRL_CYGNUS_GPIO) += pinctrl-cygnus-gpio.o +obj-$(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 diff --git a/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c index 12a48f498b75..525ea138d9ca 100644 --- a/drivers/pinctrl/bcm/pinctrl-cygnus-gpio.c +++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c @@ -10,14 +10,16 @@ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * This file contains the Broadcom Cygnus GPIO driver that supports 3 - * GPIO controllers on Cygnus including the ASIU GPIO controller, the + * This file contains the Broadcom Iproc GPIO driver that supports 3 + * GPIO controllers on Iproc including the ASIU GPIO controller, the * chipCommonG GPIO controller, and the always-on GPIO controller. Basic * PINCONF such as bias pull up/down, and drive strength are also supported * in this driver. * - * Pins from the ASIU GPIO can be individually muxed to GPIO function, - * through the interaction with the Cygnus IOMUX controller + * It provides the functionality where pins from the GPIO can be + * individually muxed to GPIO function, if individual pad + * configuration is supported, through the interaction with respective + * SoCs IOMUX controller. */ #include <linux/kernel.h> @@ -34,42 +36,42 @@ #include "../pinctrl-utils.h" -#define CYGNUS_GPIO_DATA_IN_OFFSET 0x00 -#define CYGNUS_GPIO_DATA_OUT_OFFSET 0x04 -#define CYGNUS_GPIO_OUT_EN_OFFSET 0x08 -#define CYGNUS_GPIO_INT_TYPE_OFFSET 0x0c -#define CYGNUS_GPIO_INT_DE_OFFSET 0x10 -#define CYGNUS_GPIO_INT_EDGE_OFFSET 0x14 -#define CYGNUS_GPIO_INT_MSK_OFFSET 0x18 -#define CYGNUS_GPIO_INT_STAT_OFFSET 0x1c -#define CYGNUS_GPIO_INT_MSTAT_OFFSET 0x20 -#define CYGNUS_GPIO_INT_CLR_OFFSET 0x24 -#define CYGNUS_GPIO_PAD_RES_OFFSET 0x34 -#define CYGNUS_GPIO_RES_EN_OFFSET 0x38 +#define IPROC_GPIO_DATA_IN_OFFSET 0x00 +#define IPROC_GPIO_DATA_OUT_OFFSET 0x04 +#define IPROC_GPIO_OUT_EN_OFFSET 0x08 +#define IPROC_GPIO_INT_TYPE_OFFSET 0x0c +#define IPROC_GPIO_INT_DE_OFFSET 0x10 +#define IPROC_GPIO_INT_EDGE_OFFSET 0x14 +#define IPROC_GPIO_INT_MSK_OFFSET 0x18 +#define IPROC_GPIO_INT_STAT_OFFSET 0x1c +#define IPROC_GPIO_INT_MSTAT_OFFSET 0x20 +#define IPROC_GPIO_INT_CLR_OFFSET 0x24 +#define IPROC_GPIO_PAD_RES_OFFSET 0x34 +#define IPROC_GPIO_RES_EN_OFFSET 0x38 /* drive strength control for ASIU GPIO */ -#define CYGNUS_GPIO_ASIU_DRV0_CTRL_OFFSET 0x58 +#define IPROC_GPIO_ASIU_DRV0_CTRL_OFFSET 0x58 /* drive strength control for CCM/CRMU (AON) GPIO */ -#define CYGNUS_GPIO_DRV0_CTRL_OFFSET 0x00 +#define IPROC_GPIO_DRV0_CTRL_OFFSET 0x00 #define GPIO_BANK_SIZE 0x200 #define NGPIOS_PER_BANK 32 #define GPIO_BANK(pin) ((pin) / NGPIOS_PER_BANK) -#define CYGNUS_GPIO_REG(pin, reg) (GPIO_BANK(pin) * GPIO_BANK_SIZE + (reg)) -#define CYGNUS_GPIO_SHIFT(pin) ((pin) % NGPIOS_PER_BANK) +#define IPROC_GPIO_REG(pin, reg) (GPIO_BANK(pin) * GPIO_BANK_SIZE + (reg)) +#define IPROC_GPIO_SHIFT(pin) ((pin) % NGPIOS_PER_BANK) #define GPIO_DRV_STRENGTH_BIT_SHIFT 20 #define GPIO_DRV_STRENGTH_BITS 3 #define GPIO_DRV_STRENGTH_BIT_MASK ((1 << GPIO_DRV_STRENGTH_BITS) - 1) /* - * Cygnus GPIO core + * Iproc GPIO core * * @dev: pointer to device - * @base: I/O register base for Cygnus GPIO controller - * @io_ctrl: I/O register base for certain type of Cygnus GPIO controller that + * @base: I/O register base for Iproc GPIO controller + * @io_ctrl: I/O register base for certain type of Iproc GPIO controller that * has the PINCONF support implemented outside of the GPIO block * @lock: lock to protect access to I/O registers * @gc: GPIO chip @@ -79,7 +81,7 @@ * @pctl: pointer to pinctrl_dev * @pctldesc: pinctrl descriptor */ -struct cygnus_gpio { +struct iproc_gpio { struct device *dev; void __iomem *base; @@ -96,33 +98,33 @@ struct cygnus_gpio { struct pinctrl_desc pctldesc; }; -static inline struct cygnus_gpio *to_cygnus_gpio(struct gpio_chip *gc) +static inline struct iproc_gpio *to_iproc_gpio(struct gpio_chip *gc) { - return container_of(gc, struct cygnus_gpio, gc); + return container_of(gc, struct iproc_gpio, gc); } /* * Mapping from PINCONF pins to GPIO pins is 1-to-1 */ -static inline unsigned cygnus_pin_to_gpio(unsigned pin) +static inline unsigned iproc_pin_to_gpio(unsigned pin) { return pin; } /** - * cygnus_set_bit - set or clear one bit (corresponding to the GPIO pin) in a - * Cygnus GPIO register + * iproc_set_bit - set or clear one bit (corresponding to the GPIO pin) in a + * Iproc GPIO register * - * @cygnus_gpio: Cygnus GPIO device + * @iproc_gpio: Iproc GPIO device * @reg: register offset * @gpio: GPIO pin * @set: set or clear */ -static inline void cygnus_set_bit(struct cygnus_gpio *chip, unsigned int reg, +static inline void iproc_set_bit(struct iproc_gpio *chip, unsigned int reg, unsigned gpio, bool set) { - unsigned int offset = CYGNUS_GPIO_REG(gpio, reg); - unsigned int shift = CYGNUS_GPIO_SHIFT(gpio); + unsigned int offset = IPROC_GPIO_REG(gpio, reg); + unsigned int shift = IPROC_GPIO_SHIFT(gpio); u32 val; val = readl(chip->base + offset); @@ -133,19 +135,19 @@ static inline void cygnus_set_bit(struct cygnus_gpio *chip, unsigned int reg, writel(val, chip->base + offset); } -static inline bool cygnus_get_bit(struct cygnus_gpio *chip, unsigned int reg, +static inline bool iproc_get_bit(struct iproc_gpio *chip, unsigned int reg, unsigned gpio) { - unsigned int offset = CYGNUS_GPIO_REG(gpio, reg); - unsigned int shift = CYGNUS_GPIO_SHIFT(gpio); + unsigned int offset = IPROC_GPIO_REG(gpio, reg); + unsigned int shift = IPROC_GPIO_SHIFT(gpio); return !!(readl(chip->base + offset) & BIT(shift)); } -static void cygnus_gpio_irq_handler(struct irq_desc *desc) +static void iproc_gpio_irq_handler(struct irq_desc *desc) { struct gpio_chip *gc = irq_desc_get_handler_data(desc); - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); struct irq_chip *irq_chip = irq_desc_get_chip(desc); int i, bit; @@ -154,7 +156,7 @@ static void cygnus_gpio_irq_handler(struct irq_desc *desc) /* go through the entire GPIO banks and handle all interrupts */ for (i = 0; i < chip->num_banks; i++) { unsigned long val = readl(chip->base + (i * GPIO_BANK_SIZE) + - CYGNUS_GPIO_INT_MSTAT_OFFSET); + IPROC_GPIO_INT_MSTAT_OFFSET); for_each_set_bit(bit, &val, NGPIOS_PER_BANK) { unsigned pin = NGPIOS_PER_BANK * i + bit; @@ -165,7 +167,7 @@ static void cygnus_gpio_irq_handler(struct irq_desc *desc) * handler, so we do not leave any window */ writel(BIT(bit), chip->base + (i * GPIO_BANK_SIZE) + - CYGNUS_GPIO_INT_CLR_OFFSET); + IPROC_GPIO_INT_CLR_OFFSET); generic_handle_irq(child_irq); } @@ -175,60 +177,60 @@ static void cygnus_gpio_irq_handler(struct irq_desc *desc) } -static void cygnus_gpio_irq_ack(struct irq_data *d) +static void iproc_gpio_irq_ack(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned gpio = d->hwirq; - unsigned int offset = CYGNUS_GPIO_REG(gpio, - CYGNUS_GPIO_INT_CLR_OFFSET); - unsigned int shift = CYGNUS_GPIO_SHIFT(gpio); + unsigned int offset = IPROC_GPIO_REG(gpio, + IPROC_GPIO_INT_CLR_OFFSET); + unsigned int shift = IPROC_GPIO_SHIFT(gpio); u32 val = BIT(shift); writel(val, chip->base + offset); } /** - * cygnus_gpio_irq_set_mask - mask/unmask a GPIO interrupt + * iproc_gpio_irq_set_mask - mask/unmask a GPIO interrupt * * @d: IRQ chip data * @unmask: mask/unmask GPIO interrupt */ -static void cygnus_gpio_irq_set_mask(struct irq_data *d, bool unmask) +static void iproc_gpio_irq_set_mask(struct irq_data *d, bool unmask) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned gpio = d->hwirq; - cygnus_set_bit(chip, CYGNUS_GPIO_INT_MSK_OFFSET, gpio, unmask); + iproc_set_bit(chip, IPROC_GPIO_INT_MSK_OFFSET, gpio, unmask); } -static void cygnus_gpio_irq_mask(struct irq_data *d) +static void iproc_gpio_irq_mask(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); - cygnus_gpio_irq_set_mask(d, false); + iproc_gpio_irq_set_mask(d, false); spin_unlock_irqrestore(&chip->lock, flags); } -static void cygnus_gpio_irq_unmask(struct irq_data *d) +static void iproc_gpio_irq_unmask(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); - cygnus_gpio_irq_set_mask(d, true); + iproc_gpio_irq_set_mask(d, true); spin_unlock_irqrestore(&chip->lock, flags); } -static int cygnus_gpio_irq_set_type(struct irq_data *d, unsigned int type) +static int iproc_gpio_irq_set_type(struct irq_data *d, unsigned int type) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned gpio = d->hwirq; bool level_triggered = false; bool dual_edge = false; @@ -263,10 +265,10 @@ static int cygnus_gpio_irq_set_type(struct irq_data *d, unsigned int type) } spin_lock_irqsave(&chip->lock, flags); - cygnus_set_bit(chip, CYGNUS_GPIO_INT_TYPE_OFFSET, gpio, + iproc_set_bit(chip, IPROC_GPIO_INT_TYPE_OFFSET, gpio, level_triggered); - cygnus_set_bit(chip, CYGNUS_GPIO_INT_DE_OFFSET, gpio, dual_edge); - cygnus_set_bit(chip, CYGNUS_GPIO_INT_EDGE_OFFSET, gpio, + iproc_set_bit(chip, IPROC_GPIO_INT_DE_OFFSET, gpio, dual_edge); + iproc_set_bit(chip, IPROC_GPIO_INT_EDGE_OFFSET, gpio, rising_or_high); spin_unlock_irqrestore(&chip->lock, flags); @@ -277,32 +279,32 @@ static int cygnus_gpio_irq_set_type(struct irq_data *d, unsigned int type) return 0; } -static struct irq_chip cygnus_gpio_irq_chip = { - .name = "bcm-cygnus-gpio", - .irq_ack = cygnus_gpio_irq_ack, - .irq_mask = cygnus_gpio_irq_mask, - .irq_unmask = cygnus_gpio_irq_unmask, - .irq_set_type = cygnus_gpio_irq_set_type, +static struct irq_chip iproc_gpio_irq_chip = { + .name = "bcm-iproc-gpio", + .irq_ack = iproc_gpio_irq_ack, + .irq_mask = iproc_gpio_irq_mask, + .irq_unmask = iproc_gpio_irq_unmask, + .irq_set_type = iproc_gpio_irq_set_type, }; /* - * Request the Cygnus IOMUX pinmux controller to mux individual pins to GPIO + * Request the Iproc IOMUX pinmux controller to mux individual pins to GPIO */ -static int cygnus_gpio_request(struct gpio_chip *gc, unsigned offset) +static int iproc_gpio_request(struct gpio_chip *gc, unsigned offset) { - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned gpio = gc->base + offset; - /* not all Cygnus GPIO pins can be muxed individually */ + /* not all Iproc GPIO pins can be muxed individually */ if (!chip->pinmux_is_supported) return 0; return pinctrl_request_gpio(gpio); } -static void cygnus_gpio_free(struct gpio_chip *gc, unsigned offset) +static void iproc_gpio_free(struct gpio_chip *gc, unsigned offset) { - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned gpio = gc->base + offset; if (!chip->pinmux_is_supported) @@ -311,13 +313,13 @@ static void cygnus_gpio_free(struct gpio_chip *gc, unsigned offset) pinctrl_free_gpio(gpio); } -static int cygnus_gpio_direction_input(struct gpio_chip *gc, unsigned gpio) +static int iproc_gpio_direction_input(struct gpio_chip *gc, unsigned gpio) { - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); - cygnus_set_bit(chip, CYGNUS_GPIO_OUT_EN_OFFSET, gpio, false); + iproc_set_bit(chip, IPROC_GPIO_OUT_EN_OFFSET, gpio, false); spin_unlock_irqrestore(&chip->lock, flags); dev_dbg(chip->dev, "gpio:%u set input\n", gpio); @@ -325,15 +327,15 @@ static int cygnus_gpio_direction_input(struct gpio_chip *gc, unsigned gpio) return 0; } -static int cygnus_gpio_direction_output(struct gpio_chip *gc, unsigned gpio, +static int iproc_gpio_direction_output(struct gpio_chip *gc, unsigned gpio, int val) { - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); - cygnus_set_bit(chip, CYGNUS_GPIO_OUT_EN_OFFSET, gpio, true); - cygnus_set_bit(chip, CYGNUS_GPIO_DATA_OUT_OFFSET, gpio, !!(val)); + iproc_set_bit(chip, IPROC_GPIO_OUT_EN_OFFSET, gpio, true); + iproc_set_bit(chip, IPROC_GPIO_DATA_OUT_OFFSET, gpio, !!(val)); spin_unlock_irqrestore(&chip->lock, flags); dev_dbg(chip->dev, "gpio:%u set output, value:%d\n", gpio, val); @@ -341,29 +343,29 @@ static int cygnus_gpio_direction_output(struct gpio_chip *gc, unsigned gpio, return 0; } -static void cygnus_gpio_set(struct gpio_chip *gc, unsigned gpio, int val) +static void iproc_gpio_set(struct gpio_chip *gc, unsigned gpio, int val) { - struct cygnus_gpio *chip = to_cygnus_gpio(gc); + struct iproc_gpio *chip = to_iproc_gpio(gc); unsigned long flags; spin_lock_irqsave(&chip->lock, flags); - cygnus_set_bit(chip, CYGNUS_GPIO_DATA_OUT_OFFSET, gpio, !!(val)); + iproc_set_bit(chip, IPROC_GPIO_DATA_OUT_OFFSET, gpio, !!(val)); spin_unlock_irqrestore(&chip->lock, flags); dev_dbg(chip->dev, "gpio:%u set, value:%d\n", gpio, val); } -static int cygnus_gpio_get(struct gpio_chip *gc, unsigned gpio) +static int iproc_gpio_get(struct gpio_chip *gc, unsigned gpio) { - struct cygnus_gpio *chip = to_cygnus_gpio(gc); - unsigned int offset = CYGNUS_GPIO_REG(gpio, - CYGNUS_GPIO_DATA_IN_OFFSET); - unsigned int shift = CYGNUS_GPIO_SHIFT(gpio); + struct iproc_gpio *chip = to_iproc_gpio(gc); + unsigned int offset = IPROC_GPIO_REG(gpio, + IPROC_GPIO_DATA_IN_OFFSET); + unsigned int shift = IPROC_GPIO_SHIFT(gpio); return !!(readl(chip->base + offset) & BIT(shift)); } -static int cygnus_get_groups_count(struct pinctrl_dev *pctldev) +static int iproc_get_groups_count(struct pinctrl_dev *pctldev) { return 1; } @@ -372,20 +374,20 @@ static int cygnus_get_groups_count(struct pinctrl_dev *pctldev) * Only one group: "gpio_grp", since this local pinctrl device only performs * GPIO specific PINCONF configurations */ -static const char *cygnus_get_group_name(struct pinctrl_dev *pctldev, +static const char *iproc_get_group_name(struct pinctrl_dev *pctldev, unsigned selector) { return "gpio_grp"; } -static const struct pinctrl_ops cygnus_pctrl_ops = { - .get_groups_count = cygnus_get_groups_count, - .get_group_name = cygnus_get_group_name, +static const struct pinctrl_ops iproc_pctrl_ops = { + .get_groups_count = iproc_get_groups_count, + .get_group_name = iproc_get_group_name, .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, .dt_free_map = pinctrl_utils_dt_free_map, }; -static int cygnus_gpio_set_pull(struct cygnus_gpio *chip, unsigned gpio, +static int iproc_gpio_set_pull(struct iproc_gpio *chip, unsigned gpio, bool disable, bool pull_up) { unsigned long flags; @@ -393,11 +395,11 @@ static int cygnus_gpio_set_pull(struct cygnus_gpio *chip, unsigned gpio, spin_lock_irqsave(&chip->lock, flags); if (disable) { - cygnus_set_bit(chip, CYGNUS_GPIO_RES_EN_OFFSET, gpio, false); + iproc_set_bit(chip, IPROC_GPIO_RES_EN_OFFSET, gpio, false); } else { - cygnus_set_bit(chip, CYGNUS_GPIO_PAD_RES_OFFSET, gpio, + iproc_set_bit(chip, IPROC_GPIO_PAD_RES_OFFSET, gpio, pull_up); - cygnus_set_bit(chip, CYGNUS_GPIO_RES_EN_OFFSET, gpio, true); + iproc_set_bit(chip, IPROC_GPIO_RES_EN_OFFSET, gpio, true); } spin_unlock_irqrestore(&chip->lock, flags); @@ -407,18 +409,18 @@ static int cygnus_gpio_set_pull(struct cygnus_gpio *chip, unsigned gpio, return 0; } -static void cygnus_gpio_get_pull(struct cygnus_gpio *chip, unsigned gpio, +static void iproc_gpio_get_pull(struct iproc_gpio *chip, unsigned gpio, bool *disable, bool *pull_up) { unsigned long flags; spin_lock_irqsave(&chip->lock, flags); - *disable = !cygnus_get_bit(chip, CYGNUS_GPIO_RES_EN_OFFSET, gpio); - *pull_up = cygnus_get_bit(chip, CYGNUS_GPIO_PAD_RES_OFFSET, gpio); + *disable = !iproc_get_bit(chip, IPROC_GPIO_RES_EN_OFFSET, gpio); + *pull_up = iproc_get_bit(chip, IPROC_GPIO_PAD_RES_OFFSET, gpio); spin_unlock_irqrestore(&chip->lock, flags); } -static int cygnus_gpio_set_strength(struct cygnus_gpio *chip, unsigned gpio, +static int iproc_gpio_set_strength(struct iproc_gpio *chip, unsigned gpio, unsigned strength) { void __iomem *base; @@ -432,14 +434,14 @@ static int cygnus_gpio_set_strength(struct cygnus_gpio *chip, unsigned gpio, if (chip->io_ctrl) { base = chip->io_ctrl; - offset = CYGNUS_GPIO_DRV0_CTRL_OFFSET; + offset = IPROC_GPIO_DRV0_CTRL_OFFSET; } else { base = chip->base; - offset = CYGNUS_GPIO_REG(gpio, - CYGNUS_GPIO_ASIU_DRV0_CTRL_OFFSET); + offset = IPROC_GPIO_REG(gpio, + IPROC_GPIO_ASIU_DRV0_CTRL_OFFSET); } - shift = CYGNUS_GPIO_SHIFT(gpio); + shift = IPROC_GPIO_SHIFT(gpio); dev_dbg(chip->dev, "gpio:%u set drive strength:%d mA\n", gpio, strength); @@ -458,7 +460,7 @@ static int cygnus_gpio_set_strength(struct cygnus_gpio *chip, unsigned gpio, return 0; } -static int cygnus_gpio_get_strength(struct cygnus_gpio *chip, unsigned gpio, +static int iproc_gpio_get_strength(struct iproc_gpio *chip, unsigned gpio, u16 *strength) { void __iomem *base; @@ -468,14 +470,14 @@ static int cygnus_gpio_get_strength(struct cygnus_gpio *chip, unsigned gpio, if (chip->io_ctrl) { base = chip->io_ctrl; - offset = CYGNUS_GPIO_DRV0_CTRL_OFFSET; + offset = IPROC_GPIO_DRV0_CTRL_OFFSET; } else { base = chip->base; - offset = CYGNUS_GPIO_REG(gpio, - CYGNUS_GPIO_ASIU_DRV0_CTRL_OFFSET); + offset = IPROC_GPIO_REG(gpio, + IPROC_GPIO_ASIU_DRV0_CTRL_OFFSET); } - shift = CYGNUS_GPIO_SHIFT(gpio); + shift = IPROC_GPIO_SHIFT(gpio); spin_lock_irqsave(&chip->lock, flags); *strength = 0; @@ -493,44 +495,43 @@ static int cygnus_gpio_get_strength(struct cygnus_gpio *chip, unsigned gpio, return 0; } -static int cygnus_pin_config_get(struct pinctrl_dev *pctldev, unsigned pin, +static int iproc_pin_config_get(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *config) { - struct cygnus_gpio *chip = pinctrl_dev_get_drvdata(pctldev); + struct iproc_gpio *chip = pinctrl_dev_get_drvdata(pctldev); enum pin_config_param param = pinconf_to_config_param(*config); - unsigned gpio = cygnus_pin_to_gpio(pin); + unsigned gpio = iproc_pin_to_gpio(pin); u16 arg; bool disable, pull_up; int ret; switch (param) { case PIN_CONFIG_BIAS_DISABLE: - cygnus_gpio_get_pull(chip, gpio, &disable, &pull_up); + iproc_gpio_get_pull(chip, gpio, &disable, &pull_up); if (disable) return 0; else return -EINVAL; case PIN_CONFIG_BIAS_PULL_UP: - cygnus_gpio_get_pull(chip, gpio, &disable, &pull_up); + iproc_gpio_get_pull(chip, gpio, &disable, &pull_up); if (!disable && pull_up) return 0; else return -EINVAL; case PIN_CONFIG_BIAS_PULL_DOWN: - cygnus_gpio_get_pull(chip, gpio, &disable, &pull_up); + iproc_gpio_get_pull(chip, gpio, &disable, &pull_up); if (!disable && !pull_up) return 0; else return -EINVAL; case PIN_CONFIG_DRIVE_STRENGTH: - ret = cygnus_gpio_get_strength(chip, gpio, &arg); + ret = iproc_gpio_get_strength(chip, gpio, &arg); if (ret) return ret; - else - *config = pinconf_to_config_packed(param, arg); + *config = pinconf_to_config_packed(param, arg); return 0; @@ -541,13 +542,13 @@ static int cygnus_pin_config_get(struct pinctrl_dev *pctldev, unsigned pin, return -ENOTSUPP; } -static int cygnus_pin_config_set(struct pinctrl_dev *pctldev, unsigned pin, +static int iproc_pin_config_set(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *configs, unsigned num_configs) { - struct cygnus_gpio *chip = pinctrl_dev_get_drvdata(pctldev); + struct iproc_gpio *chip = pinctrl_dev_get_drvdata(pctldev); enum pin_config_param param; u16 arg; - unsigned i, gpio = cygnus_pin_to_gpio(pin); + unsigned i, gpio = iproc_pin_to_gpio(pin); int ret = -ENOTSUPP; for (i = 0; i < num_configs; i++) { @@ -556,25 +557,25 @@ static int cygnus_pin_config_set(struct pinctrl_dev *pctldev, unsigned pin, switch (param) { case PIN_CONFIG_BIAS_DISABLE: - ret = cygnus_gpio_set_pull(chip, gpio, true, false); + ret = iproc_gpio_set_pull(chip, gpio, true, false); if (ret < 0) goto out; break; case PIN_CONFIG_BIAS_PULL_UP: - ret = cygnus_gpio_set_pull(chip, gpio, false, true); + ret = iproc_gpio_set_pull(chip, gpio, false, true); if (ret < 0) goto out; break; case PIN_CONFIG_BIAS_PULL_DOWN: - ret = cygnus_gpio_set_pull(chip, gpio, false, false); + ret = iproc_gpio_set_pull(chip, gpio, false, false); if (ret < 0) goto out; break; case PIN_CONFIG_DRIVE_STRENGTH: - ret = cygnus_gpio_set_strength(chip, gpio, arg); + ret = iproc_gpio_set_strength(chip, gpio, arg); if (ret < 0) goto out; break; @@ -589,20 +590,20 @@ out: return ret; } -static const struct pinconf_ops cygnus_pconf_ops = { +static const struct pinconf_ops iproc_pconf_ops = { .is_generic = true, - .pin_config_get = cygnus_pin_config_get, - .pin_config_set = cygnus_pin_config_set, + .pin_config_get = iproc_pin_config_get, + .pin_config_set = iproc_pin_config_set, }; /* - * Cygnus GPIO controller supports some PINCONF related configurations such as + * Iproc GPIO controller supports some PINCONF related configurations such as * pull up, pull down, and drive strength, when the pin is configured to GPIO * * Here a local pinctrl device is created with simple 1-to-1 pin mapping to the * local GPIO pins */ -static int cygnus_gpio_register_pinconf(struct cygnus_gpio *chip) +static int iproc_gpio_register_pinconf(struct iproc_gpio *chip) { struct pinctrl_desc *pctldesc = &chip->pctldesc; struct pinctrl_pin_desc *pins; @@ -622,10 +623,10 @@ static int cygnus_gpio_register_pinconf(struct cygnus_gpio *chip) } pctldesc->name = dev_name(chip->dev); - pctldesc->pctlops = &cygnus_pctrl_ops; + pctldesc->pctlops = &iproc_pctrl_ops; pctldesc->pins = pins; pctldesc->npins = gc->ngpio; - pctldesc->confops = &cygnus_pconf_ops; + pctldesc->confops = &iproc_pconf_ops; chip->pctl = pinctrl_register(pctldesc, chip->dev, chip); if (IS_ERR(chip->pctl)) { @@ -636,59 +637,27 @@ static int cygnus_gpio_register_pinconf(struct cygnus_gpio *chip) return 0; } -static void cygnus_gpio_unregister_pinconf(struct cygnus_gpio *chip) +static void iproc_gpio_unregister_pinconf(struct cygnus_gpio *chip) { - if (chip->pctl) - pinctrl_unregister(chip->pctl); + pinctrl_unregister(chip->pctl); } -struct cygnus_gpio_data { - unsigned num_gpios; -}; - -static const struct cygnus_gpio_data cygnus_cmm_gpio_data = { - .num_gpios = 24, -}; - -static const struct cygnus_gpio_data cygnus_asiu_gpio_data = { - .num_gpios = 146, +static const struct of_device_id iproc_gpio_of_match[] = { + { .compatible = "brcm,cygnus-ccm-gpio" }, + { .compatible = "brcm,cygnus-asiu-gpio" }, + { .compatible = "brcm,cygnus-crmu-gpio" }, + { .compatible = "brcm,iproc-gpio" }, + { } }; -static const struct cygnus_gpio_data cygnus_crmu_gpio_data = { - .num_gpios = 6, -}; - -static const struct of_device_id cygnus_gpio_of_match[] = { - { - .compatible = "brcm,cygnus-ccm-gpio", - .data = &cygnus_cmm_gpio_data, - }, - { - .compatible = "brcm,cygnus-asiu-gpio", - .data = &cygnus_asiu_gpio_data, - }, - { - .compatible = "brcm,cygnus-crmu-gpio", - .data = &cygnus_crmu_gpio_data, - } -}; - -static int cygnus_gpio_probe(struct platform_device *pdev) +static int iproc_gpio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct resource *res; - struct cygnus_gpio *chip; + struct iproc_gpio *chip; struct gpio_chip *gc; u32 ngpios; int irq, ret; - const struct of_device_id *match; - const struct cygnus_gpio_data *gpio_data; - - match = of_match_device(cygnus_gpio_of_match, dev); - if (!match) - return -ENODEV; - gpio_data = match->data; - ngpios = gpio_data->num_gpios; chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); if (!chip) @@ -713,6 +682,11 @@ static int cygnus_gpio_probe(struct platform_device *pdev) } } + if (of_property_read_u32(dev->of_node, "ngpios", &ngpios)) { + dev_err(&pdev->dev, "missing ngpios DT property\n"); + return -ENODEV; + } + spin_lock_init(&chip->lock); gc = &chip->gc; @@ -722,12 +696,12 @@ static int cygnus_gpio_probe(struct platform_device *pdev) gc->label = dev_name(dev); gc->dev = dev; gc->of_node = dev->of_node; - gc->request = cygnus_gpio_request; - gc->free = cygnus_gpio_free; - gc->direction_input = cygnus_gpio_direction_input; - gc->direction_output = cygnus_gpio_direction_output; - gc->set = cygnus_gpio_set; - gc->get = cygnus_gpio_get; + gc->request = iproc_gpio_request; + gc->free = iproc_gpio_free; + gc->direction_input = iproc_gpio_direction_input; + gc->direction_output = iproc_gpio_direction_output; + gc->set = iproc_gpio_set; + gc->get = iproc_gpio_get; chip->pinmux_is_supported = of_property_read_bool(dev->of_node, "gpio-ranges"); @@ -738,7 +712,7 @@ static int cygnus_gpio_probe(struct platform_device *pdev) return ret; } - ret = cygnus_gpio_register_pinconf(chip); + ret = iproc_gpio_register_pinconf(chip); if (ret) { dev_err(dev, "unable to register pinconf\n"); goto err_rm_gpiochip; @@ -747,21 +721,21 @@ static int cygnus_gpio_probe(struct platform_device *pdev) /* optional GPIO interrupt support */ irq = platform_get_irq(pdev, 0); if (irq) { - ret = gpiochip_irqchip_add(gc, &cygnus_gpio_irq_chip, 0, + ret = gpiochip_irqchip_add(gc, &iproc_gpio_irq_chip, 0, handle_simple_irq, IRQ_TYPE_NONE); if (ret) { dev_err(dev, "no GPIO irqchip\n"); goto err_unregister_pinconf; } - gpiochip_set_chained_irqchip(gc, &cygnus_gpio_irq_chip, irq, - cygnus_gpio_irq_handler); + gpiochip_set_chained_irqchip(gc, &iproc_gpio_irq_chip, irq, + iproc_gpio_irq_handler); } return 0; err_unregister_pinconf: - cygnus_gpio_unregister_pinconf(chip); + iproc_gpio_unregister_pinconf(chip); err_rm_gpiochip: gpiochip_remove(gc); @@ -769,16 +743,16 @@ err_rm_gpiochip: return ret; } -static struct platform_driver cygnus_gpio_driver = { +static struct platform_driver iproc_gpio_driver = { .driver = { - .name = "cygnus-gpio", - .of_match_table = cygnus_gpio_of_match, + .name = "iproc-gpio", + .of_match_table = iproc_gpio_of_match, }, - .probe = cygnus_gpio_probe, + .probe = iproc_gpio_probe, }; -static int __init cygnus_gpio_init(void) +static int __init iproc_gpio_init(void) { - return platform_driver_probe(&cygnus_gpio_driver, cygnus_gpio_probe); + return platform_driver_probe(&iproc_gpio_driver, iproc_gpio_probe); } -arch_initcall_sync(cygnus_gpio_init); +arch_initcall_sync(iproc_gpio_init); |