| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Alexandre Belloni | 3784 | 88.16% | 6 | 66.67% |
| Quentin Schulz | 505 | 11.77% | 1 | 11.11% |
| Kees Cook | 2 | 0.05% | 1 | 11.11% |
| Colin Ian King | 1 | 0.02% | 1 | 11.11% |
| Total | 4292 | 9 |
// SPDX-License-Identifier: (GPL-2.0 OR MIT) /* * Microsemi SoCs pinctrl driver * * Author: <alexandre.belloni@free-electrons.com> * License: Dual MIT/GPL * Copyright (c) 2017 Microsemi Corporation */ #include <linux/gpio/driver.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/of_device.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinmux.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/slab.h> #include "core.h" #include "pinconf.h" #include "pinmux.h" #define OCELOT_GPIO_OUT_SET 0x0 #define OCELOT_GPIO_OUT_CLR 0x4 #define OCELOT_GPIO_OUT 0x8 #define OCELOT_GPIO_IN 0xc #define OCELOT_GPIO_OE 0x10 #define OCELOT_GPIO_INTR 0x14 #define OCELOT_GPIO_INTR_ENA 0x18 #define OCELOT_GPIO_INTR_IDENT 0x1c #define OCELOT_GPIO_ALT0 0x20 #define OCELOT_GPIO_ALT1 0x24 #define OCELOT_GPIO_SD_MAP 0x28 #define OCELOT_FUNC_PER_PIN 4 enum { FUNC_NONE, FUNC_GPIO, FUNC_IRQ0_IN, FUNC_IRQ0_OUT, FUNC_IRQ1_IN, FUNC_IRQ1_OUT, FUNC_MIIM1, FUNC_MIIM2, FUNC_PCI_WAKE, FUNC_PTP0, FUNC_PTP1, FUNC_PTP2, FUNC_PTP3, FUNC_PWM, FUNC_RECO_CLK0, FUNC_RECO_CLK1, FUNC_SFP0, FUNC_SFP1, FUNC_SFP2, FUNC_SFP3, FUNC_SFP4, FUNC_SFP5, FUNC_SFP6, FUNC_SFP7, FUNC_SFP8, FUNC_SFP9, FUNC_SFP10, FUNC_SFP11, FUNC_SFP12, FUNC_SFP13, FUNC_SFP14, FUNC_SFP15, FUNC_SG0, FUNC_SG1, FUNC_SG2, FUNC_SI, FUNC_TACHO, FUNC_TWI, FUNC_TWI2, FUNC_TWI_SCL_M, FUNC_UART, FUNC_UART2, FUNC_MAX }; static const char *const ocelot_function_names[] = { [FUNC_NONE] = "none", [FUNC_GPIO] = "gpio", [FUNC_IRQ0_IN] = "irq0_in", [FUNC_IRQ0_OUT] = "irq0_out", [FUNC_IRQ1_IN] = "irq1_in", [FUNC_IRQ1_OUT] = "irq1_out", [FUNC_MIIM1] = "miim1", [FUNC_MIIM2] = "miim2", [FUNC_PCI_WAKE] = "pci_wake", [FUNC_PTP0] = "ptp0", [FUNC_PTP1] = "ptp1", [FUNC_PTP2] = "ptp2", [FUNC_PTP3] = "ptp3", [FUNC_PWM] = "pwm", [FUNC_RECO_CLK0] = "reco_clk0", [FUNC_RECO_CLK1] = "reco_clk1", [FUNC_SFP0] = "sfp0", [FUNC_SFP1] = "sfp1", [FUNC_SFP2] = "sfp2", [FUNC_SFP3] = "sfp3", [FUNC_SFP4] = "sfp4", [FUNC_SFP5] = "sfp5", [FUNC_SFP6] = "sfp6", [FUNC_SFP7] = "sfp7", [FUNC_SFP8] = "sfp8", [FUNC_SFP9] = "sfp9", [FUNC_SFP10] = "sfp10", [FUNC_SFP11] = "sfp11", [FUNC_SFP12] = "sfp12", [FUNC_SFP13] = "sfp13", [FUNC_SFP14] = "sfp14", [FUNC_SFP15] = "sfp15", [FUNC_SG0] = "sg0", [FUNC_SG1] = "sg1", [FUNC_SG2] = "sg2", [FUNC_SI] = "si", [FUNC_TACHO] = "tacho", [FUNC_TWI] = "twi", [FUNC_TWI2] = "twi2", [FUNC_TWI_SCL_M] = "twi_scl_m", [FUNC_UART] = "uart", [FUNC_UART2] = "uart2", }; struct ocelot_pmx_func { const char **groups; unsigned int ngroups; }; struct ocelot_pin_caps { unsigned int pin; unsigned char functions[OCELOT_FUNC_PER_PIN]; }; struct ocelot_pinctrl { struct device *dev; struct pinctrl_dev *pctl; struct gpio_chip gpio_chip; struct regmap *map; struct pinctrl_desc *desc; struct ocelot_pmx_func func[FUNC_MAX]; u8 stride; }; #define OCELOT_P(p, f0, f1, f2) \ static struct ocelot_pin_caps ocelot_pin_##p = { \ .pin = p, \ .functions = { \ FUNC_GPIO, FUNC_##f0, FUNC_##f1, FUNC_##f2, \ }, \ } OCELOT_P(0, SG0, NONE, NONE); OCELOT_P(1, SG0, NONE, NONE); OCELOT_P(2, SG0, NONE, NONE); OCELOT_P(3, SG0, NONE, NONE); OCELOT_P(4, IRQ0_IN, IRQ0_OUT, TWI_SCL_M); OCELOT_P(5, IRQ1_IN, IRQ1_OUT, PCI_WAKE); OCELOT_P(6, UART, TWI_SCL_M, NONE); OCELOT_P(7, UART, TWI_SCL_M, NONE); OCELOT_P(8, SI, TWI_SCL_M, IRQ0_OUT); OCELOT_P(9, SI, TWI_SCL_M, IRQ1_OUT); OCELOT_P(10, PTP2, TWI_SCL_M, SFP0); OCELOT_P(11, PTP3, TWI_SCL_M, SFP1); OCELOT_P(12, UART2, TWI_SCL_M, SFP2); OCELOT_P(13, UART2, TWI_SCL_M, SFP3); OCELOT_P(14, MIIM1, TWI_SCL_M, SFP4); OCELOT_P(15, MIIM1, TWI_SCL_M, SFP5); OCELOT_P(16, TWI, NONE, SI); OCELOT_P(17, TWI, TWI_SCL_M, SI); OCELOT_P(18, PTP0, TWI_SCL_M, NONE); OCELOT_P(19, PTP1, TWI_SCL_M, NONE); OCELOT_P(20, RECO_CLK0, TACHO, NONE); OCELOT_P(21, RECO_CLK1, PWM, NONE); #define OCELOT_PIN(n) { \ .number = n, \ .name = "GPIO_"#n, \ .drv_data = &ocelot_pin_##n \ } static const struct pinctrl_pin_desc ocelot_pins[] = { OCELOT_PIN(0), OCELOT_PIN(1), OCELOT_PIN(2), OCELOT_PIN(3), OCELOT_PIN(4), OCELOT_PIN(5), OCELOT_PIN(6), OCELOT_PIN(7), OCELOT_PIN(8), OCELOT_PIN(9), OCELOT_PIN(10), OCELOT_PIN(11), OCELOT_PIN(12), OCELOT_PIN(13), OCELOT_PIN(14), OCELOT_PIN(15), OCELOT_PIN(16), OCELOT_PIN(17), OCELOT_PIN(18), OCELOT_PIN(19), OCELOT_PIN(20), OCELOT_PIN(21), }; #define JAGUAR2_P(p, f0, f1) \ static struct ocelot_pin_caps jaguar2_pin_##p = { \ .pin = p, \ .functions = { \ FUNC_GPIO, FUNC_##f0, FUNC_##f1, FUNC_NONE \ }, \ } JAGUAR2_P(0, SG0, NONE); JAGUAR2_P(1, SG0, NONE); JAGUAR2_P(2, SG0, NONE); JAGUAR2_P(3, SG0, NONE); JAGUAR2_P(4, SG1, NONE); JAGUAR2_P(5, SG1, NONE); JAGUAR2_P(6, IRQ0_IN, IRQ0_OUT); JAGUAR2_P(7, IRQ1_IN, IRQ1_OUT); JAGUAR2_P(8, PTP0, NONE); JAGUAR2_P(9, PTP1, NONE); JAGUAR2_P(10, UART, NONE); JAGUAR2_P(11, UART, NONE); JAGUAR2_P(12, SG1, NONE); JAGUAR2_P(13, SG1, NONE); JAGUAR2_P(14, TWI, TWI_SCL_M); JAGUAR2_P(15, TWI, NONE); JAGUAR2_P(16, SI, TWI_SCL_M); JAGUAR2_P(17, SI, TWI_SCL_M); JAGUAR2_P(18, SI, TWI_SCL_M); JAGUAR2_P(19, PCI_WAKE, NONE); JAGUAR2_P(20, IRQ0_OUT, TWI_SCL_M); JAGUAR2_P(21, IRQ1_OUT, TWI_SCL_M); JAGUAR2_P(22, TACHO, NONE); JAGUAR2_P(23, PWM, NONE); JAGUAR2_P(24, UART2, NONE); JAGUAR2_P(25, UART2, SI); JAGUAR2_P(26, PTP2, SI); JAGUAR2_P(27, PTP3, SI); JAGUAR2_P(28, TWI2, SI); JAGUAR2_P(29, TWI2, SI); JAGUAR2_P(30, SG2, SI); JAGUAR2_P(31, SG2, SI); JAGUAR2_P(32, SG2, SI); JAGUAR2_P(33, SG2, SI); JAGUAR2_P(34, NONE, TWI_SCL_M); JAGUAR2_P(35, NONE, TWI_SCL_M); JAGUAR2_P(36, NONE, TWI_SCL_M); JAGUAR2_P(37, NONE, TWI_SCL_M); JAGUAR2_P(38, NONE, TWI_SCL_M); JAGUAR2_P(39, NONE, TWI_SCL_M); JAGUAR2_P(40, NONE, TWI_SCL_M); JAGUAR2_P(41, NONE, TWI_SCL_M); JAGUAR2_P(42, NONE, TWI_SCL_M); JAGUAR2_P(43, NONE, TWI_SCL_M); JAGUAR2_P(44, NONE, SFP8); JAGUAR2_P(45, NONE, SFP9); JAGUAR2_P(46, NONE, SFP10); JAGUAR2_P(47, NONE, SFP11); JAGUAR2_P(48, SFP0, NONE); JAGUAR2_P(49, SFP1, SI); JAGUAR2_P(50, SFP2, SI); JAGUAR2_P(51, SFP3, SI); JAGUAR2_P(52, SFP4, NONE); JAGUAR2_P(53, SFP5, NONE); JAGUAR2_P(54, SFP6, NONE); JAGUAR2_P(55, SFP7, NONE); JAGUAR2_P(56, MIIM1, SFP12); JAGUAR2_P(57, MIIM1, SFP13); JAGUAR2_P(58, MIIM2, SFP14); JAGUAR2_P(59, MIIM2, SFP15); JAGUAR2_P(60, NONE, NONE); JAGUAR2_P(61, NONE, NONE); JAGUAR2_P(62, NONE, NONE); JAGUAR2_P(63, NONE, NONE); #define JAGUAR2_PIN(n) { \ .number = n, \ .name = "GPIO_"#n, \ .drv_data = &jaguar2_pin_##n \ } static const struct pinctrl_pin_desc jaguar2_pins[] = { JAGUAR2_PIN(0), JAGUAR2_PIN(1), JAGUAR2_PIN(2), JAGUAR2_PIN(3), JAGUAR2_PIN(4), JAGUAR2_PIN(5), JAGUAR2_PIN(6), JAGUAR2_PIN(7), JAGUAR2_PIN(8), JAGUAR2_PIN(9), JAGUAR2_PIN(10), JAGUAR2_PIN(11), JAGUAR2_PIN(12), JAGUAR2_PIN(13), JAGUAR2_PIN(14), JAGUAR2_PIN(15), JAGUAR2_PIN(16), JAGUAR2_PIN(17), JAGUAR2_PIN(18), JAGUAR2_PIN(19), JAGUAR2_PIN(20), JAGUAR2_PIN(21), JAGUAR2_PIN(22), JAGUAR2_PIN(23), JAGUAR2_PIN(24), JAGUAR2_PIN(25), JAGUAR2_PIN(26), JAGUAR2_PIN(27), JAGUAR2_PIN(28), JAGUAR2_PIN(29), JAGUAR2_PIN(30), JAGUAR2_PIN(31), JAGUAR2_PIN(32), JAGUAR2_PIN(33), JAGUAR2_PIN(34), JAGUAR2_PIN(35), JAGUAR2_PIN(36), JAGUAR2_PIN(37), JAGUAR2_PIN(38), JAGUAR2_PIN(39), JAGUAR2_PIN(40), JAGUAR2_PIN(41), JAGUAR2_PIN(42), JAGUAR2_PIN(43), JAGUAR2_PIN(44), JAGUAR2_PIN(45), JAGUAR2_PIN(46), JAGUAR2_PIN(47), JAGUAR2_PIN(48), JAGUAR2_PIN(49), JAGUAR2_PIN(50), JAGUAR2_PIN(51), JAGUAR2_PIN(52), JAGUAR2_PIN(53), JAGUAR2_PIN(54), JAGUAR2_PIN(55), JAGUAR2_PIN(56), JAGUAR2_PIN(57), JAGUAR2_PIN(58), JAGUAR2_PIN(59), JAGUAR2_PIN(60), JAGUAR2_PIN(61), JAGUAR2_PIN(62), JAGUAR2_PIN(63), }; static int ocelot_get_functions_count(struct pinctrl_dev *pctldev) { return ARRAY_SIZE(ocelot_function_names); } static const char *ocelot_get_function_name(struct pinctrl_dev *pctldev, unsigned int function) { return ocelot_function_names[function]; } static int ocelot_get_function_groups(struct pinctrl_dev *pctldev, unsigned int function, const char *const **groups, unsigned *const num_groups) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); *groups = info->func[function].groups; *num_groups = info->func[function].ngroups; return 0; } static int ocelot_pin_function_idx(struct ocelot_pinctrl *info, unsigned int pin, unsigned int function) { struct ocelot_pin_caps *p = info->desc->pins[pin].drv_data; int i; for (i = 0; i < OCELOT_FUNC_PER_PIN; i++) { if (function == p->functions[i]) return i; } return -1; } #define REG_ALT(msb, info, p) (OCELOT_GPIO_ALT0 * (info)->stride + 4 * ((msb) + ((info)->stride * ((p) / 32)))) static int ocelot_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int selector, unsigned int group) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); struct ocelot_pin_caps *pin = info->desc->pins[group].drv_data; unsigned int p = pin->pin % 32; int f; f = ocelot_pin_function_idx(info, group, selector); if (f < 0) return -EINVAL; /* * f is encoded on two bits. * bit 0 of f goes in BIT(pin) of ALT[0], bit 1 of f goes in BIT(pin) of * ALT[1] * This is racy because both registers can't be updated at the same time * but it doesn't matter much for now. */ regmap_update_bits(info->map, REG_ALT(0, info, pin->pin), BIT(p), f << p); regmap_update_bits(info->map, REG_ALT(1, info, pin->pin), BIT(p), f << (p - 1)); return 0; } #define REG(r, info, p) ((r) * (info)->stride + (4 * ((p) / 32))) static int ocelot_gpio_set_direction(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned int pin, bool input) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); unsigned int p = pin % 32; regmap_update_bits(info->map, REG(OCELOT_GPIO_OE, info, pin), BIT(p), input ? 0 : BIT(p)); return 0; } static int ocelot_gpio_request_enable(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned int offset) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); unsigned int p = offset % 32; regmap_update_bits(info->map, REG_ALT(0, info, offset), BIT(p), 0); regmap_update_bits(info->map, REG_ALT(1, info, offset), BIT(p), 0); return 0; } static const struct pinmux_ops ocelot_pmx_ops = { .get_functions_count = ocelot_get_functions_count, .get_function_name = ocelot_get_function_name, .get_function_groups = ocelot_get_function_groups, .set_mux = ocelot_pinmux_set_mux, .gpio_set_direction = ocelot_gpio_set_direction, .gpio_request_enable = ocelot_gpio_request_enable, }; static int ocelot_pctl_get_groups_count(struct pinctrl_dev *pctldev) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); return info->desc->npins; } static const char *ocelot_pctl_get_group_name(struct pinctrl_dev *pctldev, unsigned int group) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); return info->desc->pins[group].name; } static int ocelot_pctl_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group, const unsigned int **pins, unsigned int *num_pins) { struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); *pins = &info->desc->pins[group].number; *num_pins = 1; return 0; } static const struct pinctrl_ops ocelot_pctl_ops = { .get_groups_count = ocelot_pctl_get_groups_count, .get_group_name = ocelot_pctl_get_group_name, .get_group_pins = ocelot_pctl_get_group_pins, .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, .dt_free_map = pinconf_generic_dt_free_map, }; static struct pinctrl_desc ocelot_desc = { .name = "ocelot-pinctrl", .pins = ocelot_pins, .npins = ARRAY_SIZE(ocelot_pins), .pctlops = &ocelot_pctl_ops, .pmxops = &ocelot_pmx_ops, .owner = THIS_MODULE, }; static struct pinctrl_desc jaguar2_desc = { .name = "jaguar2-pinctrl", .pins = jaguar2_pins, .npins = ARRAY_SIZE(jaguar2_pins), .pctlops = &ocelot_pctl_ops, .pmxops = &ocelot_pmx_ops, .owner = THIS_MODULE, }; static int ocelot_create_group_func_map(struct device *dev, struct ocelot_pinctrl *info) { int f, npins, i; u8 *pins = kcalloc(info->desc->npins, sizeof(u8), GFP_KERNEL); if (!pins) return -ENOMEM; for (f = 0; f < FUNC_MAX; f++) { for (npins = 0, i = 0; i < info->desc->npins; i++) { if (ocelot_pin_function_idx(info, i, f) >= 0) pins[npins++] = i; } if (!npins) continue; info->func[f].ngroups = npins; info->func[f].groups = devm_kcalloc(dev, npins, sizeof(char *), GFP_KERNEL); if (!info->func[f].groups) { kfree(pins); return -ENOMEM; } for (i = 0; i < npins; i++) info->func[f].groups[i] = info->desc->pins[pins[i]].name; } kfree(pins); return 0; } static int ocelot_pinctrl_register(struct platform_device *pdev, struct ocelot_pinctrl *info) { int ret; ret = ocelot_create_group_func_map(&pdev->dev, info); if (ret) { dev_err(&pdev->dev, "Unable to create group func map.\n"); return ret; } info->pctl = devm_pinctrl_register(&pdev->dev, info->desc, info); if (IS_ERR(info->pctl)) { dev_err(&pdev->dev, "Failed to register pinctrl\n"); return PTR_ERR(info->pctl); } return 0; } static int ocelot_gpio_get(struct gpio_chip *chip, unsigned int offset) { struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int val; regmap_read(info->map, REG(OCELOT_GPIO_IN, info, offset), &val); return !!(val & BIT(offset % 32)); } static void ocelot_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) { struct ocelot_pinctrl *info = gpiochip_get_data(chip); if (value) regmap_write(info->map, REG(OCELOT_GPIO_OUT_SET, info, offset), BIT(offset % 32)); else regmap_write(info->map, REG(OCELOT_GPIO_OUT_CLR, info, offset), BIT(offset % 32)); } static int ocelot_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) { struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int val; regmap_read(info->map, REG(OCELOT_GPIO_OE, info, offset), &val); return !(val & BIT(offset % 32)); } static int ocelot_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) { return pinctrl_gpio_direction_input(chip->base + offset); } static int ocelot_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, int value) { struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int pin = BIT(offset % 32); if (value) regmap_write(info->map, REG(OCELOT_GPIO_OUT_SET, info, offset), pin); else regmap_write(info->map, REG(OCELOT_GPIO_OUT_CLR, info, offset), pin); return pinctrl_gpio_direction_output(chip->base + offset); } static const struct gpio_chip ocelot_gpiolib_chip = { .request = gpiochip_generic_request, .free = gpiochip_generic_free, .set = ocelot_gpio_set, .get = ocelot_gpio_get, .get_direction = ocelot_gpio_get_direction, .direction_input = ocelot_gpio_direction_input, .direction_output = ocelot_gpio_direction_output, .owner = THIS_MODULE, }; static void ocelot_irq_mask(struct irq_data *data) { struct gpio_chip *chip = irq_data_get_irq_chip_data(data); struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int gpio = irqd_to_hwirq(data); regmap_update_bits(info->map, REG(OCELOT_GPIO_INTR_ENA, info, gpio), BIT(gpio % 32), 0); } static void ocelot_irq_unmask(struct irq_data *data) { struct gpio_chip *chip = irq_data_get_irq_chip_data(data); struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int gpio = irqd_to_hwirq(data); regmap_update_bits(info->map, REG(OCELOT_GPIO_INTR_ENA, info, gpio), BIT(gpio % 32), BIT(gpio % 32)); } static void ocelot_irq_ack(struct irq_data *data) { struct gpio_chip *chip = irq_data_get_irq_chip_data(data); struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int gpio = irqd_to_hwirq(data); regmap_write_bits(info->map, REG(OCELOT_GPIO_INTR, info, gpio), BIT(gpio % 32), BIT(gpio % 32)); } static int ocelot_irq_set_type(struct irq_data *data, unsigned int type); static struct irq_chip ocelot_eoi_irqchip = { .name = "gpio", .irq_mask = ocelot_irq_mask, .irq_eoi = ocelot_irq_ack, .irq_unmask = ocelot_irq_unmask, .flags = IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED, .irq_set_type = ocelot_irq_set_type, }; static struct irq_chip ocelot_irqchip = { .name = "gpio", .irq_mask = ocelot_irq_mask, .irq_ack = ocelot_irq_ack, .irq_unmask = ocelot_irq_unmask, .irq_set_type = ocelot_irq_set_type, }; static int ocelot_irq_set_type(struct irq_data *data, unsigned int type) { type &= IRQ_TYPE_SENSE_MASK; if (!(type & (IRQ_TYPE_EDGE_BOTH | IRQ_TYPE_LEVEL_HIGH))) return -EINVAL; if (type & IRQ_TYPE_LEVEL_HIGH) irq_set_chip_handler_name_locked(data, &ocelot_eoi_irqchip, handle_fasteoi_irq, NULL); if (type & IRQ_TYPE_EDGE_BOTH) irq_set_chip_handler_name_locked(data, &ocelot_irqchip, handle_edge_irq, NULL); return 0; } static void ocelot_irq_handler(struct irq_desc *desc) { struct irq_chip *parent_chip = irq_desc_get_chip(desc); struct gpio_chip *chip = irq_desc_get_handler_data(desc); struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int reg = 0, irq, i; unsigned long irqs; for (i = 0; i < info->stride; i++) { regmap_read(info->map, OCELOT_GPIO_INTR_IDENT + 4 * i, ®); if (!reg) continue; chained_irq_enter(parent_chip, desc); irqs = reg; for_each_set_bit(irq, &irqs, min(32U, info->desc->npins - 32 * i)) generic_handle_irq(irq_linear_revmap(chip->irq.domain, irq + 32 * i)); chained_irq_exit(parent_chip, desc); } } static int ocelot_gpiochip_register(struct platform_device *pdev, struct ocelot_pinctrl *info) { struct gpio_chip *gc; int ret, irq; info->gpio_chip = ocelot_gpiolib_chip; gc = &info->gpio_chip; gc->ngpio = info->desc->npins; gc->parent = &pdev->dev; gc->base = 0; gc->of_node = info->dev->of_node; gc->label = "ocelot-gpio"; ret = devm_gpiochip_add_data(&pdev->dev, gc, info); if (ret) return ret; irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (irq <= 0) return irq; ret = gpiochip_irqchip_add(gc, &ocelot_irqchip, 0, handle_edge_irq, IRQ_TYPE_NONE); if (ret) return ret; gpiochip_set_chained_irqchip(gc, &ocelot_irqchip, irq, ocelot_irq_handler); return 0; } static const struct of_device_id ocelot_pinctrl_of_match[] = { { .compatible = "mscc,ocelot-pinctrl", .data = &ocelot_desc }, { .compatible = "mscc,jaguar2-pinctrl", .data = &jaguar2_desc }, {}, }; static int ocelot_pinctrl_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct ocelot_pinctrl *info; void __iomem *base; int ret; struct regmap_config regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, }; info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; info->desc = (struct pinctrl_desc *)device_get_match_data(dev); base = devm_ioremap_resource(dev, platform_get_resource(pdev, IORESOURCE_MEM, 0)); if (IS_ERR(base)) { dev_err(dev, "Failed to ioremap registers\n"); return PTR_ERR(base); } info->stride = 1 + (info->desc->npins - 1) / 32; regmap_config.max_register = OCELOT_GPIO_SD_MAP * info->stride + 15 * 4; info->map = devm_regmap_init_mmio(dev, base, ®map_config); if (IS_ERR(info->map)) { dev_err(dev, "Failed to create regmap\n"); return PTR_ERR(info->map); } dev_set_drvdata(dev, info->map); info->dev = dev; ret = ocelot_pinctrl_register(pdev, info); if (ret) return ret; ret = ocelot_gpiochip_register(pdev, info); if (ret) return ret; return 0; } static struct platform_driver ocelot_pinctrl_driver = { .driver = { .name = "pinctrl-ocelot", .of_match_table = of_match_ptr(ocelot_pinctrl_of_match), .suppress_bind_attrs = true, }, .probe = ocelot_pinctrl_probe, }; builtin_platform_driver(ocelot_pinctrl_driver);
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