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drivers/pinctrl/pinctrl-ocelot.c
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// 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> |
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#include <linux/of_irq.h> |
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#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 |
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#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, |
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FUNC_MIIM2, |
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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, |
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FUNC_SFP6, FUNC_SFP7, FUNC_SFP8, FUNC_SFP9, FUNC_SFP10, FUNC_SFP11, FUNC_SFP12, FUNC_SFP13, FUNC_SFP14, FUNC_SFP15, |
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FUNC_SG0, |
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FUNC_SG1, FUNC_SG2, |
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FUNC_SI, FUNC_TACHO, FUNC_TWI, |
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FUNC_TWI2, |
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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", |
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[FUNC_MIIM2] = "miim2", |
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[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", |
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[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", |
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[FUNC_SG0] = "sg0", |
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[FUNC_SG1] = "sg1", [FUNC_SG2] = "sg2", |
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[FUNC_SI] = "si", [FUNC_TACHO] = "tacho", [FUNC_TWI] = "twi", |
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[FUNC_TWI2] = "twi2", |
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[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; |
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struct pinctrl_desc *desc; |
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struct ocelot_pmx_func func[FUNC_MAX]; |
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u8 stride; |
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}; #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); |
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OCELOT_P(4, IRQ0_IN, IRQ0_OUT, TWI_SCL_M); |
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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), }; |
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#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), }; |
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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; } |
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static int ocelot_pin_function_idx(struct ocelot_pinctrl *info, unsigned int pin, unsigned int function) |
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{ |
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struct ocelot_pin_caps *p = info->desc->pins[pin].drv_data; |
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int i; for (i = 0; i < OCELOT_FUNC_PER_PIN; i++) { if (function == p->functions[i]) return i; } return -1; } |
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#define REG_ALT(msb, info, p) (OCELOT_GPIO_ALT0 * (info)->stride + 4 * ((msb) + ((info)->stride * ((p) / 32)))) |
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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); |
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struct ocelot_pin_caps *pin = info->desc->pins[group].drv_data; unsigned int p = pin->pin % 32; |
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int f; |
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f = ocelot_pin_function_idx(info, group, selector); |
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if (f < 0) return -EINVAL; /* * f is encoded on two bits. |
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* bit 0 of f goes in BIT(pin) of ALT[0], bit 1 of f goes in BIT(pin) of * ALT[1] |
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* This is racy because both registers can't be updated at the same time * but it doesn't matter much for now. */ |
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regmap_update_bits(info->map, REG_ALT(0, info, pin->pin), |
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BIT(p), f << p); |
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regmap_update_bits(info->map, REG_ALT(1, info, pin->pin), |
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BIT(p), f << (p - 1)); |
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return 0; } |
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#define REG(r, info, p) ((r) * (info)->stride + (4 * ((p) / 32))) |
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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); |
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unsigned int p = pin % 32; |
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regmap_update_bits(info->map, REG(OCELOT_GPIO_OE, info, pin), BIT(p), |
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input ? 0 : BIT(p)); |
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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); |
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unsigned int p = offset % 32; |
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regmap_update_bits(info->map, REG_ALT(0, info, offset), |
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BIT(p), 0); |
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regmap_update_bits(info->map, REG_ALT(1, info, offset), |
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BIT(p), 0); |
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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) { |
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struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); return info->desc->npins; |
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} static const char *ocelot_pctl_get_group_name(struct pinctrl_dev *pctldev, unsigned int group) { |
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struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); return info->desc->pins[group].name; |
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} static int ocelot_pctl_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group, const unsigned int **pins, unsigned int *num_pins) { |
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struct ocelot_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); *pins = &info->desc->pins[group].number; |
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*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, }; |
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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, }; |
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static int ocelot_create_group_func_map(struct device *dev, struct ocelot_pinctrl *info) { |
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int f, npins, i; |
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u8 *pins = kcalloc(info->desc->npins, sizeof(u8), GFP_KERNEL); if (!pins) return -ENOMEM; |
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for (f = 0; f < FUNC_MAX; f++) { |
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for (npins = 0, i = 0; i < info->desc->npins; i++) { if (ocelot_pin_function_idx(info, i, f) >= 0) |
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pins[npins++] = i; } |
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if (!npins) continue; |
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info->func[f].ngroups = npins; |
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info->func[f].groups = devm_kcalloc(dev, npins, sizeof(char *), GFP_KERNEL); if (!info->func[f].groups) { kfree(pins); |
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return -ENOMEM; |
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} |
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for (i = 0; i < npins; i++) |
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info->func[f].groups[i] = info->desc->pins[pins[i]].name; |
ce8dc0943 pinctrl: Add Micr... |
537 |
} |
da801ab56 pinctrl: ocelot: ... |
538 |
kfree(pins); |
ce8dc0943 pinctrl: Add Micr... |
539 540 541 542 543 544 545 546 547 548 549 550 551 552 |
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. "); return ret; } |
da801ab56 pinctrl: ocelot: ... |
553 |
info->pctl = devm_pinctrl_register(&pdev->dev, info->desc, info); |
ce8dc0943 pinctrl: Add Micr... |
554 555 556 557 558 559 560 561 562 563 564 565 566 |
if (IS_ERR(info->pctl)) { dev_err(&pdev->dev, "Failed to register pinctrl "); 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; |
da801ab56 pinctrl: ocelot: ... |
567 |
regmap_read(info->map, REG(OCELOT_GPIO_IN, info, offset), &val); |
ce8dc0943 pinctrl: Add Micr... |
568 |
|
da801ab56 pinctrl: ocelot: ... |
569 |
return !!(val & BIT(offset % 32)); |
ce8dc0943 pinctrl: Add Micr... |
570 571 572 573 574 575 576 577 |
} static void ocelot_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) { struct ocelot_pinctrl *info = gpiochip_get_data(chip); if (value) |
da801ab56 pinctrl: ocelot: ... |
578 579 |
regmap_write(info->map, REG(OCELOT_GPIO_OUT_SET, info, offset), BIT(offset % 32)); |
ce8dc0943 pinctrl: Add Micr... |
580 |
else |
da801ab56 pinctrl: ocelot: ... |
581 582 |
regmap_write(info->map, REG(OCELOT_GPIO_OUT_CLR, info, offset), BIT(offset % 32)); |
ce8dc0943 pinctrl: Add Micr... |
583 584 585 586 587 588 589 |
} static int ocelot_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) { struct ocelot_pinctrl *info = gpiochip_get_data(chip); unsigned int val; |
da801ab56 pinctrl: ocelot: ... |
590 |
regmap_read(info->map, REG(OCELOT_GPIO_OE, info, offset), &val); |
ce8dc0943 pinctrl: Add Micr... |
591 |
|
da801ab56 pinctrl: ocelot: ... |
592 |
return !(val & BIT(offset % 32)); |
ce8dc0943 pinctrl: Add Micr... |
593 594 595 596 597 598 599 600 601 602 603 604 |
} 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); |
da801ab56 pinctrl: ocelot: ... |
605 |
unsigned int pin = BIT(offset % 32); |
ce8dc0943 pinctrl: Add Micr... |
606 607 |
if (value) |
da801ab56 pinctrl: ocelot: ... |
608 609 |
regmap_write(info->map, REG(OCELOT_GPIO_OUT_SET, info, offset), pin); |
ce8dc0943 pinctrl: Add Micr... |
610 |
else |
da801ab56 pinctrl: ocelot: ... |
611 612 |
regmap_write(info->map, REG(OCELOT_GPIO_OUT_CLR, info, offset), pin); |
ce8dc0943 pinctrl: Add Micr... |
613 614 615 616 617 618 619 620 621 622 623 624 625 626 |
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, }; |
be36abb71 pinctrl: ocelot: ... |
627 628 629 630 631 |
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); |
da801ab56 pinctrl: ocelot: ... |
632 633 |
regmap_update_bits(info->map, REG(OCELOT_GPIO_INTR_ENA, info, gpio), BIT(gpio % 32), 0); |
be36abb71 pinctrl: ocelot: ... |
634 635 636 637 638 639 640 |
} 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); |
da801ab56 pinctrl: ocelot: ... |
641 642 |
regmap_update_bits(info->map, REG(OCELOT_GPIO_INTR_ENA, info, gpio), BIT(gpio % 32), BIT(gpio % 32)); |
be36abb71 pinctrl: ocelot: ... |
643 644 645 646 647 648 649 |
} 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); |
da801ab56 pinctrl: ocelot: ... |
650 651 |
regmap_write_bits(info->map, REG(OCELOT_GPIO_INTR, info, gpio), BIT(gpio % 32), BIT(gpio % 32)); |
be36abb71 pinctrl: ocelot: ... |
652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 |
} 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); |
14c5e25d3 pinctrl: ocelot: ... |
695 |
unsigned int id_reg = OCELOT_GPIO_INTR_IDENT * info->stride; |
da801ab56 pinctrl: ocelot: ... |
696 |
unsigned int reg = 0, irq, i; |
be36abb71 pinctrl: ocelot: ... |
697 |
unsigned long irqs; |
da801ab56 pinctrl: ocelot: ... |
698 |
for (i = 0; i < info->stride; i++) { |
14c5e25d3 pinctrl: ocelot: ... |
699 |
regmap_read(info->map, id_reg + 4 * i, ®); |
da801ab56 pinctrl: ocelot: ... |
700 701 |
if (!reg) continue; |
be36abb71 pinctrl: ocelot: ... |
702 |
|
da801ab56 pinctrl: ocelot: ... |
703 |
chained_irq_enter(parent_chip, desc); |
be36abb71 pinctrl: ocelot: ... |
704 |
|
da801ab56 pinctrl: ocelot: ... |
705 |
irqs = reg; |
be36abb71 pinctrl: ocelot: ... |
706 |
|
da801ab56 pinctrl: ocelot: ... |
707 708 709 710 |
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)); |
be36abb71 pinctrl: ocelot: ... |
711 |
|
da801ab56 pinctrl: ocelot: ... |
712 713 |
chained_irq_exit(parent_chip, desc); } |
be36abb71 pinctrl: ocelot: ... |
714 |
} |
ce8dc0943 pinctrl: Add Micr... |
715 716 717 718 |
static int ocelot_gpiochip_register(struct platform_device *pdev, struct ocelot_pinctrl *info) { struct gpio_chip *gc; |
be36abb71 pinctrl: ocelot: ... |
719 |
int ret, irq; |
ce8dc0943 pinctrl: Add Micr... |
720 721 722 723 |
info->gpio_chip = ocelot_gpiolib_chip; gc = &info->gpio_chip; |
da801ab56 pinctrl: ocelot: ... |
724 |
gc->ngpio = info->desc->npins; |
ce8dc0943 pinctrl: Add Micr... |
725 726 727 728 729 730 731 732 |
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; |
be36abb71 pinctrl: ocelot: ... |
733 734 735 736 737 738 739 740 741 742 743 |
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); |
ce8dc0943 pinctrl: Add Micr... |
744 745 746 |
return 0; } |
ce8dc0943 pinctrl: Add Micr... |
747 |
static const struct of_device_id ocelot_pinctrl_of_match[] = { |
da801ab56 pinctrl: ocelot: ... |
748 749 |
{ .compatible = "mscc,ocelot-pinctrl", .data = &ocelot_desc }, { .compatible = "mscc,jaguar2-pinctrl", .data = &jaguar2_desc }, |
ce8dc0943 pinctrl: Add Micr... |
750 751 |
{}, }; |
ce3e7f0ee pinctrl: ocelot: ... |
752 |
static int ocelot_pinctrl_probe(struct platform_device *pdev) |
ce8dc0943 pinctrl: Add Micr... |
753 754 755 756 757 |
{ struct device *dev = &pdev->dev; struct ocelot_pinctrl *info; void __iomem *base; int ret; |
da801ab56 pinctrl: ocelot: ... |
758 759 760 761 762 |
struct regmap_config regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, }; |
ce8dc0943 pinctrl: Add Micr... |
763 764 765 766 |
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; |
da801ab56 pinctrl: ocelot: ... |
767 |
info->desc = (struct pinctrl_desc *)device_get_match_data(dev); |
ce8dc0943 pinctrl: Add Micr... |
768 769 770 771 772 773 774 |
base = devm_ioremap_resource(dev, platform_get_resource(pdev, IORESOURCE_MEM, 0)); if (IS_ERR(base)) { dev_err(dev, "Failed to ioremap registers "); return PTR_ERR(base); } |
da801ab56 pinctrl: ocelot: ... |
775 776 777 778 |
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); |
ce8dc0943 pinctrl: Add Micr... |
779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 |
if (IS_ERR(info->map)) { dev_err(dev, "Failed to create regmap "); 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); |