Chen-Yu Tsai | d22bf40 | 2014-06-17 22:52:52 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Allwinner A23 SoCs special pins pinctrl driver. |
| 3 | * |
| 4 | * Copyright (C) 2014 Chen-Yu Tsai |
| 5 | * Chen-Yu Tsai <wens@csie.org> |
| 6 | * |
| 7 | * Copyright (C) 2014 Boris Brezillon |
| 8 | * Boris Brezillon <boris.brezillon@free-electrons.com> |
| 9 | * |
| 10 | * Copyright (C) 2014 Maxime Ripard |
| 11 | * Maxime Ripard <maxime.ripard@free-electrons.com> |
| 12 | * |
| 13 | * This file is licensed under the terms of the GNU General Public |
| 14 | * License version 2. This program is licensed "as is" without any |
| 15 | * warranty of any kind, whether express or implied. |
| 16 | */ |
| 17 | |
Paul Gortmaker | 0c8c6ba | 2016-10-29 20:00:30 -0400 | [diff] [blame] | 18 | #include <linux/init.h> |
Chen-Yu Tsai | d22bf40 | 2014-06-17 22:52:52 +0800 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/of.h> |
| 21 | #include <linux/of_device.h> |
| 22 | #include <linux/pinctrl/pinctrl.h> |
| 23 | #include <linux/reset.h> |
| 24 | |
| 25 | #include "pinctrl-sunxi.h" |
| 26 | |
| 27 | static const struct sunxi_desc_pin sun8i_a23_r_pins[] = { |
| 28 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0), |
| 29 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 30 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 31 | SUNXI_FUNCTION(0x2, "s_rsb"), /* SCK */ |
| 32 | SUNXI_FUNCTION(0x3, "s_twi"), /* SCK */ |
| 33 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 0)), /* PL_EINT0 */ |
| 34 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1), |
| 35 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 36 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 37 | SUNXI_FUNCTION(0x2, "s_rsb"), /* SDA */ |
| 38 | SUNXI_FUNCTION(0x3, "s_twi"), /* SDA */ |
| 39 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 1)), /* PL_EINT1 */ |
| 40 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2), |
| 41 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 42 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 43 | SUNXI_FUNCTION(0x2, "s_uart"), /* TX */ |
| 44 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 2)), /* PL_EINT2 */ |
| 45 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 3), |
| 46 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 47 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 48 | SUNXI_FUNCTION(0x2, "s_uart"), /* RX */ |
| 49 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 3)), /* PL_EINT3 */ |
| 50 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4), |
| 51 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 52 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 53 | SUNXI_FUNCTION(0x3, "s_jtag"), /* MS */ |
| 54 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 4)), /* PL_EINT4 */ |
| 55 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5), |
| 56 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 57 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 58 | SUNXI_FUNCTION(0x3, "s_jtag"), /* CK */ |
| 59 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 5)), /* PL_EINT5 */ |
| 60 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6), |
| 61 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 62 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 63 | SUNXI_FUNCTION(0x3, "s_jtag"), /* DO */ |
| 64 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 6)), /* PL_EINT6 */ |
| 65 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7), |
| 66 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 67 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 68 | SUNXI_FUNCTION(0x3, "s_jtag"), /* DI */ |
| 69 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 7)), /* PL_EINT7 */ |
| 70 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8), |
| 71 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 72 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 73 | SUNXI_FUNCTION(0x2, "s_twi"), /* SCK */ |
| 74 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 8)), /* PL_EINT8 */ |
| 75 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 9), |
| 76 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 77 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 78 | SUNXI_FUNCTION(0x2, "s_twi"), /* SDA */ |
| 79 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 9)), /* PL_EINT9 */ |
| 80 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 10), |
| 81 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 82 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 83 | SUNXI_FUNCTION(0x2, "s_pwm"), |
| 84 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 10)), /* PL_EINT10 */ |
| 85 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 11), |
| 86 | SUNXI_FUNCTION(0x0, "gpio_in"), |
| 87 | SUNXI_FUNCTION(0x1, "gpio_out"), |
| 88 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 11)), /* PL_EINT11 */ |
| 89 | }; |
| 90 | |
| 91 | static const struct sunxi_pinctrl_desc sun8i_a23_r_pinctrl_data = { |
| 92 | .pins = sun8i_a23_r_pins, |
| 93 | .npins = ARRAY_SIZE(sun8i_a23_r_pins), |
| 94 | .pin_base = PL_BASE, |
| 95 | .irq_banks = 1, |
| 96 | }; |
| 97 | |
| 98 | static int sun8i_a23_r_pinctrl_probe(struct platform_device *pdev) |
| 99 | { |
| 100 | struct reset_control *rstc; |
| 101 | int ret; |
| 102 | |
| 103 | rstc = devm_reset_control_get(&pdev->dev, NULL); |
| 104 | if (IS_ERR(rstc)) { |
| 105 | dev_err(&pdev->dev, "Reset controller missing\n"); |
| 106 | return PTR_ERR(rstc); |
| 107 | } |
| 108 | |
| 109 | ret = reset_control_deassert(rstc); |
| 110 | if (ret) |
| 111 | return ret; |
| 112 | |
| 113 | ret = sunxi_pinctrl_init(pdev, |
| 114 | &sun8i_a23_r_pinctrl_data); |
| 115 | |
| 116 | if (ret) |
| 117 | reset_control_assert(rstc); |
| 118 | |
| 119 | return ret; |
| 120 | } |
| 121 | |
Fabian Frederick | baa9946e | 2015-03-16 20:59:09 +0100 | [diff] [blame] | 122 | static const struct of_device_id sun8i_a23_r_pinctrl_match[] = { |
Chen-Yu Tsai | d22bf40 | 2014-06-17 22:52:52 +0800 | [diff] [blame] | 123 | { .compatible = "allwinner,sun8i-a23-r-pinctrl", }, |
| 124 | {} |
| 125 | }; |
Chen-Yu Tsai | d22bf40 | 2014-06-17 22:52:52 +0800 | [diff] [blame] | 126 | |
| 127 | static struct platform_driver sun8i_a23_r_pinctrl_driver = { |
| 128 | .probe = sun8i_a23_r_pinctrl_probe, |
| 129 | .driver = { |
| 130 | .name = "sun8i-a23-r-pinctrl", |
Chen-Yu Tsai | d22bf40 | 2014-06-17 22:52:52 +0800 | [diff] [blame] | 131 | .of_match_table = sun8i_a23_r_pinctrl_match, |
| 132 | }, |
| 133 | }; |
Paul Gortmaker | 0c8c6ba | 2016-10-29 20:00:30 -0400 | [diff] [blame] | 134 | builtin_platform_driver(sun8i_a23_r_pinctrl_driver); |