diff options
Diffstat (limited to 'drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c new file mode 100644 index 00000000000..8fcba48e0a4 --- /dev/null +++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c @@ -0,0 +1,141 @@ +/* + * Allwinner A31 SoCs special pins pinctrl driver. + * + * Copyright (C) 2014 Boris Brezillon + * Boris Brezillon <boris.brezillon@free-electrons.com> + * + * Copyright (C) 2014 Maxime Ripard + * Maxime Ripard <maxime.ripard@free-electrons.com> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/reset.h> + +#include "pinctrl-sunxi.h" + +static const struct sunxi_desc_pin sun6i_a31_r_pins[] = { + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x2, "s_twi"), /* SCK */ + SUNXI_FUNCTION(0x3, "s_p2wi")), /* SCK */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x2, "s_twi"), /* SDA */ + SUNXI_FUNCTION(0x3, "s_p2wi")), /* SDA */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x2, "s_uart")), /* TX */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 3), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x2, "s_uart")), /* RX */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x2, "s_ir")), /* RX */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x3, "s_jtag")), /* MS */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x3, "s_jtag")), /* CK */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x3, "s_jtag")), /* DO */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x3, "s_jtag")), /* DI */ + /* Hole */ + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 0), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 1), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 2), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x3, "1wire")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 3), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 4), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 5), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 6), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out")), + SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 7), + SUNXI_FUNCTION(0x0, "gpio_in"), + SUNXI_FUNCTION(0x1, "gpio_out"), + SUNXI_FUNCTION(0x3, "rtc")), /* CLKO */ +}; + +static const struct sunxi_pinctrl_desc sun6i_a31_r_pinctrl_data = { + .pins = sun6i_a31_r_pins, + .npins = ARRAY_SIZE(sun6i_a31_r_pins), + .pin_base = PL_BASE, +}; + +static int sun6i_a31_r_pinctrl_probe(struct platform_device *pdev) +{ + struct reset_control *rstc; + int ret; + + rstc = devm_reset_control_get(&pdev->dev, NULL); + if (IS_ERR(rstc)) { + dev_err(&pdev->dev, "Reset controller missing\n"); + return PTR_ERR(rstc); + } + + ret = reset_control_deassert(rstc); + if (ret) + return ret; + + ret = sunxi_pinctrl_init(pdev, + &sun6i_a31_r_pinctrl_data); + + if (ret) + reset_control_assert(rstc); + + return ret; +} + +static struct of_device_id sun6i_a31_r_pinctrl_match[] = { + { .compatible = "allwinner,sun6i-a31-r-pinctrl", }, + {} +}; +MODULE_DEVICE_TABLE(of, sun6i_a31_r_pinctrl_match); + +static struct platform_driver sun6i_a31_r_pinctrl_driver = { + .probe = sun6i_a31_r_pinctrl_probe, + .driver = { + .name = "sun6i-a31-r-pinctrl", + .owner = THIS_MODULE, + .of_match_table = sun6i_a31_r_pinctrl_match, + }, +}; +module_platform_driver(sun6i_a31_r_pinctrl_driver); + +MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com"); +MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com"); +MODULE_DESCRIPTION("Allwinner A31 R_PIO pinctrl driver"); +MODULE_LICENSE("GPL"); |