[PATCH 16/22] pinctrl: sunxi: Add A23 R_PIO controller support

Chen-Yu Tsai
2014-05-23T08:27:50Z

The A23 has a R_PIO pin controller, similar to the one found on the A31 SoC.
Add support for the pins controlled by the R_PIO controller.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
drivers/pinctrl/sunxi/Kconfig | 4 +
drivers/pinctrl/sunxi/Makefile | 1 +
drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c | 129 ++++++++++++++++++++++++++++
3 files changed, 134 insertions(+)
create mode 100644 drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c

diff --git a/drivers/pinctrl/sunxi/Kconfig b/drivers/pinctrl/sunxi/Kconfig
index 17a4281..3058d32 100644
--- a/drivers/pinctrl/sunxi/Kconfig
+++ b/drivers/pinctrl/sunxi/Kconfig
@@ -36,4 +36,8 @@ config PINCTRL_SUN8I_A23
def_bool PINCTRL_SUNXI || MACH_SUN8I
select PINCTRL_SUNXI_COMMON

+config PINCTRL_SUN8I_A23_R
+ def_bool PINCTRL_SUNXI || MACH_SUN8I
+ select PINCTRL_SUNXI_COMMON
+
endif
diff --git a/drivers/pinctrl/sunxi/Makefile b/drivers/pinctrl/sunxi/Makefile
index 850cd50..e797efb 100644
--- a/drivers/pinctrl/sunxi/Makefile
+++ b/drivers/pinctrl/sunxi/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_PINCTRL_SUN6I_A31) += pinctrl-sun6i-a31.o
obj-$(CONFIG_PINCTRL_SUN6I_A31_R) += pinctrl-sun6i-a31-r.o
obj-$(CONFIG_PINCTRL_SUN7I_A20) += pinctrl-sun7i-a20.o
obj-$(CONFIG_PINCTRL_SUN8I_A23) += pinctrl-sun8i-a23.o
+obj-$(CONFIG_PINCTRL_SUN8I_A23_R) += pinctrl-sun8i-a23-r.o
diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c
new file mode 100644
index 0000000..ae17888
--- /dev/null
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c
@@ -0,0 +1,129 @@
+/*
+ * Allwinner A23 SoCs special pins pinctrl driver.
+ *
+ * Copyright (C) 2014 Chen-Yu Tsai
+ * Chen-Yu Tsai <wens@csie.org>
+ *
+ * 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 sun8i_a23_r_pins[] = {
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x2, "s_rsb"), /* SCK */
+ SUNXI_FUNCTION(0x3, "s_twi")), /* SCK */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x2, "s_rsb"), /* SDA */
+ SUNXI_FUNCTION(0x3, "s_twi")), /* 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(0x3, "s_jtag")), /* MS */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x3, "s_jtag")), /* CK */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x3, "s_jtag")), /* DO */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x3, "s_jtag")), /* DI */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x2, "s_twi")), /* SCK */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 9),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x2, "s_twi")), /* SDA */
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 10),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out"),
+ SUNXI_FUNCTION(0x2, "s_pwm")),
+ SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 11),
+ SUNXI_FUNCTION(0x0, "gpio_in"),
+ SUNXI_FUNCTION(0x1, "gpio_out")),
+};
+
+static const struct sunxi_pinctrl_desc sun8i_a23_r_pinctrl_data = {
+ .pins = sun8i_a23_r_pins,
+ .npins = ARRAY_SIZE(sun8i_a23_r_pins),
+ .pin_base = PL_BASE,
+};
+
+static int sun8i_a23_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,
+ &sun8i_a23_r_pinctrl_data);
+
+ if (ret)
+ reset_control_assert(rstc);
+
+ return ret;
+}
+
+static struct of_device_id sun8i_a23_r_pinctrl_match[] = {
+ { .compatible = "allwinner,sun8i-a23-r-pinctrl", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, sun8i_a23_r_pinctrl_match);
+
+static struct platform_driver sun8i_a23_r_pinctrl_driver = {
+ .probe = sun8i_a23_r_pinctrl_probe,
+ .driver = {
+ .name = "sun8i-a23-r-pinctrl",
+ .owner = THIS_MODULE,
+ .of_match_table = sun8i_a23_r_pinctrl_match,
+ },
+};
+module_platform_driver(sun8i_a23_r_pinctrl_driver);
+
+MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com");
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
+MODULE_DESCRIPTION("Allwinner A23 R_PIO pinctrl driver");
+MODULE_LICENSE("GPL");
--
2.0.0.rc2