Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
drivers/pinctrl/Kconfig | 5 ++
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-vf610.c | 167 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 173 insertions(+)
create mode 100644 drivers/pinctrl/pinctrl-vf610.c
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 5c69928..12fff4f 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -77,4 +77,9 @@ config PINCTRL_TEGRA_XUSB
source drivers/pinctrl/mvebu/Kconfig
+config PINCTRL_VF610
+ bool
+ default y if ARCH_VF610
+ help
+ Pinmux controller found on Vybrid VF610 family of SoCs
endif
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index af9b30d..9450dbb 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -9,5 +9,6 @@ obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o
obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o
obj-$(CONFIG_PINCTRL_TEGRA_XUSB) += pinctrl-tegra-xusb.o
+obj-$(CONFIG_PINCTRL_VF610) += pinctrl-vf610.o
obj-$(CONFIG_ARCH_MVEBU) += mvebu/
diff --git a/drivers/pinctrl/pinctrl-vf610.c b/drivers/pinctrl/pinctrl-vf610.c
new file mode 100644
index 0000000..b479bf2
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-vf610.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2016 Zodiac Inflight Innovation
+ * Author: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+#include <of.h>
+#include <pinctrl.h>
+#include <malloc.h>
+#include <gpio.h>
+
+enum {
+ PINCTRL_VF610_MUX_LINE_SIZE = 20,
+ PINCTRL_VF610_MUX_SHIFT = 20,
+
+ PINCTRL_VF610_IBE = 1 << 0,
+ PINCTRL_VF610_OBE = 1 << 1,
+ PINCTRL_VF610_xBE = 0b11,
+};
+
+struct pinctrl_vf610 {
+ void __iomem *base;
+ struct pinctrl_device pinctrl;
+};
+
+static int pinctrl_vf610_set_state(struct pinctrl_device *pdev,
+ struct device_node *np)
+{
+ const __be32 *list;
+ int npins, size, i;
+
+ struct pinctrl_vf610 *iomux =
+ container_of(pdev, struct pinctrl_vf610, pinctrl);
+
+ list = of_get_property(np, "fsl,pins", &size);
+ if (!list)
+ return -EINVAL;
+
+ if (!size || size % PINCTRL_VF610_MUX_LINE_SIZE) {
+ dev_err(pdev->dev, "Invalid fsl,pins property in %s\n",
+ np->full_name);
+ return -EINVAL;
+ }
+
+ npins = size / PINCTRL_VF610_MUX_LINE_SIZE;
+
+ for (i = 0; i < npins; i++) {
+ u32 mux_reg = be32_to_cpu(*list++);
+ u32 input_reg = be32_to_cpu(*list++);
+ u32 mux_val = be32_to_cpu(*list++);
+ u32 input_val = be32_to_cpu(*list++);
+ u32 conf_val = be32_to_cpu(*list++);
+
+ writel(mux_val << PINCTRL_VF610_MUX_SHIFT | conf_val,
+ iomux->base + mux_reg);
+
+ if (input_reg)
+ writel(input_val, iomux->base + input_reg);
+ }
+
+ return 0;
+}
+
+static int pinctrl_vf610_set_direction(struct pinctrl_device *pdev,
+ unsigned int pin, bool input)
+{
+ u32 pad_cr;
+ const u32 off = pin * sizeof(u32);
+ struct pinctrl_vf610 *iomux =
+ container_of(pdev, struct pinctrl_vf610, pinctrl);
+
+ pad_cr = readl(iomux->base + off);
+
+ if (input) {
+ pad_cr |= PINCTRL_VF610_IBE;
+ pad_cr &= ~PINCTRL_VF610_OBE;
+ } else {
+ pad_cr &= ~PINCTRL_VF610_IBE;
+ pad_cr |= PINCTRL_VF610_OBE;
+ }
+
+ writel(pad_cr, iomux->base + off);
+
+ return 0;
+}
+
+static int pinctrl_vf610_get_direction(struct pinctrl_device *pdev,
+ unsigned int pin)
+{
+ const u32 off = pin * sizeof(u32);
+ struct pinctrl_vf610 *iomux =
+ container_of(pdev, struct pinctrl_vf610, pinctrl);
+
+ const u32 pad_cr = readl(iomux->base + off);
+
+ switch (pad_cr & PINCTRL_VF610_xBE) {
+ case PINCTRL_VF610_IBE:
+ return GPIOF_DIR_IN;
+ case PINCTRL_VF610_OBE:
+ return GPIOF_DIR_OUT;
+ default:
+ return -EINVAL;
+ }
+}
+
+static struct pinctrl_ops pinctrl_vf610_ops = {
+ .set_state = pinctrl_vf610_set_state,
+ .set_direction = pinctrl_vf610_set_direction,
+ .get_direction = pinctrl_vf610_get_direction,
+};
+
+static int pinctrl_vf610_probe(struct device_d *dev)
+{
+ int ret;
+ struct resource *io;
+ struct pinctrl_vf610 *iomux;
+
+ iomux = xzalloc(sizeof(*iomux));
+
+ io = dev_request_mem_resource(dev, 0);
+ if (IS_ERR(io))
+ return PTR_ERR(io);
+
+ iomux->base = IOMEM(io->start);
+ iomux->pinctrl.dev = dev;
+ iomux->pinctrl.ops = &pinctrl_vf610_ops;
+ iomux->pinctrl.base = 0;
+ iomux->pinctrl.npins = ARCH_NR_GPIOS;
+
+ ret = pinctrl_register(&iomux->pinctrl);
+ if (ret)
+ free(iomux);
+
+ return ret;
+}
+
+static __maybe_unused struct of_device_id pinctrl_vf610_dt_ids[] = {
+ { .compatible = "fsl,vf610-iomuxc", },
+ { /* sentinel */ }
+};
+
+static struct driver_d pinctrl_vf610_driver = {
+ .name = "vf610-pinctrl",
+ .probe = pinctrl_vf610_probe,
+ .of_compatible = DRV_OF_COMPAT(pinctrl_vf610_dt_ids),
+};
+
+static int pinctrl_vf610_init(void)
+{
+ return platform_driver_register(&pinctrl_vf610_driver);
+}
+postcore_initcall(pinctrl_vf610_init);
--
2.5.5
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