Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc device tree conversions (part 2) from Olof Johansson:
 "These continue the device tree work from part 1, this set is for the
  tegra, mxs and imx platforms, all of which have dependencies on clock
  or pinctrl changes submitted earlier."

Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
  ARM: dt: tegra: invert status=disable vs status=okay
  ARM: dt: tegra: consistent basic property ordering
  ARM: dt: tegra: sort nodes based on bus order
  ARM: dt: tegra: remove duplicate device_type property
  ARM: dt: tegra: consistenly use lower-case for hex constants
  ARM: dt: tegra: format regs properties consistently
  ARM: dt: tegra: gpio comment cleanup
  ARM: dt: tegra: remove unnecessary unit addresses
  ARM: dt: tegra: whitespace cleanup
  ARM: dt: tegra cardhu: fix typo in SDHCI node name
  ARM: dt: tegra: cardhu: register core regulator tps62361
  ARM: dt: tegra30.dtsi: Add SMMU node
  ARM: dt: tegra20.dtsi: Add GART node
  ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra: Add device tree support for AHB
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ...

1 files changed, 94 insertions, 62 deletions

diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c
index b4136501abd..39e49566996 100644
--- a/drivers/gpio/gpio-mxs.c
+++ b/drivers/gpio/gpio-mxs.c
@@ -25,23 +25,25 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/basic_mmio_gpio.h>
 #include <linux/module.h>
-#include <mach/mxs.h>
 
 #define MXS_SET         0x4
 #define MXS_CLR         0x8
 
-#define PINCTRL_DOUT(n)         ((cpu_is_mx23() ? 0x0500 : 0x0700) + (n) * 0x10)
-#define PINCTRL_DIN(n)          ((cpu_is_mx23() ? 0x0600 : 0x0900) + (n) * 0x10)
-#define PINCTRL_DOE(n)          ((cpu_is_mx23() ? 0x0700 : 0x0b00) + (n) * 0x10)
-#define PINCTRL_PIN2IRQ(n)      ((cpu_is_mx23() ? 0x0800 : 0x1000) + (n) * 0x10)
-#define PINCTRL_IRQEN(n)        ((cpu_is_mx23() ? 0x0900 : 0x1100) + (n) * 0x10)
-#define PINCTRL_IRQLEV(n)       ((cpu_is_mx23() ? 0x0a00 : 0x1200) + (n) * 0x10)
-#define PINCTRL_IRQPOL(n)       ((cpu_is_mx23() ? 0x0b00 : 0x1300) + (n) * 0x10)
-#define PINCTRL_IRQSTAT(n)      ((cpu_is_mx23() ? 0x0c00 : 0x1400) + (n) * 0x10)
+#define PINCTRL_DOUT(p)         ((is_imx23_gpio(p) ? 0x0500 : 0x0700) + (p->id) * 0x10)
+#define PINCTRL_DIN(p)          ((is_imx23_gpio(p) ? 0x0600 : 0x0900) + (p->id) * 0x10)
+#define PINCTRL_DOE(p)          ((is_imx23_gpio(p) ? 0x0700 : 0x0b00) + (p->id) * 0x10)
+#define PINCTRL_PIN2IRQ(p)      ((is_imx23_gpio(p) ? 0x0800 : 0x1000) + (p->id) * 0x10)
+#define PINCTRL_IRQEN(p)        ((is_imx23_gpio(p) ? 0x0900 : 0x1100) + (p->id) * 0x10)
+#define PINCTRL_IRQLEV(p)       ((is_imx23_gpio(p) ? 0x0a00 : 0x1200) + (p->id) * 0x10)
+#define PINCTRL_IRQPOL(p)       ((is_imx23_gpio(p) ? 0x0b00 : 0x1300) + (p->id) * 0x10)
+#define PINCTRL_IRQSTAT(p)      ((is_imx23_gpio(p) ? 0x0c00 : 0x1400) + (p->id) * 0x10)
 
 #define GPIO_INT_FALL_EDGE      0x0
 #define GPIO_INT_LOW_LEV        0x1
@@ -52,14 +54,30 @@
 
 #define irq_to_gpio(irq)        ((irq) - MXS_GPIO_IRQ_START)
 
+enum mxs_gpio_id {
+        IMX23_GPIO,
+        IMX28_GPIO,
+};
+
 struct mxs_gpio_port {
         void __iomem *base;
         int id;
         int irq;
         int virtual_irq_start;
         struct bgpio_chip bgc;
+        enum mxs_gpio_id devid;
 };
 
+static inline int is_imx23_gpio(struct mxs_gpio_port *port)
+{
+        return port->devid == IMX23_GPIO;
+}
+
+static inline int is_imx28_gpio(struct mxs_gpio_port *port)
+{
+        return port->devid == IMX28_GPIO;
+}
+
 /* Note: This driver assumes 32 GPIOs are handled in one register */
 
 static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
@@ -89,21 +107,21 @@ static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
         }
 
         /* set level or edge */
-        pin_addr = port->base + PINCTRL_IRQLEV(port->id);
+        pin_addr = port->base + PINCTRL_IRQLEV(port);
         if (edge & GPIO_INT_LEV_MASK)
                 writel(pin_mask, pin_addr + MXS_SET);
         else
                 writel(pin_mask, pin_addr + MXS_CLR);
 
         /* set polarity */
-        pin_addr = port->base + PINCTRL_IRQPOL(port->id);
+        pin_addr = port->base + PINCTRL_IRQPOL(port);
         if (edge & GPIO_INT_POL_MASK)
                 writel(pin_mask, pin_addr + MXS_SET);
         else
                 writel(pin_mask, pin_addr + MXS_CLR);
 
         writel(1 << (gpio & 0x1f),
-               port->base + PINCTRL_IRQSTAT(port->id) + MXS_CLR);
+               port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
 
         return 0;
 }
@@ -117,8 +135,8 @@ static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc)
 
         desc->irq_data.chip->irq_ack(&desc->irq_data);
 
-        irq_stat = readl(port->base + PINCTRL_IRQSTAT(port->id)) &
-                        readl(port->base + PINCTRL_IRQEN(port->id));
+        irq_stat = readl(port->base + PINCTRL_IRQSTAT(port)) &
+                        readl(port->base + PINCTRL_IRQEN(port));
 
         while (irq_stat != 0) {
                 int irqoffset = fls(irq_stat) - 1;
@@ -164,8 +182,8 @@ static void __init mxs_gpio_init_gc(struct mxs_gpio_port *port)
         ct->chip.irq_unmask = irq_gc_mask_set_bit;
         ct->chip.irq_set_type = mxs_gpio_set_irq_type;
         ct->chip.irq_set_wake = mxs_gpio_set_wake_irq;
-        ct->regs.ack = PINCTRL_IRQSTAT(port->id) + MXS_CLR;
-        ct->regs.mask = PINCTRL_IRQEN(port->id);
+        ct->regs.ack = PINCTRL_IRQSTAT(port) + MXS_CLR;
+        ct->regs.mask = PINCTRL_IRQEN(port);
 
         irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
 }
@@ -179,60 +197,83 @@ static int mxs_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
         return port->virtual_irq_start + offset;
 }
 
+static struct platform_device_id mxs_gpio_ids[] = {
+        {
+                .name = "imx23-gpio",
+                .driver_data = IMX23_GPIO,
+        }, {
+                .name = "imx28-gpio",
+                .driver_data = IMX28_GPIO,
+        }, {
+                /* sentinel */
+        }
+};
+MODULE_DEVICE_TABLE(platform, mxs_gpio_ids);
+
+static const struct of_device_id mxs_gpio_dt_ids[] = {
+        { .compatible = "fsl,imx23-gpio", .data = (void *) IMX23_GPIO, },
+        { .compatible = "fsl,imx28-gpio", .data = (void *) IMX28_GPIO, },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_gpio_dt_ids);
+
 static int __devinit mxs_gpio_probe(struct platform_device *pdev)
 {
+        const struct of_device_id *of_id =
+                        of_match_device(mxs_gpio_dt_ids, &pdev->dev);
+        struct device_node *np = pdev->dev.of_node;
+        struct device_node *parent;
         static void __iomem *base;
         struct mxs_gpio_port *port;
         struct resource *iores = NULL;
         int err;
 
-        port = kzalloc(sizeof(struct mxs_gpio_port), GFP_KERNEL);
+        port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL);
         if (!port)
                 return -ENOMEM;
 
-        port->id = pdev->id;
+        if (np) {
+                port->id = of_alias_get_id(np, "gpio");
+                if (port->id < 0)
+                        return port->id;
+                port->devid = (enum mxs_gpio_id) of_id->data;
+        } else {
+                port->id = pdev->id;
+                port->devid = pdev->id_entry->driver_data;
+        }
         port->virtual_irq_start = MXS_GPIO_IRQ_START + port->id * 32;
 
+        port->irq = platform_get_irq(pdev, 0);
+        if (port->irq < 0)
+                return port->irq;
+
         /*
          * map memory region only once, as all the gpio ports
          * share the same one
          */
         if (!base) {
-                iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-                if (!iores) {
-                        err = -ENODEV;
-                        goto out_kfree;
-                }
-
-                if (!request_mem_region(iores->start, resource_size(iores),
-                                        pdev->name)) {
-                        err = -EBUSY;
-                        goto out_kfree;
-                }
-
-                base = ioremap(iores->start, resource_size(iores));
-                if (!base) {
-                        err = -ENOMEM;
-                        goto out_release_mem;
+                if (np) {
+                        parent = of_get_parent(np);
+                        base = of_iomap(parent, 0);
+                        of_node_put(parent);
+                } else {
+                        iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+                        base = devm_request_and_ioremap(&pdev->dev, iores);
                 }
+                if (!base)
+                        return -EADDRNOTAVAIL;
         }
         port->base = base;
 
-        port->irq = platform_get_irq(pdev, 0);
-        if (port->irq < 0) {
-                err = -EINVAL;
-                goto out_iounmap;
-        }
-
         /*
          * select the pin interrupt functionality but initially
          * disable the interrupts
          */
-        writel(~0U, port->base + PINCTRL_PIN2IRQ(port->id));
-        writel(0, port->base + PINCTRL_IRQEN(port->id));
+        writel(~0U, port->base + PINCTRL_PIN2IRQ(port));
+        writel(0, port->base + PINCTRL_IRQEN(port));
 
         /* clear address has to be used to clear IRQSTAT bits */
-        writel(~0U, port->base + PINCTRL_IRQSTAT(port->id) + MXS_CLR);
+        writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
 
         /* gpio-mxs can be a generic irq chip */
         mxs_gpio_init_gc(port);
@@ -242,41 +283,32 @@ static int __devinit mxs_gpio_probe(struct platform_device *pdev)
         irq_set_handler_data(port->irq, port);
 
         err = bgpio_init(&port->bgc, &pdev->dev, 4,
-                         port->base + PINCTRL_DIN(port->id),
-                         port->base + PINCTRL_DOUT(port->id), NULL,
-                         port->base + PINCTRL_DOE(port->id), NULL, 0);
+                         port->base + PINCTRL_DIN(port),
+                         port->base + PINCTRL_DOUT(port), NULL,
+                         port->base + PINCTRL_DOE(port), NULL, 0);
         if (err)
-                goto out_iounmap;
+                return err;
 
         port->bgc.gc.to_irq = mxs_gpio_to_irq;
         port->bgc.gc.base = port->id * 32;
 
         err = gpiochip_add(&port->bgc.gc);
-        if (err)
-                goto out_bgpio_remove;
+        if (err) {
+                bgpio_remove(&port->bgc);
+                return err;
+        }
 
         return 0;
-
-out_bgpio_remove:
-        bgpio_remove(&port->bgc);
-out_iounmap:
-        if (iores)
-                iounmap(port->base);
-out_release_mem:
-        if (iores)
-                release_mem_region(iores->start, resource_size(iores));
-out_kfree:
-        kfree(port);
-        dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err);
-        return err;
 }
 
 static struct platform_driver mxs_gpio_driver = {
         .driver         = {
                 .name   = "gpio-mxs",
                 .owner  = THIS_MODULE,
+                .of_match_table = mxs_gpio_dt_ids,
         },
         .probe          = mxs_gpio_probe,
+        .id_table       = mxs_gpio_ids,
 };
 
 static int __init mxs_gpio_init(void)