Merge branch 'master' of git://git.denx.de/u-boot-sunxi

[u-boot] / drivers / gpio / mxc_gpio.c

diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 8bb9e39b7231e522f87eaf9612ad5abf383931e7..d8e72ada194322d70a363146ef39f55d22ee5a8a 100644 (file)
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2009
  * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
  *
  * Copyright (C) 2011
  * Stefano Babic, DENX Software Engineering, <sbabic@denx.de>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 #include <common.h>
 #include <errno.h>
@@ -23,6 +22,7 @@ enum mxc_gpio_direction {
 #define GPIO_PER_BANK                  32
 
 struct mxc_gpio_plat {
+       int bank_index;
        struct gpio_regs *regs;
 };
 
@@ -39,16 +39,22 @@ static unsigned long gpio_ports[] = {
        [1] = GPIO2_BASE_ADDR,
        [2] = GPIO3_BASE_ADDR,
 #if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
-               defined(CONFIG_MX53) || defined(CONFIG_MX6)
+               defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+               defined(CONFIG_MX7) || defined(CONFIG_MX8M)
        [3] = GPIO4_BASE_ADDR,
 #endif
-#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6)
+#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+               defined(CONFIG_MX7) || defined(CONFIG_MX8M)
        [4] = GPIO5_BASE_ADDR,
+#if !(defined(CONFIG_MX6UL) || defined(CONFIG_MX6ULL) || defined(CONFIG_MX8M))
        [5] = GPIO6_BASE_ADDR,
 #endif
-#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
+#endif
+#if defined(CONFIG_MX53) || defined(CONFIG_MX6) || defined(CONFIG_MX7)
+#if !(defined(CONFIG_MX6UL) || defined(CONFIG_MX6ULL))
        [6] = GPIO7_BASE_ADDR,
 #endif
+#endif
 };
 
 static int mxc_gpio_direction(unsigned int gpio,
@@ -150,6 +156,7 @@ int gpio_direction_output(unsigned gpio, int value)
 #endif
 
 #ifdef CONFIG_DM_GPIO
+#include <fdtdec.h>
 static int mxc_gpio_is_output(struct gpio_regs *regs, int offset)
 {
        u32 val;
@@ -258,32 +265,15 @@ static const struct dm_gpio_ops gpio_mxc_ops = {
        .get_function           = mxc_gpio_get_function,
 };
 
-static const struct mxc_gpio_plat mxc_plat[] = {
-       { (struct gpio_regs *)GPIO1_BASE_ADDR },
-       { (struct gpio_regs *)GPIO2_BASE_ADDR },
-       { (struct gpio_regs *)GPIO3_BASE_ADDR },
-#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
-               defined(CONFIG_MX53) || defined(CONFIG_MX6)
-       { (struct gpio_regs *)GPIO4_BASE_ADDR },
-#endif
-#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6)
-       { (struct gpio_regs *)GPIO5_BASE_ADDR },
-       { (struct gpio_regs *)GPIO6_BASE_ADDR },
-#endif
-#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
-       { (struct gpio_regs *)GPIO7_BASE_ADDR },
-#endif
-};
-
 static int mxc_gpio_probe(struct udevice *dev)
 {
        struct mxc_bank_info *bank = dev_get_priv(dev);
        struct mxc_gpio_plat *plat = dev_get_platdata(dev);
-       struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+       struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
        int banknum;
        char name[18], *str;
 
-       banknum = plat - mxc_plat;
+       banknum = plat->bank_index;
        sprintf(name, "GPIO%d_", banknum + 1);
        str = strdup(name);
        if (!str)
@@ -295,12 +285,81 @@ static int mxc_gpio_probe(struct udevice *dev)
        return 0;
 }
 
+static int mxc_gpio_bind(struct udevice *dev)
+{
+       struct mxc_gpio_plat *plat = dev->platdata;
+       fdt_addr_t addr;
+
+       /*
+        * If platdata already exsits, directly return.
+        * Actually only when DT is not supported, platdata
+        * is statically initialized in U_BOOT_DEVICES.Here
+        * will return.
+        */
+       if (plat)
+               return 0;
+
+       addr = devfdt_get_addr(dev);
+       if (addr == FDT_ADDR_T_NONE)
+               return -EINVAL;
+
+       /*
+        * TODO:
+        * When every board is converted to driver model and DT is supported,
+        * this can be done by auto-alloc feature, but not using calloc
+        * to alloc memory for platdata.
+        *
+        * For example mxc_plat below uses platform data rather than device
+        * tree.
+        *
+        * NOTE: DO NOT COPY this code if you are using device tree.
+        */
+       plat = calloc(1, sizeof(*plat));
+       if (!plat)
+               return -ENOMEM;
+
+       plat->regs = (struct gpio_regs *)addr;
+       plat->bank_index = dev->req_seq;
+       dev->platdata = plat;
+
+       return 0;
+}
+
+static const struct udevice_id mxc_gpio_ids[] = {
+       { .compatible = "fsl,imx35-gpio" },
+       { }
+};
+
 U_BOOT_DRIVER(gpio_mxc) = {
        .name   = "gpio_mxc",
        .id     = UCLASS_GPIO,
        .ops    = &gpio_mxc_ops,
        .probe  = mxc_gpio_probe,
        .priv_auto_alloc_size = sizeof(struct mxc_bank_info),
+       .of_match = mxc_gpio_ids,
+       .bind   = mxc_gpio_bind,
+};
+
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
+static const struct mxc_gpio_plat mxc_plat[] = {
+       { 0, (struct gpio_regs *)GPIO1_BASE_ADDR },
+       { 1, (struct gpio_regs *)GPIO2_BASE_ADDR },
+       { 2, (struct gpio_regs *)GPIO3_BASE_ADDR },
+#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
+               defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+               defined(CONFIG_MX8M)
+       { 3, (struct gpio_regs *)GPIO4_BASE_ADDR },
+#endif
+#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+               defined(CONFIG_MX8M)
+       { 4, (struct gpio_regs *)GPIO5_BASE_ADDR },
+#ifndef CONFIG_MX8M
+       { 5, (struct gpio_regs *)GPIO6_BASE_ADDR },
+#endif
+#endif
+#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
+       { 6, (struct gpio_regs *)GPIO7_BASE_ADDR },
+#endif
 };
 
 U_BOOT_DEVICES(mxc_gpios) = {
@@ -308,15 +367,20 @@ U_BOOT_DEVICES(mxc_gpios) = {
        { "gpio_mxc", &mxc_plat[1] },
        { "gpio_mxc", &mxc_plat[2] },
 #if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
-               defined(CONFIG_MX53) || defined(CONFIG_MX6)
+               defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+               defined(CONFIG_MX8M)
        { "gpio_mxc", &mxc_plat[3] },
 #endif
-#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6)
+#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6) || \
+               defined(CONFIG_MX8M)
        { "gpio_mxc", &mxc_plat[4] },
+#ifndef CONFIG_MX8M
        { "gpio_mxc", &mxc_plat[5] },
 #endif
+#endif
 #if defined(CONFIG_MX53) || defined(CONFIG_MX6)
        { "gpio_mxc", &mxc_plat[6] },
 #endif
 };
 #endif
+#endif