pinctrl: Add help text to Kconfig

[oweals/u-boot.git] / drivers / gpio / sunxi_gpio.c

diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c
index 2fa50f9f8d5d46336d65c0d2345de8dee37d0cae..9d8f11ef302ac960d0a8ad1e36181508d05db83f 100644 (file)
--- a/drivers/gpio/sunxi_gpio.c
+++ b/drivers/gpio/sunxi_gpio.c
@@ -15,6 +15,7 @@
 #include <errno.h>
 #include <fdtdec.h>
 #include <malloc.h>
+#include <asm/arch/gpio.h>
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include <dm/device-internal.h>
@@ -101,6 +102,7 @@ int sunxi_name_to_gpio(const char *name)
        int groupsize = 9 * 32;
        long pin;
        char *eptr;
+
        if (*name == 'P' || *name == 'p')
                name++;
        if (*name >= 'A') {
@@ -118,7 +120,44 @@ int sunxi_name_to_gpio(const char *name)
 }
 #endif
 
+int sunxi_name_to_gpio_bank(const char *name)
+{
+       int group = 0;
+
+       if (*name == 'P' || *name == 'p')
+               name++;
+       if (*name >= 'A') {
+               group = *name - (*name > 'a' ? 'a' : 'A');
+               return group;
+       }
+
+       return -1;
+}
+
 #ifdef CONFIG_DM_GPIO
+/* TODO(sjg@chromium.org): Remove this function and use device tree */
+int sunxi_name_to_gpio(const char *name)
+{
+       unsigned int gpio;
+       int ret;
+#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO
+       char lookup[8];
+
+       if (strcasecmp(name, "AXP0-VBUS-DETECT") == 0) {
+               sprintf(lookup, SUNXI_GPIO_AXP0_PREFIX "%d",
+                       SUNXI_GPIO_AXP0_VBUS_DETECT);
+               name = lookup;
+       } else if (strcasecmp(name, "AXP0-VBUS-ENABLE") == 0) {
+               sprintf(lookup, SUNXI_GPIO_AXP0_PREFIX "%d",
+                       SUNXI_GPIO_AXP0_VBUS_ENABLE);
+               name = lookup;
+       }
+#endif
+       ret = gpio_lookup_name(name, NULL, NULL, &gpio);
+
+       return ret ? ret : gpio;
+}
+
 static int sunxi_gpio_direction_input(struct udevice *dev, unsigned offset)
 {
        struct sunxi_gpio_platdata *plat = dev_get_platdata(dev);
@@ -196,10 +235,11 @@ static char *gpio_bank_name(int bank)
 {
        char *name;
 
-       name = malloc(2);
+       name = malloc(3);
        if (name) {
-               name[0] = 'A' + bank;
-               name[1] = '\0';
+               name[0] = 'P';
+               name[1] = 'A' + bank;
+               name[2] = '\0';
        }
 
        return name;
@@ -208,7 +248,7 @@ static char *gpio_bank_name(int bank)
 static int gpio_sunxi_probe(struct udevice *dev)
 {
        struct sunxi_gpio_platdata *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);
 
        /* Tell the uclass how many GPIOs we have */
        if (plat) {
@@ -226,16 +266,27 @@ static int gpio_sunxi_bind(struct udevice *parent)
 {
        struct sunxi_gpio_platdata *plat = parent->platdata;
        struct sunxi_gpio_reg *ctlr;
-       int bank;
-       int ret;
+       int bank, no_banks, ret, start;
 
        /* If this is a child device, there is nothing to do here */
        if (plat)
                return 0;
 
-       ctlr = (struct sunxi_gpio_reg *)fdtdec_get_addr(gd->fdt_blob,
-                                                  parent->of_offset, "reg");
-       for (bank = 0; bank < SUNXI_GPIO_BANKS; bank++) {
+       if (fdt_node_check_compatible(gd->fdt_blob, parent->of_offset,
+                               "allwinner,sun6i-a31-r-pinctrl") == 0) {
+               start = 'L' - 'A';
+               no_banks = 2; /* L & M */
+       } else if (fdt_node_check_compatible(gd->fdt_blob, parent->of_offset,
+                               "allwinner,sun8i-a23-r-pinctrl") == 0) {
+               start = 'L' - 'A';
+               no_banks = 1; /* L only */
+       } else {
+               start = 0;
+               no_banks = SUNXI_GPIO_BANKS;
+       }
+
+       ctlr = (struct sunxi_gpio_reg *)dev_get_addr(parent);
+       for (bank = 0; bank < no_banks; bank++) {
                struct sunxi_gpio_platdata *plat;
                struct udevice *dev;
 
@@ -243,7 +294,7 @@ static int gpio_sunxi_bind(struct udevice *parent)
                if (!plat)
                        return -ENOMEM;
                plat->regs = &ctlr->gpio_bank[bank];
-               plat->bank_name = gpio_bank_name(bank);
+               plat->bank_name = gpio_bank_name(start + bank);
                plat->gpio_count = SUNXI_GPIOS_PER_BANK;
 
                ret = device_bind(parent, parent->driver,
@@ -257,7 +308,17 @@ static int gpio_sunxi_bind(struct udevice *parent)
 }
 
 static const struct udevice_id sunxi_gpio_ids[] = {
+       { .compatible = "allwinner,sun4i-a10-pinctrl" },
+       { .compatible = "allwinner,sun5i-a10s-pinctrl" },
+       { .compatible = "allwinner,sun5i-a13-pinctrl" },
+       { .compatible = "allwinner,sun6i-a31-pinctrl" },
+       { .compatible = "allwinner,sun6i-a31s-pinctrl" },
        { .compatible = "allwinner,sun7i-a20-pinctrl" },
+       { .compatible = "allwinner,sun8i-a23-pinctrl" },
+       { .compatible = "allwinner,sun8i-a33-pinctrl" },
+       { .compatible = "allwinner,sun9i-a80-pinctrl" },
+       { .compatible = "allwinner,sun6i-a31-r-pinctrl" },
+       { .compatible = "allwinner,sun8i-a23-r-pinctrl" },
        { }
 };