EXYNOS4_GPIO_Y65,
EXYNOS4_GPIO_Y66,
EXYNOS4_GPIO_Y67,
- EXYNOS4_GPIO_X00 = 896, /* 896 0x380 */
+ EXYNOS4_GPIO_X00, /* 256 0x100 */
EXYNOS4_GPIO_X01,
EXYNOS4_GPIO_X02,
EXYNOS4_GPIO_X03,
EXYNOS4_GPIO_X05,
EXYNOS4_GPIO_X06,
EXYNOS4_GPIO_X07,
- EXYNOS4_GPIO_X10, /* 904 0x388 */
+ EXYNOS4_GPIO_X10, /* 264 0x108 */
EXYNOS4_GPIO_X11,
EXYNOS4_GPIO_X12,
EXYNOS4_GPIO_X13,
EXYNOS4_GPIO_X15,
EXYNOS4_GPIO_X16,
EXYNOS4_GPIO_X17,
- EXYNOS4_GPIO_X20, /* 912 0x390 */
+ EXYNOS4_GPIO_X20, /* 272 0x110 */
EXYNOS4_GPIO_X21,
EXYNOS4_GPIO_X22,
EXYNOS4_GPIO_X23,
EXYNOS4_GPIO_X25,
EXYNOS4_GPIO_X26,
EXYNOS4_GPIO_X27,
- EXYNOS4_GPIO_X30, /* 920 0x398 */
+ EXYNOS4_GPIO_X30, /* 280 0x118 */
EXYNOS4_GPIO_X31,
EXYNOS4_GPIO_X32,
EXYNOS4_GPIO_X33,
EXYNOS4_GPIO_X37,
/* GPIO_PART3_STARTS */
- EXYNOS4_GPIO_MAX_PORT_PART_2, /* 928 0x3A0 */
+ EXYNOS4_GPIO_MAX_PORT_PART_2, /* 288 0x120 */
EXYNOS4_GPIO_Z0 = EXYNOS4_GPIO_MAX_PORT_PART_2,
EXYNOS4_GPIO_Z1,
EXYNOS4_GPIO_Z2,
EXYNOS4X12_GPIO_D15,
EXYNOS4X12_GPIO_D16,
EXYNOS4X12_GPIO_D17,
- EXYNOS4X12_GPIO_F00 = 96, /* 96 0x60 */
+ EXYNOS4X12_GPIO_F00, /* 56 0x38 */
EXYNOS4X12_GPIO_F01,
EXYNOS4X12_GPIO_F02,
EXYNOS4X12_GPIO_F03,
EXYNOS4X12_GPIO_F05,
EXYNOS4X12_GPIO_F06,
EXYNOS4X12_GPIO_F07,
- EXYNOS4X12_GPIO_F10, /* 104 0x68 */
+ EXYNOS4X12_GPIO_F10, /* 64 0x40 */
EXYNOS4X12_GPIO_F11,
EXYNOS4X12_GPIO_F12,
EXYNOS4X12_GPIO_F13,
EXYNOS4X12_GPIO_F15,
EXYNOS4X12_GPIO_F16,
EXYNOS4X12_GPIO_F17,
- EXYNOS4X12_GPIO_F20, /* 112 0x70 */
+ EXYNOS4X12_GPIO_F20, /* 72 0x48 */
EXYNOS4X12_GPIO_F21,
EXYNOS4X12_GPIO_F22,
EXYNOS4X12_GPIO_F23,
EXYNOS4X12_GPIO_F25,
EXYNOS4X12_GPIO_F26,
EXYNOS4X12_GPIO_F27,
- EXYNOS4X12_GPIO_F30, /* 120 0x78 */
+ EXYNOS4X12_GPIO_F30, /* 80 0x50 */
EXYNOS4X12_GPIO_F31,
EXYNOS4X12_GPIO_F32,
EXYNOS4X12_GPIO_F33,
EXYNOS4X12_GPIO_F35,
EXYNOS4X12_GPIO_F36,
EXYNOS4X12_GPIO_F37,
- EXYNOS4X12_GPIO_J00 = 144, /* 144 0x90 */
+ EXYNOS4X12_GPIO_J00, /* 88 0x58 */
EXYNOS4X12_GPIO_J01,
EXYNOS4X12_GPIO_J02,
EXYNOS4X12_GPIO_J03,
EXYNOS4X12_GPIO_J05,
EXYNOS4X12_GPIO_J06,
EXYNOS4X12_GPIO_J07,
- EXYNOS4X12_GPIO_J10, /* 152 0x98 */
+ EXYNOS4X12_GPIO_J10, /* 96 0x60 */
EXYNOS4X12_GPIO_J11,
EXYNOS4X12_GPIO_J12,
EXYNOS4X12_GPIO_J13,
EXYNOS4X12_GPIO_J17,
/* GPIO_PART2_STARTS */
- EXYNOS4X12_GPIO_MAX_PORT_PART_1,/* 160 0xA0 */
- EXYNOS4X12_GPIO_K00 = 176, /* 176 0xB0 */
+ EXYNOS4X12_GPIO_MAX_PORT_PART_1,/* 104 0x66 */
+ EXYNOS4X12_GPIO_K00 = EXYNOS4X12_GPIO_MAX_PORT_PART_1,
EXYNOS4X12_GPIO_K01,
EXYNOS4X12_GPIO_K02,
EXYNOS4X12_GPIO_K03,
EXYNOS4X12_GPIO_K05,
EXYNOS4X12_GPIO_K06,
EXYNOS4X12_GPIO_K07,
- EXYNOS4X12_GPIO_K10, /* 184 0xB8 */
+ EXYNOS4X12_GPIO_K10, /* 112 0x70 */
EXYNOS4X12_GPIO_K11,
EXYNOS4X12_GPIO_K12,
EXYNOS4X12_GPIO_K13,
EXYNOS4X12_GPIO_K15,
EXYNOS4X12_GPIO_K16,
EXYNOS4X12_GPIO_K17,
- EXYNOS4X12_GPIO_K20, /* 192 0xC0 */
+ EXYNOS4X12_GPIO_K20, /* 120 0x78 */
EXYNOS4X12_GPIO_K21,
EXYNOS4X12_GPIO_K22,
EXYNOS4X12_GPIO_K23,
EXYNOS4X12_GPIO_K25,
EXYNOS4X12_GPIO_K26,
EXYNOS4X12_GPIO_K27,
- EXYNOS4X12_GPIO_K30, /* 200 0xC8 */
+ EXYNOS4X12_GPIO_K30, /* 128 0x80 */
EXYNOS4X12_GPIO_K31,
EXYNOS4X12_GPIO_K32,
EXYNOS4X12_GPIO_K33,
EXYNOS4X12_GPIO_K35,
EXYNOS4X12_GPIO_K36,
EXYNOS4X12_GPIO_K37,
- EXYNOS4X12_GPIO_L00, /* 208 0xD0 */
+ EXYNOS4X12_GPIO_L00, /* 136 0x88 */
EXYNOS4X12_GPIO_L01,
EXYNOS4X12_GPIO_L02,
EXYNOS4X12_GPIO_L03,
EXYNOS4X12_GPIO_L05,
EXYNOS4X12_GPIO_L06,
EXYNOS4X12_GPIO_L07,
- EXYNOS4X12_GPIO_L10, /* 216 0xD8 */
+ EXYNOS4X12_GPIO_L10, /* 144 0x90 */
EXYNOS4X12_GPIO_L11,
EXYNOS4X12_GPIO_L12,
EXYNOS4X12_GPIO_L13,
EXYNOS4X12_GPIO_L15,
EXYNOS4X12_GPIO_L16,
EXYNOS4X12_GPIO_L17,
- EXYNOS4X12_GPIO_L20, /* 224 0xE0 */
+ EXYNOS4X12_GPIO_L20, /* 152 0x98 */
EXYNOS4X12_GPIO_L21,
EXYNOS4X12_GPIO_L22,
EXYNOS4X12_GPIO_L23,
EXYNOS4X12_GPIO_L25,
EXYNOS4X12_GPIO_L26,
EXYNOS4X12_GPIO_L27,
- EXYNOS4X12_GPIO_Y00, /* 232 0xE8 */
+ EXYNOS4X12_GPIO_Y00, /* 160 0xa0 */
EXYNOS4X12_GPIO_Y01,
EXYNOS4X12_GPIO_Y02,
EXYNOS4X12_GPIO_Y03,
EXYNOS4X12_GPIO_Y05,
EXYNOS4X12_GPIO_Y06,
EXYNOS4X12_GPIO_Y07,
- EXYNOS4X12_GPIO_Y10, /* 240 0xF0 */
+ EXYNOS4X12_GPIO_Y10, /* 168 0xa8 */
EXYNOS4X12_GPIO_Y11,
EXYNOS4X12_GPIO_Y12,
EXYNOS4X12_GPIO_Y13,
EXYNOS4X12_GPIO_Y15,
EXYNOS4X12_GPIO_Y16,
EXYNOS4X12_GPIO_Y17,
- EXYNOS4X12_GPIO_Y20, /* 248 0xF8 */
+ EXYNOS4X12_GPIO_Y20, /* 176 0xb0 */
EXYNOS4X12_GPIO_Y21,
EXYNOS4X12_GPIO_Y22,
EXYNOS4X12_GPIO_Y23,
EXYNOS4X12_GPIO_Y25,
EXYNOS4X12_GPIO_Y26,
EXYNOS4X12_GPIO_Y27,
- EXYNOS4X12_GPIO_Y30, /* 256 0x100 */
+ EXYNOS4X12_GPIO_Y30, /* 184 0xb8 */
EXYNOS4X12_GPIO_Y31,
EXYNOS4X12_GPIO_Y32,
EXYNOS4X12_GPIO_Y33,
EXYNOS4X12_GPIO_Y35,
EXYNOS4X12_GPIO_Y36,
EXYNOS4X12_GPIO_Y37,
- EXYNOS4X12_GPIO_Y40, /* 264 0x108 */
+ EXYNOS4X12_GPIO_Y40, /* 192 0xc0 */
EXYNOS4X12_GPIO_Y41,
EXYNOS4X12_GPIO_Y42,
EXYNOS4X12_GPIO_Y43,
EXYNOS4X12_GPIO_Y45,
EXYNOS4X12_GPIO_Y46,
EXYNOS4X12_GPIO_Y47,
- EXYNOS4X12_GPIO_Y50, /* 272 0x110 */
+ EXYNOS4X12_GPIO_Y50, /* 200 0xc8 */
EXYNOS4X12_GPIO_Y51,
EXYNOS4X12_GPIO_Y52,
EXYNOS4X12_GPIO_Y53,
EXYNOS4X12_GPIO_Y55,
EXYNOS4X12_GPIO_Y56,
EXYNOS4X12_GPIO_Y57,
- EXYNOS4X12_GPIO_Y60, /* 280 0x118 */
+ EXYNOS4X12_GPIO_Y60, /* 208 0xd0 */
EXYNOS4X12_GPIO_Y61,
EXYNOS4X12_GPIO_Y62,
EXYNOS4X12_GPIO_Y63,
EXYNOS4X12_GPIO_Y65,
EXYNOS4X12_GPIO_Y66,
EXYNOS4X12_GPIO_Y67,
- EXYNOS4X12_GPIO_M00 = 312, /* 312 0xF0 */
+ EXYNOS4X12_GPIO_M00, /* 216 0xd8 */
EXYNOS4X12_GPIO_M01,
EXYNOS4X12_GPIO_M02,
EXYNOS4X12_GPIO_M03,
EXYNOS4X12_GPIO_M05,
EXYNOS4X12_GPIO_M06,
EXYNOS4X12_GPIO_M07,
- EXYNOS4X12_GPIO_M10, /* 320 0xF8 */
+ EXYNOS4X12_GPIO_M10, /* 224 0xe0 */
EXYNOS4X12_GPIO_M11,
EXYNOS4X12_GPIO_M12,
EXYNOS4X12_GPIO_M13,
EXYNOS4X12_GPIO_M15,
EXYNOS4X12_GPIO_M16,
EXYNOS4X12_GPIO_M17,
- EXYNOS4X12_GPIO_M20, /* 328 0x100 */
+ EXYNOS4X12_GPIO_M20, /* 232 0xe8 */
EXYNOS4X12_GPIO_M21,
EXYNOS4X12_GPIO_M22,
EXYNOS4X12_GPIO_M23,
EXYNOS4X12_GPIO_M25,
EXYNOS4X12_GPIO_M26,
EXYNOS4X12_GPIO_M27,
- EXYNOS4X12_GPIO_M30, /* 336 0x108 */
+ EXYNOS4X12_GPIO_M30, /* 240 0xf0 */
EXYNOS4X12_GPIO_M31,
EXYNOS4X12_GPIO_M32,
EXYNOS4X12_GPIO_M33,
EXYNOS4X12_GPIO_M35,
EXYNOS4X12_GPIO_M36,
EXYNOS4X12_GPIO_M37,
- EXYNOS4X12_GPIO_M40, /* 344 0x110 */
+ EXYNOS4X12_GPIO_M40, /* 248 0xf8 */
EXYNOS4X12_GPIO_M41,
EXYNOS4X12_GPIO_M42,
EXYNOS4X12_GPIO_M43,
EXYNOS4X12_GPIO_M45,
EXYNOS4X12_GPIO_M46,
EXYNOS4X12_GPIO_M47,
- EXYNOS4X12_GPIO_X00 = 928, /* 928 0x3A0 */
+ EXYNOS4X12_GPIO_X00, /* 256 0x100 */
EXYNOS4X12_GPIO_X01,
EXYNOS4X12_GPIO_X02,
EXYNOS4X12_GPIO_X03,
EXYNOS4X12_GPIO_X05,
EXYNOS4X12_GPIO_X06,
EXYNOS4X12_GPIO_X07,
- EXYNOS4X12_GPIO_X10, /* 936 0x3A8 */
+ EXYNOS4X12_GPIO_X10, /* 264 0x108 */
EXYNOS4X12_GPIO_X11,
EXYNOS4X12_GPIO_X12,
EXYNOS4X12_GPIO_X13,
EXYNOS4X12_GPIO_X15,
EXYNOS4X12_GPIO_X16,
EXYNOS4X12_GPIO_X17,
- EXYNOS4X12_GPIO_X20, /* 944 0x3B0 */
+ EXYNOS4X12_GPIO_X20, /* 272 0x110 */
EXYNOS4X12_GPIO_X21,
EXYNOS4X12_GPIO_X22,
EXYNOS4X12_GPIO_X23,
EXYNOS4X12_GPIO_X25,
EXYNOS4X12_GPIO_X26,
EXYNOS4X12_GPIO_X27,
- EXYNOS4X12_GPIO_X30, /* 952 0x3B8 */
+ EXYNOS4X12_GPIO_X30, /* 280 0x118 */
EXYNOS4X12_GPIO_X31,
EXYNOS4X12_GPIO_X32,
EXYNOS4X12_GPIO_X33,
EXYNOS4X12_GPIO_X37,
/* GPIO_PART3_STARTS */
- EXYNOS4X12_GPIO_MAX_PORT_PART_2,/* 960 0x3C0 */
+ EXYNOS4X12_GPIO_MAX_PORT_PART_2,/* 288 0x120 */
EXYNOS4X12_GPIO_Z0 = EXYNOS4X12_GPIO_MAX_PORT_PART_2,
EXYNOS4X12_GPIO_Z1,
EXYNOS4X12_GPIO_Z2,
EXYNOS4X12_GPIO_Z7,
/* GPIO_PART4_STARTS */
- EXYNOS4X12_GPIO_MAX_PORT_PART_3,/* 968 0x3C8 */
+ EXYNOS4X12_GPIO_MAX_PORT_PART_3,/* 296 0x128 */
EXYNOS4X12_GPIO_V00 = EXYNOS4X12_GPIO_MAX_PORT_PART_3,
EXYNOS4X12_GPIO_V01,
EXYNOS4X12_GPIO_V02,
EXYNOS4X12_GPIO_V05,
EXYNOS4X12_GPIO_V06,
EXYNOS4X12_GPIO_V07,
- EXYNOS4X12_GPIO_V10, /* 976 0x3D0 */
+ EXYNOS4X12_GPIO_V10, /* 304 0x130 */
EXYNOS4X12_GPIO_V11,
EXYNOS4X12_GPIO_V12,
EXYNOS4X12_GPIO_V13,
EXYNOS4X12_GPIO_V15,
EXYNOS4X12_GPIO_V16,
EXYNOS4X12_GPIO_V17,
- EXYNOS4X12_GPIO_V20 = 992, /* 992 0x3E0 */
+ EXYNOS4X12_GPIO_V20, /* 312 0x138 */
EXYNOS4X12_GPIO_V21,
EXYNOS4X12_GPIO_V22,
EXYNOS4X12_GPIO_V23,
EXYNOS4X12_GPIO_V25,
EXYNOS4X12_GPIO_V26,
EXYNOS4X12_GPIO_V27,
- EXYNOS4X12_GPIO_V30 = 1000, /* 1000 0x3E8 */
+ EXYNOS4X12_GPIO_V30, /* 320 0x140 */
EXYNOS4X12_GPIO_V31,
EXYNOS4X12_GPIO_V32,
EXYNOS4X12_GPIO_V33,
EXYNOS4X12_GPIO_V35,
EXYNOS4X12_GPIO_V36,
EXYNOS4X12_GPIO_V37,
- EXYNOS4X12_GPIO_V40 = 1016, /* 1016 0x3F8 */
+ EXYNOS4X12_GPIO_V40, /* 328 0x148 */
EXYNOS4X12_GPIO_V41,
EXYNOS4X12_GPIO_V42,
EXYNOS4X12_GPIO_V43,
*/
#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <malloc.h>
#include <asm/io.h>
#include <asm/gpio.h>
+#include <dm/device-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
#define S5P_GPIO_GET_PIN(x) (x % GPIO_PER_BANK)
#define RATE_MASK(gpio) (0x1 << (gpio + 16))
#define RATE_SET(gpio) (0x1 << (gpio + 16))
-#define name_to_gpio(n) s5p_name_to_gpio(n)
-static inline int s5p_name_to_gpio(const char *name)
+#define GPIO_NAME_SIZE 20
+
+/* Platform data for each bank */
+struct exynos_gpio_platdata {
+ struct s5p_gpio_bank *bank;
+ const char *bank_name; /* Name of port, e.g. 'gpa0" */
+};
+
+/* Information about each bank at run-time */
+struct exynos_bank_info {
+ char label[GPIO_PER_BANK][GPIO_NAME_SIZE];
+ struct s5p_gpio_bank *bank;
+};
+
+static struct s5p_gpio_bank *s5p_gpio_get_bank(unsigned int gpio)
{
- unsigned num, irregular_set_number, irregular_bank_base;
- const struct gpio_name_num_table *tabp;
- char this_bank, bank_name, irregular_bank_name;
- char *endp;
-
- /*
- * The gpio name starts with either 'g' or 'gp' followed by the bank
- * name character. Skip one or two characters depending on the prefix.
- */
- if (name[0] == 'g' && name[1] == 'p')
- name += 2;
- else if (name[0] == 'g')
- name++;
- else
- return -1; /* Name must start with 'g' */
-
- bank_name = *name++;
- if (!*name)
- return -1; /* At least one digit is required/expected. */
-
- /*
- * On both exynos5 and exynos5420 architectures there is a bank of
- * GPIOs which does not fall into the regular address pattern. Those
- * banks are c4 on Exynos5 and y7 on Exynos5420. The rest of the below
- * assignments help to handle these irregularities.
- */
-#if defined(CONFIG_EXYNOS4) || defined(CONFIG_EXYNOS5)
- if (cpu_is_exynos5()) {
- if (proid_is_exynos5420()) {
- tabp = exynos5420_gpio_table;
- irregular_bank_name = 'y';
- irregular_set_number = '7';
- irregular_bank_base = EXYNOS5420_GPIO_Y70;
- } else {
- tabp = exynos5_gpio_table;
- irregular_bank_name = 'c';
- irregular_set_number = '4';
- irregular_bank_base = EXYNOS5_GPIO_C40;
- }
- } else {
- if (proid_is_exynos4412())
- tabp = exynos4x12_gpio_table;
- else
- tabp = exynos4_gpio_table;
- irregular_bank_name = 0;
- irregular_set_number = 0;
- irregular_bank_base = 0;
- }
-#else
- if (cpu_is_s5pc110())
- tabp = s5pc110_gpio_table;
- else
- tabp = s5pc100_gpio_table;
- irregular_bank_name = 0;
- irregular_set_number = 0;
- irregular_bank_base = 0;
-#endif
+ const struct gpio_info *data;
+ unsigned int upto;
+ int i, count;
- this_bank = tabp->bank;
- do {
- if (bank_name == this_bank) {
- unsigned pin_index; /* pin number within the bank */
- if ((bank_name == irregular_bank_name) &&
- (name[0] == irregular_set_number)) {
- pin_index = name[1] - '0';
- /* Irregular sets have 8 pins. */
- if (pin_index >= GPIO_PER_BANK)
- return -1;
- num = irregular_bank_base + pin_index;
- } else {
- pin_index = simple_strtoul(name, &endp, 8);
- pin_index -= tabp->bank_offset;
- /*
- * Sanity check: bunk 'z' has no set number,
- * for all other banks there must be exactly
- * two octal digits, and the resulting number
- * should not exceed the number of pins in the
- * bank.
- */
- if (((bank_name != 'z') && !name[1]) ||
- *endp ||
- (pin_index >= tabp->bank_size))
- return -1;
- num = tabp->base + pin_index;
- }
- return num;
+ data = get_gpio_data();
+ count = get_bank_num();
+ upto = 0;
+
+ for (i = 0; i < count; i++) {
+ debug("i=%d, upto=%d\n", i, upto);
+ if (gpio < data->max_gpio) {
+ struct s5p_gpio_bank *bank;
+ bank = (struct s5p_gpio_bank *)data->reg_addr;
+ bank += (gpio - upto) / GPIO_PER_BANK;
+ debug("gpio=%d, bank=%p\n", gpio, bank);
+ return bank;
}
- this_bank = (++tabp)->bank;
- } while (this_bank);
- return -1;
+ upto = data->max_gpio;
+ data++;
+ }
+
+ return NULL;
}
static void s5p_gpio_cfg_pin(struct s5p_gpio_bank *bank, int gpio, int cfg)
writel(value, &bank->dat);
}
-static void s5p_gpio_direction_output(struct s5p_gpio_bank *bank,
- int gpio, int en)
+#ifdef CONFIG_SPL_BUILD
+/* Common GPIO API - SPL does not support driver model yet */
+int gpio_set_value(unsigned gpio, int value)
{
- s5p_gpio_cfg_pin(bank, gpio, S5P_GPIO_OUTPUT);
- s5p_gpio_set_value(bank, gpio, en);
-}
+ s5p_gpio_set_value(s5p_gpio_get_bank(gpio),
+ s5p_gpio_get_pin(gpio), value);
-static void s5p_gpio_direction_input(struct s5p_gpio_bank *bank, int gpio)
+ return 0;
+}
+#else
+static int s5p_gpio_get_cfg_pin(struct s5p_gpio_bank *bank, int gpio)
{
- s5p_gpio_cfg_pin(bank, gpio, S5P_GPIO_INPUT);
+ unsigned int value;
+
+ value = readl(&bank->con);
+ value &= CON_MASK(gpio);
+ return CON_SFR_UNSHIFT(value, gpio);
}
static unsigned int s5p_gpio_get_value(struct s5p_gpio_bank *bank, int gpio)
value = readl(&bank->dat);
return !!(value & DAT_MASK(gpio));
}
+#endif /* CONFIG_SPL_BUILD */
static void s5p_gpio_set_pull(struct s5p_gpio_bank *bank, int gpio, int mode)
{
writel(value, &bank->drv);
}
-static struct s5p_gpio_bank *s5p_gpio_get_bank(unsigned int gpio)
+int s5p_gpio_get_pin(unsigned gpio)
{
- const struct gpio_info *data;
- unsigned int upto;
- int i, count;
+ return S5P_GPIO_GET_PIN(gpio);
+}
- data = get_gpio_data();
- count = get_bank_num();
- upto = 0;
+/* Driver model interface */
+#ifndef CONFIG_SPL_BUILD
+static int exynos_gpio_get_state(struct udevice *dev, unsigned int offset,
+ char *buf, int bufsize)
+{
+ struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ const char *label;
+ bool is_output;
+ int size;
+ int cfg;
+
+ label = state->label[offset];
+ cfg = s5p_gpio_get_cfg_pin(state->bank, offset);
+ is_output = cfg == S5P_GPIO_OUTPUT;
+ size = snprintf(buf, bufsize, "%s%d: ",
+ uc_priv->bank_name ? uc_priv->bank_name : "", offset);
+ buf += size;
+ bufsize -= size;
+ if (is_output || cfg == S5P_GPIO_INPUT) {
+ snprintf(buf, bufsize, "%s: %d [%c]%s%s",
+ is_output ? "out" : " in",
+ s5p_gpio_get_value(state->bank, offset),
+ *label ? 'x' : ' ',
+ *label ? " " : "",
+ label);
+ } else {
+ snprintf(buf, bufsize, "sfpio");
+ }
- for (i = 0; i < count; i++) {
- debug("i=%d, upto=%d\n", i, upto);
- if (gpio < data->max_gpio) {
- struct s5p_gpio_bank *bank;
- bank = (struct s5p_gpio_bank *)data->reg_addr;
- bank += (gpio - upto) / GPIO_PER_BANK;
- debug("gpio=%d, bank=%p\n", gpio, bank);
- return bank;
- }
+ return 0;
+}
- upto = data->max_gpio;
- data++;
+static int check_reserved(struct udevice *dev, unsigned offset,
+ const char *func)
+{
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+
+ if (!*state->label[offset]) {
+ printf("exynos_gpio: %s: error: gpio %s%d not reserved\n",
+ func, uc_priv->bank_name, offset);
+ return -EPERM;
}
- return NULL;
+ return 0;
}
-int s5p_gpio_get_pin(unsigned gpio)
+/* set GPIO pin 'gpio' as an input */
+static int exynos_gpio_direction_input(struct udevice *dev, unsigned offset)
{
- return S5P_GPIO_GET_PIN(gpio);
-}
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ int ret;
-/* Common GPIO API */
+ ret = check_reserved(dev, offset, __func__);
+ if (ret)
+ return ret;
+
+ /* Configure GPIO direction as input. */
+ s5p_gpio_cfg_pin(state->bank, offset, S5P_GPIO_INPUT);
-int gpio_request(unsigned gpio, const char *label)
-{
return 0;
}
-int gpio_free(unsigned gpio)
+/* set GPIO pin 'gpio' as an output, with polarity 'value' */
+static int exynos_gpio_direction_output(struct udevice *dev, unsigned offset,
+ int value)
{
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ int ret;
+
+ ret = check_reserved(dev, offset, __func__);
+ if (ret)
+ return ret;
+
+ /* Configure GPIO output value. */
+ s5p_gpio_set_value(state->bank, offset, value);
+
+ /* Configure GPIO direction as output. */
+ s5p_gpio_cfg_pin(state->bank, offset, S5P_GPIO_OUTPUT);
+
return 0;
}
-int gpio_direction_input(unsigned gpio)
+/* read GPIO IN value of pin 'gpio' */
+static int exynos_gpio_get_value(struct udevice *dev, unsigned offset)
{
- s5p_gpio_direction_input(s5p_gpio_get_bank(gpio),
- s5p_gpio_get_pin(gpio));
- return 0;
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ int ret;
+
+ ret = check_reserved(dev, offset, __func__);
+ if (ret)
+ return ret;
+
+ return s5p_gpio_get_value(state->bank, offset);
}
-int gpio_direction_output(unsigned gpio, int value)
+/* write GPIO OUT value to pin 'gpio' */
+static int exynos_gpio_set_value(struct udevice *dev, unsigned offset,
+ int value)
{
- s5p_gpio_direction_output(s5p_gpio_get_bank(gpio),
- s5p_gpio_get_pin(gpio), value);
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ int ret;
+
+ ret = check_reserved(dev, offset, __func__);
+ if (ret)
+ return ret;
+
+ s5p_gpio_set_value(state->bank, offset, value);
+
return 0;
}
-int gpio_get_value(unsigned gpio)
+static int exynos_gpio_request(struct udevice *dev, unsigned offset,
+ const char *label)
{
- return (int) s5p_gpio_get_value(s5p_gpio_get_bank(gpio),
- s5p_gpio_get_pin(gpio));
+ struct exynos_bank_info *state = dev_get_priv(dev);
+
+ if (*state->label[offset])
+ return -EBUSY;
+
+ strncpy(state->label[offset], label, GPIO_NAME_SIZE);
+ state->label[offset][GPIO_NAME_SIZE - 1] = '\0';
+
+ return 0;
}
-int gpio_set_value(unsigned gpio, int value)
+static int exynos_gpio_free(struct udevice *dev, unsigned offset)
{
- s5p_gpio_set_value(s5p_gpio_get_bank(gpio),
- s5p_gpio_get_pin(gpio), value);
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ int ret;
+
+ ret = check_reserved(dev, offset, __func__);
+ if (ret)
+ return ret;
+ state->label[offset][0] = '\0';
return 0;
}
+#endif /* nCONFIG_SPL_BUILD */
+/*
+ * There is no common GPIO API for pull, drv, pin, rate (yet). These
+ * functions are kept here to preserve function ordering for review.
+ */
void gpio_set_pull(int gpio, int mode)
{
s5p_gpio_set_pull(s5p_gpio_get_bank(gpio),
s5p_gpio_set_rate(s5p_gpio_get_bank(gpio),
s5p_gpio_get_pin(gpio), mode);
}
+
+#ifndef CONFIG_SPL_BUILD
+static int exynos_gpio_get_function(struct udevice *dev, unsigned offset)
+{
+ struct exynos_bank_info *state = dev_get_priv(dev);
+ int cfg;
+
+ if (!*state->label[offset])
+ return GPIOF_UNUSED;
+ cfg = s5p_gpio_get_cfg_pin(state->bank, offset);
+ if (cfg == S5P_GPIO_OUTPUT)
+ return GPIOF_OUTPUT;
+ else if (cfg == S5P_GPIO_INPUT)
+ return GPIOF_INPUT;
+ else
+ return GPIOF_FUNC;
+}
+
+static const struct dm_gpio_ops gpio_exynos_ops = {
+ .request = exynos_gpio_request,
+ .free = exynos_gpio_free,
+ .direction_input = exynos_gpio_direction_input,
+ .direction_output = exynos_gpio_direction_output,
+ .get_value = exynos_gpio_get_value,
+ .set_value = exynos_gpio_set_value,
+ .get_function = exynos_gpio_get_function,
+ .get_state = exynos_gpio_get_state,
+};
+
+static int gpio_exynos_probe(struct udevice *dev)
+{
+ struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+ struct exynos_bank_info *priv = dev->priv;
+ struct exynos_gpio_platdata *plat = dev->platdata;
+
+ /* Only child devices have ports */
+ if (!plat)
+ return 0;
+
+ priv->bank = plat->bank;
+
+ uc_priv->gpio_count = GPIO_PER_BANK;
+ uc_priv->bank_name = plat->bank_name;
+
+ return 0;
+}
+
+/**
+ * We have a top-level GPIO device with no actual GPIOs. It has a child
+ * device for each Exynos GPIO bank.
+ */
+static int gpio_exynos_bind(struct udevice *parent)
+{
+ struct exynos_gpio_platdata *plat = parent->platdata;
+ struct s5p_gpio_bank *bank, *base;
+ const void *blob = gd->fdt_blob;
+ int node;
+
+ /* If this is a child device, there is nothing to do here */
+ if (plat)
+ return 0;
+
+ base = (struct s5p_gpio_bank *)fdtdec_get_addr(gd->fdt_blob,
+ parent->of_offset, "reg");
+ for (node = fdt_first_subnode(blob, parent->of_offset), bank = base;
+ node > 0;
+ node = fdt_next_subnode(blob, node), bank++) {
+ struct exynos_gpio_platdata *plat;
+ struct udevice *dev;
+ fdt_addr_t reg;
+ int ret;
+
+ if (!fdtdec_get_bool(blob, node, "gpio-controller"))
+ continue;
+ plat = calloc(1, sizeof(*plat));
+ if (!plat)
+ return -ENOMEM;
+ reg = fdtdec_get_addr(blob, node, "reg");
+ if (reg != FDT_ADDR_T_NONE)
+ bank = (struct s5p_gpio_bank *)((ulong)base + reg);
+ plat->bank = bank;
+ plat->bank_name = fdt_get_name(blob, node, NULL);
+ debug("dev at %p: %s\n", bank, plat->bank_name);
+
+ ret = device_bind(parent, parent->driver,
+ plat->bank_name, plat, -1, &dev);
+ if (ret)
+ return ret;
+ dev->of_offset = parent->of_offset;
+ }
+
+ return 0;
+}
+
+static const struct udevice_id exynos_gpio_ids[] = {
+ { .compatible = "samsung,s5pc100-pinctrl" },
+ { .compatible = "samsung,s5pc110-pinctrl" },
+ { .compatible = "samsung,exynos4210-pinctrl" },
+ { .compatible = "samsung,exynos4x12-pinctrl" },
+ { .compatible = "samsung,exynos5250-pinctrl" },
+ { .compatible = "samsung,exynos5420-pinctrl" },
+ { }
+};
+
+U_BOOT_DRIVER(gpio_exynos) = {
+ .name = "gpio_exynos",
+ .id = UCLASS_GPIO,
+ .of_match = exynos_gpio_ids,
+ .bind = gpio_exynos_bind,
+ .probe = gpio_exynos_probe,
+ .priv_auto_alloc_size = sizeof(struct exynos_bank_info),
+ .ops = &gpio_exynos_ops,
+};
+#endif
projects / u-boot / commitdiff