Exynos5420: Add support for 5420 in pinmux and gpio
Adds code in pinmux and gpio framework to support Exynos5420.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 74cc700..904177a 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -46,6 +46,42 @@
}
}
+static void exynos5420_uart_config(int peripheral)
+{
+ struct exynos5420_gpio_part1 *gpio1 =
+ (struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
+ struct s5p_gpio_bank *bank;
+ int i, start, count;
+
+ switch (peripheral) {
+ case PERIPH_ID_UART0:
+ bank = &gpio1->a0;
+ start = 0;
+ count = 4;
+ break;
+ case PERIPH_ID_UART1:
+ bank = &gpio1->a0;
+ start = 4;
+ count = 4;
+ break;
+ case PERIPH_ID_UART2:
+ bank = &gpio1->a1;
+ start = 0;
+ count = 4;
+ break;
+ case PERIPH_ID_UART3:
+ bank = &gpio1->a1;
+ start = 4;
+ count = 2;
+ break;
+ }
+
+ for (i = start; i < start + count; i++) {
+ s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
+ s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
+ }
+}
+
static int exynos5_mmc_config(int peripheral, int flags)
{
struct exynos5_gpio_part1 *gpio1 =
@@ -89,9 +125,78 @@
}
for (i = 0; i < 2; i++) {
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
+ s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
+ s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
+ }
+ for (i = 3; i <= 6; i++) {
+ s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
+ s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);
+ s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
+ }
+
+ return 0;
+}
+
+static int exynos5420_mmc_config(int peripheral, int flags)
+{
+ struct exynos5420_gpio_part3 *gpio3 =
+ (struct exynos5420_gpio_part3 *)samsung_get_base_gpio_part3();
+ struct s5p_gpio_bank *bank = NULL, *bank_ext = NULL;
+ int i, start;
+
+ switch (peripheral) {
+ case PERIPH_ID_SDMMC0:
+ bank = &gpio3->c0;
+ bank_ext = &gpio3->c3;
+ start = 0;
+ break;
+ case PERIPH_ID_SDMMC1:
+ bank = &gpio3->c1;
+ bank_ext = &gpio3->d1;
+ start = 4;
+ break;
+ case PERIPH_ID_SDMMC2:
+ bank = &gpio3->c2;
+ bank_ext = NULL;
+ start = 0;
+ break;
+ default:
+ start = 0;
+ debug("%s: invalid peripheral %d", __func__, peripheral);
+ return -1;
+ }
+
+ if ((flags & PINMUX_FLAG_8BIT_MODE) && !bank_ext) {
+ debug("SDMMC device %d does not support 8bit mode",
+ peripheral);
+ return -1;
+ }
+
+ if (flags & PINMUX_FLAG_8BIT_MODE) {
+ for (i = start; i <= (start + 3); i++) {
+ s5p_gpio_cfg_pin(bank_ext, i, GPIO_FUNC(0x2));
+ s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_UP);
+ s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
+ }
+ }
+
+ for (i = 0; i < 3; i++) {
+ /*
+ * MMC0 is intended to be used for eMMC. The
+ * card detect pin is used as a VDDEN signal to
+ * power on the eMMC. The 5420 iROM makes
+ * this same assumption.
+ */
+ if ((peripheral == PERIPH_ID_SDMMC0) && (i == 2)) {
+ s5p_gpio_set_value(bank, i, 1);
+ s5p_gpio_cfg_pin(bank, i, GPIO_OUTPUT);
+ } else {
+ s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
+ }
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
+
for (i = 3; i <= 6; i++) {
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);
@@ -216,6 +321,59 @@
}
}
+static void exynos5420_i2c_config(int peripheral)
+{
+ struct exynos5420_gpio_part1 *gpio1 =
+ (struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
+
+ switch (peripheral) {
+ case PERIPH_ID_I2C0:
+ s5p_gpio_cfg_pin(&gpio1->b3, 0, GPIO_FUNC(0x2));
+ s5p_gpio_cfg_pin(&gpio1->b3, 1, GPIO_FUNC(0x2));
+ break;
+ case PERIPH_ID_I2C1:
+ s5p_gpio_cfg_pin(&gpio1->b3, 2, GPIO_FUNC(0x2));
+ s5p_gpio_cfg_pin(&gpio1->b3, 3, GPIO_FUNC(0x2));
+ break;
+ case PERIPH_ID_I2C2:
+ s5p_gpio_cfg_pin(&gpio1->a0, 6, GPIO_FUNC(0x3));
+ s5p_gpio_cfg_pin(&gpio1->a0, 7, GPIO_FUNC(0x3));
+ break;
+ case PERIPH_ID_I2C3:
+ s5p_gpio_cfg_pin(&gpio1->a1, 2, GPIO_FUNC(0x3));
+ s5p_gpio_cfg_pin(&gpio1->a1, 3, GPIO_FUNC(0x3));
+ break;
+ case PERIPH_ID_I2C4:
+ s5p_gpio_cfg_pin(&gpio1->a2, 0, GPIO_FUNC(0x3));
+ s5p_gpio_cfg_pin(&gpio1->a2, 1, GPIO_FUNC(0x3));
+ break;
+ case PERIPH_ID_I2C5:
+ s5p_gpio_cfg_pin(&gpio1->a2, 2, GPIO_FUNC(0x3));
+ s5p_gpio_cfg_pin(&gpio1->a2, 3, GPIO_FUNC(0x3));
+ break;
+ case PERIPH_ID_I2C6:
+ s5p_gpio_cfg_pin(&gpio1->b1, 3, GPIO_FUNC(0x4));
+ s5p_gpio_cfg_pin(&gpio1->b1, 4, GPIO_FUNC(0x4));
+ break;
+ case PERIPH_ID_I2C7:
+ s5p_gpio_cfg_pin(&gpio1->b2, 2, GPIO_FUNC(0x3));
+ s5p_gpio_cfg_pin(&gpio1->b2, 3, GPIO_FUNC(0x3));
+ break;
+ case PERIPH_ID_I2C8:
+ s5p_gpio_cfg_pin(&gpio1->b3, 4, GPIO_FUNC(0x2));
+ s5p_gpio_cfg_pin(&gpio1->b3, 5, GPIO_FUNC(0x2));
+ break;
+ case PERIPH_ID_I2C9:
+ s5p_gpio_cfg_pin(&gpio1->b3, 6, GPIO_FUNC(0x2));
+ s5p_gpio_cfg_pin(&gpio1->b3, 7, GPIO_FUNC(0x2));
+ break;
+ case PERIPH_ID_I2C10:
+ s5p_gpio_cfg_pin(&gpio1->b4, 0, GPIO_FUNC(0x2));
+ s5p_gpio_cfg_pin(&gpio1->b4, 1, GPIO_FUNC(0x2));
+ break;
+ }
+}
+
static void exynos5_i2s_config(int peripheral)
{
int i;
@@ -279,6 +437,58 @@
}
}
+void exynos5420_spi_config(int peripheral)
+{
+ int cfg, pin, i;
+ struct s5p_gpio_bank *bank = NULL;
+ struct exynos5420_gpio_part1 *gpio1 =
+ (struct exynos5420_gpio_part1 *)samsung_get_base_gpio_part1();
+ struct exynos5420_gpio_part4 *gpio4 =
+ (struct exynos5420_gpio_part4 *)samsung_get_base_gpio_part4();
+
+ switch (peripheral) {
+ case PERIPH_ID_SPI0:
+ bank = &gpio1->a2;
+ cfg = GPIO_FUNC(0x2);
+ pin = 0;
+ break;
+ case PERIPH_ID_SPI1:
+ bank = &gpio1->a2;
+ cfg = GPIO_FUNC(0x2);
+ pin = 4;
+ break;
+ case PERIPH_ID_SPI2:
+ bank = &gpio1->b1;
+ cfg = GPIO_FUNC(0x5);
+ pin = 1;
+ break;
+ case PERIPH_ID_SPI3:
+ bank = &gpio4->f1;
+ cfg = GPIO_FUNC(0x2);
+ pin = 0;
+ break;
+ case PERIPH_ID_SPI4:
+ cfg = 0;
+ pin = 0;
+ break;
+ default:
+ cfg = 0;
+ pin = 0;
+ debug("%s: invalid peripheral %d", __func__, peripheral);
+ return;
+ }
+
+ if (peripheral != PERIPH_ID_SPI4) {
+ for (i = pin; i < pin + 4; i++)
+ s5p_gpio_cfg_pin(bank, i, cfg);
+ } else {
+ for (i = 0; i < 2; i++) {
+ s5p_gpio_cfg_pin(&gpio4->f0, i + 2, GPIO_FUNC(0x4));
+ s5p_gpio_cfg_pin(&gpio4->e0, i + 4, GPIO_FUNC(0x4));
+ }
+ }
+}
+
static int exynos5_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
@@ -325,6 +535,48 @@
return 0;
}
+static int exynos5420_pinmux_config(int peripheral, int flags)
+{
+ switch (peripheral) {
+ case PERIPH_ID_UART0:
+ case PERIPH_ID_UART1:
+ case PERIPH_ID_UART2:
+ case PERIPH_ID_UART3:
+ exynos5420_uart_config(peripheral);
+ break;
+ case PERIPH_ID_SDMMC0:
+ case PERIPH_ID_SDMMC1:
+ case PERIPH_ID_SDMMC2:
+ case PERIPH_ID_SDMMC3:
+ return exynos5420_mmc_config(peripheral, flags);
+ case PERIPH_ID_SPI0:
+ case PERIPH_ID_SPI1:
+ case PERIPH_ID_SPI2:
+ case PERIPH_ID_SPI3:
+ case PERIPH_ID_SPI4:
+ exynos5420_spi_config(peripheral);
+ break;
+ case PERIPH_ID_I2C0:
+ case PERIPH_ID_I2C1:
+ case PERIPH_ID_I2C2:
+ case PERIPH_ID_I2C3:
+ case PERIPH_ID_I2C4:
+ case PERIPH_ID_I2C5:
+ case PERIPH_ID_I2C6:
+ case PERIPH_ID_I2C7:
+ case PERIPH_ID_I2C8:
+ case PERIPH_ID_I2C9:
+ case PERIPH_ID_I2C10:
+ exynos5420_i2c_config(peripheral);
+ break;
+ default:
+ debug("%s: invalid peripheral %d", __func__, peripheral);
+ return -1;
+ }
+
+ return 0;
+}
+
static void exynos4_i2c_config(int peripheral, int flags)
{
struct exynos4_gpio_part1 *gpio1 =
@@ -475,13 +727,17 @@
int exynos_pinmux_config(int peripheral, int flags)
{
if (cpu_is_exynos5()) {
- return exynos5_pinmux_config(peripheral, flags);
+ if (proid_is_exynos5420())
+ return exynos5420_pinmux_config(peripheral, flags);
+ else if (proid_is_exynos5250())
+ return exynos5_pinmux_config(peripheral, flags);
} else if (cpu_is_exynos4()) {
return exynos4_pinmux_config(peripheral, flags);
} else {
debug("pinmux functionality not supported\n");
- return -1;
}
+
+ return -1;
}
#ifdef CONFIG_OF_CONTROL