[U-Boot] [PATCH 07/10 V2] Exynos5420: Add support for 5420 in pinmux and gpio
Rajeshwari S Shinde
rajeshwari.s at samsung.com
Mon Sep 2 15:11:44 CEST 2013
From: Akshay Saraswat <akshay.s at samsung.com>
Adds code in pinmux and gpio framework to support Exynos5420.
Signed-off-by: Rajeshwari S Shinde <rajeshwari.s at samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>
---
Changes in V2:
- None
arch/arm/cpu/armv7/exynos/pinmux.c | 171 +++++++++++++++++++++++++++++++-
arch/arm/include/asm/arch-exynos/gpio.h | 52 ++++++++++
2 files changed, 220 insertions(+), 3 deletions(-)
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 1b05ebf..0382176 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -46,6 +46,41 @@ static void exynos5_uart_config(int peripheral)
}
}
+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 =
@@ -101,6 +136,62 @@ static int exynos5_mmc_config(int peripheral, int flags)
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 = 0, gpio_func = 0;
+
+ switch (peripheral) {
+ case PERIPH_ID_SDMMC0:
+ bank = &gpio3->c0;
+ bank_ext = &gpio3->c3;
+ start = 0;
+ gpio_func = GPIO_FUNC(0x2);
+ break;
+ case PERIPH_ID_SDMMC1:
+ bank = &gpio3->c1;
+ bank_ext = &gpio3->d1;
+ start = 4;
+ gpio_func = GPIO_FUNC(0x2);
+ break;
+ case PERIPH_ID_SDMMC2:
+ bank = &gpio3->c2;
+ bank_ext = NULL;
+ gpio_func = GPIO_FUNC(0x2);
+ break;
+ }
+ 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);
+ 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++) {
+ 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);
+ }
+
+ if (peripheral == PERIPH_ID_SDMMC0)
+ s5p_gpio_set_pull(bank, 2, GPIO_PULL_UP);
+
+ 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 void exynos5_sromc_config(int flags)
{
struct exynos5_gpio_part1 *gpio1 =
@@ -269,6 +360,49 @@ void exynos5_spi_config(int peripheral)
}
}
+void exynos5420_spi_config(int peripheral)
+{
+ int cfg = 0, pin = 0, 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:
+ 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));
+ }
+ break;
+ }
+ if (peripheral != PERIPH_ID_SPI4) {
+ for (i = pin; i < pin + 4; i++)
+ s5p_gpio_cfg_pin(bank, i, cfg);
+ }
+}
+
static int exynos5_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
@@ -314,6 +448,35 @@ static int exynos5_pinmux_config(int peripheral, int flags)
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;
+ 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 =
@@ -463,11 +626,13 @@ static int exynos4_pinmux_config(int peripheral, int flags)
int exynos_pinmux_config(int peripheral, int flags)
{
- if (cpu_is_exynos5())
+ if (cpu_is_exynos5()) {
+ if (proid_is_exynos5420())
+ return exynos5420_pinmux_config(peripheral, flags);
return exynos5_pinmux_config(peripheral, flags);
- else if (cpu_is_exynos4())
+ } else if (cpu_is_exynos4()) {
return exynos4_pinmux_config(peripheral, flags);
- else {
+ } else {
debug("pinmux functionality not supported\n");
return -1;
}
diff --git a/arch/arm/include/asm/arch-exynos/gpio.h b/arch/arm/include/asm/arch-exynos/gpio.h
index a1a7439..f892933 100644
--- a/arch/arm/include/asm/arch-exynos/gpio.h
+++ b/arch/arm/include/asm/arch-exynos/gpio.h
@@ -127,6 +127,58 @@ struct exynos4x12_gpio_part4 {
struct s5p_gpio_bank v4;
};
+struct exynos5420_gpio_part1 {
+ struct s5p_gpio_bank a0;
+ struct s5p_gpio_bank a1;
+ struct s5p_gpio_bank a2;
+ struct s5p_gpio_bank b0;
+ struct s5p_gpio_bank b1;
+ struct s5p_gpio_bank b2;
+ struct s5p_gpio_bank b3;
+ struct s5p_gpio_bank b4;
+ struct s5p_gpio_bank h0;
+};
+
+struct exynos5420_gpio_part2 {
+ struct s5p_gpio_bank y7; /* 0x1340_0000 */
+ struct s5p_gpio_bank res[0x5f]; /* */
+ struct s5p_gpio_bank x0; /* 0x1340_0C00 */
+ struct s5p_gpio_bank x1; /* 0x1340_0C20 */
+ struct s5p_gpio_bank x2; /* 0x1340_0C40 */
+ struct s5p_gpio_bank x3; /* 0x1340_0C60 */
+};
+
+struct exynos5420_gpio_part3 {
+ struct s5p_gpio_bank c0;
+ struct s5p_gpio_bank c1;
+ struct s5p_gpio_bank c2;
+ struct s5p_gpio_bank c3;
+ struct s5p_gpio_bank c4;
+ struct s5p_gpio_bank d1;
+ struct s5p_gpio_bank y0;
+ struct s5p_gpio_bank y1;
+ struct s5p_gpio_bank y2;
+ struct s5p_gpio_bank y3;
+ struct s5p_gpio_bank y4;
+ struct s5p_gpio_bank y5;
+ struct s5p_gpio_bank y6;
+};
+
+struct exynos5420_gpio_part4 {
+ struct s5p_gpio_bank e0; /* 0x1400_0000 */
+ struct s5p_gpio_bank e1; /* 0x1400_0020 */
+ struct s5p_gpio_bank f0; /* 0x1400_0040 */
+ struct s5p_gpio_bank f1; /* 0x1400_0060 */
+ struct s5p_gpio_bank g0; /* 0x1400_0080 */
+ struct s5p_gpio_bank g1; /* 0x1400_00A0 */
+ struct s5p_gpio_bank g2; /* 0x1400_00C0 */
+ struct s5p_gpio_bank j4; /* 0x1400_00E0 */
+};
+
+struct exynos5420_gpio_part5 {
+ struct s5p_gpio_bank z0; /* 0x0386_0000 */
+};
+
struct exynos5_gpio_part1 {
struct s5p_gpio_bank a0;
struct s5p_gpio_bank a1;
--
1.7.12.4
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