Patchwork [U-Boot,07/10] Exynos5420: Add support for 5420 in pinmux and gpio

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Submitter Rajeshwari Birje
Date Sept. 2, 2013, 12:15 p.m.
Message ID <1378124111-26145-8-git-send-email-rajeshwari.s@samsung.com>
Download mbox | patch
Permalink /patch/271916/
State Superseded
Delegated to: Minkyu Kang
Headers show

Comments

Rajeshwari Birje - Sept. 2, 2013, 12:15 p.m.
From: Akshay Saraswat <akshay.s@samsung.com>

Adds code in pinmux and gpio framework to support Exynos5420.

Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
---
 arch/arm/cpu/armv7/exynos/pinmux.c      | 171 +++++++++++++++++++++++++++++++-
 arch/arm/include/asm/arch-exynos/gpio.h |  52 ++++++++++
 2 files changed, 220 insertions(+), 3 deletions(-)

Patch

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;