[PATCH] ARM: EXYNOS4: Add SPI support
Padmavathi Venna
padma.v at samsung.com
Fri Nov 4 09:00:06 EDT 2011
Add SPI setup files for GPIO configurations.
Add SPI clkdev support.
Initialize SPI platform specific code in the machine file.
Signed-off-by: Padmavathi Venna <padma.v at samsung.com>
---
arch/arm/mach-exynos4/Kconfig | 5 ++
arch/arm/mach-exynos4/Makefile | 1 +
arch/arm/mach-exynos4/clock.c | 72 +++++++++++++---------
arch/arm/mach-exynos4/include/mach/irqs.h | 3 +
arch/arm/mach-exynos4/include/mach/map.h | 6 ++
arch/arm/mach-exynos4/include/mach/spi-clocks.h | 16 +++++
arch/arm/mach-exynos4/mach-smdkv310.c | 35 +++++++++++
arch/arm/mach-exynos4/setup-spi.c | 47 +++++++++++++++
8 files changed, 155 insertions(+), 30 deletions(-)
create mode 100644 arch/arm/mach-exynos4/include/mach/spi-clocks.h
create mode 100644 arch/arm/mach-exynos4/setup-spi.c
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index fde6ca5..df7070e 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -127,6 +127,11 @@ config EXYNOS4_SETUP_USB_PHY
help
Common setup code for USB PHY controller
+config EXYNOS4_SETUP_SPI
+ bool
+ help
+ Common setup code for SPI GPIO configurations.
+
# machine support
menu "EXYNOS4 Machines"
diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile
index 4e302cb..e227549 100644
--- a/arch/arm/mach-exynos4/Makefile
+++ b/arch/arm/mach-exynos4/Makefile
@@ -59,5 +59,6 @@ obj-$(CONFIG_EXYNOS4_SETUP_I2C6) += setup-i2c6.o
obj-$(CONFIG_EXYNOS4_SETUP_I2C7) += setup-i2c7.o
obj-$(CONFIG_EXYNOS4_SETUP_KEYPAD) += setup-keypad.o
obj-$(CONFIG_EXYNOS4_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
+obj-$(CONFIG_EXYNOS4_SETUP_SPI) += setup-spi.o
obj-$(CONFIG_EXYNOS4_SETUP_USB_PHY) += setup-usb-phy.o
diff --git a/arch/arm/mach-exynos4/clock.c b/arch/arm/mach-exynos4/clock.c
index 6eeabdd..3f92909 100644
--- a/arch/arm/mach-exynos4/clock.c
+++ b/arch/arm/mach-exynos4/clock.c
@@ -1116,36 +1116,6 @@ static struct clksrc_clk clksrcs[] = {
.reg_div = { .reg = S5P_CLKDIV_LCD0, .shift = 0, .size = 4 },
}, {
.clk = {
- .name = "sclk_spi",
- .devname = "s3c64xx-spi.0",
- .enable = exynos4_clksrc_mask_peril1_ctrl,
- .ctrlbit = (1 << 16),
- },
- .sources = &clkset_group,
- .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 16, .size = 4 },
- .reg_div = { .reg = S5P_CLKDIV_PERIL1, .shift = 0, .size = 4 },
- }, {
- .clk = {
- .name = "sclk_spi",
- .devname = "s3c64xx-spi.1",
- .enable = exynos4_clksrc_mask_peril1_ctrl,
- .ctrlbit = (1 << 20),
- },
- .sources = &clkset_group,
- .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 20, .size = 4 },
- .reg_div = { .reg = S5P_CLKDIV_PERIL1, .shift = 16, .size = 4 },
- }, {
- .clk = {
- .name = "sclk_spi",
- .devname = "s3c64xx-spi.2",
- .enable = exynos4_clksrc_mask_peril1_ctrl,
- .ctrlbit = (1 << 24),
- },
- .sources = &clkset_group,
- .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 24, .size = 4 },
- .reg_div = { .reg = S5P_CLKDIV_PERIL2, .shift = 0, .size = 4 },
- }, {
- .clk = {
.name = "sclk_fimg2d",
},
.sources = &clkset_mout_g2d,
@@ -1262,6 +1232,42 @@ static struct clksrc_clk clk_sclk_mmc3 = {
.reg_div = { .reg = S5P_CLKDIV_FSYS2, .shift = 24, .size = 8 },
};
+static struct clksrc_clk clk_sclk_spi0 = {
+ .clk = {
+ .name = "sclk_spi",
+ .devname = "s3c64xx-spi.0",
+ .enable = exynos4_clksrc_mask_peril1_ctrl,
+ .ctrlbit = (1 << 16),
+ },
+ .sources = &clkset_group,
+ .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 16, .size = 4 },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL1, .shift = 0, .size = 4 },
+};
+
+static struct clksrc_clk clk_sclk_spi1 = {
+ .clk = {
+ .name = "sclk_spi",
+ .devname = "s3c64xx-spi.1",
+ .enable = exynos4_clksrc_mask_peril1_ctrl,
+ .ctrlbit = (1 << 20),
+ },
+ .sources = &clkset_group,
+ .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 20, .size = 4 },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL1, .shift = 16, .size = 4 },
+};
+
+static struct clksrc_clk clk_sclk_spi2 = {
+ .clk = {
+ .name = "sclk_spi",
+ .devname = "s3c64xx-spi.2",
+ .enable = exynos4_clksrc_mask_peril1_ctrl,
+ .ctrlbit = (1 << 24),
+ },
+ .sources = &clkset_group,
+ .reg_src = { .reg = S5P_CLKSRC_PERIL1, .shift = 24, .size = 4 },
+ .reg_div = { .reg = S5P_CLKDIV_PERIL2, .shift = 0, .size = 4 },
+};
+
/* Clock initialization code */
static struct clksrc_clk *sysclks[] = {
&clk_mout_apll,
@@ -1310,6 +1316,9 @@ static struct clksrc_clk *clksrc_cdev[] = {
&clk_sclk_mmc1,
&clk_sclk_mmc2,
&clk_sclk_mmc3,
+ &clk_sclk_spi0,
+ &clk_sclk_spi1,
+ &clk_sclk_spi2,
};
static struct clk_lookup exynos4_clk_lookup[] = {
@@ -1323,6 +1332,9 @@ static struct clk_lookup exynos4_clk_lookup[] = {
CLKDEV_INIT("s3c-sdhci.3", "mmc_busclk.2", &clk_sclk_mmc3.clk),
CLKDEV_INIT("dma-pl330.0", "apb_pclk", &clk_pdma0),
CLKDEV_INIT("dma-pl330.1", "apb_pclk", &clk_pdma1),
+ CLKDEV_INIT("s3c64xx-spi.0", "spi_busclk0", &clk_sclk_spi0.clk),
+ CLKDEV_INIT("s3c64xx-spi.1", "spi_busclk0", &clk_sclk_spi1.clk),
+ CLKDEV_INIT("s3c64xx-spi.2", "spi_busclk0", &clk_sclk_spi2.clk),
};
static int xtal_rate;
diff --git a/arch/arm/mach-exynos4/include/mach/irqs.h b/arch/arm/mach-exynos4/include/mach/irqs.h
index 713dd52..f77bce0 100644
--- a/arch/arm/mach-exynos4/include/mach/irqs.h
+++ b/arch/arm/mach-exynos4/include/mach/irqs.h
@@ -72,6 +72,9 @@
#define IRQ_IIC5 IRQ_SPI(63)
#define IRQ_IIC6 IRQ_SPI(64)
#define IRQ_IIC7 IRQ_SPI(65)
+#define IRQ_SPI0 IRQ_SPI(66)
+#define IRQ_SPI1 IRQ_SPI(67)
+#define IRQ_SPI2 IRQ_SPI(68)
#define IRQ_USB_HOST IRQ_SPI(70)
#define IRQ_USB_HSOTG IRQ_SPI(71)
diff --git a/arch/arm/mach-exynos4/include/mach/map.h b/arch/arm/mach-exynos4/include/mach/map.h
index 918a979..fab8e2b 100644
--- a/arch/arm/mach-exynos4/include/mach/map.h
+++ b/arch/arm/mach-exynos4/include/mach/map.h
@@ -87,6 +87,9 @@
#define EXYNOS4_PA_SYSMMU_TV 0x12E20000
#define EXYNOS4_PA_SYSMMU_MFC_L 0x13620000
#define EXYNOS4_PA_SYSMMU_MFC_R 0x13630000
+#define EXYNOS4_PA_SPI0 0x13920000
+#define EXYNOS4_PA_SPI1 0x13930000
+#define EXYNOS4_PA_SPI2 0x13940000
#define EXYNOS4_PA_GPIO1 0x11400000
#define EXYNOS4_PA_GPIO2 0x11000000
@@ -149,6 +152,9 @@
#define SAMSUNG_PA_ADC1 EXYNOS4_PA_ADC1
#define S3C_PA_RTC EXYNOS4_PA_RTC
#define S3C_PA_WDT EXYNOS4_PA_WATCHDOG
+#define S3C_PA_SPI0 EXYNOS4_PA_SPI0
+#define S3C_PA_SPI1 EXYNOS4_PA_SPI1
+#define S3C_PA_SPI2 EXYNOS4_PA_SPI2
#define S5P_PA_CHIPID EXYNOS4_PA_CHIPID
#define S5P_PA_FIMC0 EXYNOS4_PA_FIMC0
diff --git a/arch/arm/mach-exynos4/include/mach/spi-clocks.h b/arch/arm/mach-exynos4/include/mach/spi-clocks.h
new file mode 100644
index 0000000..576efdf
--- /dev/null
+++ b/arch/arm/mach-exynos4/include/mach/spi-clocks.h
@@ -0,0 +1,16 @@
+/* linux/arch/arm/mach-exynos4/include/mach/spi-clocks.h
+ *
+ * Copyright (C) 2011 Samsung Electronics Co. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_SPI_CLKS_H
+#define __ASM_ARCH_SPI_CLKS_H __FILE__
+
+/* Must source from SCLK_SPI */
+#define EXYNOS4_SPI_SRCCLK_SCLK 0
+
+#endif /* __ASM_ARCH_SPI_CLKS_H */
diff --git a/arch/arm/mach-exynos4/mach-smdkv310.c b/arch/arm/mach-exynos4/mach-smdkv310.c
index cec2afa..8dd9167 100644
--- a/arch/arm/mach-exynos4/mach-smdkv310.c
+++ b/arch/arm/mach-exynos4/mach-smdkv310.c
@@ -40,6 +40,7 @@
#include <plat/mfc.h>
#include <plat/ehci.h>
#include <plat/clock.h>
+#include <plat/s3c64xx-spi.h>
#include <mach/map.h>
@@ -235,6 +236,40 @@ static struct i2c_board_info i2c_devs1[] __initdata = {
{I2C_BOARD_INFO("wm8994", 0x1a),},
};
+#ifdef CONFIG_S3C64XX_DEV_SPI0
+static struct s3c64xx_spi_info smdkv310_spi0_pdata __initdata = {
+ .cfg_gpio = s3c64xx_spi0_cfg_gpio,
+ .fifo_lvl_mask = 0x1ff,
+ .rx_lvl_offset = 15,
+ .high_speed = 1,
+ .clk_from_cmu = true,
+ .tx_st_done = 25,
+};
+#endif
+
+#ifdef CONFIG_S3C64XX_DEV_SPI1
+static struct s3c64xx_spi_info smdkv310_spi1_pdata __initdata = {
+ .cfg_gpio = s3c64xx_spi1_cfg_gpio,
+ .fifo_lvl_mask = 0x7f,
+ .rx_lvl_offset = 15,
+ .high_speed = 1,
+ .clk_from_cmu = true,
+ .tx_st_done = 25,
+};
+#endif
+
+#ifdef CONFIG_S3C64XX_DEV_SPI2
+static struct s3c64xx_spi_info smdkv310_spi2_pdata __initdata = {
+ .cfg_gpio = s3c64xx_spi2_cfg_gpio,
+ .fifo_lvl_mask = 0x7f,
+ .rx_lvl_offset = 15,
+ .high_speed = 1,
+ .clk_from_cmu = true,
+ .tx_st_done = 25,
+};
+#endif
+
+
/* USB EHCI */
static struct s5p_ehci_platdata smdkv310_ehci_pdata;
diff --git a/arch/arm/mach-exynos4/setup-spi.c b/arch/arm/mach-exynos4/setup-spi.c
new file mode 100644
index 0000000..b36ae2f
--- /dev/null
+++ b/arch/arm/mach-exynos4/setup-spi.c
@@ -0,0 +1,47 @@
+/* linux/arch/arm/mach-exynos4/setup-spi0.c
+ *
+ * Copyright (C) 2011 Samsung Electronics Ltd.
+ * http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+
+#include <plat/gpio-cfg.h>
+
+#ifdef CONFIG_S3C64XX_DEV_SPI0
+int s3c64xx_spi0_cfg_gpio(struct platform_device *dev)
+{
+ s3c_gpio_cfgpin(EXYNOS4_GPB(0), S3C_GPIO_SFN(2));
+ s3c_gpio_setpull(EXYNOS4_GPB(0), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgall_range(EXYNOS4_GPB(2), 2,
+ S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP);
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_S3C64XX_DEV_SPI1
+int s3c64xx_spi1_cfg_gpio(struct platform_device *dev)
+{
+ s3c_gpio_cfgpin(EXYNOS4_GPB(4), S3C_GPIO_SFN(2));
+ s3c_gpio_setpull(EXYNOS4_GPB(4), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgall_range(EXYNOS4_GPB(6), 2,
+ S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP);
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_S3C64XX_DEV_SPI2
+int s3c64xx_spi2_cfg_gpio(struct platform_device *dev)
+{
+ s3c_gpio_cfgpin(EXYNOS4_GPC1(1), S3C_GPIO_SFN(5));
+ s3c_gpio_setpull(EXYNOS4_GPC1(1), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgall_range(EXYNOS4_GPC1(3), 2,
+ S3C_GPIO_SFN(5), S3C_GPIO_PULL_UP);
+ return 0;
+}
+#endif
--
1.7.0.4
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