Add IO resource structures, platform data, and a registration
routine in order to support spi device on DA850/OMAP-L138/AM18x
and DA830/OMAP-L137/AM17x platforms.
Signed-off-by: Michael Williamson <michael.william...@criticallink.com>
---
arch/arm/mach-davinci/devices-da8xx.c | 104 ++++++++++++++++++++++++++++
arch/arm/mach-davinci/include/mach/da8xx.h | 4 +
2 files changed, 108 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/devices-da8xx.c
b/arch/arm/mach-davinci/devices-da8xx.c
index 119d46e..625d4b6 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -38,14 +38,20 @@
#define DA8XX_EMAC_MDIO_BASE 0x01e24000
#define DA8XX_GPIO_BASE 0x01e26000
#define DA8XX_I2C1_BASE 0x01e28000
+#define DA8XX_SPI0_BASE 0x01c41000
+#define DA8XX_SPI1_BASE 0x01f0e000
#define DA8XX_EMAC_CTRL_REG_OFFSET 0x3000
#define DA8XX_EMAC_MOD_REG_OFFSET 0x2000
#define DA8XX_EMAC_RAM_OFFSET 0x0000
#define DA8XX_EMAC_CTRL_RAM_SIZE SZ_8K
+#define DA8XX_DMA_SPI0_RX EDMA_CTLR_CHAN(0, 14)
+#define DA8XX_DMA_SPI0_TX EDMA_CTLR_CHAN(0, 15)
#define DA8XX_DMA_MMCSD0_RX EDMA_CTLR_CHAN(0, 16)
#define DA8XX_DMA_MMCSD0_TX EDMA_CTLR_CHAN(0, 17)
+#define DA8XX_DMA_SPI1_RX EDMA_CTLR_CHAN(0, 18)
+#define DA8XX_DMA_SPI1_TX EDMA_CTLR_CHAN(0, 19)
#define DA850_DMA_MMCSD1_RX EDMA_CTLR_CHAN(1, 28)
#define DA850_DMA_MMCSD1_TX EDMA_CTLR_CHAN(1, 29)
@@ -730,3 +736,101 @@ int __init da8xx_register_cpuidle(void)
return platform_device_register(&da8xx_cpuidle_device);
}
+
+static struct resource da8xx_spi0_resources[] = {
+ [0] = {
+ .start = DA8XX_SPI0_BASE,
+ .end = DA8XX_SPI0_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_DA8XX_SPINT0,
+ .end = IRQ_DA8XX_SPINT0,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = DA8XX_DMA_SPI0_RX,
+ .end = DA8XX_DMA_SPI0_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ [3] = {
+ .start = DA8XX_DMA_SPI0_TX,
+ .end = DA8XX_DMA_SPI0_TX,
+ .flags = IORESOURCE_DMA,
+ },
+};
+
+static struct resource da8xx_spi1_resources[] = {
+ [0] = {
+ .start = DA8XX_SPI1_BASE,
+ .end = DA8XX_SPI1_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_DA8XX_SPINT1,
+ .end = IRQ_DA8XX_SPINT1,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = DA8XX_DMA_SPI1_RX,
+ .end = DA8XX_DMA_SPI1_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ [3] = {
+ .start = DA8XX_DMA_SPI1_TX,
+ .end = DA8XX_DMA_SPI1_TX,
+ .flags = IORESOURCE_DMA,
+ },
+};
+
+struct davinci_spi_platform_data da8xx_spi_pdata[] = {
+ [0] = {
+ .version = SPI_VERSION_2,
+ .intr_line = 1,
+ .dma_event_q = EVENTQ_0,
+ },
+ [1] = {
+ .version = SPI_VERSION_2,
+ .intr_line = 1,
+ .dma_event_q = EVENTQ_0,
+ },
+};
+
+static struct platform_device da8xx_spi_device[] = {
+ [0] = {
+ .name = "spi_davinci",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(da8xx_spi0_resources),
+ .resource = da8xx_spi0_resources,
+ .dev = {
+ .platform_data = &da8xx_spi_pdata[0],
+ },
+ },
+ [1] = {
+ .name = "spi_davinci",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(da8xx_spi1_resources),
+ .resource = da8xx_spi1_resources,
+ .dev = {
+ .platform_data = &da8xx_spi_pdata[1],
+ },
+ },
+};
+
+int __init da8xx_register_spi(int instance, struct spi_board_info *info,
+ unsigned len)
+{
+ int ret;
+
+ if (instance < 0 || instance > 1)
+ return -EINVAL;
+
+ ret = spi_register_board_info(info, len);
+ if (ret)
+ pr_warning("%s: failed to register board info for spi %d :"
+ " %d\n", __func__, instance, ret);
+
+ da8xx_spi_pdata[instance].num_chipselect = len;
+
+ return platform_device_register(&da8xx_spi_device[instance]);
+}
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h
b/arch/arm/mach-davinci/include/mach/da8xx.h
index cfcb223..e4fc1af 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -15,6 +15,7 @@
#include <linux/platform_device.h>
#include <linux/davinci_emac.h>
+#include <linux/spi/spi.h>
#include <mach/serial.h>
#include <mach/edma.h>
@@ -23,6 +24,7 @@
#include <mach/mmc.h>
#include <mach/usb.h>
#include <mach/pm.h>
+#include <mach/spi.h>
extern void __iomem *da8xx_syscfg0_base;
extern void __iomem *da8xx_syscfg1_base;
@@ -77,6 +79,7 @@ void __init da850_init(void);
int da830_register_edma(struct edma_rsv_info *rsv);
int da850_register_edma(struct edma_rsv_info *rsv[2]);
int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
+int da8xx_register_spi(int instance, struct spi_board_info *info, unsigned
len);
int da8xx_register_watchdog(void);
int da8xx_register_usb20(unsigned mA, unsigned potpgt);
int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
@@ -95,6 +98,7 @@ extern struct platform_device da8xx_serial_device;
extern struct emac_platform_data da8xx_emac_pdata;
extern struct da8xx_lcdc_platform_data sharp_lcd035q3dg01_pdata;
extern struct da8xx_lcdc_platform_data sharp_lk043t1dg01_pdata;
+extern struct davinci_spi_platform_data da8xx_spi_pdata[];
extern struct platform_device da8xx_wdt_device;
--
1.7.0.4
_______________________________________________
Davinci-linux-open-source mailing list
Davinci-linux-open-source@linux.davincidsp.com
http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
