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davinci: da8xx: add spi resources and registration routine

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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.williamson@criticallink.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Michael Williamson 2011-02-24 10:18:28 +05:30 committed by Kevin Hilman
parent 12d35cf374
commit 54ce6883d2
2 changed files with 108 additions and 0 deletions
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104
arch/arm/mach-davinci/devices-da8xx.c
View file

@ -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)
@ -723,3 +729,101 @@ 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]);
}

4
arch/arm/mach-davinci/include/mach/da8xx.h
View file

@ -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;