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Commit 54ce6883 authored by Michael Williamson's avatar Michael Williamson Committed by Kevin Hilman
Browse files

davinci: da8xx: add spi resources and registration routine 



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: default avatarMichael Williamson <michael.williamson@criticallink.com>
Acked-by: default avatarSekhar Nori <nsekhar@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@ti.com>
parent 12d35cf3

arch/arm/mach-davinci/devices-da8xx.c

+104 −0
Original line number Diff line number Diff line
@@ -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]);

}

arch/arm/mach-davinci/include/mach/da8xx.h

+4 −0
Original line number Diff line number Diff line
@@ -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;