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DaVinci DM365: Adding DM365 SPI support 

This patch adds SPI init for DM365.
It does the following
1) Initializes SPI0
2) Defines resources to be used by SPI0
3) Adds platform data for SPI0

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Sandeep Paulraj 2010-02-01 09:51:31 -05:00 committed by Kevin Hilman
parent 15e865859a
commit a3e13e89d6
2 changed files with 72 additions and 0 deletions
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70
arch/arm/mach-davinci/dm365.c
View File

@ -18,6 +18,7 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <asm/mach/map.h>
@ -32,6 +33,8 @@
#include <mach/common.h>
#include <mach/asp.h>
#include <mach/keyscan.h>
#include <mach/spi.h>
#include "clock.h"
#include "mux.h"
@ -611,6 +614,73 @@ EVT_CFG(DM365, EVT3_VC_RX, 1, 1, 1, false)
#endif
};
static u64 dm365_spi0_dma_mask = DMA_BIT_MASK(32);
static struct davinci_spi_platform_data dm365_spi0_pdata = {
.version = SPI_VERSION_1,
.num_chipselect = 2,
.clk_internal = 1,
.cs_hold = 1,
.intr_level = 0,
.poll_mode = 1, /* 0 -> interrupt mode 1-> polling mode */
.c2tdelay = 0,
.t2cdelay = 0,
};
static struct resource dm365_spi0_resources[] = {
{
.start = 0x01c66000,
.end = 0x01c667ff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_DM365_SPIINT0_0,
.flags = IORESOURCE_IRQ,
},
{
.start = 17,
.flags = IORESOURCE_DMA,
},
{
.start = 16,
.flags = IORESOURCE_DMA,
},
{
.start = EVENTQ_3,
.flags = IORESOURCE_DMA,
},
};
static struct platform_device dm365_spi0_device = {
.name = "spi_davinci",
.id = 0,
.dev = {
.dma_mask = &dm365_spi0_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &dm365_spi0_pdata,
},
.num_resources = ARRAY_SIZE(dm365_spi0_resources),
.resource = dm365_spi0_resources,
};
void __init dm365_init_spi0(unsigned chipselect_mask,
struct spi_board_info *info, unsigned len)
{
davinci_cfg_reg(DM365_SPI0_SCLK);
davinci_cfg_reg(DM365_SPI0_SDI);
davinci_cfg_reg(DM365_SPI0_SDO);
/* not all slaves will be wired up */
if (chipselect_mask & BIT(0))
davinci_cfg_reg(DM365_SPI0_SDENA0);
if (chipselect_mask & BIT(1))
davinci_cfg_reg(DM365_SPI0_SDENA1);
spi_register_board_info(info, len);
platform_device_register(&dm365_spi0_device);
}
static struct emac_platform_data dm365_emac_pdata = {
.ctrl_reg_offset = DM365_EMAC_CNTRL_OFFSET,
.ctrl_mod_reg_offset = DM365_EMAC_CNTRL_MOD_OFFSET,

2
arch/arm/mach-davinci/include/mach/dm365.h
View File

@ -41,6 +41,8 @@ void __init dm365_init_asp(struct snd_platform_data *pdata);
void __init dm365_init_vc(struct snd_platform_data *pdata);
void __init dm365_init_ks(struct davinci_ks_platform_data *pdata);
void __init dm365_init_rtc(void);
void dm365_init_spi0(unsigned chipselect_mask,
struct spi_board_info *info, unsigned len);
void dm365_set_vpfe_config(struct vpfe_config *cfg);
#endif /* __ASM_ARCH_DM365_H */