From: Sandeep Paulraj <s-paul...@ti.com>
This patch adds SPI support in the DM365 SOC. The patch adds
platform data for DM365 SPI0 and the resources for
the DM365
Signed-off-by: Sandeep Paulraj <s-paul...@ti.com>
---
arch/arm/mach-davinci/dm365.c | 58 ++++++++++++++++++++++++++++
arch/arm/mach-davinci/include/mach/dm365.h | 3 +
2 files changed, 61 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index e815174..5f17bf8 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -19,6 +19,7 @@
#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/time.h>
#include <mach/serial.h>
#include <mach/common.h>
+#include <mach/spi.h>
+
#include "clock.h"
#include "mux.h"
@@ -606,6 +609,61 @@ INT_CFG(DM365, INT_NSF_DISABLE, 25, 1, 0,
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,
+ .c2tdelay = 8,
+ .t2cdelay = 8,
+};
+
+static struct resource dm365_spi0_resources[] = {
+ {
+ .start = 0x01c66000,
+ .end = 0x01c667ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_DM365_SPIINT0_0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+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,
diff --git a/arch/arm/mach-davinci/include/mach/dm365.h
b/arch/arm/mach-davinci/include/mach/dm365.h
index 09db434..61cfd30 100644
--- a/arch/arm/mach-davinci/include/mach/dm365.h
+++ b/arch/arm/mach-davinci/include/mach/dm365.h
@@ -25,5 +25,8 @@
#define DM365_EMAC_CNTRL_RAM_SIZE (0x2000)
void __init dm365_init(void);
+struct spi_board_info;
+void dm365_init_spi0(unsigned chipselect_mask,
+ struct spi_board_info *info, unsigned len);
#endif /* __ASM_ARCH_DM365_H */
--
1.6.0.4
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