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authorSandeep Paulraj <s-paulraj@ti.com>2010-02-01 17:51:15 +0300
committerKevin Hilman <khilman@deeprootsystems.com>2010-03-01 21:20:23 +0300
commit15e865859a9e65a3f39e95bcb7ee72d0645b9a0e (patch)
tree988266cdd865c94e269ed8b5e962d45d79df303c /arch
parent8e2a0013c2bafd623d27b35364cbf28d4a0dbe55 (diff)
downloadlinux-15e865859a9e65a3f39e95bcb7ee72d0645b9a0e.tar.xz
DaVinci DM355: Modifications to DM355 SPI support
This patch does the following 1) Minor change to the SPI clocks making it similar to DM365. 2) Changing the interrupt used by SPI0 3) Adding EDMA resources that can be used by SPI0 4) Adding platform specific data. Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-davinci/dm355.c39
1 files changed, 28 insertions, 11 deletions
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index 2cdd8740aad9..36e7213779e8 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -29,6 +29,7 @@
#include <mach/serial.h>
#include <mach/common.h>
#include <mach/asp.h>
+#include <mach/spi.h>
#include "clock.h"
#include "mux.h"
@@ -363,9 +364,9 @@ static struct clk_lookup dm355_clks[] = {
CLK("davinci-asp.1", NULL, &asp1_clk),
CLK("davinci_mmc.0", NULL, &mmcsd0_clk),
CLK("davinci_mmc.1", NULL, &mmcsd1_clk),
- CLK(NULL, "spi0", &spi0_clk),
- CLK(NULL, "spi1", &spi1_clk),
- CLK(NULL, "spi2", &spi2_clk),
+ CLK("spi_davinci.0", NULL, &spi0_clk),
+ CLK("spi_davinci.1", NULL, &spi1_clk),
+ CLK("spi_davinci.2", NULL, &spi2_clk),
CLK(NULL, "gpio", &gpio_clk),
CLK(NULL, "aemif", &aemif_clk),
CLK(NULL, "pwm0", &pwm0_clk),
@@ -392,24 +393,40 @@ static struct resource dm355_spi0_resources[] = {
.flags = IORESOURCE_MEM,
},
{
- .start = IRQ_DM355_SPINT0_1,
+ .start = IRQ_DM355_SPINT0_0,
.flags = IORESOURCE_IRQ,
},
- /* Not yet used, so not included:
- * IORESOURCE_IRQ:
- * - IRQ_DM355_SPINT0_0
- * IORESOURCE_DMA:
- * - DAVINCI_DMA_SPI_SPIX
- * - DAVINCI_DMA_SPI_SPIR
- */
+ {
+ .start = 17,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .start = 16,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .start = EVENTQ_1,
+ .flags = IORESOURCE_DMA,
+ },
};
+static struct davinci_spi_platform_data dm355_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 platform_device dm355_spi0_device = {
.name = "spi_davinci",
.id = 0,
.dev = {
.dma_mask = &dm355_spi0_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &dm355_spi0_pdata,
},
.num_resources = ARRAY_SIZE(dm355_spi0_resources),
.resource = dm355_spi0_resources,