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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-07 11:06:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-07 11:06:17 -0700
commit38f56f33ca381751f9b8910f67e7a805ec0b68cb (patch)
tree202f2ce60f3f43a948607ec76c8cc48c1cf73a4b /drivers/i2c/busses
parentfcba914542082b272f31c8e4c40000b88ed3208d (diff)
parent4183bef2e093a2f0aab45f2d5fed82b0e02aeacf (diff)
downloadvexpress-lsk-38f56f33ca381751f9b8910f67e7a805ec0b68cb.tar.gz
Merge tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree updates (part 2) from Arnd Bergmann: "These are mostly new device tree bindings for existing drivers, as well as changes to the device tree source files to add support for those devices, and a couple of new boards, most notably Samsung's Exynos5 based Chromebook. The changes depend on earlier platform specific updates and touch the usual platforms: omap, exynos, tegra, mxs, mvebu and davinci." * tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits) ARM: exynos: dts: cros5250: add EC device ARM: dts: Add sbs-battery for exynos5250-snow ARM: dts: Add i2c-arbitrator bus for exynos5250-snow ARM: dts: add mshc controller node for Exynos4x12 SoCs ARM: dts: Add chip-id controller node on Exynos4/5 SoC ARM: EXYNOS: Create virtual I/O mapping for Chip-ID controller using device tree ARM: davinci: da850-evm: add SPI flash support ARM: davinci: da850: override SPI DT node device name ARM: davinci: da850: add SPI1 DT node spi/davinci: add DT binding documentation spi/davinci: no wildcards in DT compatible property ARM: dts: mvebu: Convert mvebu device tree files to 64 bits ARM: dts: mvebu: introduce internal-regs node ARM: dts: mvebu: Convert all the mvebu files to use the range property ARM: dts: mvebu: move all peripherals inside soc ARM: dts: mvebu: fix cpus section indentation ARM: davinci: da850: add EHRPWM & ECAP DT node ARM/dts: OMAP3: fix pinctrl-single configuration ARM: dts: Add OMAP3430 SDP NOR flash memory binding ARM: dts: Add NOR flash bindings for OMAP2420 H4 ...
Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r--drivers/i2c/busses/i2c-mxs.c40
1 files changed, 3 insertions, 37 deletions
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index c67d89fc625..2039f230482 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -31,7 +31,6 @@
#include <linux/of_i2c.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
-#include <linux/fsl/mxs-dma.h>
#define DRIVER_NAME "mxs-i2c"
@@ -118,9 +117,7 @@ struct mxs_i2c_dev {
uint32_t timing1;
/* DMA support components */
- int dma_channel;
struct dma_chan *dmach;
- struct mxs_dma_data dma_data;
uint32_t pio_data[2];
uint32_t addr_data;
struct scatterlist sg_io[2];
@@ -581,21 +578,6 @@ static const struct i2c_algorithm mxs_i2c_algo = {
.functionality = mxs_i2c_func,
};
-static bool mxs_i2c_dma_filter(struct dma_chan *chan, void *param)
-{
- struct mxs_i2c_dev *i2c = param;
-
- if (!mxs_dma_is_apbx(chan))
- return false;
-
- if (chan->chan_id != i2c->dma_channel)
- return false;
-
- chan->private = &i2c->dma_data;
-
- return true;
-}
-
static void mxs_i2c_derive_timing(struct mxs_i2c_dev *i2c, int speed)
{
/* The I2C block clock run at 24MHz */
@@ -640,17 +622,6 @@ static int mxs_i2c_get_ofdata(struct mxs_i2c_dev *i2c)
struct device_node *node = dev->of_node;
int ret;
- /*
- * TODO: This is a temporary solution and should be changed
- * to use generic DMA binding later when the helpers get in.
- */
- ret = of_property_read_u32(node, "fsl,i2c-dma-channel",
- &i2c->dma_channel);
- if (ret) {
- dev_err(dev, "Failed to get DMA channel!\n");
- return -ENODEV;
- }
-
ret = of_property_read_u32(node, "clock-frequency", &speed);
if (ret) {
dev_warn(dev, "No I2C speed selected, using 100kHz\n");
@@ -670,8 +641,7 @@ static int mxs_i2c_probe(struct platform_device *pdev)
struct pinctrl *pinctrl;
struct resource *res;
resource_size_t res_size;
- int err, irq, dmairq;
- dma_cap_mask_t mask;
+ int err, irq;
pinctrl = devm_pinctrl_get_select_default(dev);
if (IS_ERR(pinctrl))
@@ -683,9 +653,8 @@ static int mxs_i2c_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- dmairq = platform_get_irq(pdev, 1);
- if (!res || irq < 0 || dmairq < 0)
+ if (!res || irq < 0)
return -ENOENT;
res_size = resource_size(res);
@@ -711,10 +680,7 @@ static int mxs_i2c_probe(struct platform_device *pdev)
}
/* Setup the DMA */
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
- i2c->dma_data.chan_irq = dmairq;
- i2c->dmach = dma_request_channel(mask, mxs_i2c_dma_filter, i2c);
+ i2c->dmach = dma_request_slave_channel(dev, "rx-tx");
if (!i2c->dmach) {
dev_err(dev, "Failed to request dma\n");
return -ENODEV;