dma: imx-dma: remove cpu_is_xxx by using platform_device_id
It changes the driver to use platform_device_id rather than cpu_is_xxx
to determine the controller type, and updates the platform code
accordingly.
As the result, mach/hardware.h inclusion gets removed from the driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: Vinod Koul <vinod.koul@linux.intel.com>
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 88e8a8d..a3a8270 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -29,7 +29,6 @@
#include <asm/irq.h>
#include <linux/platform_data/dma-imx.h>
-#include <mach/hardware.h>
#include "dmaengine.h"
#define IMXDMA_MAX_CHAN_DESCRIPTORS 16
@@ -167,6 +166,12 @@
int slot_2d;
};
+enum imx_dma_type {
+ IMX1_DMA,
+ IMX21_DMA,
+ IMX27_DMA,
+};
+
struct imxdma_engine {
struct device *dev;
struct device_dma_parameters dma_parms;
@@ -177,8 +182,40 @@
spinlock_t lock;
struct imx_dma_2d_config slots_2d[IMX_DMA_2D_SLOTS];
struct imxdma_channel channel[IMX_DMA_CHANNELS];
+ enum imx_dma_type devtype;
};
+static struct platform_device_id imx_dma_devtype[] = {
+ {
+ .name = "imx1-dma",
+ .driver_data = IMX1_DMA,
+ }, {
+ .name = "imx21-dma",
+ .driver_data = IMX21_DMA,
+ }, {
+ .name = "imx27-dma",
+ .driver_data = IMX27_DMA,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(platform, imx_dma_devtype);
+
+static inline int is_imx1_dma(struct imxdma_engine *imxdma)
+{
+ return imxdma->devtype == IMX1_DMA;
+}
+
+static inline int is_imx21_dma(struct imxdma_engine *imxdma)
+{
+ return imxdma->devtype == IMX21_DMA;
+}
+
+static inline int is_imx27_dma(struct imxdma_engine *imxdma)
+{
+ return imxdma->devtype == IMX27_DMA;
+}
+
static struct imxdma_channel *to_imxdma_chan(struct dma_chan *chan)
{
return container_of(chan, struct imxdma_channel, chan);
@@ -212,7 +249,9 @@
static int imxdma_hw_chain(struct imxdma_channel *imxdmac)
{
- if (cpu_is_mx27())
+ struct imxdma_engine *imxdma = imxdmac->imxdma;
+
+ if (is_imx27_dma(imxdma))
return imxdmac->hw_chaining;
else
return 0;
@@ -267,7 +306,7 @@
imx_dmav1_writel(imxdma, imx_dmav1_readl(imxdma, DMA_CCR(channel)) |
CCR_CEN | CCR_ACRPT, DMA_CCR(channel));
- if ((cpu_is_mx21() || cpu_is_mx27()) &&
+ if (!is_imx1_dma(imxdma) &&
d->sg && imxdma_hw_chain(imxdmac)) {
d->sg = sg_next(d->sg);
if (d->sg) {
@@ -436,7 +475,7 @@
struct imxdma_engine *imxdma = dev_id;
int i, disr;
- if (cpu_is_mx21() || cpu_is_mx27())
+ if (!is_imx1_dma(imxdma))
imxdma_err_handler(irq, dev_id);
disr = imx_dmav1_readl(imxdma, DMA_DISR);
@@ -967,6 +1006,8 @@
if (!imxdma)
return -ENOMEM;
+ imxdma->devtype = pdev->id_entry->driver_data;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
imxdma->base = devm_request_and_ioremap(&pdev->dev, res);
if (!imxdma->base)
@@ -990,7 +1031,7 @@
/* reset DMA module */
imx_dmav1_writel(imxdma, DCR_DRST, DMA_DCR);
- if (cpu_is_mx1()) {
+ if (is_imx1_dma(imxdma)) {
ret = devm_request_irq(&pdev->dev, irq,
dma_irq_handler, 0, "DMA", imxdma);
if (ret) {
@@ -1038,7 +1079,7 @@
for (i = 0; i < IMX_DMA_CHANNELS; i++) {
struct imxdma_channel *imxdmac = &imxdma->channel[i];
- if (cpu_is_mx21() || cpu_is_mx27()) {
+ if (!is_imx1_dma(imxdma)) {
ret = devm_request_irq(&pdev->dev, irq + i,
dma_irq_handler, 0, "DMA", imxdma);
if (ret) {
@@ -1118,6 +1159,7 @@
.driver = {
.name = "imx-dma",
},
+ .id_table = imx_dma_devtype,
.remove = __exit_p(imxdma_remove),
};