[PATCH v2 24/34] dma: imx-dma: remove cpu_is_xxx by using platform_device_id
Shawn Guo
shawn.guo at linaro.org
Thu Sep 20 02:45:37 EDT 2012
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 at linaro.org>
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
Acked-by: Arnd Bergmann <arnd at arndb.de>
Tested-by: Javier Martin <javier.martin at vista-silicon.com>
Cc: Vinod Koul <vinod.koul at linux.intel.com>
---
arch/arm/mach-imx/clk-imx1.c | 3 +-
arch/arm/mach-imx/clk-imx21.c | 4 +-
arch/arm/mach-imx/clk-imx27.c | 4 +-
arch/arm/mach-imx/devices/devices-common.h | 2 +-
arch/arm/mach-imx/devices/platform-imx-dma.c | 4 +-
arch/arm/mach-imx/mm-imx1.c | 3 +-
arch/arm/mach-imx/mm-imx21.c | 3 +-
arch/arm/mach-imx/mm-imx27.c | 3 +-
drivers/dma/imx-dma.c | 54 +++++++++++++++++++++++---
include/linux/platform_data/dma-imx.h | 4 +-
10 files changed, 66 insertions(+), 18 deletions(-)
diff --git a/arch/arm/mach-imx/clk-imx1.c b/arch/arm/mach-imx/clk-imx1.c
index 6b9407b..a453e11 100644
--- a/arch/arm/mach-imx/clk-imx1.c
+++ b/arch/arm/mach-imx/clk-imx1.c
@@ -83,7 +83,8 @@ int __init mx1_clocks_init(unsigned long fref)
pr_err("imx1 clk %d: register failed with %ld\n",
i, PTR_ERR(clk[i]));
- clk_register_clkdev(clk[dma_gate], "ahb", "imx-dma");
+ clk_register_clkdev(clk[dma_gate], "ahb", "imx1-dma");
+ clk_register_clkdev(clk[hclk], "ipg", "imx1-dma");
clk_register_clkdev(clk[mma_gate], "mma", NULL);
clk_register_clkdev(clk[usbd_gate], NULL, "imx_udc.0");
clk_register_clkdev(clk[per1], "per", "imx-gpt.0");
diff --git a/arch/arm/mach-imx/clk-imx21.c b/arch/arm/mach-imx/clk-imx21.c
index 96a4788..8aec572 100644
--- a/arch/arm/mach-imx/clk-imx21.c
+++ b/arch/arm/mach-imx/clk-imx21.c
@@ -163,8 +163,8 @@ int __init mx21_clocks_init(unsigned long lref, unsigned long href)
clk_register_clkdev(clk[usb_gate], "per", "imx21-hcd.0");
clk_register_clkdev(clk[usb_hclk_gate], "ahb", "imx21-hcd.0");
clk_register_clkdev(clk[nfc_gate], NULL, "imx21-nand.0");
- clk_register_clkdev(clk[dma_hclk_gate], "ahb", "imx-dma");
- clk_register_clkdev(clk[dma_gate], "ipg", "imx-dma");
+ clk_register_clkdev(clk[dma_hclk_gate], "ahb", "imx21-dma");
+ clk_register_clkdev(clk[dma_gate], "ipg", "imx21-dma");
clk_register_clkdev(clk[wdog_gate], NULL, "imx2-wdt.0");
clk_register_clkdev(clk[i2c_gate], NULL, "imx21-i2c.0");
clk_register_clkdev(clk[kpp_gate], NULL, "mxc-keypad");
diff --git a/arch/arm/mach-imx/clk-imx27.c b/arch/arm/mach-imx/clk-imx27.c
index 5ff5cf0..82cb785 100644
--- a/arch/arm/mach-imx/clk-imx27.c
+++ b/arch/arm/mach-imx/clk-imx27.c
@@ -242,8 +242,8 @@ int __init mx27_clocks_init(unsigned long fref)
clk_register_clkdev(clk[nfc_baud_gate], NULL, "imx27-nand.0");
clk_register_clkdev(clk[vpu_baud_gate], "per", "imx-vpu");
clk_register_clkdev(clk[vpu_ahb_gate], "ahb", "imx-vpu");
- clk_register_clkdev(clk[dma_ahb_gate], "ahb", "imx-dma");
- clk_register_clkdev(clk[dma_ipg_gate], "ipg", "imx-dma");
+ clk_register_clkdev(clk[dma_ahb_gate], "ahb", "imx27-dma");
+ clk_register_clkdev(clk[dma_ipg_gate], "ipg", "imx27-dma");
clk_register_clkdev(clk[fec_ipg_gate], "ipg", "imx27-fec.0");
clk_register_clkdev(clk[fec_ahb_gate], "ahb", "imx27-fec.0");
clk_register_clkdev(clk[wdog_ipg_gate], NULL, "imx2-wdt.0");
diff --git a/arch/arm/mach-imx/devices/devices-common.h b/arch/arm/mach-imx/devices/devices-common.h
index a330159..7f2698c 100644
--- a/arch/arm/mach-imx/devices/devices-common.h
+++ b/arch/arm/mach-imx/devices/devices-common.h
@@ -311,7 +311,7 @@ struct platform_device *__init imx_add_spi_imx(
const struct imx_spi_imx_data *data,
const struct spi_imx_master *pdata);
-struct platform_device *imx_add_imx_dma(resource_size_t iobase,
+struct platform_device *imx_add_imx_dma(char *name, resource_size_t iobase,
int irq, int irq_err);
struct platform_device *imx_add_imx_sdma(char *name,
resource_size_t iobase, int irq, struct sdma_platform_data *pdata);
diff --git a/arch/arm/mach-imx/devices/platform-imx-dma.c b/arch/arm/mach-imx/devices/platform-imx-dma.c
index f9003e4..ccdb5dc 100644
--- a/arch/arm/mach-imx/devices/platform-imx-dma.c
+++ b/arch/arm/mach-imx/devices/platform-imx-dma.c
@@ -8,7 +8,7 @@
*/
#include "devices-common.h"
-struct platform_device __init __maybe_unused *imx_add_imx_dma(
+struct platform_device __init __maybe_unused *imx_add_imx_dma(char *name,
resource_size_t iobase, int irq, int irq_err)
{
struct resource res[] = {
@@ -28,7 +28,7 @@ struct platform_device __init __maybe_unused *imx_add_imx_dma(
};
return platform_device_register_resndata(&mxc_ahb_bus,
- "imx-dma", -1, res, ARRAY_SIZE(res), NULL, 0);
+ name, -1, res, ARRAY_SIZE(res), NULL, 0);
}
struct platform_device __init __maybe_unused *imx_add_imx_sdma(char *name,
diff --git a/arch/arm/mach-imx/mm-imx1.c b/arch/arm/mach-imx/mm-imx1.c
index 9de81bf..79f6c0b 100644
--- a/arch/arm/mach-imx/mm-imx1.c
+++ b/arch/arm/mach-imx/mm-imx1.c
@@ -60,6 +60,7 @@ void __init imx1_soc_init(void)
MX1_GPIO_INT_PORTC, 0);
mxc_register_gpio("imx1-gpio", 3, MX1_GPIO4_BASE_ADDR, SZ_256,
MX1_GPIO_INT_PORTD, 0);
- imx_add_imx_dma(MX1_DMA_BASE_ADDR, MX1_DMA_INT, MX1_DMA_ERR);
+ imx_add_imx_dma("imx1-dma", MX1_DMA_BASE_ADDR,
+ MX1_DMA_INT, MX1_DMA_ERR);
pinctrl_provide_dummies();
}
diff --git a/arch/arm/mach-imx/mm-imx21.c b/arch/arm/mach-imx/mm-imx21.c
index 1c29515..3b97ea6 100644
--- a/arch/arm/mach-imx/mm-imx21.c
+++ b/arch/arm/mach-imx/mm-imx21.c
@@ -90,7 +90,8 @@ void __init imx21_soc_init(void)
mxc_register_gpio("imx21-gpio", 5, MX21_GPIO6_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
pinctrl_provide_dummies();
- imx_add_imx_dma(MX21_DMA_BASE_ADDR, MX21_INT_DMACH0, 0); /* No ERR irq */
+ imx_add_imx_dma("imx21-dma", MX21_DMA_BASE_ADDR,
+ MX21_INT_DMACH0, 0); /* No ERR irq */
platform_device_register_simple("imx21-audmux", 0, imx21_audmux_res,
ARRAY_SIZE(imx21_audmux_res));
}
diff --git a/arch/arm/mach-imx/mm-imx27.c b/arch/arm/mach-imx/mm-imx27.c
index d389f4a..91e8da8 100644
--- a/arch/arm/mach-imx/mm-imx27.c
+++ b/arch/arm/mach-imx/mm-imx27.c
@@ -91,7 +91,8 @@ void __init imx27_soc_init(void)
mxc_register_gpio("imx21-gpio", 5, MX27_GPIO6_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
pinctrl_provide_dummies();
- imx_add_imx_dma(MX27_DMA_BASE_ADDR, MX27_INT_DMACH0, 0); /* No ERR irq */
+ imx_add_imx_dma("imx27-dma", MX27_DMA_BASE_ADDR,
+ MX27_INT_DMACH0, 0); /* No ERR irq */
/* imx27 has the imx21 type audmux */
platform_device_register_simple("imx21-audmux", 0, imx27_audmux_res,
ARRAY_SIZE(imx27_audmux_res));
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index a947ce2..960c88b 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 @@ struct imxdma_channel {
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 @@ struct imxdma_engine {
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 unsigned imx_dmav1_readl(struct imxdma_engine *imxdma, unsigned offset)
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 @@ static void imxdma_enable_hw(struct imxdma_desc *d)
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 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id)
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 @@ static int __init imxdma_probe(struct platform_device *pdev)
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 @@ static int __init imxdma_probe(struct platform_device *pdev)
/* 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 @@ static int __init imxdma_probe(struct platform_device *pdev)
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 @@ static struct platform_driver imxdma_driver = {
.driver = {
.name = "imx-dma",
},
+ .id_table = imx_dma_devtype,
.remove = __exit_p(imxdma_remove),
};
diff --git a/include/linux/platform_data/dma-imx.h b/include/linux/platform_data/dma-imx.h
index 1b90803..f6d30cc 100644
--- a/include/linux/platform_data/dma-imx.h
+++ b/include/linux/platform_data/dma-imx.h
@@ -61,7 +61,9 @@ static inline int imx_dma_is_ipu(struct dma_chan *chan)
static inline int imx_dma_is_general_purpose(struct dma_chan *chan)
{
return strstr(dev_name(chan->device->dev), "sdma") ||
- !strcmp(dev_name(chan->device->dev), "imx-dma");
+ !strcmp(dev_name(chan->device->dev), "imx1-dma") ||
+ !strcmp(dev_name(chan->device->dev), "imx21-dma") ||
+ !strcmp(dev_name(chan->device->dev), "imx27-dma");
}
#endif
--
1.7.9.5
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