[PATCH v2 23/34] dma: imx-dma: retrieve MEM and IRQ from resources
Shawn Guo
shawn.guo at linaro.org
Thu Sep 20 02:45:36 EDT 2012
Retrieve MEM and IRQ from resources rather than directly using the
value by including machine header.
Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
Acked-by: Sascha Hauer <s.hauer at pengutronix.de>
Acked-by: Arnd Bergmann <arnd at arndb.de>
Cc: Vinod Koul <vinod.koul at linux.intel.com>
---
arch/arm/mach-imx/devices/devices-common.h | 3 ++-
arch/arm/mach-imx/devices/platform-imx-dma.c | 21 ++++++++++++++--
arch/arm/mach-imx/mm-imx1.c | 2 ++
arch/arm/mach-imx/mm-imx21.c | 2 +-
arch/arm/mach-imx/mm-imx27.c | 2 +-
drivers/dma/imx-dma.c | 35 +++++++++++++++-----------
6 files changed, 45 insertions(+), 20 deletions(-)
diff --git a/arch/arm/mach-imx/devices/devices-common.h b/arch/arm/mach-imx/devices/devices-common.h
index 73ae524..a330159 100644
--- a/arch/arm/mach-imx/devices/devices-common.h
+++ b/arch/arm/mach-imx/devices/devices-common.h
@@ -311,7 +311,8 @@ 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(void);
+struct platform_device *imx_add_imx_dma(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 c35c99d..f9003e4 100644
--- a/arch/arm/mach-imx/devices/platform-imx-dma.c
+++ b/arch/arm/mach-imx/devices/platform-imx-dma.c
@@ -8,10 +8,27 @@
*/
#include "devices-common.h"
-struct platform_device __init __maybe_unused *imx_add_imx_dma(void)
+struct platform_device __init __maybe_unused *imx_add_imx_dma(
+ resource_size_t iobase, int irq, int irq_err)
{
+ struct resource res[] = {
+ {
+ .start = iobase,
+ .end = iobase + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = irq,
+ .end = irq,
+ .flags = IORESOURCE_IRQ,
+ }, {
+ .start = irq_err,
+ .end = irq_err,
+ .flags = IORESOURCE_IRQ,
+ },
+ };
+
return platform_device_register_resndata(&mxc_ahb_bus,
- "imx-dma", -1, NULL, 0, NULL, 0);
+ "imx-dma", -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 118aa92..9de81bf 100644
--- a/arch/arm/mach-imx/mm-imx1.c
+++ b/arch/arm/mach-imx/mm-imx1.c
@@ -25,6 +25,7 @@
#include <mach/hardware.h>
#include "common.h"
+#include "devices/devices-common.h"
#include "iomux-v1.h"
static struct map_desc imx_io_desc[] __initdata = {
@@ -59,5 +60,6 @@ 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);
pinctrl_provide_dummies();
}
diff --git a/arch/arm/mach-imx/mm-imx21.c b/arch/arm/mach-imx/mm-imx21.c
index 0c24556..1c29515 100644
--- a/arch/arm/mach-imx/mm-imx21.c
+++ b/arch/arm/mach-imx/mm-imx21.c
@@ -90,7 +90,7 @@ 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();
+ imx_add_imx_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 3241314..d389f4a 100644
--- a/arch/arm/mach-imx/mm-imx27.c
+++ b/arch/arm/mach-imx/mm-imx27.c
@@ -91,7 +91,7 @@ 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();
+ imx_add_imx_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 64ba65b..a947ce2 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -959,23 +959,22 @@ static void imxdma_issue_pending(struct dma_chan *chan)
static int __init imxdma_probe(struct platform_device *pdev)
{
struct imxdma_engine *imxdma;
+ struct resource *res;
int ret, i;
-
+ int irq, irq_err;
imxdma = devm_kzalloc(&pdev->dev, sizeof(*imxdma), GFP_KERNEL);
if (!imxdma)
return -ENOMEM;
- if (cpu_is_mx1()) {
- imxdma->base = MX1_IO_ADDRESS(MX1_DMA_BASE_ADDR);
- } else if (cpu_is_mx21()) {
- imxdma->base = MX21_IO_ADDRESS(MX21_DMA_BASE_ADDR);
- } else if (cpu_is_mx27()) {
- imxdma->base = MX27_IO_ADDRESS(MX27_DMA_BASE_ADDR);
- } else {
- kfree(imxdma);
- return 0;
- }
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ imxdma->base = devm_request_and_ioremap(&pdev->dev, res);
+ if (!imxdma->base)
+ return -EADDRNOTAVAIL;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
imxdma->dma_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(imxdma->dma_ipg))
@@ -992,14 +991,20 @@ static int __init imxdma_probe(struct platform_device *pdev)
imx_dmav1_writel(imxdma, DCR_DRST, DMA_DCR);
if (cpu_is_mx1()) {
- ret = devm_request_irq(&pdev->dev, MX1_DMA_INT,
+ ret = devm_request_irq(&pdev->dev, irq,
dma_irq_handler, 0, "DMA", imxdma);
if (ret) {
dev_warn(imxdma->dev, "Can't register IRQ for DMA\n");
goto err;
}
- ret = devm_request_irq(&pdev->dev, MX1_DMA_ERR,
+ irq_err = platform_get_irq(pdev, 1);
+ if (irq_err < 0) {
+ ret = irq_err;
+ goto err;
+ }
+
+ ret = devm_request_irq(&pdev->dev, irq_err,
imxdma_err_handler, 0, "DMA", imxdma);
if (ret) {
dev_warn(imxdma->dev, "Can't register ERRIRQ for DMA\n");
@@ -1034,12 +1039,12 @@ static int __init imxdma_probe(struct platform_device *pdev)
struct imxdma_channel *imxdmac = &imxdma->channel[i];
if (cpu_is_mx21() || cpu_is_mx27()) {
- ret = devm_request_irq(&pdev->dev, MX2x_INT_DMACH0 + i,
+ ret = devm_request_irq(&pdev->dev, irq + i,
dma_irq_handler, 0, "DMA", imxdma);
if (ret) {
dev_warn(imxdma->dev, "Can't register IRQ %d "
"for DMA channel %d\n",
- MX2x_INT_DMACH0 + i, i);
+ irq + i, i);
goto err;
}
init_timer(&imxdmac->watchdog);
--
1.7.9.5
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