media: mx2_camera: 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>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: linux-media@vger.kernel.org

5 files changed, 85 insertions, 35 deletions

diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c
index f0f82f204de7..2add1ea22d44 100644
--- a/arch/arm/mach-imx/clk-imx25.c
+++ b/arch/arm/mach-imx/clk-imx25.c
@@ -231,9 +231,9 @@ int __init mx25_clocks_init(void)
         clk_register_clkdev(clk[esdhc2_ipg_per], "per", "sdhci-esdhc-imx25.1");
         clk_register_clkdev(clk[esdhc2_ipg], "ipg", "sdhci-esdhc-imx25.1");
         clk_register_clkdev(clk[esdhc2_ahb], "ahb", "sdhci-esdhc-imx25.1");
-        clk_register_clkdev(clk[csi_ipg_per], "per", "mx2-camera.0");
-        clk_register_clkdev(clk[csi_ipg], "ipg", "mx2-camera.0");
-        clk_register_clkdev(clk[csi_ahb], "ahb", "mx2-camera.0");
+        clk_register_clkdev(clk[csi_ipg_per], "per", "imx25-camera.0");
+        clk_register_clkdev(clk[csi_ipg], "ipg", "imx25-camera.0");
+        clk_register_clkdev(clk[csi_ahb], "ahb", "imx25-camera.0");
         clk_register_clkdev(clk[dummy], "audmux", NULL);
         clk_register_clkdev(clk[can1_ipg], NULL, "flexcan.0");
         clk_register_clkdev(clk[can2_ipg], NULL, "flexcan.1");
diff --git a/arch/arm/mach-imx/clk-imx27.c b/arch/arm/mach-imx/clk-imx27.c
index a5f0e3b6dec6..6170c03d4905 100644
--- a/arch/arm/mach-imx/clk-imx27.c
+++ b/arch/arm/mach-imx/clk-imx27.c
@@ -224,7 +224,7 @@ int __init mx27_clocks_init(unsigned long fref)
         clk_register_clkdev(clk[per3_gate], "per", "imx-fb.0");
         clk_register_clkdev(clk[lcdc_ipg_gate], "ipg", "imx-fb.0");
         clk_register_clkdev(clk[lcdc_ahb_gate], "ahb", "imx-fb.0");
-        clk_register_clkdev(clk[csi_ahb_gate], "ahb", "mx2-camera.0");
+        clk_register_clkdev(clk[csi_ahb_gate], "ahb", "imx27-camera.0");
         clk_register_clkdev(clk[usb_div], "per", "fsl-usb2-udc");
         clk_register_clkdev(clk[usb_ipg_gate], "ipg", "fsl-usb2-udc");
         clk_register_clkdev(clk[usb_ahb_gate], "ahb", "fsl-usb2-udc");
@@ -251,8 +251,8 @@ int __init mx27_clocks_init(unsigned long fref)
         clk_register_clkdev(clk[i2c2_ipg_gate], NULL, "imx21-i2c.1");
         clk_register_clkdev(clk[owire_ipg_gate], NULL, "mxc_w1.0");
         clk_register_clkdev(clk[kpp_ipg_gate], NULL, "imx-keypad");
-        clk_register_clkdev(clk[emma_ahb_gate], "emma-ahb", "mx2-camera.0");
-        clk_register_clkdev(clk[emma_ipg_gate], "emma-ipg", "mx2-camera.0");
+        clk_register_clkdev(clk[emma_ahb_gate], "emma-ahb", "imx27-camera.0");
+        clk_register_clkdev(clk[emma_ipg_gate], "emma-ipg", "imx27-camera.0");
         clk_register_clkdev(clk[emma_ahb_gate], "ahb", "m2m-emmaprp.0");
         clk_register_clkdev(clk[emma_ipg_gate], "ipg", "m2m-emmaprp.0");
         clk_register_clkdev(clk[iim_ipg_gate], "iim", NULL);
diff --git a/arch/arm/mach-imx/devices/devices-common.h b/arch/arm/mach-imx/devices/devices-common.h
index 36eb3f09f5d7..d213da9dfd93 100644
--- a/arch/arm/mach-imx/devices/devices-common.h
+++ b/arch/arm/mach-imx/devices/devices-common.h
@@ -220,6 +220,7 @@ struct platform_device *__init imx_add_mx1_camera(
 
 #include <linux/platform_data/camera-mx2.h>
 struct imx_mx2_camera_data {
+        const char *devid;
         resource_size_t iobasecsi;
         resource_size_t iosizecsi;
         resource_size_t irqcsi;
diff --git a/arch/arm/mach-imx/devices/platform-mx2-camera.c b/arch/arm/mach-imx/devices/platform-mx2-camera.c
index 9ad5b2d97054..b88877d54d7f 100644
--- a/arch/arm/mach-imx/devices/platform-mx2-camera.c
+++ b/arch/arm/mach-imx/devices/platform-mx2-camera.c
@@ -9,14 +9,16 @@
 #include <mach/hardware.h>
 #include "devices-common.h"
 
-#define imx_mx2_camera_data_entry_single(soc)                           \
+#define imx_mx2_camera_data_entry_single(soc, _devid)                   \
         {                                                               \
+                .devid = _devid,                                        \
                 .iobasecsi = soc ## _CSI_BASE_ADDR,                     \
                 .iosizecsi = SZ_4K,                                     \
                 .irqcsi = soc ## _INT_CSI,                              \
         }
-#define imx_mx2_camera_data_entry_single_emma(soc)                      \
+#define imx_mx2_camera_data_entry_single_emma(soc, _devid)              \
         {                                                               \
+                .devid = _devid,                                        \
                 .iobasecsi = soc ## _CSI_BASE_ADDR,                     \
                 .iosizecsi = SZ_32,                                     \
                 .irqcsi = soc ## _INT_CSI,                              \
@@ -27,12 +29,12 @@
 
 #ifdef CONFIG_SOC_IMX25
 const struct imx_mx2_camera_data imx25_mx2_camera_data __initconst =
-        imx_mx2_camera_data_entry_single(MX25);
+        imx_mx2_camera_data_entry_single(MX25, "imx25-camera");
 #endif /* ifdef CONFIG_SOC_IMX25 */
 
 #ifdef CONFIG_SOC_IMX27
 const struct imx_mx2_camera_data imx27_mx2_camera_data __initconst =
-        imx_mx2_camera_data_entry_single_emma(MX27);
+        imx_mx2_camera_data_entry_single_emma(MX27, "imx27-camera");
 #endif /* ifdef CONFIG_SOC_IMX27 */
 
 struct platform_device *__init imx_add_mx2_camera(
@@ -58,7 +60,7 @@ struct platform_device *__init imx_add_mx2_camera(
                         .flags = IORESOURCE_IRQ,
                 },
         };
-        return imx_add_platform_device_dmamask("mx2-camera", 0,
+        return imx_add_platform_device_dmamask(data->devid, 0,
                         res, data->iobaseemmaprp ? 4 : 2,
                         pdata, sizeof(*pdata), DMA_BIT_MASK(32));
 }
diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c
index 9fd9d1c5b218..e575ae82771d 100644
--- a/drivers/media/platform/soc_camera/mx2_camera.c
+++ b/drivers/media/platform/soc_camera/mx2_camera.c
@@ -41,7 +41,6 @@
 #include <linux/videodev2.h>
 
 #include <linux/platform_data/camera-mx2.h>
-#include <mach/hardware.h>
 
 #include <asm/dma.h>
 
@@ -121,11 +120,13 @@
 
 #define CSICR1                  0x00
 #define CSICR2                  0x04
-#define CSISR                   (cpu_is_mx27() ? 0x08 : 0x18)
+#define CSISR_IMX25             0x18
+#define CSISR_IMX27             0x08
 #define CSISTATFIFO             0x0c
 #define CSIRFIFO                0x10
 #define CSIRXCNT                0x14
-#define CSICR3                  (cpu_is_mx27() ? 0x1C : 0x08)
+#define CSICR3_IMX25            0x08
+#define CSICR3_IMX27            0x1c
 #define CSIDMASA_STATFIFO       0x20
 #define CSIDMATA_STATFIFO       0x24
 #define CSIDMASA_FB1            0x28
@@ -268,6 +269,11 @@ struct mx2_buffer {
         struct mx2_buf_internal         internal;
 };
 
+enum mx2_camera_type {
+        IMX25_CAMERA,
+        IMX27_CAMERA,
+};
+
 struct mx2_camera_dev {
         struct device           *dev;
         struct soc_camera_host  soc_host;
@@ -291,6 +297,9 @@ struct mx2_camera_dev {
         struct mx2_buffer       *fb2_active;
 
         u32                     csicr1;
+        u32                     reg_csisr;
+        u32                     reg_csicr3;
+        enum mx2_camera_type    devtype;
 
         struct mx2_buf_internal buf_discard[2];
         void                    *discard_buffer;
@@ -303,6 +312,29 @@ struct mx2_camera_dev {
         struct vb2_alloc_ctx    *alloc_ctx;
 };
 
+static struct platform_device_id mx2_camera_devtype[] = {
+        {
+                .name = "imx25-camera",
+                .driver_data = IMX25_CAMERA,
+        }, {
+                .name = "imx27-camera",
+                .driver_data = IMX27_CAMERA,
+        }, {
+                /* sentinel */
+        }
+};
+MODULE_DEVICE_TABLE(platform, mx2_camera_devtype);
+
+static inline int is_imx25_camera(struct mx2_camera_dev *pcdev)
+{
+        return pcdev->devtype == IMX25_CAMERA;
+}
+
+static inline int is_imx27_camera(struct mx2_camera_dev *pcdev)
+{
+        return pcdev->devtype == IMX27_CAMERA;
+}
+
 static struct mx2_buffer *mx2_ibuf_to_buf(struct mx2_buf_internal *int_buf)
 {
         return container_of(int_buf, struct mx2_buffer, internal);
@@ -434,9 +466,9 @@ static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev)
 
         clk_disable_unprepare(pcdev->clk_csi);
         writel(0, pcdev->base_csi + CSICR1);
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 writel(0, pcdev->base_emma + PRP_CNTL);
-        } else if (cpu_is_mx25()) {
+        } else if (is_imx25_camera(pcdev)) {
                 spin_lock_irqsave(&pcdev->lock, flags);
                 pcdev->fb1_active = NULL;
                 pcdev->fb2_active = NULL;
@@ -466,7 +498,7 @@ static int mx2_camera_add_device(struct soc_camera_device *icd)
 
         csicr1 = CSICR1_MCLKEN;
 
-        if (cpu_is_mx27())
+        if (is_imx27_camera(pcdev))
                 csicr1 |= CSICR1_PRP_IF_EN | CSICR1_FCC |
                         CSICR1_RXFF_LEVEL(0);
 
@@ -542,7 +574,7 @@ out:
 static irqreturn_t mx25_camera_irq(int irq_csi, void *data)
 {
         struct mx2_camera_dev *pcdev = data;
-        u32 status = readl(pcdev->base_csi + CSISR);
+        u32 status = readl(pcdev->base_csi + pcdev->reg_csisr);
 
         if (status & CSISR_DMA_TSF_FB1_INT)
                 mx25_camera_frame_done(pcdev, 1, MX2_STATE_DONE);
@@ -551,7 +583,7 @@ static irqreturn_t mx25_camera_irq(int irq_csi, void *data)
 
         /* FIXME: handle CSISR_RFF_OR_INT */
 
-        writel(status, pcdev->base_csi + CSISR);
+        writel(status, pcdev->base_csi + pcdev->reg_csisr);
 
         return IRQ_HANDLED;
 }
@@ -636,7 +668,7 @@ static void mx2_videobuf_queue(struct vb2_buffer *vb)
         buf->state = MX2_STATE_QUEUED;
         list_add_tail(&buf->internal.queue, &pcdev->capture);
 
-        if (cpu_is_mx25()) {
+        if (is_imx25_camera(pcdev)) {
                 u32 csicr3, dma_inten = 0;
 
                 if (pcdev->fb1_active == NULL) {
@@ -655,20 +687,20 @@ static void mx2_videobuf_queue(struct vb2_buffer *vb)
                         list_del(&buf->internal.queue);
                         buf->state = MX2_STATE_ACTIVE;
 
-                        csicr3 = readl(pcdev->base_csi + CSICR3);
+                        csicr3 = readl(pcdev->base_csi + pcdev->reg_csicr3);
 
                         /* Reflash DMA */
                         writel(csicr3 | CSICR3_DMA_REFLASH_RFF,
-                                        pcdev->base_csi + CSICR3);
+                                        pcdev->base_csi + pcdev->reg_csicr3);
 
                         /* clear & enable interrupts */
-                        writel(dma_inten, pcdev->base_csi + CSISR);
+                        writel(dma_inten, pcdev->base_csi + pcdev->reg_csisr);
                         pcdev->csicr1 |= dma_inten;
                         writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
 
                         /* enable DMA */
                         csicr3 |= CSICR3_DMA_REQ_EN_RFF | CSICR3_RXFF_LEVEL(1);
-                        writel(csicr3, pcdev->base_csi + CSICR3);
+                        writel(csicr3, pcdev->base_csi + pcdev->reg_csicr3);
                 }
         }
 
@@ -712,7 +744,7 @@ static void mx2_videobuf_release(struct vb2_buffer *vb)
          */
 
         spin_lock_irqsave(&pcdev->lock, flags);
-        if (cpu_is_mx25() && buf->state == MX2_STATE_ACTIVE) {
+        if (is_imx25_camera(pcdev) && buf->state == MX2_STATE_ACTIVE) {
                 if (pcdev->fb1_active == buf) {
                         pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN;
                         writel(0, pcdev->base_csi + CSIDMASA_FB1);
@@ -835,7 +867,7 @@ static int mx2_start_streaming(struct vb2_queue *q, unsigned int count)
         unsigned long phys;
         int bytesperline;
 
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 unsigned long flags;
                 if (count < 2)
                         return -EINVAL;
@@ -930,7 +962,7 @@ static int mx2_stop_streaming(struct vb2_queue *q)
         void *b;
         u32 cntl;
 
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 spin_lock_irqsave(&pcdev->lock, flags);
 
                 cntl = readl(pcdev->base_emma + PRP_CNTL);
@@ -1082,11 +1114,11 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
         if (bytesperline < 0)
                 return bytesperline;
 
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 ret = mx27_camera_emma_prp_reset(pcdev);
                 if (ret)
                         return ret;
-        } else if (cpu_is_mx25()) {
+        } else if (is_imx25_camera(pcdev)) {
                 writel((bytesperline * icd->user_height) >> 2,
                                 pcdev->base_csi + CSIRXCNT);
                 writel((bytesperline << 16) | icd->user_height,
@@ -1392,7 +1424,7 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd,
         /* FIXME: implement MX27 limits */
 
         /* limit to MX25 hardware capabilities */
-        if (cpu_is_mx25()) {
+        if (is_imx25_camera(pcdev)) {
                 if (xlate->host_fmt->bits_per_sample <= 8)
                         width_limit = 0xffff * 4;
                 else
@@ -1726,6 +1758,20 @@ static int __devinit mx2_camera_probe(struct platform_device *pdev)
                 goto exit;
         }
 
+        pcdev->devtype = pdev->id_entry->driver_data;
+        switch (pcdev->devtype) {
+        case IMX25_CAMERA:
+                pcdev->reg_csisr = CSISR_IMX25;
+                pcdev->reg_csicr3 = CSICR3_IMX25;
+                break;
+        case IMX27_CAMERA:
+                pcdev->reg_csisr = CSISR_IMX27;
+                pcdev->reg_csicr3 = CSICR3_IMX27;
+                break;
+        default:
+                break;
+        }
+
         pcdev->clk_csi = devm_clk_get(&pdev->dev, "ahb");
         if (IS_ERR(pcdev->clk_csi)) {
                 dev_err(&pdev->dev, "Could not get csi clock\n");
@@ -1763,7 +1809,7 @@ static int __devinit mx2_camera_probe(struct platform_device *pdev)
         pcdev->dev = &pdev->dev;
         platform_set_drvdata(pdev, pcdev);
 
-        if (cpu_is_mx25()) {
+        if (is_imx25_camera(pcdev)) {
                 err = devm_request_irq(&pdev->dev, irq_csi, mx25_camera_irq, 0,
                                        MX2_CAM_DRV_NAME, pcdev);
                 if (err) {
@@ -1772,7 +1818,7 @@ static int __devinit mx2_camera_probe(struct platform_device *pdev)
                 }
         }
 
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 err = mx27_camera_emma_init(pdev);
                 if (err)
                         goto exit;
@@ -1789,7 +1835,7 @@ static int __devinit mx2_camera_probe(struct platform_device *pdev)
         pcdev->soc_host.priv            = pcdev;
         pcdev->soc_host.v4l2_dev.dev    = &pdev->dev;
         pcdev->soc_host.nr              = pdev->id;
-        if (cpu_is_mx25())
+        if (is_imx25_camera(pcdev))
                 pcdev->soc_host.capabilities = SOCAM_HOST_CAP_STRIDE;
 
         pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
@@ -1809,7 +1855,7 @@ static int __devinit mx2_camera_probe(struct platform_device *pdev)
 exit_free_emma:
         vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
 eallocctx:
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 clk_disable_unprepare(pcdev->clk_emma_ipg);
                 clk_disable_unprepare(pcdev->clk_emma_ahb);
         }
@@ -1827,7 +1873,7 @@ static int __devexit mx2_camera_remove(struct platform_device *pdev)
 
         vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
 
-        if (cpu_is_mx27()) {
+        if (is_imx27_camera(pcdev)) {
                 clk_disable_unprepare(pcdev->clk_emma_ipg);
                 clk_disable_unprepare(pcdev->clk_emma_ahb);
         }
@@ -1841,6 +1887,7 @@ static struct platform_driver mx2_camera_driver = {
         .driver         = {
                 .name   = MX2_CAM_DRV_NAME,
         },
+        .id_table       = mx2_camera_devtype,
         .remove         = __devexit_p(mx2_camera_remove),
 };