forked from luck/tmp_suning_uos_patched
[media] V4L: sh_mobile_csi2: switch away from using the soc-camera bus notifier
This moves us one more step closer to eliminating the soc-camera bus and devices on it. Besides, as a side effect, CSI-2 runtime PM on sh-mobile secomes finer grained now: we only have to power on the interface, when the device nodes are open. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski
Mauro Carvalho Chehab
parent
91c7953005
commit
6b526fed0e
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@ -957,19 +957,16 @@ static struct resource csi2_resources[] = {
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},
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};
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static struct platform_device csi2_device = {
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.name = "sh-mobile-csi2",
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static struct sh_mobile_ceu_companion csi2 = {
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.id = 0,
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.num_resources = ARRAY_SIZE(csi2_resources),
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.resource = csi2_resources,
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.dev = {
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.platform_data = &csi2_info,
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},
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};
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static struct sh_mobile_ceu_info sh_mobile_ceu_info = {
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.flags = SH_CEU_FLAG_USE_8BIT_BUS,
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.csi2_dev = &csi2_device.dev,
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.csi2 = &csi2,
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};
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static struct resource ceu_resources[] = {
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@ -1013,7 +1010,6 @@ static struct platform_device *ap4evb_devices[] __initdata = {
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&lcdc1_device,
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&lcdc_device,
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&hdmi_device,
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&csi2_device,
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&ceu_device,
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&ap4evb_camera,
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&meram_device,
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@ -38,6 +38,7 @@
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#include <media/v4l2-dev.h>
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#include <media/soc_camera.h>
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#include <media/sh_mobile_ceu.h>
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#include <media/sh_mobile_csi2.h>
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#include <media/videobuf2-dma-contig.h>
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#include <media/v4l2-mediabus.h>
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#include <media/soc_mediabus.h>
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@ -95,6 +96,7 @@ struct sh_mobile_ceu_buffer {
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struct sh_mobile_ceu_dev {
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struct soc_camera_host ici;
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struct soc_camera_device *icd;
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struct platform_device *csi2_pdev;
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unsigned int irq;
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void __iomem *base;
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@ -498,11 +500,26 @@ static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)
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return IRQ_HANDLED;
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}
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static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev)
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{
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struct v4l2_subdev *sd;
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if (!pcdev->csi2_pdev)
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return NULL;
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v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev)
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if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd))
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return sd;
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return NULL;
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}
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/* Called with .video_lock held */
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static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
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{
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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struct v4l2_subdev *csi2_sd;
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int ret;
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if (pcdev->icd)
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@ -515,8 +532,16 @@ static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
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pm_runtime_get_sync(ici->v4l2_dev.dev);
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ret = sh_mobile_ceu_soft_reset(pcdev);
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if (!ret)
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csi2_sd = find_csi2(pcdev);
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ret = v4l2_subdev_call(csi2_sd, core, s_power, 1);
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if (ret != -ENODEV && ret != -ENOIOCTLCMD && ret < 0) {
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pm_runtime_put_sync(ici->v4l2_dev.dev);
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} else {
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pcdev->icd = icd;
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ret = 0;
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}
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return ret;
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}
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@ -526,9 +551,11 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
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{
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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struct v4l2_subdev *csi2_sd = find_csi2(pcdev);
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BUG_ON(icd != pcdev->icd);
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v4l2_subdev_call(csi2_sd, core, s_power, 0);
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/* disable capture, disable interrupts */
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ceu_write(pcdev, CEIER, 0);
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sh_mobile_ceu_soft_reset(pcdev);
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@ -640,7 +667,7 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd)
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}
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/* CSI2 special configuration */
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if (pcdev->pdata->csi2_dev) {
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if (pcdev->pdata->csi2) {
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in_width = ((in_width - 2) * 2);
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left_offset *= 2;
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}
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@ -782,7 +809,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
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value |= pcdev->is_16bit ? 1 << 12 : 0;
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/* CSI2 mode */
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if (pcdev->pdata->csi2_dev)
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if (pcdev->pdata->csi2)
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value |= 3 << 12;
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ceu_write(pcdev, CAMCR, value);
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@ -920,7 +947,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int
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return 0;
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}
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if (!pcdev->pdata->csi2_dev) {
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if (!pcdev->pdata->csi2) {
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ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample);
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if (ret < 0)
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return 0;
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@ -1943,7 +1970,7 @@ static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
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.completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion),
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.notifier.notifier_call = bus_notify,
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};
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struct device *csi2;
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struct sh_mobile_ceu_companion *csi2;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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irq = platform_get_irq(pdev, 0);
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@ -2016,26 +2043,61 @@ static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
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pcdev->ici.drv_name = dev_name(&pdev->dev);
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pcdev->ici.ops = &sh_mobile_ceu_host_ops;
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pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
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if (IS_ERR(pcdev->alloc_ctx)) {
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err = PTR_ERR(pcdev->alloc_ctx);
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goto exit_free_clk;
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}
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err = soc_camera_host_register(&pcdev->ici);
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if (err)
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goto exit_free_ctx;
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/* CSI2 interfacing */
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csi2 = pcdev->pdata->csi2_dev;
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csi2 = pcdev->pdata->csi2;
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if (csi2) {
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wait.dev = csi2;
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struct platform_device *csi2_pdev =
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platform_device_alloc("sh-mobile-csi2", csi2->id);
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struct sh_csi2_pdata *csi2_pdata = csi2->platform_data;
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if (!csi2_pdev) {
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err = -ENOMEM;
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goto exit_host_unregister;
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}
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pcdev->csi2_pdev = csi2_pdev;
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err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata));
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if (err < 0)
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goto exit_pdev_put;
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csi2_pdata = csi2_pdev->dev.platform_data;
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csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev;
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csi2_pdev->resource = csi2->resource;
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csi2_pdev->num_resources = csi2->num_resources;
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err = platform_device_add(csi2_pdev);
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if (err < 0)
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goto exit_pdev_put;
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wait.dev = &csi2_pdev->dev;
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err = bus_register_notifier(&platform_bus_type, &wait.notifier);
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if (err < 0)
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goto exit_free_clk;
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goto exit_pdev_unregister;
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/*
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* From this point the driver module will not unload, until
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* we complete the completion.
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*/
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if (!csi2->driver) {
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if (!csi2_pdev->dev.driver) {
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complete(&wait.completion);
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/* Either too late, or probing failed */
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bus_unregister_notifier(&platform_bus_type, &wait.notifier);
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err = -ENXIO;
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goto exit_free_clk;
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goto exit_pdev_unregister;
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}
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/*
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@ -2044,34 +2106,28 @@ static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
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* the "owner" is safe!
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*/
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err = try_module_get(csi2->driver->owner);
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err = try_module_get(csi2_pdev->dev.driver->owner);
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/* Let notifier complete, if it has been locked */
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complete(&wait.completion);
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bus_unregister_notifier(&platform_bus_type, &wait.notifier);
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if (!err) {
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err = -ENODEV;
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goto exit_free_clk;
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goto exit_pdev_unregister;
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}
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}
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pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
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if (IS_ERR(pcdev->alloc_ctx)) {
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err = PTR_ERR(pcdev->alloc_ctx);
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goto exit_module_put;
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}
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err = soc_camera_host_register(&pcdev->ici);
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if (err)
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goto exit_free_ctx;
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return 0;
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exit_pdev_unregister:
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platform_device_del(pcdev->csi2_pdev);
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exit_pdev_put:
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pcdev->csi2_pdev->resource = NULL;
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platform_device_put(pcdev->csi2_pdev);
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exit_host_unregister:
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soc_camera_host_unregister(&pcdev->ici);
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exit_free_ctx:
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vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
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exit_module_put:
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if (csi2 && csi2->driver)
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module_put(csi2->driver->owner);
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exit_free_clk:
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pm_runtime_disable(&pdev->dev);
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free_irq(pcdev->irq, pcdev);
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@ -2091,7 +2147,7 @@ static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev)
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struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
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struct sh_mobile_ceu_dev *pcdev = container_of(soc_host,
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struct sh_mobile_ceu_dev, ici);
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struct device *csi2 = pcdev->pdata->csi2_dev;
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struct platform_device *csi2_pdev = pcdev->csi2_pdev;
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soc_camera_host_unregister(soc_host);
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pm_runtime_disable(&pdev->dev);
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@ -2100,8 +2156,13 @@ static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev)
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dma_release_declared_memory(&pdev->dev);
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iounmap(pcdev->base);
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vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
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if (csi2 && csi2->driver)
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module_put(csi2->driver->owner);
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if (csi2_pdev && csi2_pdev->dev.driver) {
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struct module *csi2_drv = csi2_pdev->dev.driver->owner;
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platform_device_del(csi2_pdev);
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csi2_pdev->resource = NULL;
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platform_device_put(csi2_pdev);
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module_put(csi2_drv);
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}
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kfree(pcdev);
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return 0;
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@ -16,6 +16,7 @@
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <media/sh_mobile_ceu.h>
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#include <media/sh_mobile_csi2.h>
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#include <media/soc_camera.h>
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#include <media/v4l2-common.h>
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@ -33,7 +34,6 @@
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struct sh_csi2 {
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struct v4l2_subdev subdev;
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struct list_head list;
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struct notifier_block notifier;
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unsigned int irq;
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void __iomem *base;
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struct platform_device *pdev;
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@ -132,13 +132,6 @@ static struct v4l2_subdev_video_ops sh_csi2_subdev_video_ops = {
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.try_mbus_fmt = sh_csi2_try_fmt,
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};
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static struct v4l2_subdev_core_ops sh_csi2_subdev_core_ops;
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static struct v4l2_subdev_ops sh_csi2_subdev_ops = {
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.core = &sh_csi2_subdev_core_ops,
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.video = &sh_csi2_subdev_video_ops,
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};
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static void sh_csi2_hwinit(struct sh_csi2 *priv)
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{
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struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
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@ -186,35 +179,31 @@ static unsigned long sh_csi2_query_bus_param(struct soc_camera_device *icd)
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return soc_camera_apply_sensor_flags(icl, flags);
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}
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static int sh_csi2_notify(struct notifier_block *nb,
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unsigned long action, void *data)
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static int sh_csi2_client_connect(struct sh_csi2 *priv)
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{
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struct device *dev = data;
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struct soc_camera_device *icd = to_soc_camera_dev(dev);
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struct v4l2_device *v4l2_dev = dev_get_drvdata(dev->parent);
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struct sh_csi2 *priv =
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container_of(nb, struct sh_csi2, notifier);
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struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
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int ret, i;
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struct v4l2_subdev *sd, *csi2_sd = &priv->subdev;
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struct soc_camera_device *icd = NULL;
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struct device *dev = v4l2_get_subdevdata(&priv->subdev);
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int i;
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v4l2_device_for_each_subdev(sd, csi2_sd->v4l2_dev)
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if (sd->grp_id) {
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icd = (struct soc_camera_device *)sd->grp_id;
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break;
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}
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if (!icd)
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return -EINVAL;
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for (i = 0; i < pdata->num_clients; i++)
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if (&pdata->clients[i].pdev->dev == icd->pdev)
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break;
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dev_dbg(dev, "%s(%p): action = %lu, found #%d\n", __func__, dev, action, i);
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dev_dbg(dev, "%s(%p): found #%d\n", __func__, dev, i);
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if (i == pdata->num_clients)
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return NOTIFY_DONE;
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switch (action) {
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case BUS_NOTIFY_BOUND_DRIVER:
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snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s%s",
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dev_name(v4l2_dev->dev), ".mipi-csi");
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priv->subdev.grp_id = (long)icd;
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ret = v4l2_device_register_subdev(v4l2_dev, &priv->subdev);
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dev_dbg(dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret);
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if (ret < 0)
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return NOTIFY_DONE;
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return -ENODEV;
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priv->client = pdata->clients + i;
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@ -223,12 +212,21 @@ static int sh_csi2_notify(struct notifier_block *nb,
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icd->ops->set_bus_param = sh_csi2_set_bus_param;
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icd->ops->query_bus_param = sh_csi2_query_bus_param;
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pm_runtime_get_sync(v4l2_get_subdevdata(&priv->subdev));
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csi2_sd->grp_id = (long)icd;
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pm_runtime_get_sync(dev);
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sh_csi2_hwinit(priv);
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break;
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case BUS_NOTIFY_UNBIND_DRIVER:
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return 0;
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}
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static void sh_csi2_client_disconnect(struct sh_csi2 *priv)
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{
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struct soc_camera_device *icd = (struct soc_camera_device *)priv->subdev.grp_id;
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priv->client = NULL;
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priv->subdev.grp_id = 0;
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/* Driver is about to be unbound */
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icd->ops->set_bus_param = priv->set_bus_param;
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@ -236,15 +234,29 @@ static int sh_csi2_notify(struct notifier_block *nb,
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priv->set_bus_param = NULL;
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priv->query_bus_param = NULL;
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v4l2_device_unregister_subdev(&priv->subdev);
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pm_runtime_put(v4l2_get_subdevdata(&priv->subdev));
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break;
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}
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return NOTIFY_OK;
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static int sh_csi2_s_power(struct v4l2_subdev *sd, int on)
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{
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struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev);
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if (on)
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return sh_csi2_client_connect(priv);
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sh_csi2_client_disconnect(priv);
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return 0;
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}
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static struct v4l2_subdev_core_ops sh_csi2_subdev_core_ops = {
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.s_power = sh_csi2_s_power,
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};
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static struct v4l2_subdev_ops sh_csi2_subdev_ops = {
|
||||
.core = &sh_csi2_subdev_core_ops,
|
||||
.video = &sh_csi2_subdev_video_ops,
|
||||
};
|
||||
|
||||
static __devinit int sh_csi2_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
|
|
@ -274,14 +286,6 @@ static __devinit int sh_csi2_probe(struct platform_device *pdev)
|
|||
return -ENOMEM;
|
||||
|
||||
priv->irq = irq;
|
||||
priv->notifier.notifier_call = sh_csi2_notify;
|
||||
|
||||
/* We MUST attach after the MIPI sensor */
|
||||
ret = bus_register_notifier(&soc_camera_bus_type, &priv->notifier);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "CSI2 cannot register notifier\n");
|
||||
goto ernotify;
|
||||
}
|
||||
|
||||
if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
|
||||
dev_err(&pdev->dev, "CSI2 register region already claimed\n");
|
||||
|
|
@ -297,11 +301,17 @@ static __devinit int sh_csi2_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
priv->pdev = pdev;
|
||||
platform_set_drvdata(pdev, priv);
|
||||
|
||||
v4l2_subdev_init(&priv->subdev, &sh_csi2_subdev_ops);
|
||||
v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
|
||||
|
||||
platform_set_drvdata(pdev, priv);
|
||||
snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.mipi-csi",
|
||||
dev_name(pdata->v4l2_dev->dev));
|
||||
ret = v4l2_device_register_subdev(pdata->v4l2_dev, &priv->subdev);
|
||||
dev_dbg(&pdev->dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret);
|
||||
if (ret < 0)
|
||||
goto esdreg;
|
||||
|
||||
pm_runtime_enable(&pdev->dev);
|
||||
|
||||
|
|
@ -309,11 +319,11 @@ static __devinit int sh_csi2_probe(struct platform_device *pdev)
|
|||
|
||||
return 0;
|
||||
|
||||
esdreg:
|
||||
iounmap(priv->base);
|
||||
eremap:
|
||||
release_mem_region(res->start, resource_size(res));
|
||||
ereqreg:
|
||||
bus_unregister_notifier(&soc_camera_bus_type, &priv->notifier);
|
||||
ernotify:
|
||||
kfree(priv);
|
||||
|
||||
return ret;
|
||||
|
|
@ -324,7 +334,7 @@ static __devexit int sh_csi2_remove(struct platform_device *pdev)
|
|||
struct sh_csi2 *priv = platform_get_drvdata(pdev);
|
||||
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
|
||||
bus_unregister_notifier(&soc_camera_bus_type, &priv->notifier);
|
||||
v4l2_device_unregister_subdev(&priv->subdev);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
iounmap(priv->base);
|
||||
release_mem_region(res->start, resource_size(res));
|
||||
|
|
@ -336,6 +346,7 @@ static __devexit int sh_csi2_remove(struct platform_device *pdev)
|
|||
|
||||
static struct platform_driver __refdata sh_csi2_pdrv = {
|
||||
.remove = __devexit_p(sh_csi2_remove),
|
||||
.probe = sh_csi2_probe,
|
||||
.driver = {
|
||||
.name = "sh-mobile-csi2",
|
||||
.owner = THIS_MODULE,
|
||||
|
|
@ -344,7 +355,7 @@ static struct platform_driver __refdata sh_csi2_pdrv = {
|
|||
|
||||
static int __init sh_csi2_init(void)
|
||||
{
|
||||
return platform_driver_probe(&sh_csi2_pdrv, sh_csi2_probe);
|
||||
return platform_driver_register(&sh_csi2_pdrv);
|
||||
}
|
||||
|
||||
static void __exit sh_csi2_exit(void)
|
||||
|
|
|
|||
|
|
@ -7,10 +7,18 @@
|
|||
#define SH_CEU_FLAG_VSYNC_LOW (1 << 3) /* default High if possible */
|
||||
|
||||
struct device;
|
||||
struct resource;
|
||||
|
||||
struct sh_mobile_ceu_companion {
|
||||
u32 num_resources;
|
||||
struct resource *resource;
|
||||
int id;
|
||||
void *platform_data;
|
||||
};
|
||||
|
||||
struct sh_mobile_ceu_info {
|
||||
unsigned long flags;
|
||||
struct device *csi2_dev;
|
||||
struct sh_mobile_ceu_companion *csi2;
|
||||
};
|
||||
|
||||
#endif /* __ASM_SH_MOBILE_CEU_H__ */
|
||||
|
|
|
|||
|
|
@ -11,6 +11,8 @@
|
|||
#ifndef SH_MIPI_CSI
|
||||
#define SH_MIPI_CSI
|
||||
|
||||
#include <linux/list.h>
|
||||
|
||||
enum sh_csi2_phy {
|
||||
SH_CSI2_PHY_MAIN,
|
||||
SH_CSI2_PHY_SUB,
|
||||
|
|
@ -33,14 +35,14 @@ struct sh_csi2_client_config {
|
|||
struct platform_device *pdev; /* client platform device */
|
||||
};
|
||||
|
||||
struct v4l2_device;
|
||||
|
||||
struct sh_csi2_pdata {
|
||||
enum sh_csi2_type type;
|
||||
unsigned int flags;
|
||||
struct sh_csi2_client_config *clients;
|
||||
int num_clients;
|
||||
struct v4l2_device *v4l2_dev;
|
||||
};
|
||||
|
||||
struct device;
|
||||
struct v4l2_device;
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user