[PATCH 09/14] drm: exynos: hdmi: add support for platform variants for mixer

[Rahul Sharma]

This patch adds the support for multiple mixer versions avaialble in
various platform variants. Version is passed as a driver data field
instead of paltform data.

Signed-off-by: Rahul Sharma <rahul.sharma at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c 
b/drivers/gpu/drm/exynos/exynos_mixer.c
index 8a43ee1..30233a3 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -73,6 +73,12 @@ struct mixer_resources {
        struct clk              *sclk_dac;
 };

+enum mixer_version_id {
+       MXR_VER_INVALID = -1,
+       MXR_VER_0_0_0_16,
+       MXR_VER_16_0_33_0,
+};
+
 struct mixer_context {
        struct device           *dev;
        int                     pipe;
@@ -83,6 +89,11 @@ struct mixer_context {
        struct mutex            mixer_mutex;
        struct mixer_resources  mixer_res;
        struct hdmi_win_data    win_data[MIXER_WIN_NR];
+       enum mixer_version_id   mxr_ver;
+};
+
+struct mixer_drv_data {
+       enum mixer_version_id   version;
 };

 static const u8 filter_y_horiz_tap8[] = {
@@ -1023,11 +1034,24 @@ fail:
        return ret;
 }

+static struct mixer_drv_data exynos4_mxr_drv_data = {
+       .version = MXR_VER_0_0_0_16,
+};
+static struct platform_device_id mixer_driver_types[] = {
+       {
+               .name           = "s5p-mixer",
+               .driver_data    = (unsigned long)&exynos4_mxr_drv_data,
+       }, {
+               /* end node */
+       }
+};
+
 static int __devinit mixer_probe(struct platform_device *pdev)
 {
        struct device *dev = &pdev->dev;
        struct exynos_drm_hdmi_context *drm_hdmi_ctx;
        struct mixer_context *ctx;
+       struct mixer_drv_data *drv;
        int ret;

        dev_info(dev, "probe start\n");
@@ -1047,8 +1071,11 @@ static int __devinit mixer_probe(struct platform_device 
*pdev)

        mutex_init(&ctx->mixer_mutex);

+       drv = (struct mixer_drv_data *)platform_get_device_id(
+                       pdev)->driver_data;
        ctx->dev = &pdev->dev;
        drm_hdmi_ctx->ctx = (void *)ctx;
+       ctx->mxr_ver = drv->version;

        platform_set_drvdata(pdev, drm_hdmi_ctx);

@@ -1101,4 +1128,5 @@ struct platform_driver mixer_driver = {
        },
        .probe = mixer_probe,
        .remove = __devexit_p(mixer_remove),
+       .id_table       = mixer_driver_types,
 };
-- 
1.7.0.4