drm: sti: add TVOut driver
authorBenjamin Gaignard <benjamin.gaignard@linaro.org>
Wed, 30 Jul 2014 17:26:17 +0000 (19:26 +0200)
committerBenjamin Gaignard <benjamin.gaignard@linaro.org>
Wed, 30 Jul 2014 17:26:17 +0000 (19:26 +0200)
TVout hardware block is responsible to dispatch the data flow coming
from compositor block to any of the output (HDMI or Analog TV).
It control when output are start/stop and configure according the
require flow path.

TVout is the parent of HDMI and HDA drivers and bind them at runtime.

Tvout is mapped on drm_encoder structure.
One encoder is created for each of the sub-devices and link to their
connector/bridge

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
drivers/gpu/drm/sti/Makefile
drivers/gpu/drm/sti/sti_tvout.c [new file with mode: 0644]

index 4cf0c55610373ce7db5da6cc98efc5f5c7046f2d..5f6d96d27f3b240e046c9fbc5169a1b40164aa87 100644 (file)
@@ -6,4 +6,5 @@ obj-$(CONFIG_DRM_STI) = \
        sti_vtg.o \
        sti_vtac.o \
        stihdmi.o \
-       sti_hda.o
\ No newline at end of file
+       sti_hda.o \
+       sti_tvout.o
\ No newline at end of file
diff --git a/drivers/gpu/drm/sti/sti_tvout.c b/drivers/gpu/drm/sti/sti_tvout.c
new file mode 100644 (file)
index 0000000..b69e26f
--- /dev/null
@@ -0,0 +1,648 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ *          Vincent Abriou <vincent.abriou@st.com>
+ *          for STMicroelectronics.
+ * License terms:  GNU General Public License (GPL), version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+
+/* glue registers */
+#define TVO_CSC_MAIN_M0                  0x000
+#define TVO_CSC_MAIN_M1                  0x004
+#define TVO_CSC_MAIN_M2                  0x008
+#define TVO_CSC_MAIN_M3                  0x00c
+#define TVO_CSC_MAIN_M4                  0x010
+#define TVO_CSC_MAIN_M5                  0x014
+#define TVO_CSC_MAIN_M6                  0x018
+#define TVO_CSC_MAIN_M7                  0x01c
+#define TVO_MAIN_IN_VID_FORMAT           0x030
+#define TVO_CSC_AUX_M0                   0x100
+#define TVO_CSC_AUX_M1                   0x104
+#define TVO_CSC_AUX_M2                   0x108
+#define TVO_CSC_AUX_M3                   0x10c
+#define TVO_CSC_AUX_M4                   0x110
+#define TVO_CSC_AUX_M5                   0x114
+#define TVO_CSC_AUX_M6                   0x118
+#define TVO_CSC_AUX_M7                   0x11c
+#define TVO_AUX_IN_VID_FORMAT            0x130
+#define TVO_VIP_HDF                      0x400
+#define TVO_HD_SYNC_SEL                  0x418
+#define TVO_HD_DAC_CFG_OFF               0x420
+#define TVO_VIP_HDMI                     0x500
+#define TVO_HDMI_FORCE_COLOR_0           0x504
+#define TVO_HDMI_FORCE_COLOR_1           0x508
+#define TVO_HDMI_CLIP_VALUE_B_CB         0x50c
+#define TVO_HDMI_CLIP_VALUE_Y_G          0x510
+#define TVO_HDMI_CLIP_VALUE_R_CR         0x514
+#define TVO_HDMI_SYNC_SEL                0x518
+#define TVO_HDMI_DFV_OBS                 0x540
+
+#define TVO_IN_FMT_SIGNED                BIT(0)
+#define TVO_SYNC_EXT                     BIT(4)
+
+#define TVO_VIP_REORDER_R_SHIFT          24
+#define TVO_VIP_REORDER_G_SHIFT          20
+#define TVO_VIP_REORDER_B_SHIFT          16
+#define TVO_VIP_REORDER_MASK             0x3
+#define TVO_VIP_REORDER_Y_G_SEL          0
+#define TVO_VIP_REORDER_CB_B_SEL         1
+#define TVO_VIP_REORDER_CR_R_SEL         2
+
+#define TVO_VIP_CLIP_SHIFT               8
+#define TVO_VIP_CLIP_MASK                0x7
+#define TVO_VIP_CLIP_DISABLED            0
+#define TVO_VIP_CLIP_EAV_SAV             1
+#define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
+#define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
+#define TVO_VIP_CLIP_PROG_RANGE          4
+
+#define TVO_VIP_RND_SHIFT                4
+#define TVO_VIP_RND_MASK                 0x3
+#define TVO_VIP_RND_8BIT_ROUNDED         0
+#define TVO_VIP_RND_10BIT_ROUNDED        1
+#define TVO_VIP_RND_12BIT_ROUNDED        2
+
+#define TVO_VIP_SEL_INPUT_MASK           0xf
+#define TVO_VIP_SEL_INPUT_MAIN           0x0
+#define TVO_VIP_SEL_INPUT_AUX            0x8
+#define TVO_VIP_SEL_INPUT_FORCE_COLOR    0xf
+#define TVO_VIP_SEL_INPUT_BYPASS_MASK    0x1
+#define TVO_VIP_SEL_INPUT_BYPASSED       1
+
+#define TVO_SYNC_MAIN_VTG_SET_REF        0x00
+#define TVO_SYNC_MAIN_VTG_SET_1          0x01
+#define TVO_SYNC_MAIN_VTG_SET_2          0x02
+#define TVO_SYNC_MAIN_VTG_SET_3          0x03
+#define TVO_SYNC_MAIN_VTG_SET_4          0x04
+#define TVO_SYNC_MAIN_VTG_SET_5          0x05
+#define TVO_SYNC_MAIN_VTG_SET_6          0x06
+#define TVO_SYNC_AUX_VTG_SET_REF         0x10
+#define TVO_SYNC_AUX_VTG_SET_1           0x11
+#define TVO_SYNC_AUX_VTG_SET_2           0x12
+#define TVO_SYNC_AUX_VTG_SET_3           0x13
+#define TVO_SYNC_AUX_VTG_SET_4           0x14
+#define TVO_SYNC_AUX_VTG_SET_5           0x15
+#define TVO_SYNC_AUX_VTG_SET_6           0x16
+
+#define TVO_SYNC_HD_DCS_SHIFT            8
+
+#define ENCODER_MAIN_CRTC_MASK           BIT(0)
+
+/* enum listing the supported output data format */
+enum sti_tvout_video_out_type {
+       STI_TVOUT_VIDEO_OUT_RGB,
+       STI_TVOUT_VIDEO_OUT_YUV,
+};
+
+struct sti_tvout {
+       struct device *dev;
+       struct drm_device *drm_dev;
+       void __iomem *regs;
+       struct reset_control *reset;
+       struct drm_encoder *hdmi;
+       struct drm_encoder *hda;
+};
+
+struct sti_tvout_encoder {
+       struct drm_encoder encoder;
+       struct sti_tvout *tvout;
+};
+
+#define to_sti_tvout_encoder(x) \
+       container_of(x, struct sti_tvout_encoder, encoder)
+
+#define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
+
+/* preformatter conversion matrix */
+static const u32 rgb_to_ycbcr_601[8] = {
+       0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
+       0x0000082E, 0x00002000, 0x00002000, 0x00000000
+};
+
+/* 709 RGB to YCbCr */
+static const u32 rgb_to_ycbcr_709[8] = {
+       0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
+       0x0000082F, 0x00002000, 0x00002000, 0x00000000
+};
+
+static u32 tvout_read(struct sti_tvout *tvout, int offset)
+{
+       return readl(tvout->regs + offset);
+}
+
+static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
+{
+       writel(val, tvout->regs + offset);
+}
+
+/**
+ * Set the clipping mode of a VIP
+ *
+ * @tvout: tvout structure
+ * @cr_r:
+ * @y_g:
+ * @cb_b:
+ */
+static void tvout_vip_set_color_order(struct sti_tvout *tvout,
+                                     u32 cr_r, u32 y_g, u32 cb_b)
+{
+       u32 val = tvout_read(tvout, TVO_VIP_HDMI);
+
+       val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
+       val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
+       val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
+       val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
+       val |= y_g << TVO_VIP_REORDER_G_SHIFT;
+       val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
+
+       tvout_write(tvout, val, TVO_VIP_HDMI);
+}
+
+/**
+ * Set the clipping mode of a VIP
+ *
+ * @tvout: tvout structure
+ * @range: clipping range
+ */
+static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, u32 range)
+{
+       u32 val = tvout_read(tvout, TVO_VIP_HDMI);
+
+       val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
+       val |= range << TVO_VIP_CLIP_SHIFT;
+       tvout_write(tvout, val, TVO_VIP_HDMI);
+}
+
+/**
+ * Set the rounded value of a VIP
+ *
+ * @tvout: tvout structure
+ * @rnd: rounded val per component
+ */
+static void tvout_vip_set_rnd(struct sti_tvout *tvout, u32 rnd)
+{
+       u32 val = tvout_read(tvout, TVO_VIP_HDMI);
+
+       val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
+       val |= rnd << TVO_VIP_RND_SHIFT;
+       tvout_write(tvout, val, TVO_VIP_HDMI);
+}
+
+/**
+ * Select the VIP input
+ *
+ * @tvout: tvout structure
+ * @sel_input: selected_input (main/aux + conv)
+ */
+static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
+                                   bool main_path,
+                                   bool sel_input_logic_inverted,
+                                   enum sti_tvout_video_out_type video_out)
+{
+       u32 sel_input;
+       u32 val = tvout_read(tvout, TVO_VIP_HDMI);
+
+       if (main_path)
+               sel_input = TVO_VIP_SEL_INPUT_MAIN;
+       else
+               sel_input = TVO_VIP_SEL_INPUT_AUX;
+
+       switch (video_out) {
+       case STI_TVOUT_VIDEO_OUT_RGB:
+               sel_input |= TVO_VIP_SEL_INPUT_BYPASSED;
+               break;
+       case STI_TVOUT_VIDEO_OUT_YUV:
+               sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED;
+               break;
+       }
+
+       /* on stih407 chip the sel_input bypass mode logic is inverted */
+       if (sel_input_logic_inverted)
+               sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
+
+       val &= ~TVO_VIP_SEL_INPUT_MASK;
+       val |= sel_input;
+       tvout_write(tvout, val, TVO_VIP_HDMI);
+}
+
+/**
+ * Select the input video signed or unsigned
+ *
+ * @tvout: tvout structure
+ * @in_vid_signed: used video input format
+ */
+static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout, u32 in_vid_fmt)
+{
+       u32 val = tvout_read(tvout, TVO_VIP_HDMI);
+
+       val &= ~TVO_IN_FMT_SIGNED;
+       val |= in_vid_fmt;
+       tvout_write(tvout, val, TVO_MAIN_IN_VID_FORMAT);
+}
+
+/**
+ * Start VIP block for HDMI output
+ *
+ * @tvout: pointer on tvout structure
+ * @main_path: true if main path has to be used in the vip configuration
+ *       else aux path is used.
+ */
+static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
+{
+       struct device_node *node = tvout->dev->of_node;
+       bool sel_input_logic_inverted = false;
+
+       dev_dbg(tvout->dev, "%s\n", __func__);
+
+       if (main_path) {
+               DRM_DEBUG_DRIVER("main vip for hdmi\n");
+               /* select the input sync for hdmi = VTG set 1 */
+               tvout_write(tvout, TVO_SYNC_MAIN_VTG_SET_1, TVO_HDMI_SYNC_SEL);
+       } else {
+               DRM_DEBUG_DRIVER("aux vip for hdmi\n");
+               /* select the input sync for hdmi = VTG set 1 */
+               tvout_write(tvout, TVO_SYNC_AUX_VTG_SET_1, TVO_HDMI_SYNC_SEL);
+       }
+
+       /* set color channel order */
+       tvout_vip_set_color_order(tvout,
+                                 TVO_VIP_REORDER_CR_R_SEL,
+                                 TVO_VIP_REORDER_Y_G_SEL,
+                                 TVO_VIP_REORDER_CB_B_SEL);
+
+       /* set clipping mode (Limited range RGB/Y) */
+       tvout_vip_set_clip_mode(tvout, TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y);
+
+       /* set round mode (rounded to 8-bit per component) */
+       tvout_vip_set_rnd(tvout, TVO_VIP_RND_8BIT_ROUNDED);
+
+       if (of_device_is_compatible(node, "st,stih407-tvout")) {
+               /* set input video format */
+               tvout_vip_set_in_vid_fmt(tvout->regs + TVO_MAIN_IN_VID_FORMAT,
+                                        TVO_IN_FMT_SIGNED);
+               sel_input_logic_inverted = true;
+       }
+
+       /* input selection */
+       tvout_vip_set_sel_input(tvout, main_path,
+                       sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB);
+}
+
+/**
+ * Start HDF VIP and HD DAC
+ *
+ * @tvout: pointer on tvout structure
+ * @main_path: true if main path has to be used in the vip configuration
+ *       else aux path is used.
+ */
+static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
+{
+       struct device_node *node = tvout->dev->of_node;
+       bool sel_input_logic_inverted = false;
+
+       dev_dbg(tvout->dev, "%s\n", __func__);
+
+       if (!main_path) {
+               DRM_ERROR("HD Analog on aux not implemented\n");
+               return;
+       }
+
+       DRM_DEBUG_DRIVER("main vip for HDF\n");
+
+       /* set color channel order */
+       tvout_vip_set_color_order(tvout->regs + TVO_VIP_HDF,
+                                 TVO_VIP_REORDER_CR_R_SEL,
+                                 TVO_VIP_REORDER_Y_G_SEL,
+                                 TVO_VIP_REORDER_CB_B_SEL);
+
+       /* set clipping mode (Limited range RGB/Y) */
+       tvout_vip_set_clip_mode(tvout->regs + TVO_VIP_HDF,
+                               TVO_VIP_CLIP_LIMITED_RANGE_CB_CR);
+
+       /* set round mode (rounded to 10-bit per component) */
+       tvout_vip_set_rnd(tvout->regs + TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
+
+       if (of_device_is_compatible(node, "st,stih407-tvout")) {
+               /* set input video format */
+               tvout_vip_set_in_vid_fmt(tvout, TVO_IN_FMT_SIGNED);
+               sel_input_logic_inverted = true;
+       }
+
+       /* Input selection */
+       tvout_vip_set_sel_input(tvout->regs + TVO_VIP_HDF,
+                               main_path,
+                               sel_input_logic_inverted,
+                               STI_TVOUT_VIDEO_OUT_YUV);
+
+       /* select the input sync for HD analog = VTG set 3
+        * and HD DCS = VTG set 2 */
+       tvout_write(tvout,
+               (TVO_SYNC_MAIN_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT)
+               | TVO_SYNC_MAIN_VTG_SET_3,
+               TVO_HD_SYNC_SEL);
+
+       /* power up HD DAC */
+       tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
+}
+
+static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+}
+
+static bool sti_tvout_encoder_mode_fixup(struct drm_encoder *encoder,
+                                      const struct drm_display_mode *mode,
+                                      struct drm_display_mode *adjusted_mode)
+{
+       return true;
+}
+
+static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
+                                      struct drm_display_mode *mode,
+                                      struct drm_display_mode *adjusted_mode)
+{
+}
+
+static void sti_tvout_encoder_prepare(struct drm_encoder *encoder)
+{
+}
+
+static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
+{
+       struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
+
+       drm_encoder_cleanup(encoder);
+       kfree(sti_encoder);
+}
+
+static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
+       .destroy = sti_tvout_encoder_destroy,
+};
+
+static void sti_hda_encoder_commit(struct drm_encoder *encoder)
+{
+       struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+       tvout_hda_start(tvout, true);
+}
+
+static void sti_hda_encoder_disable(struct drm_encoder *encoder)
+{
+       struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+       /* reset VIP register */
+       tvout_write(tvout, 0x0, TVO_VIP_HDF);
+
+       /* power down HD DAC */
+       tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
+}
+
+static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
+       .dpms = sti_tvout_encoder_dpms,
+       .mode_fixup = sti_tvout_encoder_mode_fixup,
+       .mode_set = sti_tvout_encoder_mode_set,
+       .prepare = sti_tvout_encoder_prepare,
+       .commit = sti_hda_encoder_commit,
+       .disable = sti_hda_encoder_disable,
+};
+
+static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
+               struct sti_tvout *tvout)
+{
+       struct sti_tvout_encoder *encoder;
+       struct drm_encoder *drm_encoder;
+
+       encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
+       if (!encoder)
+               return NULL;
+
+       encoder->tvout = tvout;
+
+       drm_encoder = (struct drm_encoder *) encoder;
+
+       drm_encoder->possible_crtcs = ENCODER_MAIN_CRTC_MASK;
+       drm_encoder->possible_clones = 1 << 0;
+
+       drm_encoder_init(dev, drm_encoder,
+                       &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC);
+
+       drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
+
+       return drm_encoder;
+}
+
+static void sti_hdmi_encoder_commit(struct drm_encoder *encoder)
+{
+       struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+       tvout_hdmi_start(tvout, true);
+}
+
+static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
+{
+       struct sti_tvout *tvout = to_sti_tvout(encoder);
+
+       /* reset VIP register */
+       tvout_write(tvout, 0x0, TVO_VIP_HDMI);
+}
+
+static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
+       .dpms = sti_tvout_encoder_dpms,
+       .mode_fixup = sti_tvout_encoder_mode_fixup,
+       .mode_set = sti_tvout_encoder_mode_set,
+       .prepare = sti_tvout_encoder_prepare,
+       .commit = sti_hdmi_encoder_commit,
+       .disable = sti_hdmi_encoder_disable,
+};
+
+static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
+               struct sti_tvout *tvout)
+{
+       struct sti_tvout_encoder *encoder;
+       struct drm_encoder *drm_encoder;
+
+       encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
+       if (!encoder)
+               return NULL;
+
+       encoder->tvout = tvout;
+
+       drm_encoder = (struct drm_encoder *) encoder;
+
+       drm_encoder->possible_crtcs = ENCODER_MAIN_CRTC_MASK;
+       drm_encoder->possible_clones = 1 << 1;
+
+       drm_encoder_init(dev, drm_encoder,
+                       &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS);
+
+       drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
+
+       return drm_encoder;
+}
+
+static void sti_tvout_create_encoders(struct drm_device *dev,
+               struct sti_tvout *tvout)
+{
+       tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
+       tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
+}
+
+static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
+{
+       if (tvout->hdmi)
+               drm_encoder_cleanup(tvout->hdmi);
+       tvout->hdmi = NULL;
+
+       if (tvout->hda)
+               drm_encoder_cleanup(tvout->hda);
+       tvout->hda = NULL;
+}
+
+static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
+{
+       struct sti_tvout *tvout = dev_get_drvdata(dev);
+       struct drm_device *drm_dev = data;
+       unsigned int i;
+       int ret;
+
+       tvout->drm_dev = drm_dev;
+
+       /* set preformatter matrix */
+       for (i = 0; i < 8; i++) {
+               tvout_write(tvout, rgb_to_ycbcr_601[i],
+                       TVO_CSC_MAIN_M0 + (i * 4));
+               tvout_write(tvout, rgb_to_ycbcr_601[i],
+                       TVO_CSC_AUX_M0 + (i * 4));
+       }
+
+       sti_tvout_create_encoders(drm_dev, tvout);
+
+       ret = component_bind_all(dev, drm_dev);
+       if (ret)
+               sti_tvout_destroy_encoders(tvout);
+
+       return ret;
+}
+
+static void sti_tvout_unbind(struct device *dev, struct device *master,
+       void *data)
+{
+       /* do nothing */
+}
+
+static const struct component_ops sti_tvout_ops = {
+       .bind   = sti_tvout_bind,
+       .unbind = sti_tvout_unbind,
+};
+
+static int compare_of(struct device *dev, void *data)
+{
+       return dev->of_node == data;
+}
+
+static int sti_tvout_master_bind(struct device *dev)
+{
+       return 0;
+}
+
+static void sti_tvout_master_unbind(struct device *dev)
+{
+       /* do nothing */
+}
+
+static const struct component_master_ops sti_tvout_master_ops = {
+       .bind = sti_tvout_master_bind,
+       .unbind = sti_tvout_master_unbind,
+};
+
+static int sti_tvout_probe(struct platform_device *pdev)
+{
+       struct device *dev = &pdev->dev;
+       struct device_node *node = dev->of_node;
+       struct sti_tvout *tvout;
+       struct resource *res;
+       struct device_node *child_np;
+       struct component_match *match = NULL;
+
+       DRM_INFO("%s\n", __func__);
+
+       if (!node)
+               return -ENODEV;
+
+       tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
+       if (!tvout)
+               return -ENOMEM;
+
+       tvout->dev = dev;
+
+       /* get Memory ressources */
+       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
+       if (!res) {
+               DRM_ERROR("Invalid glue resource\n");
+               return -ENOMEM;
+       }
+       tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
+       if (IS_ERR(tvout->regs))
+               return PTR_ERR(tvout->regs);
+
+       /* get reset resources */
+       tvout->reset = devm_reset_control_get(dev, "tvout");
+       /* take tvout out of reset */
+       if (!IS_ERR(tvout->reset))
+               reset_control_deassert(tvout->reset);
+
+       platform_set_drvdata(pdev, tvout);
+
+       of_platform_populate(node, NULL, NULL, dev);
+
+       child_np = of_get_next_available_child(node, NULL);
+
+       while (child_np) {
+               component_match_add(dev, &match, compare_of, child_np);
+               of_node_put(child_np);
+               child_np = of_get_next_available_child(node, child_np);
+       }
+
+       component_master_add_with_match(dev, &sti_tvout_master_ops, match);
+
+       return component_add(dev, &sti_tvout_ops);
+}
+
+static int sti_tvout_remove(struct platform_device *pdev)
+{
+       component_master_del(&pdev->dev, &sti_tvout_master_ops);
+       component_del(&pdev->dev, &sti_tvout_ops);
+       return 0;
+}
+
+static struct of_device_id tvout_of_match[] = {
+       { .compatible = "st,stih416-tvout", },
+       { .compatible = "st,stih407-tvout", },
+       { /* end node */ }
+};
+MODULE_DEVICE_TABLE(of, tvout_of_match);
+
+struct platform_driver sti_tvout_driver = {
+       .driver = {
+               .name = "sti-tvout",
+               .owner = THIS_MODULE,
+               .of_match_table = tvout_of_match,
+       },
+       .probe = sti_tvout_probe,
+       .remove = sti_tvout_remove,
+};
+
+module_platform_driver(sti_tvout_driver);
+
+MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
+MODULE_LICENSE("GPL");