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linux/drivers/gpu/drm/sti/sti_tvout.c

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/*
* 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>
#include "sti_crtc.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_VIP_DVO 0x600
#define TVO_DVO_SYNC_SEL 0x618
#define TVO_DVO_CONFIG 0x620
#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 TVO_SYNC_DVO_PAD_HSYNC_SHIFT 8
#define TVO_SYNC_DVO_PAD_VSYNC_SHIFT 16
#define ENCODER_CRTC_MASK (BIT(0) | BIT(1))
/* 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 drm_encoder *dvo;
};
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
* @reg: register to set
* @cr_r:
* @y_g:
* @cb_b:
*/
static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
u32 cr_r, u32 y_g, u32 cb_b)
{
u32 val = tvout_read(tvout, reg);
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, reg);
}
/**
* Set the clipping mode of a VIP
*
* @tvout: tvout structure
* @reg: register to set
* @range: clipping range
*/
static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
{
u32 val = tvout_read(tvout, reg);
val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
val |= range << TVO_VIP_CLIP_SHIFT;
tvout_write(tvout, val, reg);
}
/**
* Set the rounded value of a VIP
*
* @tvout: tvout structure
* @reg: register to set
* @rnd: rounded val per component
*/
static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
{
u32 val = tvout_read(tvout, reg);
val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
val |= rnd << TVO_VIP_RND_SHIFT;
tvout_write(tvout, val, reg);
}
/**
* Select the VIP input
*
* @tvout: tvout structure
* @reg: register to set
* @main_path: main or auxiliary path
* @sel_input_logic_inverted: need to invert the logic
* @sel_input: selected_input (main/aux + conv)
*/
static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
int reg,
bool main_path,
bool sel_input_logic_inverted,
enum sti_tvout_video_out_type video_out)
{
u32 sel_input;
u32 val = tvout_read(tvout, reg);
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, reg);
}
/**
* Select the input video signed or unsigned
*
* @tvout: tvout structure
* @reg: register to set
* @in_vid_signed: used video input format
*/
static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
int reg, u32 in_vid_fmt)
{
u32 val = tvout_read(tvout, reg);
val &= ~TVO_IN_FMT_SIGNED;
val |= in_vid_fmt;
tvout_write(tvout, val, reg);
}
/**
* Start VIP block for DVO 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_dvo_start(struct sti_tvout *tvout, bool main_path)
{
struct device_node *node = tvout->dev->of_node;
bool sel_input_logic_inverted = false;
u32 tvo_in_vid_format;
int val;
dev_dbg(tvout->dev, "%s\n", __func__);
if (main_path) {
DRM_DEBUG_DRIVER("main vip for DVO\n");
/* Select the input sync for dvo = VTG set 4 */
val = TVO_SYNC_MAIN_VTG_SET_4 << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
val |= TVO_SYNC_MAIN_VTG_SET_4 << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
val |= TVO_SYNC_MAIN_VTG_SET_4;
tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
} else {
DRM_DEBUG_DRIVER("aux vip for DVO\n");
/* Select the input sync for dvo = VTG set 4 */
val = TVO_SYNC_AUX_VTG_SET_4 << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
val |= TVO_SYNC_AUX_VTG_SET_4 << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
val |= TVO_SYNC_AUX_VTG_SET_4;
tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
}
/* Set color channel order */
tvout_vip_set_color_order(tvout, TVO_VIP_DVO,
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_DVO,
TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y);
/* Set round mode (rounded to 8-bit per component) */
tvout_vip_set_rnd(tvout, TVO_VIP_DVO, 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, tvo_in_vid_format,
TVO_IN_FMT_SIGNED);
sel_input_logic_inverted = true;
}
/* Input selection */
tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path,
sel_input_logic_inverted,
STI_TVOUT_VIDEO_OUT_RGB);
}
/**
* 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;
u32 tvo_in_vid_format;
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);
tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
} 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);
tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
}
/* set color channel order */
tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
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_HDMI,
TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y);
/* set round mode (rounded to 8-bit per component) */
tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, 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, tvo_in_vid_format,
TVO_IN_FMT_SIGNED);
sel_input_logic_inverted = true;
}
/* input selection */
tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, 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;
u32 tvo_in_vid_format;
int val;
dev_dbg(tvout->dev, "%s\n", __func__);
if (main_path) {
val = TVO_SYNC_MAIN_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT;
val |= TVO_SYNC_MAIN_VTG_SET_3;
tvout_write(tvout, val, TVO_HD_SYNC_SEL);
tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
} else {
val = TVO_SYNC_AUX_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT;
val |= TVO_SYNC_AUX_VTG_SET_3;
tvout_write(tvout, val, TVO_HD_SYNC_SEL);
tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
}
/* set color channel order */
tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
TVO_VIP_REORDER_CR_R_SEL,
TVO_VIP_REORDER_Y_G_SEL,
TVO_VIP_REORDER_CB_B_SEL);
/* set clipping mode (EAV/SAV clipping) */
tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_EAV_SAV);
/* set round mode (rounded to 10-bit per component) */
tvout_vip_set_rnd(tvout, 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_vid_format, TVO_IN_FMT_SIGNED);
sel_input_logic_inverted = true;
}
/* Input selection */
tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
sel_input_logic_inverted,
STI_TVOUT_VIDEO_OUT_YUV);
/* 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_dvo_encoder_commit(struct drm_encoder *encoder)
{
struct sti_tvout *tvout = to_sti_tvout(encoder);
tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc));
}
static void sti_dvo_encoder_disable(struct drm_encoder *encoder)
{
struct sti_tvout *tvout = to_sti_tvout(encoder);
/* Reset VIP register */
tvout_write(tvout, 0x0, TVO_VIP_DVO);
}
static const struct drm_encoder_helper_funcs sti_dvo_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_dvo_encoder_commit,
.disable = sti_dvo_encoder_disable,
};
static struct drm_encoder *
sti_tvout_create_dvo_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_CRTC_MASK;
drm_encoder->possible_clones = 1 << 0;
drm_encoder_init(dev, drm_encoder,
&sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS);
drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs);
return drm_encoder;
}
static void sti_hda_encoder_commit(struct drm_encoder *encoder)
{
struct sti_tvout *tvout = to_sti_tvout(encoder);
tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc));
}
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_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, sti_crtc_is_main(encoder->crtc));
}
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_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);
tvout->dvo = sti_tvout_create_dvo_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;
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);
return 0;
}
static void sti_tvout_unbind(struct device *dev, struct device *master,
void *data)
{
struct sti_tvout *tvout = dev_get_drvdata(dev);
sti_tvout_destroy_encoders(tvout);
}
static const struct component_ops sti_tvout_ops = {
.bind = sti_tvout_bind,
.unbind = sti_tvout_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;
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 (!tvout->regs)
return -ENOMEM;
/* 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);
return component_add(dev, &sti_tvout_ops);
}
static int sti_tvout_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &sti_tvout_ops);
return 0;
}
static const 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");
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