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linux-stable/drivers/media/video/s5p-tv/hdmi_drv.c
Tomasz Stanislawski 2fd07a4a9e [media] v4l: s5p-tv: hdmi: fix mode synchronization 
The mode setup was applied on HDMI hardware only on resume event.  This caused
problem if HDMI was not suspended between mode switches.  This patch fixes this
problem by setting a dirty flag on a mode change event.  If flag is set, then
new mode is applied on the next stream-on event.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-20 09:02:15 -03:00

1007 lines
26 KiB
C
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/*
* Samsung HDMI interface driver
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
*
* Tomasz Stanislawski, <t.stanislaws@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundiation. either version 2 of the License,
* or (at your option) any later version
*/
#ifdef CONFIG_VIDEO_SAMSUNG_S5P_HDMI_DEBUG
#define DEBUG
#endif
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <media/v4l2-subdev.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/bug.h>
#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
#include <media/s5p_hdmi.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
#include "regs-hdmi.h"
MODULE_AUTHOR("Tomasz Stanislawski, <t.stanislaws@samsung.com>");
MODULE_DESCRIPTION("Samsung HDMI");
MODULE_LICENSE("GPL");
/* default preset configured on probe */
#define HDMI_DEFAULT_PRESET V4L2_DV_480P59_94
struct hdmi_pulse {
u32 beg;
u32 end;
};
struct hdmi_timings {
struct hdmi_pulse hact;
u32 hsyn_pol; /* 0 - high, 1 - low */
struct hdmi_pulse hsyn;
u32 interlaced;
struct hdmi_pulse vact[2];
u32 vsyn_pol; /* 0 - high, 1 - low */
u32 vsyn_off;
struct hdmi_pulse vsyn[2];
};
struct hdmi_resources {
struct clk *hdmi;
struct clk *sclk_hdmi;
struct clk *sclk_pixel;
struct clk *sclk_hdmiphy;
struct clk *hdmiphy;
struct regulator_bulk_data *regul_bulk;
int regul_count;
};
struct hdmi_device {
/** base address of HDMI registers */
void __iomem *regs;
/** HDMI interrupt */
unsigned int irq;
/** pointer to device parent */
struct device *dev;
/** subdev generated by HDMI device */
struct v4l2_subdev sd;
/** V4L2 device structure */
struct v4l2_device v4l2_dev;
/** subdev of HDMIPHY interface */
struct v4l2_subdev *phy_sd;
/** subdev of MHL interface */
struct v4l2_subdev *mhl_sd;
/** configuration of current graphic mode */
const struct hdmi_timings *cur_conf;
/** flag indicating that timings are dirty */
int cur_conf_dirty;
/** current preset */
u32 cur_preset;
/** other resources */
struct hdmi_resources res;
};
static struct platform_device_id hdmi_driver_types[] = {
{
.name = "s5pv210-hdmi",
}, {
.name = "exynos4-hdmi",
}, {
/* end node */
}
};
static const struct v4l2_subdev_ops hdmi_sd_ops;
static struct hdmi_device *sd_to_hdmi_dev(struct v4l2_subdev *sd)
{
return container_of(sd, struct hdmi_device, sd);
}
static inline
void hdmi_write(struct hdmi_device *hdev, u32 reg_id, u32 value)
{
writel(value, hdev->regs + reg_id);
}
static inline
void hdmi_write_mask(struct hdmi_device *hdev, u32 reg_id, u32 value, u32 mask)
{
u32 old = readl(hdev->regs + reg_id);
value = (value & mask) | (old & ~mask);
writel(value, hdev->regs + reg_id);
}
static inline
void hdmi_writeb(struct hdmi_device *hdev, u32 reg_id, u8 value)
{
writeb(value, hdev->regs + reg_id);
}
static inline
void hdmi_writebn(struct hdmi_device *hdev, u32 reg_id, int n, u32 value)
{
switch (n) {
default:
writeb(value >> 24, hdev->regs + reg_id + 12);
case 3:
writeb(value >> 16, hdev->regs + reg_id + 8);
case 2:
writeb(value >> 8, hdev->regs + reg_id + 4);
case 1:
writeb(value >> 0, hdev->regs + reg_id + 0);
}
}
static inline u32 hdmi_read(struct hdmi_device *hdev, u32 reg_id)
{
return readl(hdev->regs + reg_id);
}
static irqreturn_t hdmi_irq_handler(int irq, void *dev_data)
{
struct hdmi_device *hdev = dev_data;
u32 intc_flag;
(void)irq;
intc_flag = hdmi_read(hdev, HDMI_INTC_FLAG);
/* clearing flags for HPD plug/unplug */
if (intc_flag & HDMI_INTC_FLAG_HPD_UNPLUG) {
printk(KERN_INFO "unplugged\n");
hdmi_write_mask(hdev, HDMI_INTC_FLAG, ~0,
HDMI_INTC_FLAG_HPD_UNPLUG);
}
if (intc_flag & HDMI_INTC_FLAG_HPD_PLUG) {
printk(KERN_INFO "plugged\n");
hdmi_write_mask(hdev, HDMI_INTC_FLAG, ~0,
HDMI_INTC_FLAG_HPD_PLUG);
}
return IRQ_HANDLED;
}
static void hdmi_reg_init(struct hdmi_device *hdev)
{
/* enable HPD interrupts */
hdmi_write_mask(hdev, HDMI_INTC_CON, ~0, HDMI_INTC_EN_GLOBAL |
HDMI_INTC_EN_HPD_PLUG | HDMI_INTC_EN_HPD_UNPLUG);
/* choose DVI mode */
hdmi_write_mask(hdev, HDMI_MODE_SEL,
HDMI_MODE_DVI_EN, HDMI_MODE_MASK);
hdmi_write_mask(hdev, HDMI_CON_2, ~0,
HDMI_DVI_PERAMBLE_EN | HDMI_DVI_BAND_EN);
/* disable bluescreen */
hdmi_write_mask(hdev, HDMI_CON_0, 0, HDMI_BLUE_SCR_EN);
/* choose bluescreen (fecal) color */
hdmi_writeb(hdev, HDMI_BLUE_SCREEN_0, 0x12);
hdmi_writeb(hdev, HDMI_BLUE_SCREEN_1, 0x34);
hdmi_writeb(hdev, HDMI_BLUE_SCREEN_2, 0x56);
}
static void hdmi_timing_apply(struct hdmi_device *hdev,
const struct hdmi_timings *t)
{
/* setting core registers */
hdmi_writebn(hdev, HDMI_H_BLANK_0, 2, t->hact.beg);
hdmi_writebn(hdev, HDMI_H_SYNC_GEN_0, 3,
(t->hsyn_pol << 20) | (t->hsyn.end << 10) | t->hsyn.beg);
hdmi_writeb(hdev, HDMI_VSYNC_POL, t->vsyn_pol);
hdmi_writebn(hdev, HDMI_V_BLANK_0, 3,
(t->vact[0].beg << 11) | t->vact[0].end);
hdmi_writebn(hdev, HDMI_V_SYNC_GEN_1_0, 3,
(t->vsyn[0].beg << 12) | t->vsyn[0].end);
if (t->interlaced) {
u32 vsyn_trans = t->hsyn.beg + t->vsyn_off;
hdmi_writeb(hdev, HDMI_INT_PRO_MODE, 1);
hdmi_writebn(hdev, HDMI_H_V_LINE_0, 3,
(t->hact.end << 12) | t->vact[1].end);
hdmi_writebn(hdev, HDMI_V_BLANK_F_0, 3,
(t->vact[1].end << 11) | t->vact[1].beg);
hdmi_writebn(hdev, HDMI_V_SYNC_GEN_2_0, 3,
(t->vsyn[1].beg << 12) | t->vsyn[1].end);
hdmi_writebn(hdev, HDMI_V_SYNC_GEN_3_0, 3,
(vsyn_trans << 12) | vsyn_trans);
} else {
hdmi_writeb(hdev, HDMI_INT_PRO_MODE, 0);
hdmi_writebn(hdev, HDMI_H_V_LINE_0, 3,
(t->hact.end << 12) | t->vact[0].end);
}
/* Timing generator registers */
hdmi_writebn(hdev, HDMI_TG_H_FSZ_L, 2, t->hact.end);
hdmi_writebn(hdev, HDMI_TG_HACT_ST_L, 2, t->hact.beg);
hdmi_writebn(hdev, HDMI_TG_HACT_SZ_L, 2, t->hact.end - t->hact.beg);
hdmi_writebn(hdev, HDMI_TG_VSYNC_L, 2, t->vsyn[0].beg);
hdmi_writebn(hdev, HDMI_TG_VACT_ST_L, 2, t->vact[0].beg);
hdmi_writebn(hdev, HDMI_TG_VACT_SZ_L, 2,
t->vact[0].end - t->vact[0].beg);
hdmi_writebn(hdev, HDMI_TG_VSYNC_TOP_HDMI_L, 2, t->vsyn[0].beg);
hdmi_writebn(hdev, HDMI_TG_FIELD_TOP_HDMI_L, 2, t->vsyn[0].beg);
if (t->interlaced) {
hdmi_write_mask(hdev, HDMI_TG_CMD, ~0, HDMI_TG_FIELD_EN);
hdmi_writebn(hdev, HDMI_TG_V_FSZ_L, 2, t->vact[1].end);
hdmi_writebn(hdev, HDMI_TG_VSYNC2_L, 2, t->vsyn[1].beg);
hdmi_writebn(hdev, HDMI_TG_FIELD_CHG_L, 2, t->vact[0].end);
hdmi_writebn(hdev, HDMI_TG_VACT_ST2_L, 2, t->vact[1].beg);
hdmi_writebn(hdev, HDMI_TG_VSYNC_BOT_HDMI_L, 2, t->vsyn[1].beg);
hdmi_writebn(hdev, HDMI_TG_FIELD_BOT_HDMI_L, 2, t->vsyn[1].beg);
} else {
hdmi_write_mask(hdev, HDMI_TG_CMD, 0, HDMI_TG_FIELD_EN);
hdmi_writebn(hdev, HDMI_TG_V_FSZ_L, 2, t->vact[0].end);
}
}
static int hdmi_conf_apply(struct hdmi_device *hdmi_dev)
{
struct device *dev = hdmi_dev->dev;
const struct hdmi_timings *conf = hdmi_dev->cur_conf;
struct v4l2_dv_preset preset;
int ret;
dev_dbg(dev, "%s\n", __func__);
/* skip if conf is already synchronized with HW */
if (!hdmi_dev->cur_conf_dirty)
return 0;
/* reset hdmiphy */
hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);
mdelay(10);
hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, 0, HDMI_PHY_SW_RSTOUT);
mdelay(10);
/* configure presets */
preset.preset = hdmi_dev->cur_preset;
ret = v4l2_subdev_call(hdmi_dev->phy_sd, video, s_dv_preset, &preset);
if (ret) {
dev_err(dev, "failed to set preset (%u)\n", preset.preset);
return ret;
}
/* resetting HDMI core */
hdmi_write_mask(hdmi_dev, HDMI_CORE_RSTOUT, 0, HDMI_CORE_SW_RSTOUT);
mdelay(10);
hdmi_write_mask(hdmi_dev, HDMI_CORE_RSTOUT, ~0, HDMI_CORE_SW_RSTOUT);
mdelay(10);
hdmi_reg_init(hdmi_dev);
/* setting core registers */
hdmi_timing_apply(hdmi_dev, conf);
hdmi_dev->cur_conf_dirty = 0;
return 0;
}
static void hdmi_dumpregs(struct hdmi_device *hdev, char *prefix)
{
#define DUMPREG(reg_id) \
dev_dbg(hdev->dev, "%s:" #reg_id " = %08x\n", prefix, \
readl(hdev->regs + reg_id))
dev_dbg(hdev->dev, "%s: ---- CONTROL REGISTERS ----\n", prefix);
DUMPREG(HDMI_INTC_FLAG);
DUMPREG(HDMI_INTC_CON);
DUMPREG(HDMI_HPD_STATUS);
DUMPREG(HDMI_PHY_RSTOUT);
DUMPREG(HDMI_PHY_VPLL);
DUMPREG(HDMI_PHY_CMU);
DUMPREG(HDMI_CORE_RSTOUT);
dev_dbg(hdev->dev, "%s: ---- CORE REGISTERS ----\n", prefix);
DUMPREG(HDMI_CON_0);
DUMPREG(HDMI_CON_1);
DUMPREG(HDMI_CON_2);
DUMPREG(HDMI_SYS_STATUS);
DUMPREG(HDMI_PHY_STATUS);
DUMPREG(HDMI_STATUS_EN);
DUMPREG(HDMI_HPD);
DUMPREG(HDMI_MODE_SEL);
DUMPREG(HDMI_HPD_GEN);
DUMPREG(HDMI_DC_CONTROL);
DUMPREG(HDMI_VIDEO_PATTERN_GEN);
dev_dbg(hdev->dev, "%s: ---- CORE SYNC REGISTERS ----\n", prefix);
DUMPREG(HDMI_H_BLANK_0);
DUMPREG(HDMI_H_BLANK_1);
DUMPREG(HDMI_V_BLANK_0);
DUMPREG(HDMI_V_BLANK_1);
DUMPREG(HDMI_V_BLANK_2);
DUMPREG(HDMI_H_V_LINE_0);
DUMPREG(HDMI_H_V_LINE_1);
DUMPREG(HDMI_H_V_LINE_2);
DUMPREG(HDMI_VSYNC_POL);
DUMPREG(HDMI_INT_PRO_MODE);
DUMPREG(HDMI_V_BLANK_F_0);
DUMPREG(HDMI_V_BLANK_F_1);
DUMPREG(HDMI_V_BLANK_F_2);
DUMPREG(HDMI_H_SYNC_GEN_0);
DUMPREG(HDMI_H_SYNC_GEN_1);
DUMPREG(HDMI_H_SYNC_GEN_2);
DUMPREG(HDMI_V_SYNC_GEN_1_0);
DUMPREG(HDMI_V_SYNC_GEN_1_1);
DUMPREG(HDMI_V_SYNC_GEN_1_2);
DUMPREG(HDMI_V_SYNC_GEN_2_0);
DUMPREG(HDMI_V_SYNC_GEN_2_1);
DUMPREG(HDMI_V_SYNC_GEN_2_2);
DUMPREG(HDMI_V_SYNC_GEN_3_0);
DUMPREG(HDMI_V_SYNC_GEN_3_1);
DUMPREG(HDMI_V_SYNC_GEN_3_2);
dev_dbg(hdev->dev, "%s: ---- TG REGISTERS ----\n", prefix);
DUMPREG(HDMI_TG_CMD);
DUMPREG(HDMI_TG_H_FSZ_L);
DUMPREG(HDMI_TG_H_FSZ_H);
DUMPREG(HDMI_TG_HACT_ST_L);
DUMPREG(HDMI_TG_HACT_ST_H);
DUMPREG(HDMI_TG_HACT_SZ_L);
DUMPREG(HDMI_TG_HACT_SZ_H);
DUMPREG(HDMI_TG_V_FSZ_L);
DUMPREG(HDMI_TG_V_FSZ_H);
DUMPREG(HDMI_TG_VSYNC_L);
DUMPREG(HDMI_TG_VSYNC_H);
DUMPREG(HDMI_TG_VSYNC2_L);
DUMPREG(HDMI_TG_VSYNC2_H);
DUMPREG(HDMI_TG_VACT_ST_L);
DUMPREG(HDMI_TG_VACT_ST_H);
DUMPREG(HDMI_TG_VACT_SZ_L);
DUMPREG(HDMI_TG_VACT_SZ_H);
DUMPREG(HDMI_TG_FIELD_CHG_L);
DUMPREG(HDMI_TG_FIELD_CHG_H);
DUMPREG(HDMI_TG_VACT_ST2_L);
DUMPREG(HDMI_TG_VACT_ST2_H);
DUMPREG(HDMI_TG_VSYNC_TOP_HDMI_L);
DUMPREG(HDMI_TG_VSYNC_TOP_HDMI_H);
DUMPREG(HDMI_TG_VSYNC_BOT_HDMI_L);
DUMPREG(HDMI_TG_VSYNC_BOT_HDMI_H);
DUMPREG(HDMI_TG_FIELD_TOP_HDMI_L);
DUMPREG(HDMI_TG_FIELD_TOP_HDMI_H);
DUMPREG(HDMI_TG_FIELD_BOT_HDMI_L);
DUMPREG(HDMI_TG_FIELD_BOT_HDMI_H);
#undef DUMPREG
}
static const struct hdmi_timings hdmi_timings_480p = {
.hact = { .beg = 138, .end = 858 },
.hsyn_pol = 1,
.hsyn = { .beg = 16, .end = 16 + 62 },
.interlaced = 0,
.vact[0] = { .beg = 42 + 3, .end = 522 + 3 },
.vsyn_pol = 1,
.vsyn[0] = { .beg = 6 + 3, .end = 12 + 3},
};
static const struct hdmi_timings hdmi_timings_576p50 = {
.hact = { .beg = 144, .end = 864 },
.hsyn_pol = 1,
.hsyn = { .beg = 12, .end = 12 + 64 },
.interlaced = 0,
.vact[0] = { .beg = 44 + 5, .end = 620 + 5 },
.vsyn_pol = 1,
.vsyn[0] = { .beg = 0 + 5, .end = 5 + 5},
};
static const struct hdmi_timings hdmi_timings_720p60 = {
.hact = { .beg = 370, .end = 1650 },
.hsyn_pol = 0,
.hsyn = { .beg = 110, .end = 110 + 40 },
.interlaced = 0,
.vact[0] = { .beg = 25 + 5, .end = 745 + 5 },
.vsyn_pol = 0,
.vsyn[0] = { .beg = 0 + 5, .end = 5 + 5},
};
static const struct hdmi_timings hdmi_timings_720p50 = {
.hact = { .beg = 700, .end = 1980 },
.hsyn_pol = 0,
.hsyn = { .beg = 440, .end = 440 + 40 },
.interlaced = 0,
.vact[0] = { .beg = 25 + 5, .end = 745 + 5 },
.vsyn_pol = 0,
.vsyn[0] = { .beg = 0 + 5, .end = 5 + 5},
};
static const struct hdmi_timings hdmi_timings_1080p24 = {
.hact = { .beg = 830, .end = 2750 },
.hsyn_pol = 0,
.hsyn = { .beg = 638, .end = 638 + 44 },
.interlaced = 0,
.vact[0] = { .beg = 41 + 4, .end = 1121 + 4 },
.vsyn_pol = 0,
.vsyn[0] = { .beg = 0 + 4, .end = 5 + 4},
};
static const struct hdmi_timings hdmi_timings_1080p60 = {
.hact = { .beg = 280, .end = 2200 },
.hsyn_pol = 0,
.hsyn = { .beg = 88, .end = 88 + 44 },
.interlaced = 0,
.vact[0] = { .beg = 41 + 4, .end = 1121 + 4 },
.vsyn_pol = 0,
.vsyn[0] = { .beg = 0 + 4, .end = 5 + 4},
};
static const struct hdmi_timings hdmi_timings_1080i60 = {
.hact = { .beg = 280, .end = 2200 },
.hsyn_pol = 0,
.hsyn = { .beg = 88, .end = 88 + 44 },
.interlaced = 1,
.vact[0] = { .beg = 20 + 2, .end = 560 + 2 },
.vact[1] = { .beg = 583 + 2, .end = 1123 + 2 },
.vsyn_pol = 0,
.vsyn_off = 1100,
.vsyn[0] = { .beg = 0 + 2, .end = 5 + 2},
.vsyn[1] = { .beg = 562 + 2, .end = 567 + 2},
};
static const struct hdmi_timings hdmi_timings_1080i50 = {
.hact = { .beg = 720, .end = 2640 },
.hsyn_pol = 0,
.hsyn = { .beg = 528, .end = 528 + 44 },
.interlaced = 1,
.vact[0] = { .beg = 20 + 2, .end = 560 + 2 },
.vact[1] = { .beg = 583 + 2, .end = 1123 + 2 },
.vsyn_pol = 0,
.vsyn_off = 1320,
.vsyn[0] = { .beg = 0 + 2, .end = 5 + 2},
.vsyn[1] = { .beg = 562 + 2, .end = 567 + 2},
};
static const struct hdmi_timings hdmi_timings_1080p50 = {
.hact = { .beg = 720, .end = 2640 },
.hsyn_pol = 0,
.hsyn = { .beg = 528, .end = 528 + 44 },
.interlaced = 0,
.vact[0] = { .beg = 41 + 4, .end = 1121 + 4 },
.vsyn_pol = 0,
.vsyn[0] = { .beg = 0 + 4, .end = 5 + 4},
};
static const struct {
u32 preset;
const struct hdmi_timings *timings;
} hdmi_timings[] = {
{ V4L2_DV_480P59_94, &hdmi_timings_480p },
{ V4L2_DV_576P50, &hdmi_timings_576p50 },
{ V4L2_DV_720P50, &hdmi_timings_720p50 },
{ V4L2_DV_720P59_94, &hdmi_timings_720p60 },
{ V4L2_DV_720P60, &hdmi_timings_720p60 },
{ V4L2_DV_1080P24, &hdmi_timings_1080p24 },
{ V4L2_DV_1080P30, &hdmi_timings_1080p60 },
{ V4L2_DV_1080P50, &hdmi_timings_1080p50 },
{ V4L2_DV_1080I50, &hdmi_timings_1080i50 },
{ V4L2_DV_1080I60, &hdmi_timings_1080i60 },
{ V4L2_DV_1080P60, &hdmi_timings_1080p60 },
};
static const struct hdmi_timings *hdmi_preset2timings(u32 preset)
{
int i;
for (i = 0; i < ARRAY_SIZE(hdmi_timings); ++i)
if (hdmi_timings[i].preset == preset)
return hdmi_timings[i].timings;
return NULL;
}
static int hdmi_streamon(struct hdmi_device *hdev)
{
struct device *dev = hdev->dev;
struct hdmi_resources *res = &hdev->res;
int ret, tries;
dev_dbg(dev, "%s\n", __func__);
ret = hdmi_conf_apply(hdev);
if (ret)
return ret;
ret = v4l2_subdev_call(hdev->phy_sd, video, s_stream, 1);
if (ret)
return ret;
/* waiting for HDMIPHY's PLL to get to steady state */
for (tries = 100; tries; --tries) {
u32 val = hdmi_read(hdev, HDMI_PHY_STATUS);
if (val & HDMI_PHY_STATUS_READY)
break;
mdelay(1);
}
/* steady state not achieved */
if (tries == 0) {
dev_err(dev, "hdmiphy's pll could not reach steady state.\n");
v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
hdmi_dumpregs(hdev, "hdmiphy - s_stream");
return -EIO;
}
/* starting MHL */
ret = v4l2_subdev_call(hdev->mhl_sd, video, s_stream, 1);
if (hdev->mhl_sd && ret) {
v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
hdmi_dumpregs(hdev, "mhl - s_stream");
return -EIO;
}
/* hdmiphy clock is used for HDMI in streaming mode */
clk_disable(res->sclk_hdmi);
clk_set_parent(res->sclk_hdmi, res->sclk_hdmiphy);
clk_enable(res->sclk_hdmi);
/* enable HDMI and timing generator */
hdmi_write_mask(hdev, HDMI_CON_0, ~0, HDMI_EN);
hdmi_write_mask(hdev, HDMI_TG_CMD, ~0, HDMI_TG_EN);
hdmi_dumpregs(hdev, "streamon");
return 0;
}
static int hdmi_streamoff(struct hdmi_device *hdev)
{
struct device *dev = hdev->dev;
struct hdmi_resources *res = &hdev->res;
dev_dbg(dev, "%s\n", __func__);
hdmi_write_mask(hdev, HDMI_CON_0, 0, HDMI_EN);
hdmi_write_mask(hdev, HDMI_TG_CMD, 0, HDMI_TG_EN);
/* pixel(vpll) clock is used for HDMI in config mode */
clk_disable(res->sclk_hdmi);
clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
clk_enable(res->sclk_hdmi);
v4l2_subdev_call(hdev->mhl_sd, video, s_stream, 0);
v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
hdmi_dumpregs(hdev, "streamoff");
return 0;
}
static int hdmi_s_stream(struct v4l2_subdev *sd, int enable)
{
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
struct device *dev = hdev->dev;
dev_dbg(dev, "%s(%d)\n", __func__, enable);
if (enable)
return hdmi_streamon(hdev);
return hdmi_streamoff(hdev);
}
static void hdmi_resource_poweron(struct hdmi_resources *res)
{
/* turn HDMI power on */
regulator_bulk_enable(res->regul_count, res->regul_bulk);
/* power-on hdmi physical interface */
clk_enable(res->hdmiphy);
/* use VPP as parent clock; HDMIPHY is not working yet */
clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
/* turn clocks on */
clk_enable(res->sclk_hdmi);
}
static void hdmi_resource_poweroff(struct hdmi_resources *res)
{
/* turn clocks off */
clk_disable(res->sclk_hdmi);
/* power-off hdmiphy */
clk_disable(res->hdmiphy);
/* turn HDMI power off */
regulator_bulk_disable(res->regul_count, res->regul_bulk);
}
static int hdmi_s_power(struct v4l2_subdev *sd, int on)
{
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
int ret;
if (on)
ret = pm_runtime_get_sync(hdev->dev);
else
ret = pm_runtime_put_sync(hdev->dev);
/* only values < 0 indicate errors */
return IS_ERR_VALUE(ret) ? ret : 0;
}
static int hdmi_s_dv_preset(struct v4l2_subdev *sd,
struct v4l2_dv_preset *preset)
{
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
struct device *dev = hdev->dev;
const struct hdmi_timings *conf;
conf = hdmi_preset2timings(preset->preset);
if (conf == NULL) {
dev_err(dev, "preset (%u) not supported\n", preset->preset);
return -EINVAL;
}
hdev->cur_conf = conf;
hdev->cur_conf_dirty = 1;
hdev->cur_preset = preset->preset;
return 0;
}
static int hdmi_g_dv_preset(struct v4l2_subdev *sd,
struct v4l2_dv_preset *preset)
{
memset(preset, 0, sizeof(*preset));
preset->preset = sd_to_hdmi_dev(sd)->cur_preset;
return 0;
}
static int hdmi_g_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
const struct hdmi_timings *t = hdev->cur_conf;
dev_dbg(hdev->dev, "%s\n", __func__);
if (!hdev->cur_conf)
return -EINVAL;
memset(fmt, 0, sizeof *fmt);
fmt->width = t->hact.end - t->hact.beg;
fmt->height = t->vact[0].end - t->vact[0].beg;
fmt->code = V4L2_MBUS_FMT_FIXED; /* means RGB888 */
fmt->colorspace = V4L2_COLORSPACE_SRGB;
if (t->interlaced) {
fmt->field = V4L2_FIELD_INTERLACED;
fmt->height *= 2;
} else {
fmt->field = V4L2_FIELD_NONE;
}
return 0;
}
static int hdmi_enum_dv_presets(struct v4l2_subdev *sd,
struct v4l2_dv_enum_preset *preset)
{
if (preset->index >= ARRAY_SIZE(hdmi_timings))
return -EINVAL;
return v4l_fill_dv_preset_info(hdmi_timings[preset->index].preset,
preset);
}
static const struct v4l2_subdev_core_ops hdmi_sd_core_ops = {
.s_power = hdmi_s_power,
};
static const struct v4l2_subdev_video_ops hdmi_sd_video_ops = {
.s_dv_preset = hdmi_s_dv_preset,
.g_dv_preset = hdmi_g_dv_preset,
.enum_dv_presets = hdmi_enum_dv_presets,
.g_mbus_fmt = hdmi_g_mbus_fmt,
.s_stream = hdmi_s_stream,
};
static const struct v4l2_subdev_ops hdmi_sd_ops = {
.core = &hdmi_sd_core_ops,
.video = &hdmi_sd_video_ops,
};
static int hdmi_runtime_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
dev_dbg(dev, "%s\n", __func__);
v4l2_subdev_call(hdev->mhl_sd, core, s_power, 0);
hdmi_resource_poweroff(&hdev->res);
/* flag that device context is lost */
hdev->cur_conf_dirty = 1;
return 0;
}
static int hdmi_runtime_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
int ret = 0;
dev_dbg(dev, "%s\n", __func__);
hdmi_resource_poweron(&hdev->res);
/* starting MHL */
ret = v4l2_subdev_call(hdev->mhl_sd, core, s_power, 1);
if (hdev->mhl_sd && ret)
goto fail;
dev_dbg(dev, "poweron succeed\n");
return 0;
fail:
hdmi_resource_poweroff(&hdev->res);
dev_err(dev, "poweron failed\n");
return ret;
}
static const struct dev_pm_ops hdmi_pm_ops = {
.runtime_suspend = hdmi_runtime_suspend,
.runtime_resume = hdmi_runtime_resume,
};
static void hdmi_resources_cleanup(struct hdmi_device *hdev)
{
struct hdmi_resources *res = &hdev->res;
dev_dbg(hdev->dev, "HDMI resource cleanup\n");
/* put clocks, power */
if (res->regul_count)
regulator_bulk_free(res->regul_count, res->regul_bulk);
/* kfree is NULL-safe */
kfree(res->regul_bulk);
if (!IS_ERR_OR_NULL(res->hdmiphy))
clk_put(res->hdmiphy);
if (!IS_ERR_OR_NULL(res->sclk_hdmiphy))
clk_put(res->sclk_hdmiphy);
if (!IS_ERR_OR_NULL(res->sclk_pixel))
clk_put(res->sclk_pixel);
if (!IS_ERR_OR_NULL(res->sclk_hdmi))
clk_put(res->sclk_hdmi);
if (!IS_ERR_OR_NULL(res->hdmi))
clk_put(res->hdmi);
memset(res, 0, sizeof *res);
}
static int hdmi_resources_init(struct hdmi_device *hdev)
{
struct device *dev = hdev->dev;
struct hdmi_resources *res = &hdev->res;
static char *supply[] = {
"hdmi-en",
"vdd",
"vdd_osc",
"vdd_pll",
};
int i, ret;
dev_dbg(dev, "HDMI resource init\n");
memset(res, 0, sizeof *res);
/* get clocks, power */
res->hdmi = clk_get(dev, "hdmi");
if (IS_ERR_OR_NULL(res->hdmi)) {
dev_err(dev, "failed to get clock 'hdmi'\n");
goto fail;
}
res->sclk_hdmi = clk_get(dev, "sclk_hdmi");
if (IS_ERR_OR_NULL(res->sclk_hdmi)) {
dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
goto fail;
}
res->sclk_pixel = clk_get(dev, "sclk_pixel");
if (IS_ERR_OR_NULL(res->sclk_pixel)) {
dev_err(dev, "failed to get clock 'sclk_pixel'\n");
goto fail;
}
res->sclk_hdmiphy = clk_get(dev, "sclk_hdmiphy");
if (IS_ERR_OR_NULL(res->sclk_hdmiphy)) {
dev_err(dev, "failed to get clock 'sclk_hdmiphy'\n");
goto fail;
}
res->hdmiphy = clk_get(dev, "hdmiphy");
if (IS_ERR_OR_NULL(res->hdmiphy)) {
dev_err(dev, "failed to get clock 'hdmiphy'\n");
goto fail;
}
res->regul_bulk = kcalloc(ARRAY_SIZE(supply),
sizeof(res->regul_bulk[0]), GFP_KERNEL);
if (!res->regul_bulk) {
dev_err(dev, "failed to get memory for regulators\n");
goto fail;
}
for (i = 0; i < ARRAY_SIZE(supply); ++i) {
res->regul_bulk[i].supply = supply[i];
res->regul_bulk[i].consumer = NULL;
}
ret = regulator_bulk_get(dev, ARRAY_SIZE(supply), res->regul_bulk);
if (ret) {
dev_err(dev, "failed to get regulators\n");
goto fail;
}
res->regul_count = ARRAY_SIZE(supply);
return 0;
fail:
dev_err(dev, "HDMI resource init - failed\n");
hdmi_resources_cleanup(hdev);
return -ENODEV;
}
static int __devinit hdmi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct i2c_adapter *adapter;
struct v4l2_subdev *sd;
struct hdmi_device *hdmi_dev = NULL;
struct s5p_hdmi_platform_data *pdata = dev->platform_data;
int ret;
dev_dbg(dev, "probe start\n");
if (!pdata) {
dev_err(dev, "platform data is missing\n");
ret = -ENODEV;
goto fail;
}
hdmi_dev = devm_kzalloc(&pdev->dev, sizeof(*hdmi_dev), GFP_KERNEL);
if (!hdmi_dev) {
dev_err(dev, "out of memory\n");
ret = -ENOMEM;
goto fail;
}
hdmi_dev->dev = dev;
ret = hdmi_resources_init(hdmi_dev);
if (ret)
goto fail;
/* mapping HDMI registers */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(dev, "get memory resource failed.\n");
ret = -ENXIO;
goto fail_init;
}
hdmi_dev->regs = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (hdmi_dev->regs == NULL) {
dev_err(dev, "register mapping failed.\n");
ret = -ENXIO;
goto fail_init;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
dev_err(dev, "get interrupt resource failed.\n");
ret = -ENXIO;
goto fail_init;
}
ret = devm_request_irq(&pdev->dev, res->start, hdmi_irq_handler, 0,
"hdmi", hdmi_dev);
if (ret) {
dev_err(dev, "request interrupt failed.\n");
goto fail_init;
}
hdmi_dev->irq = res->start;
/* setting v4l2 name to prevent WARN_ON in v4l2_device_register */
strlcpy(hdmi_dev->v4l2_dev.name, dev_name(dev),
sizeof(hdmi_dev->v4l2_dev.name));
/* passing NULL owner prevents driver from erasing drvdata */
ret = v4l2_device_register(NULL, &hdmi_dev->v4l2_dev);
if (ret) {
dev_err(dev, "could not register v4l2 device.\n");
goto fail_init;
}
/* testing if hdmiphy info is present */
if (!pdata->hdmiphy_info) {
dev_err(dev, "hdmiphy info is missing in platform data\n");
ret = -ENXIO;
goto fail_vdev;
}
adapter = i2c_get_adapter(pdata->hdmiphy_bus);
if (adapter == NULL) {
dev_err(dev, "hdmiphy adapter request failed\n");
ret = -ENXIO;
goto fail_vdev;
}
hdmi_dev->phy_sd = v4l2_i2c_new_subdev_board(&hdmi_dev->v4l2_dev,
adapter, pdata->hdmiphy_info, NULL);
/* on failure or not adapter is no longer useful */
i2c_put_adapter(adapter);
if (hdmi_dev->phy_sd == NULL) {
dev_err(dev, "missing subdev for hdmiphy\n");
ret = -ENODEV;
goto fail_vdev;
}
/* initialization of MHL interface if present */
if (pdata->mhl_info) {
adapter = i2c_get_adapter(pdata->mhl_bus);
if (adapter == NULL) {
dev_err(dev, "MHL adapter request failed\n");
ret = -ENXIO;
goto fail_vdev;
}
hdmi_dev->mhl_sd = v4l2_i2c_new_subdev_board(
&hdmi_dev->v4l2_dev, adapter,
pdata->mhl_info, NULL);
/* on failure or not adapter is no longer useful */
i2c_put_adapter(adapter);
if (hdmi_dev->mhl_sd == NULL) {
dev_err(dev, "missing subdev for MHL\n");
ret = -ENODEV;
goto fail_vdev;
}
}
clk_enable(hdmi_dev->res.hdmi);
pm_runtime_enable(dev);
sd = &hdmi_dev->sd;
v4l2_subdev_init(sd, &hdmi_sd_ops);
sd->owner = THIS_MODULE;
strlcpy(sd->name, "s5p-hdmi", sizeof sd->name);
hdmi_dev->cur_preset = HDMI_DEFAULT_PRESET;
/* FIXME: missing fail preset is not supported */
hdmi_dev->cur_conf = hdmi_preset2timings(hdmi_dev->cur_preset);
hdmi_dev->cur_conf_dirty = 1;
/* storing subdev for call that have only access to struct device */
dev_set_drvdata(dev, sd);
dev_info(dev, "probe successful\n");
return 0;
fail_vdev:
v4l2_device_unregister(&hdmi_dev->v4l2_dev);
fail_init:
hdmi_resources_cleanup(hdmi_dev);
fail:
dev_err(dev, "probe failed\n");
return ret;
}
static int __devexit hdmi_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct hdmi_device *hdmi_dev = sd_to_hdmi_dev(sd);
pm_runtime_disable(dev);
clk_disable(hdmi_dev->res.hdmi);
v4l2_device_unregister(&hdmi_dev->v4l2_dev);
disable_irq(hdmi_dev->irq);
hdmi_resources_cleanup(hdmi_dev);
dev_info(dev, "remove successful\n");
return 0;
}
static struct platform_driver hdmi_driver __refdata = {
.probe = hdmi_probe,
.remove = __devexit_p(hdmi_remove),
.id_table = hdmi_driver_types,
.driver = {
.name = "s5p-hdmi",
.owner = THIS_MODULE,
.pm = &hdmi_pm_ops,
}
};
module_platform_driver(hdmi_driver);
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