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android13/kernel-5.10/drivers/gpu/drm/rockchip/rk628/rk628_hdmi.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020 Rockchip Electronics Co. Ltd.
*
* Author: Chen Shunqing <csq@rock-chips.com>
*/
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/extcon.h>
#include <linux/extcon-provider.h>
#include <linux/hdmi.h>
#include <linux/mfd/rk628.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <drm/drm_of.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_edid.h>
#include <sound/hdmi-codec.h>
#include "../rockchip_drm_drv.h"
#define HDMI_BASE 0x70000
#define HDMI_REG_STRIDE 4
#define DDC_SEGMENT_ADDR 0x30
enum PWR_MODE {
NORMAL,
LOWER_PWR,
};
#define HDMI_SCL_RATE (100 * 1000)
#define DDC_BUS_FREQ_L 0x4b
#define DDC_BUS_FREQ_H 0x4c
#define HDMI_SYS_CTRL 0x00
#define RST_ANALOG_MASK BIT(6)
#define NOT_RST_ANALOG(x) UPDATE(x, 6, 6)
#define RST_DIGITAL_MASK BIT(5)
#define NOT_RST_DIGITAL(x) UPDATE(x, 5, 5)
#define REG_CLK_INV_MASK BIT(4)
#define REG_CLK_INV(x) UPDATE(x, 4, 4)
#define VCLK_INV_MASK BIT(3)
#define VCLK_INV(x) UPDATE(x, 3, 3)
#define REG_CLK_SOURCE_MASK BIT(2)
#define REG_CLK_SOURCE(x) UPDATE(x, 2, 2)
#define POWER_MASK BIT(1)
#define PWR_OFF(x) UPDATE(x, 1, 1)
#define INT_POL_MASK BIT(0)
#define INT_POL(x) UPDATE(x, 0, 0)
#define HDMI_VIDEO_CONTROL1 0x01
#define VIDEO_INPUT_FORMAT_MASK GENMASK(3, 1)
#define VIDEO_INPUT_SDR_RGB444 UPDATE(0x0, 3, 1)
#define VIDEO_INPUT_DDR_RGB444 UPDATE(0x5, 3, 1)
#define VIDEO_INPUT_DDR_YCBCR422 UPDATE(0x6, 3, 1)
#define DE_SOURCE_MASK BIT(0)
#define DE_SOURCE(x) UPDATE(x, 0, 0)
#define HDMI_VIDEO_CONTROL2 0x02
#define VIDEO_OUTPUT_COLOR_MASK GENMASK(7, 6)
#define VIDEO_OUTPUT_RRGB444 UPDATE(0x0, 7, 6)
#define VIDEO_OUTPUT_YCBCR444 UPDATE(0x1, 7, 6)
#define VIDEO_OUTPUT_YCBCR422 UPDATE(0x2, 7, 6)
#define VIDEO_INPUT_BITS_MASK GENMASK(5, 4)
#define VIDEO_INPUT_12BITS UPDATE(0x0, 5, 4)
#define VIDEO_INPUT_10BITS UPDATE(0x1, 5, 4)
#define VIDEO_INPUT_REVERT UPDATE(0x2, 5, 4)
#define VIDEO_INPUT_8BITS UPDATE(0x3, 5, 4)
#define VIDEO_INPUT_CSP_MASK BIT(1)
#define VIDEO_INPUT_CSP(x) UPDATE(x, 0, 0)
#define HDMI_VIDEO_CONTROL 0x03
#define VIDEO_AUTO_CSC_MASK BIT(7)
#define VIDEO_AUTO_CSC(x) UPDATE(x, 7, 7)
#define VIDEO_C0_C2_SWAP_MASK BIT(0)
#define VIDEO_C0_C2_SWAP(x) UPDATE(x, 0, 0)
enum {
C0_C2_CHANGE_ENABLE = 0,
C0_C2_CHANGE_DISABLE = 1,
AUTO_CSC_DISABLE = 0,
AUTO_CSC_ENABLE = 1,
};
#define HDMI_VIDEO_CONTROL3 0x04
#define COLOR_DEPTH_NOT_INDICATED_MASK BIT(4)
#define COLOR_DEPTH_NOT_INDICATED(x) UPDATE(x, 4, 4)
#define SOF_MASK BIT(3)
#define SOF_DISABLE(x) UPDATE(x, 3, 3)
#define CSC_MASK BIT(0)
#define CSC_ENABLE(x) UPDATE(x, 0, 0)
#define HDMI_AV_MUTE 0x05
#define AVMUTE_CLEAR_MASK BIT(7)
#define AVMUTE_CLEAR(x) UPDATE(x, 7, 7)
#define AVMUTE_ENABLE_MASK BIT(6)
#define AVMUTE_ENABLE(x) UPDATE(x, 6, 6)
#define AUDIO_PD_MASK BIT(2)
#define AUDIO_PD(x) UPDATE(x, 2, 2)
#define AUDIO_MUTE_MASK BIT(1)
#define AUDIO_MUTE(x) UPDATE(x, 1, 1)
#define VIDEO_BLACK_MASK BIT(0)
#define VIDEO_MUTE(x) UPDATE(x, 0, 0)
#define HDMI_VIDEO_TIMING_CTL 0x08
#define HSYNC_POLARITY(x) UPDATE(x, 3, 3)
#define VSYNC_POLARITY(x) UPDATE(x, 2, 2)
#define INETLACE(x) UPDATE(x, 1, 1)
#define EXTERANL_VIDEO(x) UPDATE(x, 0, 0)
#define HDMI_VIDEO_EXT_HTOTAL_L 0x09
#define HDMI_VIDEO_EXT_HTOTAL_H 0x0a
#define HDMI_VIDEO_EXT_HBLANK_L 0x0b
#define HDMI_VIDEO_EXT_HBLANK_H 0x0c
#define HDMI_VIDEO_EXT_HDELAY_L 0x0d
#define HDMI_VIDEO_EXT_HDELAY_H 0x0e
#define HDMI_VIDEO_EXT_HDURATION_L 0x0f
#define HDMI_VIDEO_EXT_HDURATION_H 0x10
#define HDMI_VIDEO_EXT_VTOTAL_L 0x11
#define HDMI_VIDEO_EXT_VTOTAL_H 0x12
#define HDMI_VIDEO_EXT_VBLANK 0x13
#define HDMI_VIDEO_EXT_VDELAY 0x14
#define HDMI_VIDEO_EXT_VDURATION 0x15
#define HDMI_VIDEO_CSC_COEF 0x18
#define HDMI_AUDIO_CTRL1 0x35
enum {
CTS_SOURCE_INTERNAL = 0,
CTS_SOURCE_EXTERNAL = 1,
};
#define CTS_SOURCE(x) UPDATE(x, 7, 7)
enum {
DOWNSAMPLE_DISABLE = 0,
DOWNSAMPLE_1_2 = 1,
DOWNSAMPLE_1_4 = 2,
};
#define DOWN_SAMPLE(x) UPDATE(x, 6, 5)
enum {
AUDIO_SOURCE_IIS = 0,
AUDIO_SOURCE_SPDIF = 1,
};
#define AUDIO_SOURCE(x) UPDATE(x, 4, 3)
#define MCLK_ENABLE(x) UPDATE(x, 2, 2)
enum {
MCLK_128FS = 0,
MCLK_256FS = 1,
MCLK_384FS = 2,
MCLK_512FS = 3,
};
#define MCLK_RATIO(x) UPDATE(x, 1, 0)
#define AUDIO_SAMPLE_RATE 0x37
enum {
AUDIO_32K = 0x3,
AUDIO_441K = 0x0,
AUDIO_48K = 0x2,
AUDIO_882K = 0x8,
AUDIO_96K = 0xa,
AUDIO_1764K = 0xc,
AUDIO_192K = 0xe,
};
#define AUDIO_I2S_MODE 0x38
enum {
I2S_CHANNEL_1_2 = 1,
I2S_CHANNEL_3_4 = 3,
I2S_CHANNEL_5_6 = 7,
I2S_CHANNEL_7_8 = 0xf
};
#define I2S_CHANNEL(x) UPDATE(x, 5, 2)
enum {
I2S_STANDARD = 0,
I2S_LEFT_JUSTIFIED = 1,
I2S_RIGHT_JUSTIFIED = 2,
};
#define I2S_MODE(x) UPDATE(x, 1, 0)
#define AUDIO_I2S_MAP 0x39
#define AUDIO_I2S_SWAPS_SPDIF 0x3a
#define N_32K 0x1000
#define N_441K 0x1880
#define N_882K 0x3100
#define N_1764K 0x6200
#define N_48K 0x1800
#define N_96K 0x3000
#define N_192K 0x6000
#define HDMI_AUDIO_CHANNEL_STATUS 0x3e
#define AUDIO_STATUS_NLPCM_MASK BIT(7)
#define AUDIO_STATUS_NLPCM(x) UPDATE(x, 7, 7)
#define AUDIO_STATUS_USE_MASK BIT(6)
#define AUDIO_STATUS_COPYRIGHT_MASK BIT(5)
#define AUDIO_STATUS_ADDITION_MASK GENMASK(3, 2)
#define AUDIO_STATUS_CLK_ACCURACY_MASK GENMASK(1, 1)
#define AUDIO_N_H 0x3f
#define AUDIO_N_M 0x40
#define AUDIO_N_L 0x41
#define HDMI_AUDIO_CTS_H 0x45
#define HDMI_AUDIO_CTS_M 0x46
#define HDMI_AUDIO_CTS_L 0x47
#define HDMI_DDC_CLK_L 0x4b
#define HDMI_DDC_CLK_H 0x4c
#define HDMI_EDID_SEGMENT_POINTER 0x4d
#define HDMI_EDID_WORD_ADDR 0x4e
#define HDMI_EDID_FIFO_OFFSET 0x4f
#define HDMI_EDID_FIFO_ADDR 0x50
#define HDMI_PACKET_SEND_MANUAL 0x9c
#define HDMI_PACKET_SEND_AUTO 0x9d
#define PACKET_GCP_EN_MASK BIT(7)
#define PACKET_GCP_EN(x) UPDATE(x, 7, 7)
#define PACKET_MSI_EN_MASK BIT(6)
#define PACKET_MSI_EN(x) UPDATE(x, 6, 6)
#define PACKET_SDI_EN_MASK BIT(5)
#define PACKET_SDI_EN(x) UPDATE(x, 5, 5)
#define PACKET_VSI_EN_MASK BIT(4)
#define PACKET_VSI_EN(x) UPDATE(x, 4, 4)
#define HDMI_CONTROL_PACKET_BUF_INDEX 0x9f
enum {
INFOFRAME_VSI = 0x05,
INFOFRAME_AVI = 0x06,
INFOFRAME_AAI = 0x08,
};
#define HDMI_CONTROL_PACKET_ADDR 0xa0
#define HDMI_MAXIMUM_INFO_FRAME_SIZE 0x11
enum {
AVI_COLOR_MODE_RGB = 0,
AVI_COLOR_MODE_YCBCR422 = 1,
AVI_COLOR_MODE_YCBCR444 = 2,
AVI_COLORIMETRY_NO_DATA = 0,
AVI_COLORIMETRY_SMPTE_170M = 1,
AVI_COLORIMETRY_ITU709 = 2,
AVI_COLORIMETRY_EXTENDED = 3,
AVI_CODED_FRAME_ASPECT_NO_DATA = 0,
AVI_CODED_FRAME_ASPECT_4_3 = 1,
AVI_CODED_FRAME_ASPECT_16_9 = 2,
ACTIVE_ASPECT_RATE_SAME_AS_CODED_FRAME = 0x08,
ACTIVE_ASPECT_RATE_4_3 = 0x09,
ACTIVE_ASPECT_RATE_16_9 = 0x0A,
ACTIVE_ASPECT_RATE_14_9 = 0x0B,
};
#define HDMI_HDCP_CTRL 0x52
#define HDMI_DVI_MASK BIT(1)
#define HDMI_DVI(x) UPDATE(x, 1, 1)
#define HDMI_INTERRUPT_MASK1 0xc0
#define INT_EDID_READY_MASK BIT(2)
#define HDMI_INTERRUPT_STATUS1 0xc1
#define INT_ACTIVE_VSYNC_MASK BIT(5)
#define INT_EDID_READY BIT(2)
#define HDMI_INTERRUPT_MASK2 0xc2
#define HDMI_INTERRUPT_STATUS2 0xc3
#define INT_HDCP_ERR BIT(7)
#define INT_BKSV_FLAG BIT(6)
#define INT_HDCP_OK BIT(4)
#define HDMI_STATUS 0xc8
#define HOTPLUG_STATUS BIT(7)
#define MASK_INT_HOTPLUG_MASK BIT(5)
#define MASK_INT_HOTPLUG(x) UPDATE(x, 5, 5)
#define INT_HOTPLUG BIT(1)
#define HDMI_COLORBAR 0xc9
#define HDMI_PHY_SYNC 0xce
#define HDMI_PHY_SYS_CTL 0xe0
#define TMDS_CLK_SOURCE_MASK BIT(5)
#define TMDS_CLK_SOURCE(x) UPDATE(x, 5, 5)
#define PHASE_CLK_MASK BIT(4)
#define PHASE_CLK(x) UPDATE(x, 4, 4)
#define TMDS_PHASE_SEL_MASK BIT(3)
#define TMDS_PHASE_SEL(x) UPDATE(x, 3, 3)
#define BANDGAP_PWR_MASK BIT(2)
#define BANDGAP_PWR(x) UPDATE(x, 2, 2)
#define PLL_PWR_DOWN_MASK BIT(1)
#define PLL_PWR_DOWN(x) UPDATE(x, 1, 1)
#define TMDS_CHG_PWR_DOWN_MASK BIT(0)
#define TMDS_CHG_PWR_DOWN(x) UPDATE(x, 0, 0)
#define HDMI_PHY_CHG_PWR 0xe1
#define CLK_CHG_PWR(x) UPDATE(x, 3, 3)
#define DATA_CHG_PWR(x) UPDATE(x, 2, 0)
#define HDMI_PHY_DRIVER 0xe2
#define CLK_MAIN_DRIVER(x) UPDATE(x, 7, 4)
#define DATA_MAIN_DRIVER(x) UPDATE(x, 3, 0)
#define HDMI_PHY_PRE_EMPHASIS 0xe3
#define PRE_EMPHASIS(x) UPDATE(x, 6, 4)
#define CLK_PRE_DRIVER(x) UPDATE(x, 3, 2)
#define DATA_PRE_DRIVER(x) UPDATE(x, 1, 0)
#define PHY_FEEDBACK_DIV_RATIO_LOW 0xe7
#define FEEDBACK_DIV_LOW(x) UPDATE(x, 7, 0)
#define PHY_FEEDBACK_DIV_RATIO_HIGH 0xe8
#define FEEDBACK_DIV_HIGH(x) UPDATE(x, 0, 0)
#define HDMI_PHY_PRE_DIV_RATIO 0xed
#define PRE_DIV_RATIO(x) UPDATE(x, 4, 0)
#define HDMI_CEC_CTRL 0xd0
#define ADJUST_FOR_HISENSE_MASK BIT(6)
#define REJECT_RX_BROADCAST_MASK BIT(5)
#define BUSFREETIME_ENABLE_MASK BIT(2)
#define REJECT_RX_MASK BIT(1)
#define START_TX_MASK BIT(0)
#define HDMI_CEC_DATA 0xd1
#define HDMI_CEC_TX_OFFSET 0xd2
#define HDMI_CEC_RX_OFFSET 0xd3
#define HDMI_CEC_CLK_H 0xd4
#define HDMI_CEC_CLK_L 0xd5
#define HDMI_CEC_TX_LENGTH 0xd6
#define HDMI_CEC_RX_LENGTH 0xd7
#define HDMI_CEC_TX_INT_MASK 0xd8
#define TX_DONE_MASK BIT(3)
#define TX_NOACK_MASK BIT(2)
#define TX_BROADCAST_REJ_MASK BIT(1)
#define TX_BUSNOTFREE_MASK BIT(0)
#define HDMI_CEC_RX_INT_MASK 0xd9
#define RX_LA_ERR_MASK BIT(4)
#define RX_GLITCH_MASK BIT(3)
#define RX_DONE_MASK BIT(0)
#define HDMI_CEC_TX_INT 0xda
#define HDMI_CEC_RX_INT 0xdb
#define HDMI_CEC_BUSFREETIME_L 0xdc
#define HDMI_CEC_BUSFREETIME_H 0xdd
#define HDMI_CEC_LOGICADDR 0xde
#define HDMI_REG(x) (HDMI_BASE + (x) * HDMI_REG_STRIDE)
#define HDMI_MAX_REG HDMI_REG(0xed)
struct audio_info {
int sample_rate;
int channels;
int sample_width;
};
struct hdmi_data_info {
int vic;
bool sink_is_hdmi;
bool sink_has_audio;
unsigned int enc_in_format;
unsigned int enc_out_format;
unsigned int colorimetry;
};
struct rk628_hdmi_i2c {
struct i2c_adapter adap;
u8 ddc_addr;
u8 segment_addr;
/* i2c lock */
struct mutex lock;
};
struct rk628_hdmi_phy_config {
unsigned long mpixelclock;
u8 pre_emphasis; /* pre-emphasis value */
u8 vlev_ctr; /* voltage level control */
};
struct rk628_hdmi {
struct device *dev;
int irq;
struct regmap *grf;
struct regmap *regmap;
struct rk628 *parent;
struct clk *pclk;
struct clk *dclk;
struct drm_bridge bridge;
struct drm_connector connector;
struct rk628_hdmi_i2c *i2c;
struct i2c_adapter *ddc;
unsigned int tmds_rate;
struct platform_device *audio_pdev;
bool audio_enable;
struct hdmi_data_info hdmi_data;
struct drm_display_mode previous_mode;
struct rockchip_drm_sub_dev sub_dev;
struct extcon_dev *extcon;
};
static const unsigned int rk628_hdmi_cable[] = {
EXTCON_DISP_HDMI,
EXTCON_NONE,
};
enum {
CSC_ITU601_16_235_TO_RGB_0_255_8BIT,
CSC_ITU601_0_255_TO_RGB_0_255_8BIT,
CSC_ITU709_16_235_TO_RGB_0_255_8BIT,
CSC_RGB_0_255_TO_ITU601_16_235_8BIT,
CSC_RGB_0_255_TO_ITU709_16_235_8BIT,
CSC_RGB_0_255_TO_RGB_16_235_8BIT,
};
static const char coeff_csc[][24] = {
/*
* YUV2RGB:601 SD mode(Y[16:235], UV[16:240], RGB[0:255]):
* R = 1.164*Y + 1.596*V - 204
* G = 1.164*Y - 0.391*U - 0.813*V + 154
* B = 1.164*Y + 2.018*U - 258
*/
{
0x04, 0xa7, 0x00, 0x00, 0x06, 0x62, 0x02, 0xcc,
0x04, 0xa7, 0x11, 0x90, 0x13, 0x40, 0x00, 0x9a,
0x04, 0xa7, 0x08, 0x12, 0x00, 0x00, 0x03, 0x02
},
/*
* YUV2RGB:601 SD mode(YUV[0:255],RGB[0:255]):
* R = Y + 1.402*V - 248
* G = Y - 0.344*U - 0.714*V + 135
* B = Y + 1.772*U - 227
*/
{
0x04, 0x00, 0x00, 0x00, 0x05, 0x9b, 0x02, 0xf8,
0x04, 0x00, 0x11, 0x60, 0x12, 0xdb, 0x00, 0x87,
0x04, 0x00, 0x07, 0x16, 0x00, 0x00, 0x02, 0xe3
},
/*
* YUV2RGB:709 HD mode(Y[16:235],UV[16:240],RGB[0:255]):
* R = 1.164*Y + 1.793*V - 248
* G = 1.164*Y - 0.213*U - 0.534*V + 77
* B = 1.164*Y + 2.115*U - 289
*/
{
0x04, 0xa7, 0x00, 0x00, 0x07, 0x2c, 0x02, 0xf8,
0x04, 0xa7, 0x10, 0xda, 0x12, 0x22, 0x00, 0x4d,
0x04, 0xa7, 0x08, 0x74, 0x00, 0x00, 0x03, 0x21
},
/*
* RGB2YUV:601 SD mode:
* Cb = -0.291G - 0.148R + 0.439B + 128
* Y = 0.504G + 0.257R + 0.098B + 16
* Cr = -0.368G + 0.439R - 0.071B + 128
*/
{
0x11, 0x5f, 0x01, 0x82, 0x10, 0x23, 0x00, 0x80,
0x02, 0x1c, 0x00, 0xa1, 0x00, 0x36, 0x00, 0x1e,
0x11, 0x29, 0x10, 0x59, 0x01, 0x82, 0x00, 0x80
},
/*
* RGB2YUV:709 HD mode:
* Cb = - 0.338G - 0.101R + 0.439B + 128
* Y = 0.614G + 0.183R + 0.062B + 16
* Cr = - 0.399G + 0.439R - 0.040B + 128
*/
{
0x11, 0x98, 0x01, 0xc1, 0x10, 0x28, 0x00, 0x80,
0x02, 0x74, 0x00, 0xbb, 0x00, 0x3f, 0x00, 0x10,
0x11, 0x5a, 0x10, 0x67, 0x01, 0xc1, 0x00, 0x80
},
/*
* RGB[0:255]2RGB[16:235]:
* R' = R x (235-16)/255 + 16;
* G' = G x (235-16)/255 + 16;
* B' = B x (235-16)/255 + 16;
*/
{
0x00, 0x00, 0x03, 0x6F, 0x00, 0x00, 0x00, 0x10,
0x03, 0x6F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
0x00, 0x00, 0x00, 0x00, 0x03, 0x6F, 0x00, 0x10
},
};
static inline struct rk628_hdmi *bridge_to_hdmi(struct drm_bridge *b)
{
return container_of(b, struct rk628_hdmi, bridge);
}
static inline struct rk628_hdmi *connector_to_hdmi(struct drm_connector *c)
{
return container_of(c, struct rk628_hdmi, connector);
}
static inline u32 hdmi_readb(struct rk628_hdmi *hdmi, u32 offset)
{
u32 val;
regmap_read(hdmi->regmap, (HDMI_BASE + ((offset) * HDMI_REG_STRIDE)),
&val);
return val;
}
static inline void hdmi_writeb(struct rk628_hdmi *hdmi, u32 offset, u32 val)
{
regmap_write(hdmi->regmap, (HDMI_BASE + ((offset) * HDMI_REG_STRIDE)),
val);
}
static inline void hdmi_modb(struct rk628_hdmi *hdmi, u32 offset,
u32 msk, u32 val)
{
u8 temp = hdmi_readb(hdmi, offset) & ~msk;
temp |= val & msk;
hdmi_writeb(hdmi, offset, temp);
}
static void rk628_hdmi_i2c_init(struct rk628_hdmi *hdmi)
{
int ddc_bus_freq;
ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE;
hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF);
hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF);
/* Clear the EDID interrupt flag and mute the interrupt */
hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, INT_EDID_READY);
}
static void rk628_hdmi_sys_power(struct rk628_hdmi *hdmi, bool enable)
{
if (enable)
hdmi_modb(hdmi, HDMI_SYS_CTRL, POWER_MASK, PWR_OFF(0));
else
hdmi_modb(hdmi, HDMI_SYS_CTRL, POWER_MASK, PWR_OFF(1));
}
static struct rk628_hdmi_phy_config rk628_hdmi_phy_config[] = {
/* pixelclk pre-emp vlev */
{ 74250000, 0x3f, 0x88 },
{ 165000000, 0x3f, 0x88 },
{ ~0UL, 0x00, 0x00 }
};
static void rk628_hdmi_set_pwr_mode(struct rk628_hdmi *hdmi, int mode)
{
const struct rk628_hdmi_phy_config *phy_config =
rk628_hdmi_phy_config;
switch (mode) {
case NORMAL:
rk628_hdmi_sys_power(hdmi, false);
for (; phy_config->mpixelclock != ~0UL; phy_config++)
if (hdmi->tmds_rate <= phy_config->mpixelclock)
break;
if (!phy_config->mpixelclock)
return;
hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS,
phy_config->pre_emphasis);
hdmi_writeb(hdmi, HDMI_PHY_DRIVER, phy_config->vlev_ctr);
hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14);
hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10);
hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f);
hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00);
hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01);
rk628_hdmi_sys_power(hdmi, true);
break;
case LOWER_PWR:
rk628_hdmi_sys_power(hdmi, false);
hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00);
hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00);
hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00);
hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
break;
default:
dev_err(hdmi->dev, "Unknown power mode %d\n", mode);
}
}
static void rk628_hdmi_reset(struct rk628_hdmi *hdmi)
{
u32 val;
u32 msk;
hdmi_modb(hdmi, HDMI_SYS_CTRL, RST_DIGITAL_MASK, NOT_RST_DIGITAL(1));
usleep_range(100, 110);
hdmi_modb(hdmi, HDMI_SYS_CTRL, RST_ANALOG_MASK, NOT_RST_ANALOG(1));
usleep_range(100, 110);
msk = REG_CLK_INV_MASK | REG_CLK_SOURCE_MASK | POWER_MASK |
INT_POL_MASK;
val = REG_CLK_INV(1) | REG_CLK_SOURCE(1) | PWR_OFF(0) | INT_POL(1);
hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val);
rk628_hdmi_set_pwr_mode(hdmi, NORMAL);
}
static int rk628_hdmi_upload_frame(struct rk628_hdmi *hdmi, int setup_rc,
union hdmi_infoframe *frame, u32 frame_index,
u32 mask, u32 disable, u32 enable)
{
if (mask)
hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable);
hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index);
if (setup_rc >= 0) {
u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
ssize_t rc, i;
rc = hdmi_infoframe_pack(frame, packed_frame,
sizeof(packed_frame));
if (rc < 0)
return rc;
for (i = 0; i < rc; i++)
hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i,
packed_frame[i]);
if (mask)
hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, enable);
}
return setup_rc;
}
static int rk628_hdmi_config_video_vsi(struct rk628_hdmi *hdmi,
struct drm_display_mode *mode)
{
union hdmi_infoframe frame;
int rc;
rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
&hdmi->connector,
mode);
return rk628_hdmi_upload_frame(hdmi, rc, &frame,
INFOFRAME_VSI, PACKET_VSI_EN_MASK,
PACKET_VSI_EN(0), PACKET_VSI_EN(1));
}
static int rk628_hdmi_config_video_avi(struct rk628_hdmi *hdmi,
struct drm_display_mode *mode)
{
union hdmi_infoframe frame;
int rc;
rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
&hdmi->connector, mode);
if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444)
frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
else if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV422)
frame.avi.colorspace = HDMI_COLORSPACE_YUV422;
else
frame.avi.colorspace = HDMI_COLORSPACE_RGB;
if (frame.avi.colorspace != HDMI_COLORSPACE_RGB)
frame.avi.colorimetry = hdmi->hdmi_data.colorimetry;
frame.avi.scan_mode = HDMI_SCAN_MODE_NONE;
return rk628_hdmi_upload_frame(hdmi, rc, &frame,
INFOFRAME_AVI, 0, 0, 0);
}
static int rk628_hdmi_config_audio_aai(struct rk628_hdmi *hdmi,
struct audio_info *audio)
{
struct hdmi_audio_infoframe *faudio;
union hdmi_infoframe frame;
int rc;
rc = hdmi_audio_infoframe_init(&frame.audio);
faudio = (struct hdmi_audio_infoframe *)&frame;
faudio->channels = audio->channels;
return rk628_hdmi_upload_frame(hdmi, rc, &frame,
INFOFRAME_AAI, 0, 0, 0);
}
static int rk628_hdmi_config_video_csc(struct rk628_hdmi *hdmi)
{
struct hdmi_data_info *data = &hdmi->hdmi_data;
int c0_c2_change = 0;
int csc_enable = 0;
int csc_mode = 0;
int auto_csc = 0;
int value;
int i;
/* Input video mode is SDR RGB24bit, data enable signal from external */
hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL1, DE_SOURCE(1) |
VIDEO_INPUT_SDR_RGB444);
/* Input color hardcode to RGB, and output color hardcode to RGB888 */
value = VIDEO_INPUT_8BITS | VIDEO_OUTPUT_RRGB444 |
VIDEO_INPUT_CSP(0);
hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL2, value);
if (data->enc_in_format == data->enc_out_format) {
if ((data->enc_in_format == HDMI_COLORSPACE_RGB) ||
(data->enc_in_format >= HDMI_COLORSPACE_YUV444)) {
value = SOF_DISABLE(1) | COLOR_DEPTH_NOT_INDICATED(1);
hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL3, value);
hdmi_modb(hdmi, HDMI_VIDEO_CONTROL,
VIDEO_AUTO_CSC_MASK | VIDEO_C0_C2_SWAP_MASK,
VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
return 0;
}
}
if (data->colorimetry == HDMI_COLORIMETRY_ITU_601) {
if ((data->enc_in_format == HDMI_COLORSPACE_RGB) &&
(data->enc_out_format == HDMI_COLORSPACE_YUV444)) {
csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = CSC_ENABLE(1);
} else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) &&
(data->enc_out_format == HDMI_COLORSPACE_RGB)) {
csc_mode = CSC_ITU601_16_235_TO_RGB_0_255_8BIT;
auto_csc = AUTO_CSC_ENABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = CSC_ENABLE(0);
}
} else {
if ((data->enc_in_format == HDMI_COLORSPACE_RGB) &&
(data->enc_out_format == HDMI_COLORSPACE_YUV444)) {
csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = CSC_ENABLE(1);
} else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) &&
(data->enc_out_format == HDMI_COLORSPACE_RGB)) {
csc_mode = CSC_ITU709_16_235_TO_RGB_0_255_8BIT;
auto_csc = AUTO_CSC_ENABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = CSC_ENABLE(0);
}
}
for (i = 0; i < 24; i++)
hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i,
coeff_csc[csc_mode][i]);
value = SOF_DISABLE(1) | csc_enable | COLOR_DEPTH_NOT_INDICATED(1);
hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL3, value);
hdmi_modb(hdmi, HDMI_VIDEO_CONTROL,
VIDEO_AUTO_CSC_MASK | VIDEO_C0_C2_SWAP_MASK,
VIDEO_AUTO_CSC(auto_csc) | VIDEO_C0_C2_SWAP(c0_c2_change));
return 0;
}
static int rk628_hdmi_config_video_timing(struct rk628_hdmi *hdmi,
struct drm_display_mode *mode)
{
int value;
/* Set detail external video timing polarity and interlace mode */
value = EXTERANL_VIDEO(1);
value |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
HSYNC_POLARITY(1) : HSYNC_POLARITY(0);
value |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
VSYNC_POLARITY(1) : VSYNC_POLARITY(0);
value |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
INETLACE(1) : INETLACE(0);
hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value);
/* Set detail external video timing */
value = mode->htotal;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF);
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF);
value = mode->htotal - mode->hdisplay;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF);
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF);
value = mode->htotal - mode->hsync_start;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF);
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF);
value = mode->hsync_end - mode->hsync_start;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF);
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF);
value = mode->vtotal;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value & 0xFF);
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_H, (value >> 8) & 0xFF);
value = mode->vtotal - mode->vdisplay;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VBLANK, value & 0xFF);
value = mode->vtotal - mode->vsync_start;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDELAY, value & 0xFF);
value = mode->vsync_end - mode->vsync_start;
hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDURATION, value & 0xFF);
hdmi_writeb(hdmi, HDMI_PHY_PRE_DIV_RATIO, 0x1e);
hdmi_writeb(hdmi, PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c);
hdmi_writeb(hdmi, PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01);
return 0;
}
static int rk628_hdmi_setup(struct rk628_hdmi *hdmi,
struct drm_display_mode *mode)
{
hdmi->hdmi_data.vic = drm_match_cea_mode(mode);
hdmi->hdmi_data.enc_in_format = HDMI_COLORSPACE_RGB;
hdmi->hdmi_data.enc_out_format = HDMI_COLORSPACE_RGB;
if ((hdmi->hdmi_data.vic == 6) || (hdmi->hdmi_data.vic == 7) ||
(hdmi->hdmi_data.vic == 21) || (hdmi->hdmi_data.vic == 22) ||
(hdmi->hdmi_data.vic == 2) || (hdmi->hdmi_data.vic == 3) ||
(hdmi->hdmi_data.vic == 17) || (hdmi->hdmi_data.vic == 18))
hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601;
else
hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709;
/* Mute video and audio output */
hdmi_modb(hdmi, HDMI_AV_MUTE, AUDIO_MUTE_MASK | VIDEO_BLACK_MASK,
AUDIO_MUTE(1) | VIDEO_MUTE(1));
/* Set HDMI Mode */
hdmi_writeb(hdmi, HDMI_HDCP_CTRL,
HDMI_DVI(hdmi->hdmi_data.sink_is_hdmi));
rk628_hdmi_config_video_timing(hdmi, mode);
rk628_hdmi_config_video_csc(hdmi);
if (hdmi->hdmi_data.sink_is_hdmi) {
rk628_hdmi_config_video_avi(hdmi, mode);
rk628_hdmi_config_video_vsi(hdmi, mode);
}
/*
* When IP controller have configured to an accurate video
* timing, then the TMDS clock source would be switched to
* DCLK_LCDC, so we need to init the TMDS rate to mode pixel
* clock rate, and reconfigure the DDC clock.
*/
hdmi->tmds_rate = mode->clock * 1000;
rk628_hdmi_i2c_init(hdmi);
/* Unmute video and audio output */
hdmi_modb(hdmi, HDMI_AV_MUTE, VIDEO_BLACK_MASK, VIDEO_MUTE(0));
if (hdmi->audio_enable)
hdmi_modb(hdmi, HDMI_AV_MUTE, AUDIO_MUTE_MASK, AUDIO_MUTE(0));
return 0;
}
static enum drm_connector_status
rk628_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
struct rk628_hdmi *hdmi = connector_to_hdmi(connector);
int status;
status = hdmi_readb(hdmi, HDMI_STATUS) & HOTPLUG_STATUS;
if (status)
extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, true);
else
extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, false);
return status ? connector_status_connected :
connector_status_disconnected;
}
static bool source_is_bt1120(struct device_node *np)
{
struct device_node *first_remote, *second_remote;
bool ret = false;
first_remote = of_graph_get_remote_node(np, 0, -1);
if (!first_remote)
return ret;
if (!of_device_is_available(first_remote)) {
of_node_put(first_remote);
return ret;
}
second_remote = of_graph_get_remote_node(first_remote, 0, -1);
if (!second_remote) {
of_node_put(first_remote);
return ret;
}
of_node_put(first_remote);
if (!of_device_is_available(second_remote)) {
of_node_put(second_remote);
return ret;
}
if (strstr(of_node_full_name(second_remote), "bt1120-rx"))
ret = true;
of_node_put(second_remote);
return ret;
}
static int rk628_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct rk628_hdmi *hdmi = connector_to_hdmi(connector);
struct drm_display_info *info = &connector->display_info;
struct edid *edid = NULL;
int ret = 0;
if (!hdmi->ddc)
return 0;
clk_prepare_enable(hdmi->dclk);
if ((hdmi_readb(hdmi, HDMI_STATUS) & HOTPLUG_STATUS))
edid = drm_get_edid(connector, hdmi->ddc);
clk_disable_unprepare(hdmi->dclk);
if (edid) {
hdmi->hdmi_data.sink_is_hdmi = drm_detect_hdmi_monitor(edid);
hdmi->hdmi_data.sink_has_audio = drm_detect_monitor_audio(edid);
drm_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
} else {
hdmi->hdmi_data.sink_is_hdmi = true;
hdmi->hdmi_data.sink_has_audio = true;
ret = rockchip_drm_add_modes_noedid(connector);
info->edid_hdmi_dc_modes = 0;
info->hdmi.y420_dc_modes = 0;
info->color_formats = 0;
dev_info(hdmi->dev, "failed to get edid\n");
}
if (source_is_bt1120(hdmi->dev->of_node)) {
u32 bus_format = MEDIA_BUS_FMT_VYUY8_1X16;
drm_display_info_set_bus_formats(&connector->display_info,
&bus_format, 1);
}
return ret;
}
static enum drm_mode_status
rk628_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
if ((mode->hdisplay == 1920 && mode->vdisplay == 1080) ||
(mode->hdisplay == 1280 && mode->vdisplay == 720))
return MODE_OK;
else
return MODE_BAD;
}
static struct drm_encoder *
rk628_hdmi_connector_best_encoder(struct drm_connector *connector)
{
struct rk628_hdmi *hdmi = connector_to_hdmi(connector);
return hdmi->bridge.encoder;
}
static int
rk628_hdmi_probe_single_connector_modes(struct drm_connector *connector,
u32 maxX, u32 maxY)
{
return drm_helper_probe_single_connector_modes(connector, 1920, 1080);
}
static const struct drm_connector_funcs rk628_hdmi_connector_funcs = {
.fill_modes = rk628_hdmi_probe_single_connector_modes,
.detect = rk628_hdmi_connector_detect,
.destroy = drm_connector_cleanup,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static const struct drm_connector_helper_funcs
rk628_hdmi_connector_helper_funcs = {
.get_modes = rk628_hdmi_connector_get_modes,
.mode_valid = rk628_hdmi_connector_mode_valid,
.best_encoder = rk628_hdmi_connector_best_encoder,
};
static void rk628_hdmi_bridge_mode_set(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
const struct drm_display_mode *adj_mode)
{
struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge);
/* Store the display mode for plugin/DPMS poweron events */
memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode));
}
static void rk628_hdmi_bridge_enable(struct drm_bridge *bridge)
{
struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge);
rk628_hdmi_setup(hdmi, &hdmi->previous_mode);
rk628_hdmi_set_pwr_mode(hdmi, NORMAL);
}
static void rk628_hdmi_bridge_disable(struct drm_bridge *bridge)
{
struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge);
rk628_hdmi_set_pwr_mode(hdmi, LOWER_PWR);
}
static int rk628_hdmi_bridge_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)
{
struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge);
struct drm_connector *connector = &hdmi->connector;
struct drm_device *drm = bridge->dev;
int ret;
if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
return 0;
connector->polled = DRM_CONNECTOR_POLL_HPD;
ret = drm_connector_init(drm, connector, &rk628_hdmi_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
if (ret) {
dev_err(hdmi->dev, "Failed to initialize connector with drm\n");
return ret;
}
drm_connector_helper_add(connector,
&rk628_hdmi_connector_helper_funcs);
drm_connector_attach_encoder(connector, bridge->encoder);
hdmi->sub_dev.connector = &hdmi->connector;
hdmi->sub_dev.of_node = hdmi->dev->of_node;
rockchip_drm_register_sub_dev(&hdmi->sub_dev);
return 0;
}
static void rk628_hdmi_bridge_detach(struct drm_bridge *bridge)
{
struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge);
rockchip_drm_unregister_sub_dev(&hdmi->sub_dev);
}
static const struct drm_bridge_funcs rk628_hdmi_bridge_funcs = {
.attach = rk628_hdmi_bridge_attach,
.detach = rk628_hdmi_bridge_detach,
.mode_set = rk628_hdmi_bridge_mode_set,
.enable = rk628_hdmi_bridge_enable,
.disable = rk628_hdmi_bridge_disable,
};
static int
rk628_hdmi_audio_config_set(struct rk628_hdmi *hdmi, struct audio_info *audio)
{
int rate, N, channel;
if (audio->channels < 3)
channel = I2S_CHANNEL_1_2;
else if (audio->channels < 5)
channel = I2S_CHANNEL_3_4;
else if (audio->channels < 7)
channel = I2S_CHANNEL_5_6;
else
channel = I2S_CHANNEL_7_8;
switch (audio->sample_rate) {
case 32000:
rate = AUDIO_32K;
N = N_32K;
break;
case 44100:
rate = AUDIO_441K;
N = N_441K;
break;
case 48000:
rate = AUDIO_48K;
N = N_48K;
break;
case 88200:
rate = AUDIO_882K;
N = N_882K;
break;
case 96000:
rate = AUDIO_96K;
N = N_96K;
break;
case 176400:
rate = AUDIO_1764K;
N = N_1764K;
break;
case 192000:
rate = AUDIO_192K;
N = N_192K;
break;
default:
dev_err(hdmi->dev, "[%s] not support such sample rate %d\n",
__func__, audio->sample_rate);
return -ENOENT;
}
/* set_audio source I2S */
hdmi_writeb(hdmi, HDMI_AUDIO_CTRL1, 0x01);
hdmi_writeb(hdmi, AUDIO_SAMPLE_RATE, rate);
hdmi_writeb(hdmi, AUDIO_I2S_MODE,
I2S_MODE(I2S_STANDARD) | I2S_CHANNEL(channel));
hdmi_writeb(hdmi, AUDIO_I2S_MAP, 0x00);
hdmi_writeb(hdmi, AUDIO_I2S_SWAPS_SPDIF, 0);
/* Set N value */
hdmi_writeb(hdmi, AUDIO_N_H, (N >> 16) & 0x0F);
hdmi_writeb(hdmi, AUDIO_N_M, (N >> 8) & 0xFF);
hdmi_writeb(hdmi, AUDIO_N_L, N & 0xFF);
/*Set hdmi nlpcm mode to support hdmi bitstream*/
hdmi_writeb(hdmi, HDMI_AUDIO_CHANNEL_STATUS, AUDIO_STATUS_NLPCM(0));
return rk628_hdmi_config_audio_aai(hdmi, audio);
}
static int rk628_hdmi_audio_hw_params(struct device *dev, void *d,
struct hdmi_codec_daifmt *daifmt,
struct hdmi_codec_params *params)
{
struct rk628_hdmi *hdmi = dev_get_drvdata(dev);
struct audio_info audio = {
.sample_width = params->sample_width,
.sample_rate = params->sample_rate,
.channels = params->channels,
};
if (!hdmi->hdmi_data.sink_has_audio) {
dev_err(hdmi->dev, "Sink do not support audio!\n");
return -ENODEV;
}
if (!hdmi->bridge.encoder->crtc)
return -ENODEV;
switch (daifmt->fmt) {
case HDMI_I2S:
break;
default:
dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
return -EINVAL;
}
return rk628_hdmi_audio_config_set(hdmi, &audio);
}
static void rk628_hdmi_audio_shutdown(struct device *dev, void *d)
{
/* do nothing */
}
static int rk628_hdmi_audio_mute(struct device *dev, void *d, bool mute,
int direction)
{
struct rk628_hdmi *hdmi = dev_get_drvdata(dev);
if (!hdmi->hdmi_data.sink_has_audio) {
dev_err(hdmi->dev, "Sink do not support audio!\n");
return -ENODEV;
}
hdmi->audio_enable = !mute;
if (mute)
hdmi_modb(hdmi, HDMI_AV_MUTE, AUDIO_MUTE_MASK | AUDIO_PD_MASK,
AUDIO_MUTE(1) | AUDIO_PD(1));
else
hdmi_modb(hdmi, HDMI_AV_MUTE, AUDIO_MUTE_MASK | AUDIO_PD_MASK,
AUDIO_MUTE(0) | AUDIO_PD(0));
return 0;
}
static int rk628_hdmi_audio_get_eld(struct device *dev, void *d,
u8 *buf, size_t len)
{
struct rk628_hdmi *hdmi = dev_get_drvdata(dev);
struct drm_mode_config *config = &hdmi->bridge.dev->mode_config;
struct drm_connector *connector;
int ret = -ENODEV;
mutex_lock(&config->mutex);
list_for_each_entry(connector, &config->connector_list, head) {
if (hdmi->bridge.encoder == connector->encoder) {
memcpy(buf, connector->eld,
min(sizeof(connector->eld), len));
ret = 0;
}
}
mutex_unlock(&config->mutex);
return ret;
}
static const struct hdmi_codec_ops audio_codec_ops = {
.hw_params = rk628_hdmi_audio_hw_params,
.audio_shutdown = rk628_hdmi_audio_shutdown,
.mute_stream = rk628_hdmi_audio_mute,
.get_eld = rk628_hdmi_audio_get_eld,
.no_capture_mute = 1,
};
static int rk628_hdmi_audio_codec_init(struct rk628_hdmi *hdmi,
struct device *dev)
{
struct hdmi_codec_pdata codec_data = {
.i2s = 1,
.ops = &audio_codec_ops,
.max_i2s_channels = 8,
};
hdmi->audio_enable = false;
hdmi->audio_pdev = platform_device_register_data(dev,
HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_NONE,
&codec_data, sizeof(codec_data));
return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
}
static irqreturn_t rk628_hdmi_irq(int irq, void *dev_id)
{
struct rk628_hdmi *hdmi = dev_id;
u8 interrupt;
interrupt = hdmi_readb(hdmi, HDMI_STATUS);
if (!(interrupt & INT_HOTPLUG))
return IRQ_HANDLED;
hdmi_modb(hdmi, HDMI_STATUS, INT_HOTPLUG, INT_HOTPLUG);
if (hdmi->connector.dev)
drm_helper_hpd_irq_event(hdmi->connector.dev);
return IRQ_HANDLED;
}
static int rk628_hdmi_i2c_read(struct rk628_hdmi *hdmi, struct i2c_msg *msgs)
{
int length = msgs->len;
u8 *buf = msgs->buf;
int i;
u32 c;
for (i = 0; i < 5; i++) {
msleep(20);
c = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1);
if (c & INT_EDID_READY)
break;
}
if ((c & INT_EDID_READY) == 0)
return -EAGAIN;
while (length--)
*buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR);
return 0;
}
static int rk628_hdmi_i2c_write(struct rk628_hdmi *hdmi, struct i2c_msg *msgs)
{
/*
* The DDC module only support read EDID message, so
* we assume that each word write to this i2c adapter
* should be the offset of EDID word address.
*/
if ((msgs->len != 1) ||
((msgs->addr != DDC_ADDR) && (msgs->addr != DDC_SEGMENT_ADDR)))
return -EINVAL;
if (msgs->addr == DDC_ADDR)
hdmi->i2c->ddc_addr = msgs->buf[0];
if (msgs->addr == DDC_SEGMENT_ADDR) {
hdmi->i2c->segment_addr = msgs->buf[0];
return 0;
}
/* Set edid fifo first addr */
hdmi_writeb(hdmi, HDMI_EDID_FIFO_OFFSET, 0x00);
/* Set edid word address 0x00/0x80 */
hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr);
/* Set edid segment pointer */
hdmi_writeb(hdmi, HDMI_EDID_SEGMENT_POINTER, hdmi->i2c->segment_addr);
return 0;
}
static int rk628_hdmi_i2c_xfer(struct i2c_adapter *adap,
struct i2c_msg *msgs, int num)
{
struct rk628_hdmi *hdmi = i2c_get_adapdata(adap);
struct rk628_hdmi_i2c *i2c = hdmi->i2c;
int i, ret = 0;
mutex_lock(&i2c->lock);
hdmi->i2c->ddc_addr = 0;
hdmi->i2c->segment_addr = 0;
/* Clear the EDID interrupt flag and unmute the interrupt */
hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, INT_EDID_READY);
hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, INT_EDID_READY_MASK);
for (i = 0; i < num; i++) {
dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n",
i + 1, num, msgs[i].len, msgs[i].flags);
if (msgs[i].flags & I2C_M_RD)
ret = rk628_hdmi_i2c_read(hdmi, &msgs[i]);
else
ret = rk628_hdmi_i2c_write(hdmi, &msgs[i]);
if (ret < 0)
break;
}
if (!ret)
ret = num;
/* Mute HDMI EDID interrupt */
hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, INT_EDID_READY);
mutex_unlock(&i2c->lock);
return ret;
}
static u32 rk628_hdmi_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm rk628_hdmi_algorithm = {
.master_xfer = rk628_hdmi_i2c_xfer,
.functionality = rk628_hdmi_i2c_func,
};
static struct i2c_adapter *rk628_hdmi_i2c_adapter(struct rk628_hdmi *hdmi)
{
struct i2c_adapter *adap;
struct rk628_hdmi_i2c *i2c;
int ret;
i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
if (!i2c)
return ERR_PTR(-ENOMEM);
mutex_init(&i2c->lock);
adap = &i2c->adap;
adap->class = I2C_CLASS_DDC;
adap->owner = THIS_MODULE;
adap->dev.parent = hdmi->dev;
adap->dev.of_node = hdmi->dev->of_node;
adap->algo = &rk628_hdmi_algorithm;
strlcpy(adap->name, "RK628 HDMI", sizeof(adap->name));
i2c_set_adapdata(adap, hdmi);
ret = i2c_add_adapter(adap);
if (ret) {
dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
devm_kfree(hdmi->dev, i2c);
return ERR_PTR(ret);
}
hdmi->i2c = i2c;
dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name);
return adap;
}
static const struct regmap_range rk628_hdmi_volatile_reg_ranges[] = {
regmap_reg_range(HDMI_BASE, HDMI_MAX_REG),
};
static const struct regmap_access_table rk628_hdmi_volatile_regs = {
.yes_ranges = rk628_hdmi_volatile_reg_ranges,
.n_yes_ranges = ARRAY_SIZE(rk628_hdmi_volatile_reg_ranges),
};
static bool rk628_is_read_enable_reg(struct device *dev, unsigned int reg)
{
if (reg >= HDMI_BASE && reg <= HDMI_MAX_REG)
return true;
return false;
}
static bool rk628_hdmi_register_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case HDMI_REG(HDMI_EDID_FIFO_ADDR):
case HDMI_REG(HDMI_INTERRUPT_STATUS1):
case HDMI_REG(HDMI_INTERRUPT_STATUS2):
case HDMI_REG(HDMI_STATUS):
case HDMI_REG(HDMI_CEC_TX_INT):
case HDMI_REG(HDMI_CEC_RX_INT):
return true;
default:
return false;
}
}
static const struct regmap_config rk628_hdmi_regmap_config = {
.name = "hdmi",
.reg_bits = 32,
.val_bits = 32,
.reg_stride = HDMI_REG_STRIDE,
.max_register = HDMI_MAX_REG,
.cache_type = REGCACHE_RBTREE,
.reg_format_endian = REGMAP_ENDIAN_LITTLE,
.val_format_endian = REGMAP_ENDIAN_LITTLE,
.readable_reg = rk628_is_read_enable_reg,
.writeable_reg = rk628_is_read_enable_reg,
.volatile_reg = rk628_hdmi_register_volatile,
.rd_table = &rk628_hdmi_volatile_regs,
};
static int rk628_hdmi_probe(struct platform_device *pdev)
{
struct rk628 *rk628 = dev_get_drvdata(pdev->dev.parent);
struct device *dev = &pdev->dev;
struct rk628_hdmi *hdmi;
int irq;
int ret;
if (!of_device_is_available(dev->of_node))
return -ENODEV;
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
hdmi->grf = rk628->grf;
if (!hdmi->grf)
return -ENODEV;
hdmi->dev = dev;
hdmi->parent = rk628;
platform_set_drvdata(pdev, hdmi);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
hdmi->regmap = devm_regmap_init_i2c(rk628->client,
&rk628_hdmi_regmap_config);
if (IS_ERR(hdmi->regmap)) {
ret = PTR_ERR(hdmi->regmap);
dev_err(dev, "failed to allocate register map: %d\n", ret);
return PTR_ERR(hdmi->regmap);
}
hdmi->dclk = devm_clk_get(dev, "dclk");
if (IS_ERR(hdmi->dclk)) {
dev_err(dev, "Unable to get dclk %ld\n",
PTR_ERR(hdmi->dclk));
return PTR_ERR(hdmi->dclk);
}
hdmi->pclk = devm_clk_get(dev, "pclk");
if (IS_ERR(hdmi->pclk)) {
dev_err(dev, "Unable to get pclk %ld\n",
PTR_ERR(hdmi->pclk));
return PTR_ERR(hdmi->pclk);
}
clk_prepare_enable(hdmi->pclk);
/* hdmitx vclk pllref select Pin_vclk */
regmap_update_bits(hdmi->grf, GRF_POST_PROC_CON,
SW_HDMITX_VCLK_PLLREF_SEL_MASK,
SW_HDMITX_VCLK_PLLREF_SEL(1));
/* set output mode to HDMI */
regmap_update_bits(hdmi->grf, GRF_SYSTEM_CON0, SW_OUTPUT_MODE_MASK,
SW_OUTPUT_MODE(OUTPUT_MODE_HDMI));
rk628_hdmi_reset(hdmi);
hdmi->ddc = rk628_hdmi_i2c_adapter(hdmi);
if (IS_ERR(hdmi->ddc)) {
ret = PTR_ERR(hdmi->ddc);
hdmi->ddc = NULL;
goto fail;
}
/*
* When IP controller haven't configured to an accurate video
* timing, then the TMDS clock source would be switched to
* PCLK_HDMI, so we need to init the TMDS rate to PCLK rate,
* and reconfigure the DDC clock.
*/
hdmi->tmds_rate = clk_get_rate(hdmi->pclk);
rk628_hdmi_i2c_init(hdmi);
rk628_hdmi_audio_codec_init(hdmi, dev);
ret = devm_request_threaded_irq(dev, irq, NULL,
rk628_hdmi_irq,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
dev_name(dev), hdmi);
if (ret) {
dev_err(dev, "failed to request hdmi irq: %d\n", ret);
goto fail;
}
/* Unmute hotplug interrupt */
hdmi_modb(hdmi, HDMI_STATUS, MASK_INT_HOTPLUG_MASK,
MASK_INT_HOTPLUG(1));
hdmi->bridge.funcs = &rk628_hdmi_bridge_funcs;
hdmi->bridge.of_node = dev->of_node;
drm_bridge_add(&hdmi->bridge);
hdmi->extcon = devm_extcon_dev_allocate(hdmi->dev, rk628_hdmi_cable);
if (IS_ERR(hdmi->extcon)) {
dev_err(hdmi->dev, "allocate extcon failed\n");
ret = PTR_ERR(hdmi->extcon);
goto fail;
}
ret = devm_extcon_dev_register(hdmi->dev, hdmi->extcon);
if (ret) {
dev_err(dev, "failed to register extcon: %d\n", ret);
goto fail;
}
ret = extcon_set_property_capability(hdmi->extcon, EXTCON_DISP_HDMI,
EXTCON_PROP_DISP_HPD);
if (ret) {
dev_err(dev, "failed to set USB property capability: %d\n",
ret);
goto fail;
}
return 0;
fail:
clk_disable_unprepare(hdmi->pclk);
return ret;
}
static int rk628_hdmi_remove(struct platform_device *pdev)
{
struct rk628_hdmi *hdmi = platform_get_drvdata(pdev);
drm_bridge_remove(&hdmi->bridge);
i2c_put_adapter(hdmi->ddc);
clk_disable_unprepare(hdmi->pclk);
return 0;
}
static const struct of_device_id rk628_hdmi_dt_ids[] = {
{ .compatible = "rockchip,rk628-hdmi", },
{},
};
MODULE_DEVICE_TABLE(of, rk628_hdmi_dt_ids);
static struct platform_driver rk628_hdmi_driver = {
.probe = rk628_hdmi_probe,
.remove = rk628_hdmi_remove,
.driver = {
.name = "rk628-hdmi",
.of_match_table = rk628_hdmi_dt_ids,
},
};
module_platform_driver(rk628_hdmi_driver);
MODULE_AUTHOR("Chen Shunqing <csq@rock-chips.com>");
MODULE_DESCRIPTION("Rockchip RK628 HDMI driver");
MODULE_LICENSE("GPL v2");
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