936 строки
24 KiB
C
936 строки
24 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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* Zheng Yang <zhengyang@rock-chips.com>
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* Yakir Yang <ykk@rock-chips.com>
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*/
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#include <linux/irq.h>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/hdmi.h>
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#include <linux/mfd/syscon.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/of_device.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_of.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/drm_simple_kms_helper.h>
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#include "rockchip_drm_drv.h"
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#include "rockchip_drm_vop.h"
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#include "inno_hdmi.h"
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#define to_inno_hdmi(x) container_of(x, struct inno_hdmi, x)
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struct hdmi_data_info {
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int vic;
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bool sink_is_hdmi;
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bool sink_has_audio;
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unsigned int enc_in_format;
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unsigned int enc_out_format;
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unsigned int colorimetry;
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};
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struct inno_hdmi_i2c {
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struct i2c_adapter adap;
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u8 ddc_addr;
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u8 segment_addr;
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struct mutex lock;
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struct completion cmp;
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};
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struct inno_hdmi {
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struct device *dev;
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struct drm_device *drm_dev;
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int irq;
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struct clk *pclk;
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void __iomem *regs;
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struct drm_connector connector;
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struct drm_encoder encoder;
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struct inno_hdmi_i2c *i2c;
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struct i2c_adapter *ddc;
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unsigned int tmds_rate;
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struct hdmi_data_info hdmi_data;
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struct drm_display_mode previous_mode;
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};
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enum {
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CSC_ITU601_16_235_TO_RGB_0_255_8BIT,
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CSC_ITU601_0_255_TO_RGB_0_255_8BIT,
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CSC_ITU709_16_235_TO_RGB_0_255_8BIT,
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CSC_RGB_0_255_TO_ITU601_16_235_8BIT,
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CSC_RGB_0_255_TO_ITU709_16_235_8BIT,
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CSC_RGB_0_255_TO_RGB_16_235_8BIT,
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};
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static const char coeff_csc[][24] = {
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/*
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* YUV2RGB:601 SD mode(Y[16:235], UV[16:240], RGB[0:255]):
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* R = 1.164*Y + 1.596*V - 204
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* G = 1.164*Y - 0.391*U - 0.813*V + 154
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* B = 1.164*Y + 2.018*U - 258
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*/
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{
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0x04, 0xa7, 0x00, 0x00, 0x06, 0x62, 0x02, 0xcc,
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0x04, 0xa7, 0x11, 0x90, 0x13, 0x40, 0x00, 0x9a,
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0x04, 0xa7, 0x08, 0x12, 0x00, 0x00, 0x03, 0x02
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},
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/*
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* YUV2RGB:601 SD mode(YUV[0:255],RGB[0:255]):
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* R = Y + 1.402*V - 248
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* G = Y - 0.344*U - 0.714*V + 135
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* B = Y + 1.772*U - 227
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*/
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{
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0x04, 0x00, 0x00, 0x00, 0x05, 0x9b, 0x02, 0xf8,
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0x04, 0x00, 0x11, 0x60, 0x12, 0xdb, 0x00, 0x87,
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0x04, 0x00, 0x07, 0x16, 0x00, 0x00, 0x02, 0xe3
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},
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/*
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* YUV2RGB:709 HD mode(Y[16:235],UV[16:240],RGB[0:255]):
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* R = 1.164*Y + 1.793*V - 248
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* G = 1.164*Y - 0.213*U - 0.534*V + 77
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* B = 1.164*Y + 2.115*U - 289
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*/
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{
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0x04, 0xa7, 0x00, 0x00, 0x07, 0x2c, 0x02, 0xf8,
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0x04, 0xa7, 0x10, 0xda, 0x12, 0x22, 0x00, 0x4d,
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0x04, 0xa7, 0x08, 0x74, 0x00, 0x00, 0x03, 0x21
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},
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/*
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* RGB2YUV:601 SD mode:
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* Cb = -0.291G - 0.148R + 0.439B + 128
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* Y = 0.504G + 0.257R + 0.098B + 16
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* Cr = -0.368G + 0.439R - 0.071B + 128
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*/
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{
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0x11, 0x5f, 0x01, 0x82, 0x10, 0x23, 0x00, 0x80,
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0x02, 0x1c, 0x00, 0xa1, 0x00, 0x36, 0x00, 0x1e,
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0x11, 0x29, 0x10, 0x59, 0x01, 0x82, 0x00, 0x80
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},
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/*
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* RGB2YUV:709 HD mode:
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* Cb = - 0.338G - 0.101R + 0.439B + 128
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* Y = 0.614G + 0.183R + 0.062B + 16
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* Cr = - 0.399G + 0.439R - 0.040B + 128
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*/
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{
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0x11, 0x98, 0x01, 0xc1, 0x10, 0x28, 0x00, 0x80,
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0x02, 0x74, 0x00, 0xbb, 0x00, 0x3f, 0x00, 0x10,
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0x11, 0x5a, 0x10, 0x67, 0x01, 0xc1, 0x00, 0x80
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},
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/*
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* RGB[0:255]2RGB[16:235]:
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* R' = R x (235-16)/255 + 16;
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* G' = G x (235-16)/255 + 16;
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* B' = B x (235-16)/255 + 16;
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*/
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{
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0x00, 0x00, 0x03, 0x6F, 0x00, 0x00, 0x00, 0x10,
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0x03, 0x6F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
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0x00, 0x00, 0x00, 0x00, 0x03, 0x6F, 0x00, 0x10
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},
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};
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static inline u8 hdmi_readb(struct inno_hdmi *hdmi, u16 offset)
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{
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return readl_relaxed(hdmi->regs + (offset) * 0x04);
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}
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static inline void hdmi_writeb(struct inno_hdmi *hdmi, u16 offset, u32 val)
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{
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writel_relaxed(val, hdmi->regs + (offset) * 0x04);
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}
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static inline void hdmi_modb(struct inno_hdmi *hdmi, u16 offset,
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u32 msk, u32 val)
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{
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u8 temp = hdmi_readb(hdmi, offset) & ~msk;
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temp |= val & msk;
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hdmi_writeb(hdmi, offset, temp);
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}
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static void inno_hdmi_i2c_init(struct inno_hdmi *hdmi)
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{
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int ddc_bus_freq;
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ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE;
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hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF);
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hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF);
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/* Clear the EDID interrupt flag and mute the interrupt */
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hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
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hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
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}
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static void inno_hdmi_sys_power(struct inno_hdmi *hdmi, bool enable)
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{
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if (enable)
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hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON);
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else
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hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF);
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}
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static void inno_hdmi_set_pwr_mode(struct inno_hdmi *hdmi, int mode)
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{
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switch (mode) {
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case NORMAL:
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inno_hdmi_sys_power(hdmi, false);
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hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x6f);
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hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0xbb);
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hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
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hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14);
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hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10);
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hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f);
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hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00);
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hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01);
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inno_hdmi_sys_power(hdmi, true);
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break;
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case LOWER_PWR:
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inno_hdmi_sys_power(hdmi, false);
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hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00);
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hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00);
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hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00);
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hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
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break;
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default:
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DRM_DEV_ERROR(hdmi->dev, "Unknown power mode %d\n", mode);
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}
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}
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static void inno_hdmi_reset(struct inno_hdmi *hdmi)
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{
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u32 val;
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u32 msk;
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hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_DIGITAL, v_NOT_RST_DIGITAL);
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udelay(100);
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hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_ANALOG, v_NOT_RST_ANALOG);
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udelay(100);
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msk = m_REG_CLK_INV | m_REG_CLK_SOURCE | m_POWER | m_INT_POL;
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val = v_REG_CLK_INV | v_REG_CLK_SOURCE_SYS | v_PWR_ON | v_INT_POL_HIGH;
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hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val);
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inno_hdmi_set_pwr_mode(hdmi, NORMAL);
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}
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static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi, int setup_rc,
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union hdmi_infoframe *frame, u32 frame_index,
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u32 mask, u32 disable, u32 enable)
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{
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if (mask)
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hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable);
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hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index);
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if (setup_rc >= 0) {
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u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
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ssize_t rc, i;
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rc = hdmi_infoframe_pack(frame, packed_frame,
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sizeof(packed_frame));
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if (rc < 0)
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return rc;
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for (i = 0; i < rc; i++)
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hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i,
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packed_frame[i]);
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if (mask)
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hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, enable);
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}
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return setup_rc;
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}
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static int inno_hdmi_config_video_vsi(struct inno_hdmi *hdmi,
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struct drm_display_mode *mode)
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{
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union hdmi_infoframe frame;
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int rc;
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rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
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&hdmi->connector,
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mode);
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return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_VSI,
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m_PACKET_VSI_EN, v_PACKET_VSI_EN(0), v_PACKET_VSI_EN(1));
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}
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static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
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struct drm_display_mode *mode)
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{
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union hdmi_infoframe frame;
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int rc;
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rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
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&hdmi->connector,
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mode);
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if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444)
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frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
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else if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV422)
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frame.avi.colorspace = HDMI_COLORSPACE_YUV422;
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else
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frame.avi.colorspace = HDMI_COLORSPACE_RGB;
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return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0);
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}
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static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
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{
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struct hdmi_data_info *data = &hdmi->hdmi_data;
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int c0_c2_change = 0;
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int csc_enable = 0;
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int csc_mode = 0;
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int auto_csc = 0;
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int value;
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int i;
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/* Input video mode is SDR RGB24bit, data enable signal from external */
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hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL1, v_DE_EXTERNAL |
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v_VIDEO_INPUT_FORMAT(VIDEO_INPUT_SDR_RGB444));
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/* Input color hardcode to RGB, and output color hardcode to RGB888 */
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value = v_VIDEO_INPUT_BITS(VIDEO_INPUT_8BITS) |
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v_VIDEO_OUTPUT_COLOR(0) |
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v_VIDEO_INPUT_CSP(0);
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hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value);
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if (data->enc_in_format == data->enc_out_format) {
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if ((data->enc_in_format == HDMI_COLORSPACE_RGB) ||
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(data->enc_in_format >= HDMI_COLORSPACE_YUV444)) {
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value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1);
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hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
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hdmi_modb(hdmi, HDMI_VIDEO_CONTRL,
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m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP,
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v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
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v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
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return 0;
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}
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}
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if (data->colorimetry == HDMI_COLORIMETRY_ITU_601) {
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if ((data->enc_in_format == HDMI_COLORSPACE_RGB) &&
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(data->enc_out_format == HDMI_COLORSPACE_YUV444)) {
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csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
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auto_csc = AUTO_CSC_DISABLE;
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c0_c2_change = C0_C2_CHANGE_DISABLE;
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csc_enable = v_CSC_ENABLE;
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} else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) &&
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(data->enc_out_format == HDMI_COLORSPACE_RGB)) {
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csc_mode = CSC_ITU601_16_235_TO_RGB_0_255_8BIT;
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auto_csc = AUTO_CSC_ENABLE;
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c0_c2_change = C0_C2_CHANGE_DISABLE;
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csc_enable = v_CSC_DISABLE;
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}
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} else {
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if ((data->enc_in_format == HDMI_COLORSPACE_RGB) &&
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(data->enc_out_format == HDMI_COLORSPACE_YUV444)) {
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csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
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auto_csc = AUTO_CSC_DISABLE;
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c0_c2_change = C0_C2_CHANGE_DISABLE;
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csc_enable = v_CSC_ENABLE;
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} else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) &&
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(data->enc_out_format == HDMI_COLORSPACE_RGB)) {
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csc_mode = CSC_ITU709_16_235_TO_RGB_0_255_8BIT;
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auto_csc = AUTO_CSC_ENABLE;
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c0_c2_change = C0_C2_CHANGE_DISABLE;
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csc_enable = v_CSC_DISABLE;
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}
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}
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for (i = 0; i < 24; i++)
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hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i,
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coeff_csc[csc_mode][i]);
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value = v_SOF_DISABLE | csc_enable | v_COLOR_DEPTH_NOT_INDICATED(1);
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hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
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hdmi_modb(hdmi, HDMI_VIDEO_CONTRL, m_VIDEO_AUTO_CSC |
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m_VIDEO_C0_C2_SWAP, v_VIDEO_AUTO_CSC(auto_csc) |
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v_VIDEO_C0_C2_SWAP(c0_c2_change));
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return 0;
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}
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static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
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struct drm_display_mode *mode)
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{
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int value;
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/* Set detail external video timing polarity and interlace mode */
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value = v_EXTERANL_VIDEO(1);
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value |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
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v_HSYNC_POLARITY(1) : v_HSYNC_POLARITY(0);
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value |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
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v_VSYNC_POLARITY(1) : v_VSYNC_POLARITY(0);
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value |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
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v_INETLACE(1) : v_INETLACE(0);
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hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value);
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/* Set detail external video timing */
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value = mode->htotal;
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF);
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF);
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value = mode->htotal - mode->hdisplay;
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF);
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF);
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value = mode->hsync_start - mode->hdisplay;
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF);
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF);
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value = mode->hsync_end - mode->hsync_start;
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF);
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hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF);
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value = mode->vtotal;
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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->vsync_start - mode->vdisplay;
|
|
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, HDMI_PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c);
|
|
hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inno_hdmi_setup(struct inno_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, m_AUDIO_MUTE | m_VIDEO_BLACK,
|
|
v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1));
|
|
|
|
/* Set HDMI Mode */
|
|
hdmi_writeb(hdmi, HDMI_HDCP_CTRL,
|
|
v_HDMI_DVI(hdmi->hdmi_data.sink_is_hdmi));
|
|
|
|
inno_hdmi_config_video_timing(hdmi, mode);
|
|
|
|
inno_hdmi_config_video_csc(hdmi);
|
|
|
|
if (hdmi->hdmi_data.sink_is_hdmi) {
|
|
inno_hdmi_config_video_avi(hdmi, mode);
|
|
inno_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;
|
|
inno_hdmi_i2c_init(hdmi);
|
|
|
|
/* Unmute video and audio output */
|
|
hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
|
|
v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void inno_hdmi_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adj_mode)
|
|
{
|
|
struct inno_hdmi *hdmi = to_inno_hdmi(encoder);
|
|
|
|
inno_hdmi_setup(hdmi, adj_mode);
|
|
|
|
/* Store the display mode for plugin/DPMS poweron events */
|
|
memcpy(&hdmi->previous_mode, adj_mode, sizeof(hdmi->previous_mode));
|
|
}
|
|
|
|
static void inno_hdmi_encoder_enable(struct drm_encoder *encoder)
|
|
{
|
|
struct inno_hdmi *hdmi = to_inno_hdmi(encoder);
|
|
|
|
inno_hdmi_set_pwr_mode(hdmi, NORMAL);
|
|
}
|
|
|
|
static void inno_hdmi_encoder_disable(struct drm_encoder *encoder)
|
|
{
|
|
struct inno_hdmi *hdmi = to_inno_hdmi(encoder);
|
|
|
|
inno_hdmi_set_pwr_mode(hdmi, LOWER_PWR);
|
|
}
|
|
|
|
static bool inno_hdmi_encoder_mode_fixup(struct drm_encoder *encoder,
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adj_mode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state)
|
|
{
|
|
struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
|
|
|
|
s->output_mode = ROCKCHIP_OUT_MODE_P888;
|
|
s->output_type = DRM_MODE_CONNECTOR_HDMIA;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
|
|
.enable = inno_hdmi_encoder_enable,
|
|
.disable = inno_hdmi_encoder_disable,
|
|
.mode_fixup = inno_hdmi_encoder_mode_fixup,
|
|
.mode_set = inno_hdmi_encoder_mode_set,
|
|
.atomic_check = inno_hdmi_encoder_atomic_check,
|
|
};
|
|
|
|
static enum drm_connector_status
|
|
inno_hdmi_connector_detect(struct drm_connector *connector, bool force)
|
|
{
|
|
struct inno_hdmi *hdmi = to_inno_hdmi(connector);
|
|
|
|
return (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ?
|
|
connector_status_connected : connector_status_disconnected;
|
|
}
|
|
|
|
static int inno_hdmi_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct inno_hdmi *hdmi = to_inno_hdmi(connector);
|
|
struct edid *edid;
|
|
int ret = 0;
|
|
|
|
if (!hdmi->ddc)
|
|
return 0;
|
|
|
|
edid = drm_get_edid(connector, hdmi->ddc);
|
|
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);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum drm_mode_status
|
|
inno_hdmi_connector_mode_valid(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return MODE_OK;
|
|
}
|
|
|
|
static int
|
|
inno_hdmi_probe_single_connector_modes(struct drm_connector *connector,
|
|
uint32_t maxX, uint32_t maxY)
|
|
{
|
|
return drm_helper_probe_single_connector_modes(connector, 1920, 1080);
|
|
}
|
|
|
|
static void inno_hdmi_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
drm_connector_unregister(connector);
|
|
drm_connector_cleanup(connector);
|
|
}
|
|
|
|
static const struct drm_connector_funcs inno_hdmi_connector_funcs = {
|
|
.fill_modes = inno_hdmi_probe_single_connector_modes,
|
|
.detect = inno_hdmi_connector_detect,
|
|
.destroy = inno_hdmi_connector_destroy,
|
|
.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 struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = {
|
|
.get_modes = inno_hdmi_connector_get_modes,
|
|
.mode_valid = inno_hdmi_connector_mode_valid,
|
|
};
|
|
|
|
static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
|
|
{
|
|
struct drm_encoder *encoder = &hdmi->encoder;
|
|
struct device *dev = hdmi->dev;
|
|
|
|
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
|
|
|
|
/*
|
|
* If we failed to find the CRTC(s) which this encoder is
|
|
* supposed to be connected to, it's because the CRTC has
|
|
* not been registered yet. Defer probing, and hope that
|
|
* the required CRTC is added later.
|
|
*/
|
|
if (encoder->possible_crtcs == 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
drm_encoder_helper_add(encoder, &inno_hdmi_encoder_helper_funcs);
|
|
drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
|
|
|
|
hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
|
|
|
|
drm_connector_helper_add(&hdmi->connector,
|
|
&inno_hdmi_connector_helper_funcs);
|
|
drm_connector_init_with_ddc(drm, &hdmi->connector,
|
|
&inno_hdmi_connector_funcs,
|
|
DRM_MODE_CONNECTOR_HDMIA,
|
|
hdmi->ddc);
|
|
|
|
drm_connector_attach_encoder(&hdmi->connector, encoder);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t inno_hdmi_i2c_irq(struct inno_hdmi *hdmi)
|
|
{
|
|
struct inno_hdmi_i2c *i2c = hdmi->i2c;
|
|
u8 stat;
|
|
|
|
stat = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1);
|
|
if (!(stat & m_INT_EDID_READY))
|
|
return IRQ_NONE;
|
|
|
|
/* Clear HDMI EDID interrupt flag */
|
|
hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
|
|
|
|
complete(&i2c->cmp);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t inno_hdmi_hardirq(int irq, void *dev_id)
|
|
{
|
|
struct inno_hdmi *hdmi = dev_id;
|
|
irqreturn_t ret = IRQ_NONE;
|
|
u8 interrupt;
|
|
|
|
if (hdmi->i2c)
|
|
ret = inno_hdmi_i2c_irq(hdmi);
|
|
|
|
interrupt = hdmi_readb(hdmi, HDMI_STATUS);
|
|
if (interrupt & m_INT_HOTPLUG) {
|
|
hdmi_modb(hdmi, HDMI_STATUS, m_INT_HOTPLUG, m_INT_HOTPLUG);
|
|
ret = IRQ_WAKE_THREAD;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t inno_hdmi_irq(int irq, void *dev_id)
|
|
{
|
|
struct inno_hdmi *hdmi = dev_id;
|
|
|
|
drm_helper_hpd_irq_event(hdmi->connector.dev);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int inno_hdmi_i2c_read(struct inno_hdmi *hdmi, struct i2c_msg *msgs)
|
|
{
|
|
int length = msgs->len;
|
|
u8 *buf = msgs->buf;
|
|
int ret;
|
|
|
|
ret = wait_for_completion_timeout(&hdmi->i2c->cmp, HZ / 10);
|
|
if (!ret)
|
|
return -EAGAIN;
|
|
|
|
while (length--)
|
|
*buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inno_hdmi_i2c_write(struct inno_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;
|
|
|
|
reinit_completion(&hdmi->i2c->cmp);
|
|
|
|
if (msgs->addr == DDC_SEGMENT_ADDR)
|
|
hdmi->i2c->segment_addr = msgs->buf[0];
|
|
if (msgs->addr == DDC_ADDR)
|
|
hdmi->i2c->ddc_addr = msgs->buf[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 inno_hdmi_i2c_xfer(struct i2c_adapter *adap,
|
|
struct i2c_msg *msgs, int num)
|
|
{
|
|
struct inno_hdmi *hdmi = i2c_get_adapdata(adap);
|
|
struct inno_hdmi_i2c *i2c = hdmi->i2c;
|
|
int i, ret = 0;
|
|
|
|
mutex_lock(&i2c->lock);
|
|
|
|
/* Clear the EDID interrupt flag and unmute the interrupt */
|
|
hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_EDID_READY);
|
|
hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
|
|
|
|
for (i = 0; i < num; i++) {
|
|
DRM_DEV_DEBUG(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 = inno_hdmi_i2c_read(hdmi, &msgs[i]);
|
|
else
|
|
ret = inno_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);
|
|
|
|
mutex_unlock(&i2c->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u32 inno_hdmi_i2c_func(struct i2c_adapter *adapter)
|
|
{
|
|
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
|
|
}
|
|
|
|
static const struct i2c_algorithm inno_hdmi_algorithm = {
|
|
.master_xfer = inno_hdmi_i2c_xfer,
|
|
.functionality = inno_hdmi_i2c_func,
|
|
};
|
|
|
|
static struct i2c_adapter *inno_hdmi_i2c_adapter(struct inno_hdmi *hdmi)
|
|
{
|
|
struct i2c_adapter *adap;
|
|
struct inno_hdmi_i2c *i2c;
|
|
int ret;
|
|
|
|
i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
|
|
if (!i2c)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
mutex_init(&i2c->lock);
|
|
init_completion(&i2c->cmp);
|
|
|
|
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 = &inno_hdmi_algorithm;
|
|
strlcpy(adap->name, "Inno 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;
|
|
|
|
DRM_DEV_INFO(hdmi->dev, "registered %s I2C bus driver\n", adap->name);
|
|
|
|
return adap;
|
|
}
|
|
|
|
static int inno_hdmi_bind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct drm_device *drm = data;
|
|
struct inno_hdmi *hdmi;
|
|
struct resource *iores;
|
|
int irq;
|
|
int ret;
|
|
|
|
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
|
|
if (!hdmi)
|
|
return -ENOMEM;
|
|
|
|
hdmi->dev = dev;
|
|
hdmi->drm_dev = drm;
|
|
|
|
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
hdmi->regs = devm_ioremap_resource(dev, iores);
|
|
if (IS_ERR(hdmi->regs))
|
|
return PTR_ERR(hdmi->regs);
|
|
|
|
hdmi->pclk = devm_clk_get(hdmi->dev, "pclk");
|
|
if (IS_ERR(hdmi->pclk)) {
|
|
DRM_DEV_ERROR(hdmi->dev, "Unable to get HDMI pclk clk\n");
|
|
return PTR_ERR(hdmi->pclk);
|
|
}
|
|
|
|
ret = clk_prepare_enable(hdmi->pclk);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(hdmi->dev,
|
|
"Cannot enable HDMI pclk clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
ret = irq;
|
|
goto err_disable_clk;
|
|
}
|
|
|
|
inno_hdmi_reset(hdmi);
|
|
|
|
hdmi->ddc = inno_hdmi_i2c_adapter(hdmi);
|
|
if (IS_ERR(hdmi->ddc)) {
|
|
ret = PTR_ERR(hdmi->ddc);
|
|
hdmi->ddc = NULL;
|
|
goto err_disable_clk;
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
inno_hdmi_i2c_init(hdmi);
|
|
|
|
ret = inno_hdmi_register(drm, hdmi);
|
|
if (ret)
|
|
goto err_put_adapter;
|
|
|
|
dev_set_drvdata(dev, hdmi);
|
|
|
|
/* Unmute hotplug interrupt */
|
|
hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1));
|
|
|
|
ret = devm_request_threaded_irq(dev, irq, inno_hdmi_hardirq,
|
|
inno_hdmi_irq, IRQF_SHARED,
|
|
dev_name(dev), hdmi);
|
|
if (ret < 0)
|
|
goto err_cleanup_hdmi;
|
|
|
|
return 0;
|
|
err_cleanup_hdmi:
|
|
hdmi->connector.funcs->destroy(&hdmi->connector);
|
|
hdmi->encoder.funcs->destroy(&hdmi->encoder);
|
|
err_put_adapter:
|
|
i2c_put_adapter(hdmi->ddc);
|
|
err_disable_clk:
|
|
clk_disable_unprepare(hdmi->pclk);
|
|
return ret;
|
|
}
|
|
|
|
static void inno_hdmi_unbind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
struct inno_hdmi *hdmi = dev_get_drvdata(dev);
|
|
|
|
hdmi->connector.funcs->destroy(&hdmi->connector);
|
|
hdmi->encoder.funcs->destroy(&hdmi->encoder);
|
|
|
|
i2c_put_adapter(hdmi->ddc);
|
|
clk_disable_unprepare(hdmi->pclk);
|
|
}
|
|
|
|
static const struct component_ops inno_hdmi_ops = {
|
|
.bind = inno_hdmi_bind,
|
|
.unbind = inno_hdmi_unbind,
|
|
};
|
|
|
|
static int inno_hdmi_probe(struct platform_device *pdev)
|
|
{
|
|
return component_add(&pdev->dev, &inno_hdmi_ops);
|
|
}
|
|
|
|
static int inno_hdmi_remove(struct platform_device *pdev)
|
|
{
|
|
component_del(&pdev->dev, &inno_hdmi_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id inno_hdmi_dt_ids[] = {
|
|
{ .compatible = "rockchip,rk3036-inno-hdmi",
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, inno_hdmi_dt_ids);
|
|
|
|
struct platform_driver inno_hdmi_driver = {
|
|
.probe = inno_hdmi_probe,
|
|
.remove = inno_hdmi_remove,
|
|
.driver = {
|
|
.name = "innohdmi-rockchip",
|
|
.of_match_table = inno_hdmi_dt_ids,
|
|
},
|
|
};
|