773 lines
18 KiB
C
773 lines
18 KiB
C
/*
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* Copyright 2016 Linaro Ltd.
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* Copyright 2016 ZTE Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/clk.h>
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#include <linux/component.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/irq.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_crtc_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/drmP.h>
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#include <sound/hdmi-codec.h>
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#include "zx_hdmi_regs.h"
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#include "zx_vou.h"
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#define ZX_HDMI_INFOFRAME_SIZE 31
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#define DDC_SEGMENT_ADDR 0x30
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struct zx_hdmi_i2c {
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struct i2c_adapter adap;
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struct mutex lock;
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};
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struct zx_hdmi {
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struct drm_connector connector;
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struct drm_encoder encoder;
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struct zx_hdmi_i2c *ddc;
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struct device *dev;
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struct drm_device *drm;
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void __iomem *mmio;
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struct clk *cec_clk;
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struct clk *osc_clk;
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struct clk *xclk;
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bool sink_is_hdmi;
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bool sink_has_audio;
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const struct vou_inf *inf;
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struct platform_device *audio_pdev;
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};
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#define to_zx_hdmi(x) container_of(x, struct zx_hdmi, x)
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static const struct vou_inf vou_inf_hdmi = {
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.id = VOU_HDMI,
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.data_sel = VOU_YUV444,
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.clocks_en_bits = BIT(24) | BIT(18) | BIT(6),
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.clocks_sel_bits = BIT(13) | BIT(2),
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};
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static inline u8 hdmi_readb(struct zx_hdmi *hdmi, u16 offset)
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{
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return readl_relaxed(hdmi->mmio + offset * 4);
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}
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static inline void hdmi_writeb(struct zx_hdmi *hdmi, u16 offset, u8 val)
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{
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writel_relaxed(val, hdmi->mmio + offset * 4);
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}
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static inline void hdmi_writeb_mask(struct zx_hdmi *hdmi, u16 offset,
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u8 mask, u8 val)
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{
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u8 tmp;
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tmp = hdmi_readb(hdmi, offset);
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tmp = (tmp & ~mask) | (val & mask);
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hdmi_writeb(hdmi, offset, tmp);
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}
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static int zx_hdmi_infoframe_trans(struct zx_hdmi *hdmi,
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union hdmi_infoframe *frame, u8 fsel)
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{
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u8 buffer[ZX_HDMI_INFOFRAME_SIZE];
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int num;
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int i;
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hdmi_writeb(hdmi, TPI_INFO_FSEL, fsel);
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num = hdmi_infoframe_pack(frame, buffer, ZX_HDMI_INFOFRAME_SIZE);
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if (num < 0) {
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DRM_DEV_ERROR(hdmi->dev, "failed to pack infoframe: %d\n", num);
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return num;
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}
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for (i = 0; i < num; i++)
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hdmi_writeb(hdmi, TPI_INFO_B0 + i, buffer[i]);
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hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_RPT,
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TPI_INFO_TRANS_RPT);
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hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_EN,
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TPI_INFO_TRANS_EN);
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return num;
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}
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static int zx_hdmi_config_video_vsi(struct zx_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 ret;
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ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
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mode);
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if (ret) {
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DRM_DEV_ERROR(hdmi->dev, "failed to get vendor infoframe: %d\n",
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ret);
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return ret;
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}
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return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_VSIF);
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}
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static int zx_hdmi_config_video_avi(struct zx_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 ret;
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ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
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if (ret) {
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DRM_DEV_ERROR(hdmi->dev, "failed to get avi infoframe: %d\n",
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ret);
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return ret;
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}
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/* We always use YUV444 for HDMI output. */
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frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
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return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AVI);
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}
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static void zx_hdmi_encoder_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adj_mode)
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{
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struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
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if (hdmi->sink_is_hdmi) {
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zx_hdmi_config_video_avi(hdmi, mode);
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zx_hdmi_config_video_vsi(hdmi, mode);
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}
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}
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static void zx_hdmi_phy_start(struct zx_hdmi *hdmi)
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{
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/* Copy from ZTE BSP code */
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hdmi_writeb(hdmi, 0x222, 0x0);
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hdmi_writeb(hdmi, 0x224, 0x4);
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hdmi_writeb(hdmi, 0x909, 0x0);
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hdmi_writeb(hdmi, 0x7b0, 0x90);
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hdmi_writeb(hdmi, 0x7b1, 0x00);
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hdmi_writeb(hdmi, 0x7b2, 0xa7);
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hdmi_writeb(hdmi, 0x7b8, 0xaa);
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hdmi_writeb(hdmi, 0x7b2, 0xa7);
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hdmi_writeb(hdmi, 0x7b3, 0x0f);
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hdmi_writeb(hdmi, 0x7b4, 0x0f);
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hdmi_writeb(hdmi, 0x7b5, 0x55);
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hdmi_writeb(hdmi, 0x7b7, 0x03);
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hdmi_writeb(hdmi, 0x7b9, 0x12);
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hdmi_writeb(hdmi, 0x7ba, 0x32);
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hdmi_writeb(hdmi, 0x7bc, 0x68);
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hdmi_writeb(hdmi, 0x7be, 0x40);
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hdmi_writeb(hdmi, 0x7bf, 0x84);
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hdmi_writeb(hdmi, 0x7c1, 0x0f);
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hdmi_writeb(hdmi, 0x7c8, 0x02);
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hdmi_writeb(hdmi, 0x7c9, 0x03);
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hdmi_writeb(hdmi, 0x7ca, 0x40);
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hdmi_writeb(hdmi, 0x7dc, 0x31);
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hdmi_writeb(hdmi, 0x7e2, 0x04);
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hdmi_writeb(hdmi, 0x7e0, 0x06);
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hdmi_writeb(hdmi, 0x7cb, 0x68);
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hdmi_writeb(hdmi, 0x7f9, 0x02);
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hdmi_writeb(hdmi, 0x7b6, 0x02);
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hdmi_writeb(hdmi, 0x7f3, 0x0);
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}
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static void zx_hdmi_hw_enable(struct zx_hdmi *hdmi)
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{
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/* Enable pclk */
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hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, CLKPWD_PDIDCK);
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/* Enable HDMI for TX */
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hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, FUNC_HDMI_EN);
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/* Enable deep color packet */
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hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
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/* Enable HDMI/MHL mode for output */
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hdmi_writeb_mask(hdmi, TEST_TXCTRL, TEST_TXCTRL_HDMI_MODE,
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TEST_TXCTRL_HDMI_MODE);
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/* Configure reg_qc_sel */
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hdmi_writeb(hdmi, HDMICTL4, 0x3);
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/* Enable interrupt */
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hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT,
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INTR1_MONITOR_DETECT);
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/* Start up phy */
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zx_hdmi_phy_start(hdmi);
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}
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static void zx_hdmi_hw_disable(struct zx_hdmi *hdmi)
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{
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/* Disable interrupt */
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hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT, 0);
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/* Disable deep color packet */
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hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
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/* Disable HDMI for TX */
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hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, 0);
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/* Disable pclk */
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hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, 0);
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}
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static void zx_hdmi_encoder_enable(struct drm_encoder *encoder)
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{
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struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
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clk_prepare_enable(hdmi->cec_clk);
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clk_prepare_enable(hdmi->osc_clk);
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clk_prepare_enable(hdmi->xclk);
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zx_hdmi_hw_enable(hdmi);
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vou_inf_enable(hdmi->inf, encoder->crtc);
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}
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static void zx_hdmi_encoder_disable(struct drm_encoder *encoder)
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{
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struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
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vou_inf_disable(hdmi->inf, encoder->crtc);
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zx_hdmi_hw_disable(hdmi);
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clk_disable_unprepare(hdmi->xclk);
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clk_disable_unprepare(hdmi->osc_clk);
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clk_disable_unprepare(hdmi->cec_clk);
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}
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static const struct drm_encoder_helper_funcs zx_hdmi_encoder_helper_funcs = {
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.enable = zx_hdmi_encoder_enable,
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.disable = zx_hdmi_encoder_disable,
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.mode_set = zx_hdmi_encoder_mode_set,
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};
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static const struct drm_encoder_funcs zx_hdmi_encoder_funcs = {
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.destroy = drm_encoder_cleanup,
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};
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static int zx_hdmi_connector_get_modes(struct drm_connector *connector)
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{
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struct zx_hdmi *hdmi = to_zx_hdmi(connector);
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struct edid *edid;
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int ret;
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edid = drm_get_edid(connector, &hdmi->ddc->adap);
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if (!edid)
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return 0;
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hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
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hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
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drm_mode_connector_update_edid_property(connector, edid);
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ret = drm_add_edid_modes(connector, edid);
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kfree(edid);
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return ret;
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}
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static enum drm_mode_status
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zx_hdmi_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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return MODE_OK;
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}
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static struct drm_connector_helper_funcs zx_hdmi_connector_helper_funcs = {
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.get_modes = zx_hdmi_connector_get_modes,
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.mode_valid = zx_hdmi_connector_mode_valid,
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};
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static enum drm_connector_status
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zx_hdmi_connector_detect(struct drm_connector *connector, bool force)
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{
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struct zx_hdmi *hdmi = to_zx_hdmi(connector);
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return (hdmi_readb(hdmi, TPI_HPD_RSEN) & TPI_HPD_CONNECTION) ?
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connector_status_connected : connector_status_disconnected;
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}
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static const struct drm_connector_funcs zx_hdmi_connector_funcs = {
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.dpms = drm_atomic_helper_connector_dpms,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.detect = zx_hdmi_connector_detect,
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.destroy = drm_connector_cleanup,
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.reset = drm_atomic_helper_connector_reset,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static int zx_hdmi_register(struct drm_device *drm, struct zx_hdmi *hdmi)
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{
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struct drm_encoder *encoder = &hdmi->encoder;
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encoder->possible_crtcs = VOU_CRTC_MASK;
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drm_encoder_init(drm, encoder, &zx_hdmi_encoder_funcs,
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DRM_MODE_ENCODER_TMDS, NULL);
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drm_encoder_helper_add(encoder, &zx_hdmi_encoder_helper_funcs);
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hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
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drm_connector_init(drm, &hdmi->connector, &zx_hdmi_connector_funcs,
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DRM_MODE_CONNECTOR_HDMIA);
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drm_connector_helper_add(&hdmi->connector,
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&zx_hdmi_connector_helper_funcs);
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drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
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return 0;
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}
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static irqreturn_t zx_hdmi_irq_thread(int irq, void *dev_id)
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{
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struct zx_hdmi *hdmi = dev_id;
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drm_helper_hpd_irq_event(hdmi->connector.dev);
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return IRQ_HANDLED;
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}
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static irqreturn_t zx_hdmi_irq_handler(int irq, void *dev_id)
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{
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struct zx_hdmi *hdmi = dev_id;
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u8 lstat;
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lstat = hdmi_readb(hdmi, L1_INTR_STAT);
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/* Monitor detect/HPD interrupt */
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if (lstat & L1_INTR_STAT_INTR1) {
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u8 stat;
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stat = hdmi_readb(hdmi, INTR1_STAT);
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hdmi_writeb(hdmi, INTR1_STAT, stat);
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if (stat & INTR1_MONITOR_DETECT)
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return IRQ_WAKE_THREAD;
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}
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return IRQ_NONE;
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}
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static int zx_hdmi_audio_startup(struct device *dev, void *data)
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{
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struct zx_hdmi *hdmi = dev_get_drvdata(dev);
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struct drm_encoder *encoder = &hdmi->encoder;
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vou_inf_hdmi_audio_sel(encoder->crtc, VOU_HDMI_AUD_SPDIF);
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return 0;
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}
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static void zx_hdmi_audio_shutdown(struct device *dev, void *data)
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{
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struct zx_hdmi *hdmi = dev_get_drvdata(dev);
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/* Disable audio input */
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hdmi_writeb_mask(hdmi, AUD_EN, AUD_IN_EN, 0);
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}
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static inline int zx_hdmi_audio_get_n(unsigned int fs)
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{
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unsigned int n;
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if (fs && (fs % 44100) == 0)
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n = 6272 * (fs / 44100);
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else
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n = fs * 128 / 1000;
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return n;
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}
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static int zx_hdmi_audio_hw_params(struct device *dev,
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void *data,
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struct hdmi_codec_daifmt *daifmt,
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struct hdmi_codec_params *params)
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{
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struct zx_hdmi *hdmi = dev_get_drvdata(dev);
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struct hdmi_audio_infoframe *cea = ¶ms->cea;
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union hdmi_infoframe frame;
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int n;
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/* We only support spdif for now */
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if (daifmt->fmt != HDMI_SPDIF) {
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DRM_DEV_ERROR(hdmi->dev, "invalid daifmt %d\n", daifmt->fmt);
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return -EINVAL;
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}
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switch (params->sample_width) {
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case 16:
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hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
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SPDIF_SAMPLE_SIZE_16BIT);
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break;
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case 20:
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hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
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SPDIF_SAMPLE_SIZE_20BIT);
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break;
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case 24:
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hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
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SPDIF_SAMPLE_SIZE_24BIT);
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break;
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default:
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DRM_DEV_ERROR(hdmi->dev, "invalid sample width %d\n",
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params->sample_width);
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return -EINVAL;
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}
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/* CTS is calculated by hardware, and we only need to take care of N */
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n = zx_hdmi_audio_get_n(params->sample_rate);
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hdmi_writeb(hdmi, N_SVAL1, n & 0xff);
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hdmi_writeb(hdmi, N_SVAL2, (n >> 8) & 0xff);
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hdmi_writeb(hdmi, N_SVAL3, (n >> 16) & 0xf);
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/* Enable spdif mode */
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hdmi_writeb_mask(hdmi, AUD_MODE, SPDIF_EN, SPDIF_EN);
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/* Enable audio input */
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hdmi_writeb_mask(hdmi, AUD_EN, AUD_IN_EN, AUD_IN_EN);
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memcpy(&frame.audio, cea, sizeof(*cea));
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return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AUDIO);
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}
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static int zx_hdmi_audio_digital_mute(struct device *dev, void *data,
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bool enable)
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{
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struct zx_hdmi *hdmi = dev_get_drvdata(dev);
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if (enable)
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hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, TPI_AUD_MUTE,
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TPI_AUD_MUTE);
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else
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hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, TPI_AUD_MUTE, 0);
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return 0;
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}
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static int zx_hdmi_audio_get_eld(struct device *dev, void *data,
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uint8_t *buf, size_t len)
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{
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struct zx_hdmi *hdmi = dev_get_drvdata(dev);
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struct drm_connector *connector = &hdmi->connector;
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|
|
|
memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct hdmi_codec_ops zx_hdmi_codec_ops = {
|
|
.audio_startup = zx_hdmi_audio_startup,
|
|
.hw_params = zx_hdmi_audio_hw_params,
|
|
.audio_shutdown = zx_hdmi_audio_shutdown,
|
|
.digital_mute = zx_hdmi_audio_digital_mute,
|
|
.get_eld = zx_hdmi_audio_get_eld,
|
|
};
|
|
|
|
static struct hdmi_codec_pdata zx_hdmi_codec_pdata = {
|
|
.ops = &zx_hdmi_codec_ops,
|
|
.spdif = 1,
|
|
};
|
|
|
|
static int zx_hdmi_audio_register(struct zx_hdmi *hdmi)
|
|
{
|
|
struct platform_device *pdev;
|
|
|
|
pdev = platform_device_register_data(hdmi->dev, HDMI_CODEC_DRV_NAME,
|
|
PLATFORM_DEVID_AUTO,
|
|
&zx_hdmi_codec_pdata,
|
|
sizeof(zx_hdmi_codec_pdata));
|
|
if (IS_ERR(pdev))
|
|
return PTR_ERR(pdev);
|
|
|
|
hdmi->audio_pdev = pdev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zx_hdmi_i2c_read(struct zx_hdmi *hdmi, struct i2c_msg *msg)
|
|
{
|
|
int len = msg->len;
|
|
u8 *buf = msg->buf;
|
|
int retry = 0;
|
|
int ret = 0;
|
|
|
|
/* Bits [9:8] of bytes */
|
|
hdmi_writeb(hdmi, ZX_DDC_DIN_CNT2, (len >> 8) & 0xff);
|
|
/* Bits [7:0] of bytes */
|
|
hdmi_writeb(hdmi, ZX_DDC_DIN_CNT1, len & 0xff);
|
|
|
|
/* Clear FIFO */
|
|
hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK, DDC_CMD_CLEAR_FIFO);
|
|
|
|
/* Kick off the read */
|
|
hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK,
|
|
DDC_CMD_SEQUENTIAL_READ);
|
|
|
|
while (len > 0) {
|
|
int cnt, i;
|
|
|
|
/* FIFO needs some time to get ready */
|
|
usleep_range(500, 1000);
|
|
|
|
cnt = hdmi_readb(hdmi, ZX_DDC_DOUT_CNT) & DDC_DOUT_CNT_MASK;
|
|
if (cnt == 0) {
|
|
if (++retry > 5) {
|
|
DRM_DEV_ERROR(hdmi->dev,
|
|
"DDC FIFO read timed out!");
|
|
return -ETIMEDOUT;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
for (i = 0; i < cnt; i++)
|
|
*buf++ = hdmi_readb(hdmi, ZX_DDC_DATA);
|
|
len -= cnt;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int zx_hdmi_i2c_write(struct zx_hdmi *hdmi, struct i2c_msg *msg)
|
|
{
|
|
/*
|
|
* The DDC I2C adapter is only for reading EDID data, so we assume
|
|
* that the write to this adapter must be the EDID data offset.
|
|
*/
|
|
if ((msg->len != 1) ||
|
|
((msg->addr != DDC_ADDR) && (msg->addr != DDC_SEGMENT_ADDR)))
|
|
return -EINVAL;
|
|
|
|
if (msg->addr == DDC_SEGMENT_ADDR)
|
|
hdmi_writeb(hdmi, ZX_DDC_SEGM, msg->addr << 1);
|
|
else if (msg->addr == DDC_ADDR)
|
|
hdmi_writeb(hdmi, ZX_DDC_ADDR, msg->addr << 1);
|
|
|
|
hdmi_writeb(hdmi, ZX_DDC_OFFSET, msg->buf[0]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zx_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
|
|
int num)
|
|
{
|
|
struct zx_hdmi *hdmi = i2c_get_adapdata(adap);
|
|
struct zx_hdmi_i2c *ddc = hdmi->ddc;
|
|
int i, ret = 0;
|
|
|
|
mutex_lock(&ddc->lock);
|
|
|
|
/* Enable DDC master access */
|
|
hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, HW_DDC_MASTER);
|
|
|
|
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 = zx_hdmi_i2c_read(hdmi, &msgs[i]);
|
|
else
|
|
ret = zx_hdmi_i2c_write(hdmi, &msgs[i]);
|
|
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
|
|
if (!ret)
|
|
ret = num;
|
|
|
|
/* Disable DDC master access */
|
|
hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, 0);
|
|
|
|
mutex_unlock(&ddc->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u32 zx_hdmi_i2c_func(struct i2c_adapter *adapter)
|
|
{
|
|
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
|
|
}
|
|
|
|
static const struct i2c_algorithm zx_hdmi_algorithm = {
|
|
.master_xfer = zx_hdmi_i2c_xfer,
|
|
.functionality = zx_hdmi_i2c_func,
|
|
};
|
|
|
|
static int zx_hdmi_ddc_register(struct zx_hdmi *hdmi)
|
|
{
|
|
struct i2c_adapter *adap;
|
|
struct zx_hdmi_i2c *ddc;
|
|
int ret;
|
|
|
|
ddc = devm_kzalloc(hdmi->dev, sizeof(*ddc), GFP_KERNEL);
|
|
if (!ddc)
|
|
return -ENOMEM;
|
|
|
|
hdmi->ddc = ddc;
|
|
mutex_init(&ddc->lock);
|
|
|
|
adap = &ddc->adap;
|
|
adap->owner = THIS_MODULE;
|
|
adap->class = I2C_CLASS_DDC;
|
|
adap->dev.parent = hdmi->dev;
|
|
adap->algo = &zx_hdmi_algorithm;
|
|
snprintf(adap->name, sizeof(adap->name), "zx hdmi i2c");
|
|
|
|
ret = i2c_add_adapter(adap);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(hdmi->dev, "failed to add I2C adapter: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
i2c_set_adapdata(adap, hdmi);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zx_hdmi_bind(struct device *dev, struct device *master, void *data)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct drm_device *drm = data;
|
|
struct resource *res;
|
|
struct zx_hdmi *hdmi;
|
|
int irq;
|
|
int ret;
|
|
|
|
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
|
|
if (!hdmi)
|
|
return -ENOMEM;
|
|
|
|
hdmi->dev = dev;
|
|
hdmi->drm = drm;
|
|
hdmi->inf = &vou_inf_hdmi;
|
|
|
|
dev_set_drvdata(dev, hdmi);
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
hdmi->mmio = devm_ioremap_resource(dev, res);
|
|
if (IS_ERR(hdmi->mmio)) {
|
|
ret = PTR_ERR(hdmi->mmio);
|
|
DRM_DEV_ERROR(dev, "failed to remap hdmi region: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
hdmi->cec_clk = devm_clk_get(hdmi->dev, "osc_cec");
|
|
if (IS_ERR(hdmi->cec_clk)) {
|
|
ret = PTR_ERR(hdmi->cec_clk);
|
|
DRM_DEV_ERROR(dev, "failed to get cec_clk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
hdmi->osc_clk = devm_clk_get(hdmi->dev, "osc_clk");
|
|
if (IS_ERR(hdmi->osc_clk)) {
|
|
ret = PTR_ERR(hdmi->osc_clk);
|
|
DRM_DEV_ERROR(dev, "failed to get osc_clk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
hdmi->xclk = devm_clk_get(hdmi->dev, "xclk");
|
|
if (IS_ERR(hdmi->xclk)) {
|
|
ret = PTR_ERR(hdmi->xclk);
|
|
DRM_DEV_ERROR(dev, "failed to get xclk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = zx_hdmi_ddc_register(hdmi);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(dev, "failed to register ddc: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = zx_hdmi_audio_register(hdmi);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(dev, "failed to register audio: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = zx_hdmi_register(drm, hdmi);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(dev, "failed to register hdmi: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = devm_request_threaded_irq(dev, irq, zx_hdmi_irq_handler,
|
|
zx_hdmi_irq_thread, IRQF_SHARED,
|
|
dev_name(dev), hdmi);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(dev, "failed to request threaded irq: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void zx_hdmi_unbind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
|
|
|
|
hdmi->connector.funcs->destroy(&hdmi->connector);
|
|
hdmi->encoder.funcs->destroy(&hdmi->encoder);
|
|
|
|
if (hdmi->audio_pdev)
|
|
platform_device_unregister(hdmi->audio_pdev);
|
|
}
|
|
|
|
static const struct component_ops zx_hdmi_component_ops = {
|
|
.bind = zx_hdmi_bind,
|
|
.unbind = zx_hdmi_unbind,
|
|
};
|
|
|
|
static int zx_hdmi_probe(struct platform_device *pdev)
|
|
{
|
|
return component_add(&pdev->dev, &zx_hdmi_component_ops);
|
|
}
|
|
|
|
static int zx_hdmi_remove(struct platform_device *pdev)
|
|
{
|
|
component_del(&pdev->dev, &zx_hdmi_component_ops);
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id zx_hdmi_of_match[] = {
|
|
{ .compatible = "zte,zx296718-hdmi", },
|
|
{ /* end */ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, zx_hdmi_of_match);
|
|
|
|
struct platform_driver zx_hdmi_driver = {
|
|
.probe = zx_hdmi_probe,
|
|
.remove = zx_hdmi_remove,
|
|
.driver = {
|
|
.name = "zx-hdmi",
|
|
.of_match_table = zx_hdmi_of_match,
|
|
},
|
|
};
|