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760 lines
18 KiB
760 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright 2016 Linaro Ltd. |
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* Copyright 2016 ZTE Corporation. |
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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_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_print.h> |
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#include <drm/drm_simple_kms_helper.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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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 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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&hdmi->connector, |
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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, |
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&hdmi->connector, |
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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(VOU_HDMI, 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(VOU_HDMI, 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 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_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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.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_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); |
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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_with_ddc(drm, &hdmi->connector, |
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&zx_hdmi_connector_funcs, |
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DRM_MODE_CONNECTOR_HDMIA, |
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&hdmi->ddc->adap); |
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drm_connector_helper_add(&hdmi->connector, |
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&zx_hdmi_connector_helper_funcs); |
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drm_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_mute(struct device *dev, void *data, |
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bool enable, int direction) |
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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)); |
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return 0; |
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} |
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static const struct hdmi_codec_ops zx_hdmi_codec_ops = { |
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.audio_startup = zx_hdmi_audio_startup, |
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.hw_params = zx_hdmi_audio_hw_params, |
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.audio_shutdown = zx_hdmi_audio_shutdown, |
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.mute_stream = zx_hdmi_audio_mute, |
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.get_eld = zx_hdmi_audio_get_eld, |
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.no_capture_mute = 1, |
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}; |
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static struct hdmi_codec_pdata zx_hdmi_codec_pdata = { |
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.ops = &zx_hdmi_codec_ops, |
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.spdif = 1, |
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}; |
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static int zx_hdmi_audio_register(struct zx_hdmi *hdmi) |
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{ |
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struct platform_device *pdev; |
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pdev = platform_device_register_data(hdmi->dev, HDMI_CODEC_DRV_NAME, |
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PLATFORM_DEVID_AUTO, |
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&zx_hdmi_codec_pdata, |
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sizeof(zx_hdmi_codec_pdata)); |
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if (IS_ERR(pdev)) |
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return PTR_ERR(pdev); |
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hdmi->audio_pdev = pdev; |
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return 0; |
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} |
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static int zx_hdmi_i2c_read(struct zx_hdmi *hdmi, struct i2c_msg *msg) |
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{ |
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int len = msg->len; |
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u8 *buf = msg->buf; |
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int retry = 0; |
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int ret = 0; |
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|
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/* Bits [9:8] of bytes */ |
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hdmi_writeb(hdmi, ZX_DDC_DIN_CNT2, (len >> 8) & 0xff); |
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/* Bits [7:0] of bytes */ |
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hdmi_writeb(hdmi, ZX_DDC_DIN_CNT1, len & 0xff); |
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|
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/* Clear FIFO */ |
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hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK, DDC_CMD_CLEAR_FIFO); |
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|
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/* Kick off the read */ |
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hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK, |
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DDC_CMD_SEQUENTIAL_READ); |
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|
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while (len > 0) { |
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int cnt, i; |
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|
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/* 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; |
|
|
|
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, |
|
}, |
|
};
|
|
|