drm/exynos/hdmi: refactor infoframe code
Use core helpers to generate infoframes and generate vendor frame if necessary. Changelog: - changed 'ret >= 0' checks to '!ret' Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda
Inki Dae
parent
f03ee46be9
commit
5f9e228d1c
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@ -47,19 +47,6 @@
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#define HOTPLUG_DEBOUNCE_MS 1100
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/* AVI header and aspect ratio */
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#define HDMI_AVI_VERSION 0x02
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#define HDMI_AVI_LENGTH 0x0d
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/* AUI header info */
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#define HDMI_AUI_VERSION 0x01
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#define HDMI_AUI_LENGTH 0x0a
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/* AVI active format aspect ratio */
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#define AVI_SAME_AS_PIC_ASPECT_RATIO 0x08
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#define AVI_4_3_CENTER_RATIO 0x09
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#define AVI_16_9_CENTER_RATIO 0x0a
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enum hdmi_type {
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HDMI_TYPE13,
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HDMI_TYPE14,
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@ -131,7 +118,6 @@ struct hdmi_context {
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bool dvi_mode;
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struct delayed_work hotplug_work;
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struct drm_display_mode current_mode;
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u8 cea_video_id;
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const struct hdmi_driver_data *drv_data;
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void __iomem *regs;
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@ -681,6 +667,13 @@ static inline void hdmi_reg_writev(struct hdmi_context *hdata, u32 reg_id,
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}
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}
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static inline void hdmi_reg_write_buf(struct hdmi_context *hdata, u32 reg_id,
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u8 *buf, int size)
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{
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for (reg_id = hdmi_map_reg(hdata, reg_id); size; --size, reg_id += 4)
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writel(*buf++, hdata->regs + reg_id);
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}
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static inline void hdmi_reg_writemask(struct hdmi_context *hdata,
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u32 reg_id, u32 value, u32 mask)
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{
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@ -762,93 +755,50 @@ static int hdmi_clk_set_parents(struct hdmi_context *hdata, bool to_phy)
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return ret;
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}
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static u8 hdmi_chksum(struct hdmi_context *hdata,
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u32 start, u8 len, u32 hdr_sum)
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static void hdmi_reg_infoframes(struct hdmi_context *hdata)
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{
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int i;
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/* hdr_sum : header0 + header1 + header2
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* start : start address of packet byte1
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* len : packet bytes - 1 */
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for (i = 0; i < len; ++i)
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hdr_sum += 0xff & hdmi_reg_read(hdata, start + i * 4);
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/* return 2's complement of 8 bit hdr_sum */
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return (u8)(~(hdr_sum & 0xff) + 1);
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}
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static void hdmi_reg_infoframe(struct hdmi_context *hdata,
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union hdmi_infoframe *infoframe)
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{
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u32 hdr_sum;
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u8 chksum;
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u8 ar;
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union hdmi_infoframe frm;
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u8 buf[25];
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int ret;
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if (hdata->dvi_mode) {
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hdmi_reg_writeb(hdata, HDMI_VSI_CON,
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HDMI_VSI_CON_DO_NOT_TRANSMIT);
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hdmi_reg_writeb(hdata, HDMI_AVI_CON,
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HDMI_AVI_CON_DO_NOT_TRANSMIT);
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hdmi_reg_writeb(hdata, HDMI_VSI_CON,
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HDMI_VSI_CON_DO_NOT_TRANSMIT);
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hdmi_reg_writeb(hdata, HDMI_AUI_CON, HDMI_AUI_CON_NO_TRAN);
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return;
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}
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switch (infoframe->any.type) {
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case HDMI_INFOFRAME_TYPE_AVI:
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ret = drm_hdmi_avi_infoframe_from_display_mode(&frm.avi,
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&hdata->current_mode);
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if (!ret)
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ret = hdmi_avi_infoframe_pack(&frm.avi, buf, sizeof(buf));
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if (ret > 0) {
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hdmi_reg_writeb(hdata, HDMI_AVI_CON, HDMI_AVI_CON_EVERY_VSYNC);
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hdmi_reg_writeb(hdata, HDMI_AVI_HEADER0, infoframe->any.type);
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hdmi_reg_writeb(hdata, HDMI_AVI_HEADER1,
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infoframe->any.version);
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hdmi_reg_writeb(hdata, HDMI_AVI_HEADER2, infoframe->any.length);
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hdr_sum = infoframe->any.type + infoframe->any.version +
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infoframe->any.length;
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hdmi_reg_write_buf(hdata, HDMI_AVI_HEADER0, buf, ret);
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} else {
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DRM_INFO("%s: invalid AVI infoframe (%d)\n", __func__, ret);
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}
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/* Output format zero hardcoded ,RGB YBCR selection */
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hdmi_reg_writeb(hdata, HDMI_AVI_BYTE(1), 0 << 5 |
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AVI_ACTIVE_FORMAT_VALID |
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AVI_UNDERSCANNED_DISPLAY_VALID);
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ret = drm_hdmi_vendor_infoframe_from_display_mode(&frm.vendor.hdmi,
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&hdata->current_mode);
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if (!ret)
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ret = hdmi_vendor_infoframe_pack(&frm.vendor.hdmi, buf,
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sizeof(buf));
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if (ret > 0) {
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hdmi_reg_writeb(hdata, HDMI_VSI_CON, HDMI_VSI_CON_EVERY_VSYNC);
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hdmi_reg_write_buf(hdata, HDMI_VSI_HEADER0, buf, ret);
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}
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/*
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* Set the aspect ratio as per the mode, mentioned in
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* Table 9 AVI InfoFrame Data Byte 2 of CEA-861-D Standard
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*/
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ar = hdata->current_mode.picture_aspect_ratio;
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switch (ar) {
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case HDMI_PICTURE_ASPECT_4_3:
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ar |= AVI_4_3_CENTER_RATIO;
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break;
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case HDMI_PICTURE_ASPECT_16_9:
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ar |= AVI_16_9_CENTER_RATIO;
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break;
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case HDMI_PICTURE_ASPECT_NONE:
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default:
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ar |= AVI_SAME_AS_PIC_ASPECT_RATIO;
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break;
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}
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hdmi_reg_writeb(hdata, HDMI_AVI_BYTE(2), ar);
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hdmi_reg_writeb(hdata, HDMI_AVI_BYTE(4), hdata->cea_video_id);
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chksum = hdmi_chksum(hdata, HDMI_AVI_BYTE(1),
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infoframe->any.length, hdr_sum);
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DRM_DEBUG_KMS("AVI checksum = 0x%x\n", chksum);
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hdmi_reg_writeb(hdata, HDMI_AVI_CHECK_SUM, chksum);
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break;
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case HDMI_INFOFRAME_TYPE_AUDIO:
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hdmi_reg_writeb(hdata, HDMI_AUI_CON, 0x02);
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hdmi_reg_writeb(hdata, HDMI_AUI_HEADER0, infoframe->any.type);
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hdmi_reg_writeb(hdata, HDMI_AUI_HEADER1,
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infoframe->any.version);
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hdmi_reg_writeb(hdata, HDMI_AUI_HEADER2, infoframe->any.length);
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hdr_sum = infoframe->any.type + infoframe->any.version +
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infoframe->any.length;
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chksum = hdmi_chksum(hdata, HDMI_AUI_BYTE(1),
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infoframe->any.length, hdr_sum);
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DRM_DEBUG_KMS("AUI checksum = 0x%x\n", chksum);
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hdmi_reg_writeb(hdata, HDMI_AUI_CHECK_SUM, chksum);
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break;
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default:
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break;
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ret = hdmi_audio_infoframe_init(&frm.audio);
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if (!ret) {
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frm.audio.channels = 2;
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ret = hdmi_audio_infoframe_pack(&frm.audio, buf, sizeof(buf));
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}
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if (ret > 0) {
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hdmi_reg_writeb(hdata, HDMI_AUI_CON, HDMI_AUI_CON_EVERY_VSYNC);
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hdmi_reg_write_buf(hdata, HDMI_AUI_HEADER0, buf, ret);
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}
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}
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@ -1127,8 +1077,6 @@ static void hdmi_start(struct hdmi_context *hdata, bool start)
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static void hdmi_conf_init(struct hdmi_context *hdata)
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{
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union hdmi_infoframe infoframe;
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/* disable HPD interrupts from HDMI IP block, use GPIO instead */
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hdmi_reg_writemask(hdata, HDMI_INTC_CON, 0, HDMI_INTC_EN_GLOBAL |
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HDMI_INTC_EN_HPD_PLUG | HDMI_INTC_EN_HPD_UNPLUG);
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@ -1164,15 +1112,7 @@ static void hdmi_conf_init(struct hdmi_context *hdata)
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hdmi_reg_writeb(hdata, HDMI_V13_AUI_CON, 0x02);
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hdmi_reg_writeb(hdata, HDMI_V13_ACR_CON, 0x04);
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} else {
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infoframe.any.type = HDMI_INFOFRAME_TYPE_AVI;
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infoframe.any.version = HDMI_AVI_VERSION;
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infoframe.any.length = HDMI_AVI_LENGTH;
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hdmi_reg_infoframe(hdata, &infoframe);
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infoframe.any.type = HDMI_INFOFRAME_TYPE_AUDIO;
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infoframe.any.version = HDMI_AUI_VERSION;
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infoframe.any.length = HDMI_AUI_LENGTH;
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hdmi_reg_infoframe(hdata, &infoframe);
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hdmi_reg_infoframes(hdata);
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/* enable AVI packet every vsync, fixes purple line problem */
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hdmi_reg_writemask(hdata, HDMI_CON_1, 2, 3 << 5);
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@ -1458,7 +1398,6 @@ static void hdmi_mode_set(struct drm_encoder *encoder,
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"INTERLACED" : "PROGRESSIVE");
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drm_mode_copy(&hdata->current_mode, m);
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hdata->cea_video_id = drm_match_cea_mode(mode);
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}
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static void hdmi_set_refclk(struct hdmi_context *hdata, bool on)
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@ -361,9 +361,11 @@
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/* AUI bit definition */
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#define HDMI_AUI_CON_NO_TRAN (0 << 0)
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#define HDMI_AUI_CON_EVERY_VSYNC (1 << 1)
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/* VSI bit definition */
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#define HDMI_VSI_CON_DO_NOT_TRANSMIT (0 << 0)
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#define HDMI_VSI_CON_EVERY_VSYNC (1 << 1)
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/* HDCP related registers */
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#define HDMI_HDCP_SHA1(n) HDMI_CORE_BASE(0x7000 + 4 * (n))
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