diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 219 |
1 files changed, 102 insertions, 117 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 38eaa63afb31..88ccc0469316 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -35,6 +35,7 @@ #include <linux/io.h> #include <linux/of_address.h> #include <linux/of_device.h> +#include <linux/of_graph.h> #include <linux/hdmi.h> #include <linux/component.h> #include <linux/mfd/syscon.h> @@ -47,19 +48,6 @@ #define HOTPLUG_DEBOUNCE_MS 1100 -/* AVI header and aspect ratio */ -#define HDMI_AVI_VERSION 0x02 -#define HDMI_AVI_LENGTH 0x0d - -/* AUI header info */ -#define HDMI_AUI_VERSION 0x01 -#define HDMI_AUI_LENGTH 0x0a - -/* AVI active format aspect ratio */ -#define AVI_SAME_AS_PIC_ASPECT_RATIO 0x08 -#define AVI_4_3_CENTER_RATIO 0x09 -#define AVI_16_9_CENTER_RATIO 0x0a - enum hdmi_type { HDMI_TYPE13, HDMI_TYPE14, @@ -131,7 +119,6 @@ struct hdmi_context { bool dvi_mode; struct delayed_work hotplug_work; struct drm_display_mode current_mode; - u8 cea_video_id; const struct hdmi_driver_data *drv_data; void __iomem *regs; @@ -147,6 +134,7 @@ struct hdmi_context { struct regulator_bulk_data regul_bulk[ARRAY_SIZE(supply)]; struct regulator *reg_hdmi_en; struct exynos_drm_clk phy_clk; + struct drm_bridge *bridge; }; static inline struct hdmi_context *encoder_to_hdmi(struct drm_encoder *e) @@ -523,9 +511,9 @@ static const struct hdmiphy_config hdmiphy_5433_configs[] = { { .pixel_clock = 27000000, .conf = { - 0x01, 0x51, 0x22, 0x51, 0x08, 0xfc, 0x88, 0x46, - 0x72, 0x50, 0x24, 0x0c, 0x24, 0x0f, 0x7c, 0xa5, - 0xd4, 0x2b, 0x87, 0x00, 0x00, 0x04, 0x00, 0x30, + 0x01, 0x51, 0x2d, 0x75, 0x01, 0x00, 0x88, 0x02, + 0x72, 0x50, 0x44, 0x8c, 0x27, 0x00, 0x7c, 0xac, + 0xd6, 0x2b, 0x67, 0x00, 0x00, 0x04, 0x00, 0x30, 0x08, 0x10, 0x01, 0x01, 0x48, 0x40, 0x00, 0x40, }, }, @@ -533,9 +521,9 @@ static const struct hdmiphy_config hdmiphy_5433_configs[] = { .pixel_clock = 27027000, .conf = { 0x01, 0x51, 0x2d, 0x72, 0x64, 0x09, 0x88, 0xc3, - 0x71, 0x50, 0x24, 0x14, 0x24, 0x0f, 0x7c, 0xa5, - 0xd4, 0x2b, 0x87, 0x00, 0x00, 0x04, 0x00, 0x30, - 0x28, 0x10, 0x01, 0x01, 0x48, 0x40, 0x00, 0x40, + 0x71, 0x50, 0x44, 0x8c, 0x27, 0x00, 0x7c, 0xac, + 0xd6, 0x2b, 0x67, 0x00, 0x00, 0x04, 0x00, 0x30, + 0x08, 0x10, 0x01, 0x01, 0x48, 0x40, 0x00, 0x40, }, }, { @@ -601,6 +589,15 @@ static const struct hdmiphy_config hdmiphy_5433_configs[] = { 0x08, 0x10, 0x01, 0x01, 0x48, 0x4a, 0x00, 0x40, }, }, + { + .pixel_clock = 297000000, + .conf = { + 0x01, 0x51, 0x3E, 0x05, 0x40, 0xF0, 0x88, 0xC2, + 0x52, 0x53, 0x44, 0x8C, 0x27, 0x00, 0x7C, 0xAC, + 0xD6, 0x2B, 0x67, 0x00, 0x00, 0x04, 0x00, 0x30, + 0x08, 0x10, 0x01, 0x01, 0x48, 0x40, 0x00, 0x40, + }, + }, }; static const char * const hdmi_clk_gates4[] = { @@ -681,6 +678,13 @@ static inline void hdmi_reg_writev(struct hdmi_context *hdata, u32 reg_id, } } +static inline void hdmi_reg_write_buf(struct hdmi_context *hdata, u32 reg_id, + u8 *buf, int size) +{ + for (reg_id = hdmi_map_reg(hdata, reg_id); size; --size, reg_id += 4) + writel(*buf++, hdata->regs + reg_id); +} + static inline void hdmi_reg_writemask(struct hdmi_context *hdata, u32 reg_id, u32 value, u32 mask) { @@ -762,93 +766,51 @@ static int hdmi_clk_set_parents(struct hdmi_context *hdata, bool to_phy) return ret; } -static u8 hdmi_chksum(struct hdmi_context *hdata, - u32 start, u8 len, u32 hdr_sum) -{ - int i; - - /* hdr_sum : header0 + header1 + header2 - * start : start address of packet byte1 - * len : packet bytes - 1 */ - for (i = 0; i < len; ++i) - hdr_sum += 0xff & hdmi_reg_read(hdata, start + i * 4); - - /* return 2's complement of 8 bit hdr_sum */ - return (u8)(~(hdr_sum & 0xff) + 1); -} - -static void hdmi_reg_infoframe(struct hdmi_context *hdata, - union hdmi_infoframe *infoframe) +static void hdmi_reg_infoframes(struct hdmi_context *hdata) { - u32 hdr_sum; - u8 chksum; - u8 ar; + union hdmi_infoframe frm; + u8 buf[25]; + int ret; if (hdata->dvi_mode) { - hdmi_reg_writeb(hdata, HDMI_VSI_CON, - HDMI_VSI_CON_DO_NOT_TRANSMIT); hdmi_reg_writeb(hdata, HDMI_AVI_CON, HDMI_AVI_CON_DO_NOT_TRANSMIT); + hdmi_reg_writeb(hdata, HDMI_VSI_CON, + HDMI_VSI_CON_DO_NOT_TRANSMIT); hdmi_reg_writeb(hdata, HDMI_AUI_CON, HDMI_AUI_CON_NO_TRAN); return; } - switch (infoframe->any.type) { - case HDMI_INFOFRAME_TYPE_AVI: + ret = drm_hdmi_avi_infoframe_from_display_mode(&frm.avi, + &hdata->current_mode); + if (!ret) + ret = hdmi_avi_infoframe_pack(&frm.avi, buf, sizeof(buf)); + if (ret > 0) { hdmi_reg_writeb(hdata, HDMI_AVI_CON, HDMI_AVI_CON_EVERY_VSYNC); - hdmi_reg_writeb(hdata, HDMI_AVI_HEADER0, infoframe->any.type); - hdmi_reg_writeb(hdata, HDMI_AVI_HEADER1, - infoframe->any.version); - hdmi_reg_writeb(hdata, HDMI_AVI_HEADER2, infoframe->any.length); - hdr_sum = infoframe->any.type + infoframe->any.version + - infoframe->any.length; - - /* Output format zero hardcoded ,RGB YBCR selection */ - hdmi_reg_writeb(hdata, HDMI_AVI_BYTE(1), 0 << 5 | - AVI_ACTIVE_FORMAT_VALID | - AVI_UNDERSCANNED_DISPLAY_VALID); - - /* - * Set the aspect ratio as per the mode, mentioned in - * Table 9 AVI InfoFrame Data Byte 2 of CEA-861-D Standard - */ - ar = hdata->current_mode.picture_aspect_ratio; - switch (ar) { - case HDMI_PICTURE_ASPECT_4_3: - ar |= AVI_4_3_CENTER_RATIO; - break; - case HDMI_PICTURE_ASPECT_16_9: - ar |= AVI_16_9_CENTER_RATIO; - break; - case HDMI_PICTURE_ASPECT_NONE: - default: - ar |= AVI_SAME_AS_PIC_ASPECT_RATIO; - break; - } - hdmi_reg_writeb(hdata, HDMI_AVI_BYTE(2), ar); + hdmi_reg_write_buf(hdata, HDMI_AVI_HEADER0, buf, ret); + } else { + DRM_INFO("%s: invalid AVI infoframe (%d)\n", __func__, ret); + } - hdmi_reg_writeb(hdata, HDMI_AVI_BYTE(4), hdata->cea_video_id); + ret = drm_hdmi_vendor_infoframe_from_display_mode(&frm.vendor.hdmi, + &hdata->current_mode); + if (!ret) + ret = hdmi_vendor_infoframe_pack(&frm.vendor.hdmi, buf, + sizeof(buf)); + if (ret > 0) { + hdmi_reg_writeb(hdata, HDMI_VSI_CON, HDMI_VSI_CON_EVERY_VSYNC); + hdmi_reg_write_buf(hdata, HDMI_VSI_HEADER0, buf, 3); + hdmi_reg_write_buf(hdata, HDMI_VSI_DATA(0), buf + 3, ret - 3); + } - chksum = hdmi_chksum(hdata, HDMI_AVI_BYTE(1), - infoframe->any.length, hdr_sum); - DRM_DEBUG_KMS("AVI checksum = 0x%x\n", chksum); - hdmi_reg_writeb(hdata, HDMI_AVI_CHECK_SUM, chksum); - break; - case HDMI_INFOFRAME_TYPE_AUDIO: - hdmi_reg_writeb(hdata, HDMI_AUI_CON, 0x02); - hdmi_reg_writeb(hdata, HDMI_AUI_HEADER0, infoframe->any.type); - hdmi_reg_writeb(hdata, HDMI_AUI_HEADER1, - infoframe->any.version); - hdmi_reg_writeb(hdata, HDMI_AUI_HEADER2, infoframe->any.length); - hdr_sum = infoframe->any.type + infoframe->any.version + - infoframe->any.length; - chksum = hdmi_chksum(hdata, HDMI_AUI_BYTE(1), - infoframe->any.length, hdr_sum); - DRM_DEBUG_KMS("AUI checksum = 0x%x\n", chksum); - hdmi_reg_writeb(hdata, HDMI_AUI_CHECK_SUM, chksum); - break; - default: - break; + ret = hdmi_audio_infoframe_init(&frm.audio); + if (!ret) { + frm.audio.channels = 2; + ret = hdmi_audio_infoframe_pack(&frm.audio, buf, sizeof(buf)); + } + if (ret > 0) { + hdmi_reg_writeb(hdata, HDMI_AUI_CON, HDMI_AUI_CON_EVERY_VSYNC); + hdmi_reg_write_buf(hdata, HDMI_AUI_HEADER0, buf, ret); } } @@ -962,7 +924,15 @@ static int hdmi_create_connector(struct drm_encoder *encoder) drm_connector_register(connector); drm_mode_connector_attach_encoder(connector, encoder); - return 0; + if (hdata->bridge) { + encoder->bridge = hdata->bridge; + hdata->bridge->encoder = encoder; + ret = drm_bridge_attach(encoder, hdata->bridge, NULL); + if (ret) + DRM_ERROR("Failed to attach bridge\n"); + } + + return ret; } static bool hdmi_mode_fixup(struct drm_encoder *encoder, @@ -1127,8 +1097,6 @@ static void hdmi_start(struct hdmi_context *hdata, bool start) static void hdmi_conf_init(struct hdmi_context *hdata) { - union hdmi_infoframe infoframe; - /* disable HPD interrupts from HDMI IP block, use GPIO instead */ hdmi_reg_writemask(hdata, HDMI_INTC_CON, 0, HDMI_INTC_EN_GLOBAL | HDMI_INTC_EN_HPD_PLUG | HDMI_INTC_EN_HPD_UNPLUG); @@ -1164,15 +1132,7 @@ static void hdmi_conf_init(struct hdmi_context *hdata) hdmi_reg_writeb(hdata, HDMI_V13_AUI_CON, 0x02); hdmi_reg_writeb(hdata, HDMI_V13_ACR_CON, 0x04); } else { - infoframe.any.type = HDMI_INFOFRAME_TYPE_AVI; - infoframe.any.version = HDMI_AVI_VERSION; - infoframe.any.length = HDMI_AVI_LENGTH; - hdmi_reg_infoframe(hdata, &infoframe); - - infoframe.any.type = HDMI_INFOFRAME_TYPE_AUDIO; - infoframe.any.version = HDMI_AUI_VERSION; - infoframe.any.length = HDMI_AUI_LENGTH; - hdmi_reg_infoframe(hdata, &infoframe); + hdmi_reg_infoframes(hdata); /* enable AVI packet every vsync, fixes purple line problem */ hdmi_reg_writemask(hdata, HDMI_CON_1, 2, 3 << 5); @@ -1458,7 +1418,6 @@ static void hdmi_mode_set(struct drm_encoder *encoder, "INTERLACED" : "PROGRESSIVE"); drm_mode_copy(&hdata->current_mode, m); - hdata->cea_video_id = drm_match_cea_mode(mode); } static void hdmi_set_refclk(struct hdmi_context *hdata, bool on) @@ -1642,6 +1601,31 @@ static void hdmiphy_clk_enable(struct exynos_drm_clk *clk, bool enable) hdmiphy_disable(hdata); } +static int hdmi_bridge_init(struct hdmi_context *hdata) +{ + struct device *dev = hdata->dev; + struct device_node *ep, *np; + + ep = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1); + if (!ep) + return 0; + + np = of_graph_get_remote_port_parent(ep); + of_node_put(ep); + if (!np) { + DRM_ERROR("failed to get remote port parent"); + return -EINVAL; + } + + hdata->bridge = of_drm_find_bridge(np); + of_node_put(np); + + if (!hdata->bridge) + return -EPROBE_DEFER; + + return 0; +} + static int hdmi_resources_init(struct hdmi_context *hdata) { struct device *dev = hdata->dev; @@ -1681,17 +1665,18 @@ static int hdmi_resources_init(struct hdmi_context *hdata) hdata->reg_hdmi_en = devm_regulator_get_optional(dev, "hdmi-en"); - if (PTR_ERR(hdata->reg_hdmi_en) == -ENODEV) - return 0; - - if (IS_ERR(hdata->reg_hdmi_en)) - return PTR_ERR(hdata->reg_hdmi_en); + if (PTR_ERR(hdata->reg_hdmi_en) != -ENODEV) { + if (IS_ERR(hdata->reg_hdmi_en)) + return PTR_ERR(hdata->reg_hdmi_en); - ret = regulator_enable(hdata->reg_hdmi_en); - if (ret) - DRM_ERROR("failed to enable hdmi-en regulator\n"); + ret = regulator_enable(hdata->reg_hdmi_en); + if (ret) { + DRM_ERROR("failed to enable hdmi-en regulator\n"); + return ret; + } + } - return ret; + return hdmi_bridge_init(hdata); } static struct of_device_id hdmi_match_types[] = { |