drm/i915: Update VBT data structures to have MIPI block enhancements

MIPI Block #52 which provides configuration details for the MIPI panel
including dphy settings as per panel and tcon specs

Block #53 gives information on panel enable sequences

v2: Address review comemnts from Jani
    - Move panel ids from intel_dsi.h to intel_bios.h
    - bdb_mipi_config structure improvements for cleaner code
    - Adding units for the pps delays, all in ms
    - change data structure to be more cleaner and simple

v3: Corrected the unit for pps delays as 100us

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 86b95ca..4867f4c 100644 (file)
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -599,14 +599,14 @@ parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
 {
        struct bdb_mipi *mipi;
 
-       mipi = find_section(bdb, BDB_MIPI);
+       mipi = find_section(bdb, BDB_MIPI_CONFIG);
        if (!mipi) {
                DRM_DEBUG_KMS("No MIPI BDB found");
                return;
        }
 
        /* XXX: add more info */
-       dev_priv->vbt.dsi.panel_id = mipi->panel_id;
+       dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
 }
 
 static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,

diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index 282de5e..83b7629 100644 (file)
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -104,7 +104,8 @@ struct vbios_data {
 #define BDB_LVDS_LFP_DATA       42
 #define BDB_LVDS_BACKLIGHT      43
 #define BDB_LVDS_POWER          44
-#define BDB_MIPI                50
+#define BDB_MIPI_CONFIG                 52
+#define BDB_MIPI_SEQUENCE       53
 #define BDB_SKIP               254 /* VBIOS private block, ignore */
 
 struct bdb_general_features {
@@ -711,44 +712,159 @@ int intel_parse_bios(struct drm_device *dev);
 #define DVO_PORT_DPD   9
 #define DVO_PORT_DPA   10
 
-/* MIPI DSI panel info */
-struct bdb_mipi {
-       u16 panel_id;
-       u16 bridge_revision;
-
-       /* General params */
-       u32 dithering:1;
-       u32 bpp_pixel_format:1;
-       u32 rsvd1:1;
-       u32 dphy_valid:1;
-       u32 resvd2:28;
+/* Block 52 contains MIPI Panel info
+ * 6 such enteries will there. Index into correct
+ * entery is based on the panel_index in #40 LFP
+ */
+#define MAX_MIPI_CONFIGURATIONS        6
 
-       u16 port_info;
-       u16 rsvd3:2;
-       u16 num_lanes:2;
-       u16 rsvd4:12;
+#define MIPI_DSI_UNDEFINED_PANEL_ID    0
+#define MIPI_DSI_GENERIC_PANEL_ID      1
 
-       /* DSI config */
-       u16 virt_ch_num:2;
-       u16 vtm:2;
-       u16 rsvd5:12;
+struct mipi_config {
+       u16 panel_id;
 
-       u32 dsi_clock;
+       /* General Params */
+       u32 enable_dithering:1;
+       u32 rsvd1:1;
+       u32 is_bridge:1;
+
+       u32 panel_arch_type:2;
+       u32 is_cmd_mode:1;
+
+#define NON_BURST_SYNC_PULSE   0x1
+#define NON_BURST_SYNC_EVENTS  0x2
+#define BURST_MODE             0x3
+       u32 video_transfer_mode:2;
+
+       u32 cabc_supported:1;
+       u32 pwm_blc:1;
+
+       /* Bit 13:10 */
+#define PIXEL_FORMAT_RGB565                    0x1
+#define PIXEL_FORMAT_RGB666                    0x2
+#define PIXEL_FORMAT_RGB666_LOOSELY_PACKED     0x3
+#define PIXEL_FORMAT_RGB888                    0x4
+       u32 videomode_color_format:4;
+
+       /* Bit 15:14 */
+#define ENABLE_ROTATION_0      0x0
+#define ENABLE_ROTATION_90     0x1
+#define ENABLE_ROTATION_180    0x2
+#define ENABLE_ROTATION_270    0x3
+       u32 rotation:2;
+       u32 bta_enabled:1;
+       u32 rsvd2:15;
+
+       /* 2 byte Port Description */
+#define DUAL_LINK_NOT_SUPPORTED        0
+#define DUAL_LINK_FRONT_BACK   1
+#define DUAL_LINK_PIXEL_ALT    2
+       u16 dual_link:2;
+       u16 lane_cnt:2;
+       u16 rsvd3:12;
+
+       u16 rsvd4;
+
+       u8 rsvd5[5];
+       u32 dsi_ddr_clk;
        u32 bridge_ref_clk;
-       u16 rsvd_pwr;
 
-       /* Dphy Params */
-       u32 prepare_cnt:5;
-       u32 rsvd6:3;
+#define  BYTE_CLK_SEL_20MHZ            0
+#define  BYTE_CLK_SEL_10MHZ            1
+#define  BYTE_CLK_SEL_5MHZ             2
+       u8 byte_clk_sel:2;
+
+       u8 rsvd6:6;
+
+       /* DPHY Flags */
+       u16 dphy_param_valid:1;
+       u16 eot_pkt_disabled:1;
+       u16 enable_clk_stop:1;
+       u16 rsvd7:13;
+
+       u32 hs_tx_timeout;
+       u32 lp_rx_timeout;
+       u32 turn_around_timeout;
+       u32 device_reset_timer;
+       u32 master_init_timer;
+       u32 dbi_bw_timer;
+       u32 lp_byte_clk_val;
+
+       /*  4 byte Dphy Params */
+       u32 prepare_cnt:6;
+       u32 rsvd8:2;
        u32 clk_zero_cnt:8;
        u32 trail_cnt:5;
-       u32 rsvd7:3;
+       u32 rsvd9:3;
        u32 exit_zero_cnt:6;
-       u32 rsvd8:2;
+       u32 rsvd10:2;
 
-       u32 hl_switch_cnt;
-       u32 lp_byte_clk;
        u32 clk_lane_switch_cnt;
+       u32 hl_switch_cnt;
+
+       u32 rsvd11[6];
+
+       /* timings based on dphy spec */
+       u8 tclk_miss;
+       u8 tclk_post;
+       u8 rsvd12;
+       u8 tclk_pre;
+       u8 tclk_prepare;
+       u8 tclk_settle;
+       u8 tclk_term_enable;
+       u8 tclk_trail;
+       u16 tclk_prepare_clkzero;
+       u8 rsvd13;
+       u8 td_term_enable;
+       u8 teot;
+       u8 ths_exit;
+       u8 ths_prepare;
+       u16 ths_prepare_hszero;
+       u8 rsvd14;
+       u8 ths_settle;
+       u8 ths_skip;
+       u8 ths_trail;
+       u8 tinit;
+       u8 tlpx;
+       u8 rsvd15[3];
+
+       /* GPIOs */
+       u8 panel_enable;
+       u8 bl_enable;
+       u8 pwm_enable;
+       u8 reset_r_n;
+       u8 pwr_down_r;
+       u8 stdby_r_n;
+
 } __packed;
 
+/* Block 52 contains MIPI configuration block
+ * 6 * bdb_mipi_config, followed by 6 pps data
+ * block below
+ *
+ * all delays has a unit of 100us
+ */
+struct mipi_pps_data {
+       u16 panel_on_delay;
+       u16 bl_enable_delay;
+       u16 bl_disable_delay;
+       u16 panel_off_delay;
+       u16 panel_power_cycle_delay;
+};
+
+struct bdb_mipi_config {
+       struct mipi_config config[MAX_MIPI_CONFIGURATIONS];
+       struct mipi_pps_data pps[MAX_MIPI_CONFIGURATIONS];
+};
+
+/* Block 53 contains MIPI sequences as needed by the panel
+ * for enabling it. This block can be variable in size and
+ * can be maximum of 6 blocks
+ */
+struct bdb_mipi_sequence {
+       u8 version;
+       u8 data[0];
+};
+
 #endif /* _I830_BIOS_H_ */