From: Edmund Dea edmund.j.dea@intel.com
Added test pattern generator function. Enable this at compile time to test if mipi is working. mipi->hdmi section
Signed-off-by: Edmund Dea edmund.j.dea@intel.com Reviewed-by: Bob Paauwe bob.j.paauwe@intel.com --- drivers/gpu/drm/kmb/kmb_dsi.c | 31 +++++++++++++++++++++++++++++++ drivers/gpu/drm/kmb/kmb_dsi.h | 7 +++++++ drivers/gpu/drm/kmb/kmb_regs.h | 11 +++++++++++ 3 files changed, 49 insertions(+)
diff --git a/drivers/gpu/drm/kmb/kmb_dsi.c b/drivers/gpu/drm/kmb/kmb_dsi.c index 01fa378..960ecfa 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.c +++ b/drivers/gpu/drm/kmb/kmb_dsi.c @@ -744,6 +744,32 @@ static void mipi_tx_ctrl_cfg(struct kmb_drm_private *dev_p, u8 fg_id, kmb_write_mipi(dev_p, MIPI_TXm_HS_CTRL(ctrl_no), ctrl); }
+#ifdef MIPI_TX_TEST_PATTERN_GENERATION +static void mipi_tx_hs_tp_gen(struct kmb_drm_private *dev_p, int vc, + int tp_sel, u32 stripe_width, u32 color0, u32 color1) +{ + u32 ctrl_no = MIPI_CTRL6; + + /* Select test pattern mode on the virtual channel */ + kmb_write_mipi(dev_p, MIPI_TXm_HS_TEST_PAT_CTRL(ctrl_no), + TP_SEL_VCm(vc, tp_sel)); + + if (tp_sel == MIPI_TX_HS_TP_V_STRIPES || + tp_sel == MIPI_TX_HS_TP_H_STRIPES) { + kmb_write_mipi(dev_p, MIPI_TXm_HS_TEST_PAT_CTRL(ctrl_no), + TP_STRIPE_WIDTH(stripe_width)); + } + + /* Configure test pattern colors */ + kmb_write_mipi(dev_p, MIPI_TX_HS_TEST_PAT_COLOR0, color0); + kmb_write_mipi(dev_p, MIPI_TX_HS_TEST_PAT_COLOR1, color1); + + /* Enable test pattern generation on the virtual channel */ + kmb_write_mipi(dev_p, MIPI_TXm_HS_TEST_PAT_CTRL(ctrl_no), + TP_EN_VCm(vc)); +} +#endif + static u32 mipi_tx_init_cntrl(struct kmb_drm_private *dev_p, struct mipi_ctrl_cfg *ctrl_cfg) { @@ -807,6 +833,11 @@ static u32 mipi_tx_init_cntrl(struct kmb_drm_private *dev_p, /*Multi-Channel FIFO Configuration*/ mipi_tx_multichannel_fifo_cfg(dev_p, ctrl_cfg->active_lanes, frame_id);
+#ifdef MIPI_TX_TEST_PATTERN_GENERATION + mipi_tx_hs_tp_gen(dev_p, 0, MIPI_TX_HS_TP_WHOLE_FRAME_COLOR0, 0, + 0xffffffff, 0); +#endif + /*Frame Generator Enable */ mipi_tx_ctrl_cfg(dev_p, frame_id, ctrl_cfg); return ret; diff --git a/drivers/gpu/drm/kmb/kmb_dsi.h b/drivers/gpu/drm/kmb/kmb_dsi.h index 811f3b8..3de68de 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.h +++ b/drivers/gpu/drm/kmb/kmb_dsi.h @@ -180,6 +180,13 @@ enum mipi_dsi_data_type { DSI_LP_DT_RESERVED_3F = 0x3f };
+enum mipi_tx_hs_tp_sel { + MIPI_TX_HS_TP_WHOLE_FRAME_COLOR0 = 0, + MIPI_TX_HS_TP_WHOLE_FRAME_COLOR1, + MIPI_TX_HS_TP_V_STRIPES, + MIPI_TX_HS_TP_H_STRIPES, +}; + enum dphy_mode { MIPI_DPHY_SLAVE = 0, MIPI_DPHY_MASTER diff --git a/drivers/gpu/drm/kmb/kmb_regs.h b/drivers/gpu/drm/kmb/kmb_regs.h index a3f1a3a..207a161 100644 --- a/drivers/gpu/drm/kmb/kmb_regs.h +++ b/drivers/gpu/drm/kmb/kmb_regs.h @@ -625,6 +625,17 @@ MIPI_TX_HS_IRQ_CLEAR \ + HS_OFFSET(M), val)
+/* MIPI Test Pattern Generation */ +#define MIPI_TX_HS_TEST_PAT_CTRL (0x230) +#define MIPI_TXm_HS_TEST_PAT_CTRL(M) \ + (MIPI_TX_HS_TEST_PAT_CTRL + HS_OFFSET(M)) +#define TP_EN_VCm(M) ((M) * 0x04) +#define TP_SEL_VCm(M, N) \ + (N << (((M) * 0x04) + 1)) +#define TP_STRIPE_WIDTH(M) ((M) << 16) +#define MIPI_TX_HS_TEST_PAT_COLOR0 (0x234) +#define MIPI_TX_HS_TEST_PAT_COLOR1 (0x238) + /* D-PHY regs */ #define DPHY_ENABLE (0x100) #define DPHY_INIT_CTRL0 (0x104)