From: Edmund Dea <edmund.j....@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....@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paa...@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 8ab4de7..47ec2ab 100644
--- a/drivers/gpu/drm/kmb/kmb_dsi.c
+++ b/drivers/gpu/drm/kmb/kmb_dsi.c
@@ -764,6 +764,32 @@ 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)
{
@@ -827,6 +853,11 @@ 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 e85625b..ef526b4 100644
--- a/drivers/gpu/drm/kmb/kmb_dsi.h
+++ b/drivers/gpu/drm/kmb/kmb_dsi.h
@@ -200,6 +200,13 @@ 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 20b331d..2377439 100644
--- a/drivers/gpu/drm/kmb/kmb_regs.h
+++ b/drivers/gpu/drm/kmb/kmb_regs.h
@@ -645,6 +645,17 @@
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)
--
2.7.4
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