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path: root/drivers/gpu/drm/tegra/dsi.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/dsi.c')
-rw-r--r--drivers/gpu/drm/tegra/dsi.c126
1 files changed, 65 insertions, 61 deletions
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index ed970f622903..f0a138ef68ce 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -119,6 +119,16 @@ static int tegra_dsi_show_regs(struct seq_file *s, void *data)
{
struct drm_info_node *node = s->private;
struct tegra_dsi *dsi = node->info_ent->data;
+ struct drm_crtc *crtc = dsi->output.encoder.crtc;
+ struct drm_device *drm = node->minor->dev;
+ int err = 0;
+
+ drm_modeset_lock_all(drm);
+
+ if (!crtc || !crtc->state->active) {
+ err = -EBUSY;
+ goto unlock;
+ }
#define DUMP_REG(name) \
seq_printf(s, "%-32s %#05x %08x\n", #name, name, \
@@ -208,7 +218,9 @@ static int tegra_dsi_show_regs(struct seq_file *s, void *data)
#undef DUMP_REG
- return 0;
+unlock:
+ drm_modeset_unlock_all(drm);
+ return err;
}
static struct drm_info_list debugfs_files[] = {
@@ -548,14 +560,19 @@ static void tegra_dsi_configure(struct tegra_dsi *dsi, unsigned int pipe,
/* horizontal sync width */
hsw = (mode->hsync_end - mode->hsync_start) * mul / div;
- hsw -= 10;
/* horizontal back porch */
hbp = (mode->htotal - mode->hsync_end) * mul / div;
- hbp -= 14;
+
+ if ((dsi->flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) == 0)
+ hbp += hsw;
/* horizontal front porch */
hfp = (mode->hsync_start - mode->hdisplay) * mul / div;
+
+ /* subtract packet overhead */
+ hsw -= 10;
+ hbp -= 14;
hfp -= 8;
tegra_dsi_writel(dsi, hsw << 16 | 0, DSI_PKT_LEN_0_1);
@@ -726,10 +743,6 @@ static void tegra_dsi_soft_reset(struct tegra_dsi *dsi)
tegra_dsi_soft_reset(dsi->slave);
}
-static void tegra_dsi_connector_dpms(struct drm_connector *connector, int mode)
-{
-}
-
static void tegra_dsi_connector_reset(struct drm_connector *connector)
{
struct tegra_dsi_state *state;
@@ -756,7 +769,7 @@ tegra_dsi_connector_duplicate_state(struct drm_connector *connector)
}
static const struct drm_connector_funcs tegra_dsi_connector_funcs = {
- .dpms = tegra_dsi_connector_dpms,
+ .dpms = drm_atomic_helper_connector_dpms,
.reset = tegra_dsi_connector_reset,
.detect = tegra_output_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
@@ -782,22 +795,48 @@ static const struct drm_encoder_funcs tegra_dsi_encoder_funcs = {
.destroy = tegra_output_encoder_destroy,
};
-static void tegra_dsi_encoder_dpms(struct drm_encoder *encoder, int mode)
+static void tegra_dsi_encoder_disable(struct drm_encoder *encoder)
{
-}
+ struct tegra_output *output = encoder_to_output(encoder);
+ struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
+ struct tegra_dsi *dsi = to_dsi(output);
+ u32 value;
+ int err;
-static void tegra_dsi_encoder_prepare(struct drm_encoder *encoder)
-{
-}
+ if (output->panel)
+ drm_panel_disable(output->panel);
-static void tegra_dsi_encoder_commit(struct drm_encoder *encoder)
-{
+ tegra_dsi_video_disable(dsi);
+
+ /*
+ * The following accesses registers of the display controller, so make
+ * sure it's only executed when the output is attached to one.
+ */
+ if (dc) {
+ value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
+ value &= ~DSI_ENABLE;
+ tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
+
+ tegra_dc_commit(dc);
+ }
+
+ err = tegra_dsi_wait_idle(dsi, 100);
+ if (err < 0)
+ dev_dbg(dsi->dev, "failed to idle DSI: %d\n", err);
+
+ tegra_dsi_soft_reset(dsi);
+
+ if (output->panel)
+ drm_panel_unprepare(output->panel);
+
+ tegra_dsi_disable(dsi);
+
+ return;
}
-static void tegra_dsi_encoder_mode_set(struct drm_encoder *encoder,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted)
+static void tegra_dsi_encoder_enable(struct drm_encoder *encoder)
{
+ struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
struct tegra_output *output = encoder_to_output(encoder);
struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
struct tegra_dsi *dsi = to_dsi(output);
@@ -835,45 +874,6 @@ static void tegra_dsi_encoder_mode_set(struct drm_encoder *encoder,
return;
}
-static void tegra_dsi_encoder_disable(struct drm_encoder *encoder)
-{
- struct tegra_output *output = encoder_to_output(encoder);
- struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
- struct tegra_dsi *dsi = to_dsi(output);
- u32 value;
- int err;
-
- if (output->panel)
- drm_panel_disable(output->panel);
-
- tegra_dsi_video_disable(dsi);
-
- /*
- * The following accesses registers of the display controller, so make
- * sure it's only executed when the output is attached to one.
- */
- if (dc) {
- value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
- value &= ~DSI_ENABLE;
- tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
-
- tegra_dc_commit(dc);
- }
-
- err = tegra_dsi_wait_idle(dsi, 100);
- if (err < 0)
- dev_dbg(dsi->dev, "failed to idle DSI: %d\n", err);
-
- tegra_dsi_soft_reset(dsi);
-
- if (output->panel)
- drm_panel_unprepare(output->panel);
-
- tegra_dsi_disable(dsi);
-
- return;
-}
-
static int
tegra_dsi_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
@@ -956,11 +956,8 @@ tegra_dsi_encoder_atomic_check(struct drm_encoder *encoder,
}
static const struct drm_encoder_helper_funcs tegra_dsi_encoder_helper_funcs = {
- .dpms = tegra_dsi_encoder_dpms,
- .prepare = tegra_dsi_encoder_prepare,
- .commit = tegra_dsi_encoder_commit,
- .mode_set = tegra_dsi_encoder_mode_set,
.disable = tegra_dsi_encoder_disable,
+ .enable = tegra_dsi_encoder_enable,
.atomic_check = tegra_dsi_encoder_atomic_check,
};
@@ -992,6 +989,10 @@ static int tegra_dsi_pad_calibrate(struct tegra_dsi *dsi)
DSI_PAD_OUT_CLK(0x0);
tegra_dsi_writel(dsi, value, DSI_PAD_CONTROL_2);
+ value = DSI_PAD_PREEMP_PD_CLK(0x3) | DSI_PAD_PREEMP_PU_CLK(0x3) |
+ DSI_PAD_PREEMP_PD(0x03) | DSI_PAD_PREEMP_PU(0x3);
+ tegra_dsi_writel(dsi, value, DSI_PAD_CONTROL_3);
+
return tegra_mipi_calibrate(dsi->mipi);
}
@@ -1621,6 +1622,9 @@ static int tegra_dsi_remove(struct platform_device *pdev)
}
static const struct of_device_id tegra_dsi_of_match[] = {
+ { .compatible = "nvidia,tegra210-dsi", },
+ { .compatible = "nvidia,tegra132-dsi", },
+ { .compatible = "nvidia,tegra124-dsi", },
{ .compatible = "nvidia,tegra114-dsi", },
{ },
};