diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/dsi.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dsi.c | 126 |
1 files changed, 65 insertions, 61 deletions
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index ed970f622..f0a138ef6 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", }, { }, }; |