X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Ftegra%2Fdc.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Ftegra%2Fdc.c;h=e9f24a85a1038701cc819f38e9b0318260e6679d;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=a287e4fec8653d91e55bb2765e2379984b65bef5;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git diff --git a/kernel/drivers/gpu/drm/tegra/dc.c b/kernel/drivers/gpu/drm/tegra/dc.c index a287e4fec..e9f24a85a 100644 --- a/kernel/drivers/gpu/drm/tegra/dc.c +++ b/kernel/drivers/gpu/drm/tegra/dc.c @@ -76,6 +76,14 @@ to_tegra_plane_state(struct drm_plane_state *state) return NULL; } +static void tegra_dc_stats_reset(struct tegra_dc_stats *stats) +{ + stats->frames = 0; + stats->vblank = 0; + stats->underflow = 0; + stats->overflow = 0; +} + /* * Reads the active copy of a register. This takes the dc->lock spinlock to * prevent races with the VBLANK processing which also needs access to the @@ -472,14 +480,12 @@ static const struct drm_plane_funcs tegra_primary_plane_funcs = { }; static int tegra_plane_prepare_fb(struct drm_plane *plane, - struct drm_framebuffer *fb, const struct drm_plane_state *new_state) { return 0; } static void tegra_plane_cleanup_fb(struct drm_plane *plane, - struct drm_framebuffer *fb, const struct drm_plane_state *old_fb) { } @@ -759,7 +765,6 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane, /* position the cursor */ value = (state->crtc_y & 0x3fff) << 16 | (state->crtc_x & 0x3fff); tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION); - } static void tegra_cursor_atomic_disable(struct drm_plane *plane, @@ -809,9 +814,11 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm, return ERR_PTR(-ENOMEM); /* - * We'll treat the cursor as an overlay plane with index 6 here so - * that the update and activation request bits in DC_CMD_STATE_CONTROL - * match up. + * This index is kind of fake. The cursor isn't a regular plane, but + * its update and activation request bits in DC_CMD_STATE_CONTROL do + * use the same programming. Setting this fake index here allows the + * code in tegra_add_plane_state() to do the right thing without the + * need to special-casing the cursor plane. */ plane->index = 6; @@ -1015,6 +1022,8 @@ static void tegra_crtc_reset(struct drm_crtc *crtc) crtc->state = &state->base; crtc->state->crtc = crtc; } + + drm_crtc_vblank_reset(crtc); } static struct drm_crtc_state * @@ -1052,90 +1061,6 @@ static const struct drm_crtc_funcs tegra_crtc_funcs = { .atomic_destroy_state = tegra_crtc_atomic_destroy_state, }; -static void tegra_dc_stop(struct tegra_dc *dc) -{ - u32 value; - - /* stop the display controller */ - value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND); - value &= ~DISP_CTRL_MODE_MASK; - tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND); - - tegra_dc_commit(dc); -} - -static bool tegra_dc_idle(struct tegra_dc *dc) -{ - u32 value; - - value = tegra_dc_readl_active(dc, DC_CMD_DISPLAY_COMMAND); - - return (value & DISP_CTRL_MODE_MASK) == 0; -} - -static int tegra_dc_wait_idle(struct tegra_dc *dc, unsigned long timeout) -{ - timeout = jiffies + msecs_to_jiffies(timeout); - - while (time_before(jiffies, timeout)) { - if (tegra_dc_idle(dc)) - return 0; - - usleep_range(1000, 2000); - } - - dev_dbg(dc->dev, "timeout waiting for DC to become idle\n"); - return -ETIMEDOUT; -} - -static void tegra_crtc_disable(struct drm_crtc *crtc) -{ - struct tegra_dc *dc = to_tegra_dc(crtc); - u32 value; - - if (!tegra_dc_idle(dc)) { - tegra_dc_stop(dc); - - /* - * Ignore the return value, there isn't anything useful to do - * in case this fails. - */ - tegra_dc_wait_idle(dc, 100); - } - - /* - * This should really be part of the RGB encoder driver, but clearing - * these bits has the side-effect of stopping the display controller. - * When that happens no VBLANK interrupts will be raised. At the same - * time the encoder is disabled before the display controller, so the - * above code is always going to timeout waiting for the controller - * to go idle. - * - * Given the close coupling between the RGB encoder and the display - * controller doing it here is still kind of okay. None of the other - * encoder drivers require these bits to be cleared. - * - * XXX: Perhaps given that the display controller is switched off at - * this point anyway maybe clearing these bits isn't even useful for - * the RGB encoder? - */ - if (dc->rgb) { - value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL); - value &= ~(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE | - PW4_ENABLE | PM0_ENABLE | PM1_ENABLE); - tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL); - } - - drm_crtc_vblank_off(crtc); -} - -static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted) -{ - return true; -} - static int tegra_dc_set_timings(struct tegra_dc *dc, struct drm_display_mode *mode) { @@ -1229,7 +1154,85 @@ static void tegra_dc_commit_state(struct tegra_dc *dc, tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL); } -static void tegra_crtc_mode_set_nofb(struct drm_crtc *crtc) +static void tegra_dc_stop(struct tegra_dc *dc) +{ + u32 value; + + /* stop the display controller */ + value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND); + value &= ~DISP_CTRL_MODE_MASK; + tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND); + + tegra_dc_commit(dc); +} + +static bool tegra_dc_idle(struct tegra_dc *dc) +{ + u32 value; + + value = tegra_dc_readl_active(dc, DC_CMD_DISPLAY_COMMAND); + + return (value & DISP_CTRL_MODE_MASK) == 0; +} + +static int tegra_dc_wait_idle(struct tegra_dc *dc, unsigned long timeout) +{ + timeout = jiffies + msecs_to_jiffies(timeout); + + while (time_before(jiffies, timeout)) { + if (tegra_dc_idle(dc)) + return 0; + + usleep_range(1000, 2000); + } + + dev_dbg(dc->dev, "timeout waiting for DC to become idle\n"); + return -ETIMEDOUT; +} + +static void tegra_crtc_disable(struct drm_crtc *crtc) +{ + struct tegra_dc *dc = to_tegra_dc(crtc); + u32 value; + + if (!tegra_dc_idle(dc)) { + tegra_dc_stop(dc); + + /* + * Ignore the return value, there isn't anything useful to do + * in case this fails. + */ + tegra_dc_wait_idle(dc, 100); + } + + /* + * This should really be part of the RGB encoder driver, but clearing + * these bits has the side-effect of stopping the display controller. + * When that happens no VBLANK interrupts will be raised. At the same + * time the encoder is disabled before the display controller, so the + * above code is always going to timeout waiting for the controller + * to go idle. + * + * Given the close coupling between the RGB encoder and the display + * controller doing it here is still kind of okay. None of the other + * encoder drivers require these bits to be cleared. + * + * XXX: Perhaps given that the display controller is switched off at + * this point anyway maybe clearing these bits isn't even useful for + * the RGB encoder? + */ + if (dc->rgb) { + value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL); + value &= ~(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE | + PW4_ENABLE | PM0_ENABLE | PM1_ENABLE); + tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL); + } + + tegra_dc_stats_reset(&dc->stats); + drm_crtc_vblank_off(crtc); +} + +static void tegra_crtc_enable(struct drm_crtc *crtc) { struct drm_display_mode *mode = &crtc->state->adjusted_mode; struct tegra_dc_state *state = to_dc_state(crtc->state); @@ -1259,15 +1262,7 @@ static void tegra_crtc_mode_set_nofb(struct drm_crtc *crtc) tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL); tegra_dc_commit(dc); -} -static void tegra_crtc_prepare(struct drm_crtc *crtc) -{ - drm_crtc_vblank_off(crtc); -} - -static void tegra_crtc_commit(struct drm_crtc *crtc) -{ drm_crtc_vblank_on(crtc); } @@ -1277,7 +1272,8 @@ static int tegra_crtc_atomic_check(struct drm_crtc *crtc, return 0; } -static void tegra_crtc_atomic_begin(struct drm_crtc *crtc) +static void tegra_crtc_atomic_begin(struct drm_crtc *crtc, + struct drm_crtc_state *old_crtc_state) { struct tegra_dc *dc = to_tegra_dc(crtc); @@ -1291,7 +1287,8 @@ static void tegra_crtc_atomic_begin(struct drm_crtc *crtc) } } -static void tegra_crtc_atomic_flush(struct drm_crtc *crtc) +static void tegra_crtc_atomic_flush(struct drm_crtc *crtc, + struct drm_crtc_state *old_crtc_state) { struct tegra_dc_state *state = to_dc_state(crtc->state); struct tegra_dc *dc = to_tegra_dc(crtc); @@ -1302,10 +1299,7 @@ static void tegra_crtc_atomic_flush(struct drm_crtc *crtc) static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs = { .disable = tegra_crtc_disable, - .mode_fixup = tegra_crtc_mode_fixup, - .mode_set_nofb = tegra_crtc_mode_set_nofb, - .prepare = tegra_crtc_prepare, - .commit = tegra_crtc_commit, + .enable = tegra_crtc_enable, .atomic_check = tegra_crtc_atomic_check, .atomic_begin = tegra_crtc_atomic_begin, .atomic_flush = tegra_crtc_atomic_flush, @@ -1323,6 +1317,7 @@ static irqreturn_t tegra_dc_irq(int irq, void *data) /* dev_dbg(dc->dev, "%s(): frame end\n", __func__); */ + dc->stats.frames++; } if (status & VBLANK_INT) { @@ -1331,12 +1326,21 @@ static irqreturn_t tegra_dc_irq(int irq, void *data) */ drm_crtc_handle_vblank(&dc->base); tegra_dc_finish_page_flip(dc); + dc->stats.vblank++; } if (status & (WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT)) { /* dev_dbg(dc->dev, "%s(): underflow\n", __func__); */ + dc->stats.underflow++; + } + + if (status & (WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT)) { + /* + dev_dbg(dc->dev, "%s(): overflow\n", __func__); + */ + dc->stats.overflow++; } return IRQ_HANDLED; @@ -1346,6 +1350,14 @@ static int tegra_dc_show_regs(struct seq_file *s, void *data) { struct drm_info_node *node = s->private; struct tegra_dc *dc = node->info_ent->data; + int err = 0; + + drm_modeset_lock_crtc(&dc->base, NULL); + + if (!dc->base.state->active) { + err = -EBUSY; + goto unlock; + } #define DUMP_REG(name) \ seq_printf(s, "%-40s %#05x %08x\n", #name, name, \ @@ -1566,11 +1578,59 @@ static int tegra_dc_show_regs(struct seq_file *s, void *data) #undef DUMP_REG +unlock: + drm_modeset_unlock_crtc(&dc->base); + return err; +} + +static int tegra_dc_show_crc(struct seq_file *s, void *data) +{ + struct drm_info_node *node = s->private; + struct tegra_dc *dc = node->info_ent->data; + int err = 0; + u32 value; + + drm_modeset_lock_crtc(&dc->base, NULL); + + if (!dc->base.state->active) { + err = -EBUSY; + goto unlock; + } + + value = DC_COM_CRC_CONTROL_ACTIVE_DATA | DC_COM_CRC_CONTROL_ENABLE; + tegra_dc_writel(dc, value, DC_COM_CRC_CONTROL); + tegra_dc_commit(dc); + + drm_crtc_wait_one_vblank(&dc->base); + drm_crtc_wait_one_vblank(&dc->base); + + value = tegra_dc_readl(dc, DC_COM_CRC_CHECKSUM); + seq_printf(s, "%08x\n", value); + + tegra_dc_writel(dc, 0, DC_COM_CRC_CONTROL); + +unlock: + drm_modeset_unlock_crtc(&dc->base); + return err; +} + +static int tegra_dc_show_stats(struct seq_file *s, void *data) +{ + struct drm_info_node *node = s->private; + struct tegra_dc *dc = node->info_ent->data; + + seq_printf(s, "frames: %lu\n", dc->stats.frames); + seq_printf(s, "vblank: %lu\n", dc->stats.vblank); + seq_printf(s, "underflow: %lu\n", dc->stats.underflow); + seq_printf(s, "overflow: %lu\n", dc->stats.overflow); + return 0; } static struct drm_info_list debugfs_files[] = { { "regs", tegra_dc_show_regs, 0, NULL }, + { "crc", tegra_dc_show_crc, 0, NULL }, + { "stats", tegra_dc_show_stats, 0, NULL }, }; static int tegra_dc_debugfs_init(struct tegra_dc *dc, struct drm_minor *minor) @@ -1634,6 +1694,7 @@ static int tegra_dc_debugfs_exit(struct tegra_dc *dc) static int tegra_dc_init(struct host1x_client *client) { struct drm_device *drm = dev_get_drvdata(client->parent); + unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED; struct tegra_dc *dc = host1x_client_to_dc(client); struct tegra_drm *tegra = drm->dev_private; struct drm_plane *primary = NULL; @@ -1641,6 +1702,10 @@ static int tegra_dc_init(struct host1x_client *client) u32 value; int err; + dc->syncpt = host1x_syncpt_request(dc->dev, flags); + if (!dc->syncpt) + dev_warn(dc->dev, "failed to allocate syncpoint\n"); + if (tegra->domain) { err = iommu_attach_device(tegra->domain, dc->dev); if (err < 0) { @@ -1716,7 +1781,8 @@ static int tegra_dc_init(struct host1x_client *client) tegra_dc_writel(dc, value, DC_CMD_CONT_SYNCPT_VSYNC); } - value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | WIN_A_OF_INT; + value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | + WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_TYPE); value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | @@ -1732,15 +1798,19 @@ static int tegra_dc_init(struct host1x_client *client) WINDOW_B_THRESHOLD(1) | WINDOW_C_THRESHOLD(1); tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER); - value = VBLANK_INT | WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT; + value = VBLANK_INT | WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | + WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_ENABLE); - value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT; + value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | + WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT; tegra_dc_writel(dc, value, DC_CMD_INT_MASK); if (dc->soc->supports_border_color) tegra_dc_writel(dc, 0, DC_DISP_BORDER_COLOR); + tegra_dc_stats_reset(&dc->stats); + return 0; cleanup: @@ -1782,6 +1852,8 @@ static int tegra_dc_exit(struct host1x_client *client) dc->domain = NULL; } + host1x_syncpt_free(dc->syncpt); + return 0; } @@ -1826,8 +1898,20 @@ static const struct tegra_dc_soc_info tegra124_dc_soc_info = { .has_powergate = true, }; +static const struct tegra_dc_soc_info tegra210_dc_soc_info = { + .supports_border_color = false, + .supports_interlacing = true, + .supports_cursor = true, + .supports_block_linear = true, + .pitch_align = 64, + .has_powergate = true, +}; + static const struct of_device_id tegra_dc_of_match[] = { { + .compatible = "nvidia,tegra210-dc", + .data = &tegra210_dc_soc_info, + }, { .compatible = "nvidia,tegra124-dc", .data = &tegra124_dc_soc_info, }, { @@ -1882,7 +1966,6 @@ static int tegra_dc_parse_dt(struct tegra_dc *dc) static int tegra_dc_probe(struct platform_device *pdev) { - unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED; const struct of_device_id *id; struct resource *regs; struct tegra_dc *dc; @@ -1974,10 +2057,6 @@ static int tegra_dc_probe(struct platform_device *pdev) return err; } - dc->syncpt = host1x_syncpt_request(&pdev->dev, flags); - if (!dc->syncpt) - dev_warn(&pdev->dev, "failed to allocate syncpoint\n"); - platform_set_drvdata(pdev, dc); return 0; @@ -1988,8 +2067,6 @@ static int tegra_dc_remove(struct platform_device *pdev) struct tegra_dc *dc = platform_get_drvdata(pdev); int err; - host1x_syncpt_free(dc->syncpt); - err = host1x_client_unregister(&dc->client); if (err < 0) { dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", @@ -2016,7 +2093,6 @@ static int tegra_dc_remove(struct platform_device *pdev) struct platform_driver tegra_dc_driver = { .driver = { .name = "tegra-dc", - .owner = THIS_MODULE, .of_match_table = tegra_dc_of_match, }, .probe = tegra_dc_probe,