diff options
| author | Terence Hampson <thampson@codeaurora.org> | 2013-09-27 18:21:48 -0400 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:21:59 -0700 |
| commit | 8dffa398f35f50af7d70daa5bdc11294cf0159a9 (patch) | |
| tree | f21e92d4b4ab922f3ae57ccc684473e45b5a3223 /drivers/video/fbdev/msm | |
| parent | 2c9982241ccf0e3cc1f293a8d77797ce42970e60 (diff) | |
mdss: mdp3: Add underrun counter to debugfs stat call
To allow for easier debug we added logs to output current
underrun count.
Change-Id: I61f3911b315193ae5550de0332c5abefe22c12ce
Signed-off-by: Terence Hampson <thampson@codeaurora.org>
Diffstat (limited to 'drivers/video/fbdev/msm')
| -rw-r--r-- | drivers/video/fbdev/msm/mdp3.c | 27 | ||||
| -rw-r--r-- | drivers/video/fbdev/msm/mdp3.h | 2 | ||||
| -rw-r--r-- | drivers/video/fbdev/msm/mdp3_dma.c | 3 |
3 files changed, 31 insertions, 1 deletions
diff --git a/drivers/video/fbdev/msm/mdp3.c b/drivers/video/fbdev/msm/mdp3.c index 0b0aa3d3ffc0..ec3b95411769 100644 --- a/drivers/video/fbdev/msm/mdp3.c +++ b/drivers/video/fbdev/msm/mdp3.c @@ -1806,6 +1806,14 @@ static int mdp3_panel_register_done(struct mdss_panel_data *pdata) return rc; } +static int mdp3_debug_dump_stats(void *data, char *buf, int len) +{ + int total = 0; + total = scnprintf(buf, len, "underrun: %08u\n", + mdp3_res->underrun_cnt); + return total; +} + static void mdp3_debug_enable_clock(int on) { if (on) @@ -1825,7 +1833,7 @@ static int mdp3_debug_init(struct platform_device *pdev) mdss_res = mdata; - mdata->debug_inf.debug_dump_stats = NULL; + mdata->debug_inf.debug_dump_stats = mdp3_debug_dump_stats; mdata->debug_inf.debug_enable_clock = mdp3_debug_enable_clock; rc = mdss_debugfs_init(mdata); @@ -1847,6 +1855,13 @@ static void mdp3_debug_deinit(struct platform_device *pdev) } } +static void mdp3_dma_underrun_intr_handler(int type, void *arg) +{ + mdp3_res->underrun_cnt++; + pr_err("display underrun detected count=%d\n", + mdp3_res->underrun_cnt); +} + static int mdp3_probe(struct platform_device *pdev) { int rc; @@ -1857,6 +1872,11 @@ static int mdp3_probe(struct platform_device *pdev) .fb_stride = mdp3_fb_stride, }; + struct mdp3_intr_cb underrun_cb = { + .cb = mdp3_dma_underrun_intr_handler, + .data = NULL, + }; + if (!pdev->dev.of_node) { pr_err("MDP driver only supports device tree probe\n"); return -ENOTSUPP; @@ -1904,6 +1924,11 @@ static int mdp3_probe(struct platform_device *pdev) if (rc) pr_err("unable to register mdp instance\n"); + rc = mdp3_set_intr_callback(MDP3_INTR_LCDC_UNDERFLOW, + &underrun_cb); + if (rc) + pr_err("unable to configure interrupt callback\n"); + probe_done: if (IS_ERR_VALUE(rc)) { mdp3_res_deinit(); diff --git a/drivers/video/fbdev/msm/mdp3.h b/drivers/video/fbdev/msm/mdp3.h index 764b23b3baee..68ebcd6670c6 100644 --- a/drivers/video/fbdev/msm/mdp3.h +++ b/drivers/video/fbdev/msm/mdp3.h @@ -143,6 +143,8 @@ struct mdp3_hw_resource { u32 irq_ref_count[MDP3_MAX_INTR]; u32 irq_mask; struct mdp3_intr_cb callbacks[MDP3_MAX_INTR]; + u32 underrun_cnt; + int irq_registered; u32 splash_mem_addr; diff --git a/drivers/video/fbdev/msm/mdp3_dma.c b/drivers/video/fbdev/msm/mdp3_dma.c index 27fba140d3bb..b08dd7903b7c 100644 --- a/drivers/video/fbdev/msm/mdp3_dma.c +++ b/drivers/video/fbdev/msm/mdp3_dma.c @@ -159,6 +159,7 @@ static int mdp3_dma_callback_setup(struct mdp3_dma *dma) .data = dma, }; + struct mdp3_intr_cb hist_cb = { .cb = mdp3_hist_done_intr_handler, .data = dma, @@ -298,6 +299,7 @@ static int mdp3_dmap_config(struct mdp3_dma *dma, dma->output_config = *output_config; mdp3_dma_sync_config(dma, source_config); + mdp3_irq_enable(MDP3_INTR_LCDC_UNDERFLOW); mdp3_dma_callback_setup(dma); return 0; } @@ -824,6 +826,7 @@ static int mdp3_dma_stop(struct mdp3_dma *dma, struct mdp3_intf *intf) mdp3_dma_callback_disable(dma, MDP3_DMA_CALLBACK_TYPE_VSYNC | MDP3_DMA_CALLBACK_TYPE_DMA_DONE); + mdp3_irq_disable(MDP3_INTR_LCDC_UNDERFLOW); init_completion(&dma->dma_comp); dma->vsync_client.handler = NULL; |