From db5225d4050d5ef4bd7e9aced161c87d6a90decc Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 8 Apr 2013 18:04:34 +0200 Subject: [PATCH] staging: drm/imx: ipu-di: add comments explaining signal generator configuration Signed-off-by: Philipp Zabel Signed-off-by: Greg Kroah-Hartman --- drivers/staging/imx-drm/ipu-v3/ipu-di.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-di.c b/drivers/staging/imx-drm/ipu-v3/ipu-di.c index ec340da..26534b7 100644 --- a/drivers/staging/imx-drm/ipu-v3/ipu-di.c +++ b/drivers/staging/imx-drm/ipu-v3/ipu-di.c @@ -413,9 +413,11 @@ static void ipu_di_sync_config_noninterlaced(struct ipu_di *di, sig->v_end_width; struct di_sync_config cfg[] = { { + /* 1: INT_HSYNC */ .run_count = h_total - 1, .run_src = DI_SYNC_CLK, } , { + /* PIN2: HSYNC */ .run_count = h_total - 1, .run_src = DI_SYNC_CLK, .offset_count = div * sig->v_to_h_sync, @@ -424,23 +426,28 @@ static void ipu_di_sync_config_noninterlaced(struct ipu_di *di, .cnt_polarity_trigger_src = DI_SYNC_CLK, .cnt_down = sig->h_sync_width * 2, } , { + /* PIN3: VSYNC */ .run_count = v_total - 1, .run_src = DI_SYNC_INT_HSYNC, .cnt_polarity_gen_en = 1, .cnt_polarity_trigger_src = DI_SYNC_INT_HSYNC, .cnt_down = sig->v_sync_width * 2, } , { + /* 4: Line Active */ .run_src = DI_SYNC_HSYNC, .offset_count = sig->v_sync_width + sig->v_start_width, .offset_src = DI_SYNC_HSYNC, .repeat_count = sig->height, .cnt_clr_src = DI_SYNC_VSYNC, } , { + /* 5: DE, referenced by DC */ .run_src = DI_SYNC_CLK, .offset_count = sig->h_sync_width + sig->h_start_width, .offset_src = DI_SYNC_CLK, .repeat_count = sig->width, - .cnt_clr_src = 5, + .cnt_clr_src = 5, /* Line Active */ + } , { + /* unused */ } , { /* unused */ } , { -- 2.7.4