diff options
Diffstat (limited to 'target/linux/omap/patches-3.18/0343-video-da8xx-fb-Add-API-to-register-wait-for-vsync-ca.patch')
| -rw-r--r-- | target/linux/omap/patches-3.18/0343-video-da8xx-fb-Add-API-to-register-wait-for-vsync-ca.patch | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/target/linux/omap/patches-3.18/0343-video-da8xx-fb-Add-API-to-register-wait-for-vsync-ca.patch b/target/linux/omap/patches-3.18/0343-video-da8xx-fb-Add-API-to-register-wait-for-vsync-ca.patch new file mode 100644 index 0000000000..8c0898a9d6 --- /dev/null +++ b/target/linux/omap/patches-3.18/0343-video-da8xx-fb-Add-API-to-register-wait-for-vsync-ca.patch @@ -0,0 +1,91 @@ +From 9a1a810516ae9cb3259b898b6879901c5b44fa90 Mon Sep 17 00:00:00 2001 +From: Prathap M S <msprathap@ti.com> +Date: Mon, 2 Sep 2013 12:05:23 +0530 +Subject: [PATCH 343/752] video: da8xx-fb: Add API to register wait for vsync + callback + +This patch adds APIs to register and unregister wait for vsync callback. +This is derived from commit id 2d44302545da24fd22912d964102bc31a7489e97 +This commit id was part of 3.2 kernel sources. + +Signed-off-by: Prathap M S <msprathap@ti.com> +--- + drivers/video/fbdev/da8xx-fb.c | 33 +++++++++++++++++++++++++++++++++ + include/video/da8xx-fb.h | 4 ++++ + 2 files changed, 37 insertions(+) + +--- a/drivers/video/fbdev/da8xx-fb.c ++++ b/drivers/video/fbdev/da8xx-fb.c +@@ -197,6 +197,9 @@ static struct fb_fix_screeninfo da8xx_fb + .accel = FB_ACCEL_NONE + }; + ++static vsync_callback_t vsync_cb_handler; ++static void *vsync_cb_arg; ++ + static struct fb_videomode known_lcd_panels[] = { + /* Sharp LCD035Q3DG01 */ + [0] = { +@@ -831,6 +834,32 @@ static int lcd_init(struct da8xx_fb_par + return 0; + } + ++int register_vsync_cb(vsync_callback_t handler, void *arg, int idx) ++{ ++ if ((vsync_cb_handler == NULL) && (vsync_cb_arg == NULL)) { ++ vsync_cb_arg = arg; ++ vsync_cb_handler = handler; ++ } else { ++ return -EEXIST; ++ } ++ ++ return 0; ++} ++EXPORT_SYMBOL(register_vsync_cb); ++ ++int unregister_vsync_cb(vsync_callback_t handler, void *arg, int idx) ++{ ++ if ((vsync_cb_handler == handler) && (vsync_cb_arg == arg)) { ++ vsync_cb_handler = NULL; ++ vsync_cb_arg = NULL; ++ } else { ++ return -ENXIO; ++ } ++ ++ return 0; ++} ++EXPORT_SYMBOL(unregister_vsync_cb); ++ + /* IRQ handler for version 2 of LCDC */ + static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg) + { +@@ -868,6 +897,8 @@ static irqreturn_t lcdc_irq_handler_rev0 + LCD_DMA_FRM_BUF_CEILING_ADDR_0_REG); + par->vsync_flag = 1; + wake_up_interruptible(&par->vsync_wait); ++ if (vsync_cb_handler) ++ vsync_cb_handler(vsync_cb_arg); + } + + if (stat & LCD_END_OF_FRAME1) { +@@ -943,6 +974,8 @@ static irqreturn_t lcdc_irq_handler_rev0 + LCD_DMA_FRM_BUF_CEILING_ADDR_1_REG); + par->vsync_flag = 1; + wake_up_interruptible(&par->vsync_wait); ++ if (vsync_cb_handler) ++ vsync_cb_handler(vsync_cb_arg); + } + } + +--- a/include/video/da8xx-fb.h ++++ b/include/video/da8xx-fb.h +@@ -91,5 +91,9 @@ struct lcd_sync_arg { + /* Proprietary FB_SYNC_ flags */ + #define FB_SYNC_CLK_INVERT 0x40000000 + ++typedef void (*vsync_callback_t)(void *arg); ++int register_vsync_cb(vsync_callback_t handler, void *arg, int idx); ++int unregister_vsync_cb(vsync_callback_t handler, void *arg, int idx); ++ + #endif /* ifndef DA8XX_FB_H */ + |