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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-06-20 22:08:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-20 22:08:32 +0200 |
| commit | b50fb7c99217922ea36d6e38bae34d84c0587cad (patch) | |
| tree | 5f46167ac7fe5cd87bbed8ca8644f32befc5bbae /drivers/gpu/drm/mediatek/mtk_dsi.c | |
| parent | 04c848d398797a626608ff48804d809ae6687163 (diff) | |
| parent | 41f1830f5a7af77cf5c86359aba3cbd706687e52 (diff) | |
Merge branch 'linus' into irq/core
Get upstream changes so pending patches won't conflict.
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_dsi.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 808b995a990f..b5cc6e12334c 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -19,6 +19,7 @@ #include <drm/drm_of.h> #include <linux/clk.h> #include <linux/component.h> +#include <linux/iopoll.h> #include <linux/irq.h> #include <linux/of.h> #include <linux/of_platform.h> @@ -900,16 +901,12 @@ static int mtk_dsi_host_detach(struct mipi_dsi_host *host, static void mtk_dsi_wait_for_idle(struct mtk_dsi *dsi) { - u32 timeout_ms = 500000; /* total 1s ~ 2s timeout */ - - while (timeout_ms--) { - if (!(readl(dsi->regs + DSI_INTSTA) & DSI_BUSY)) - break; - - usleep_range(2, 4); - } + int ret; + u32 val; - if (timeout_ms == 0) { + ret = readl_poll_timeout(dsi->regs + DSI_INTSTA, val, !(val & DSI_BUSY), + 4, 2000000); + if (ret) { DRM_WARN("polling dsi wait not busy timeout!\n"); mtk_dsi_enable(dsi); |