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drm/bridge: tc358767: Simplify polling in tc_main_link_setup()

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Replace explicit polling loop with equivalent call to
tc_poll_timeout() for brevity. No functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190619052716.16831-3-andrew.smirnov@gmail.com
This commit is contained in:
Andrey Smirnov 2019-06-18 22:27:03 -07:00 committed by Andrzej Hajda
parent 93a105694f
commit ebcce4e642
1 changed files with 3 additions and 9 deletions
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12
drivers/gpu/drm/bridge/tc358767.c
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@ -765,7 +765,6 @@ static int tc_main_link_enable(struct tc_data *tc)
struct device *dev = tc->dev; struct device *dev = tc->dev;
unsigned int rate; unsigned int rate;
u32 dp_phy_ctrl; u32 dp_phy_ctrl;
int timeout;
u32 value; u32 value;
int ret; int ret;
u8 tmp[8]; u8 tmp[8];
@ -822,15 +821,10 @@ static int tc_main_link_enable(struct tc_data *tc)
dp_phy_ctrl &= ~(DP_PHY_RST | PHY_M1_RST | PHY_M0_RST); dp_phy_ctrl &= ~(DP_PHY_RST | PHY_M1_RST | PHY_M0_RST);
tc_write(DP_PHY_CTRL, dp_phy_ctrl); tc_write(DP_PHY_CTRL, dp_phy_ctrl);
timeout = 1000; ret = tc_poll_timeout(tc, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 1, 1000);
do { if (ret) {
tc_read(DP_PHY_CTRL, &value);
udelay(1);
} while ((!(value & PHY_RDY)) && (--timeout));
if (timeout == 0) {
dev_err(dev, "timeout waiting for phy become ready"); dev_err(dev, "timeout waiting for phy become ready");
return -ETIMEDOUT; return ret;
} }
/* Set misc: 8 bits per color */ /* Set misc: 8 bits per color */