[PATCH 19/19] gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function 'analogix_dp_start_aux_transaction'

Lee Jones
2020-11-05T14:52:46Z

Fixes the following W=1 kernel build warning(s):

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:527:12: warning: ‘analogix_dp_start_aux_transaction’ defined but not used [-Wunused-function]

Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jason Yan <yanaijie@huawei.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
.../gpu/drm/bridge/analogix/analogix_dp_reg.c | 44 -------------------
1 file changed, 44 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 9ce45c757f8c8..cab6c8b92efd4 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -524,50 +524,6 @@ void analogix_dp_enable_sw_function(struct analogix_dp_device *dp)
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
}

-static int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp)
-{
- int reg;
- int retval = 0;
- int timeout_loop = 0;
-
- /* Enable AUX CH operation */
- reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
- reg |= AUX_EN;
- writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
-
- /* Is AUX CH command reply received? */
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- while (!(reg & RPLY_RECEIV)) {
- timeout_loop++;
- if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
- dev_err(dp->dev, "AUX CH command reply failed!\n");
- return -ETIMEDOUT;
- }
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- usleep_range(10, 11);
- }
-
- /* Clear interrupt source for AUX CH command reply */
- writel(RPLY_RECEIV, dp->reg_base + ANALOGIX_DP_INT_STA);
-
- /* Clear interrupt source for AUX CH access error */
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- if (reg & AUX_ERR) {
- writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
- return -EREMOTEIO;
- }
-
- /* Check AUX CH error access status */
- reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
- if ((reg & AUX_STATUS_MASK) != 0) {
- dev_err(dp->dev, "AUX CH error happens: %d\n\n",
- reg & AUX_STATUS_MASK);
- return -EREMOTEIO;
- }
-
- return retval;
-}
-
void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype)
{
u32 reg;
--
2.25.1