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Thu, 05 Nov 2020 06:52:28 -0800 (PST) From: Lee Jones To: lee.jones@linaro.org Cc: linux-kernel@vger.kernel.org, Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , Jason Yan , Sam Ravnborg , Jingoo Han , dri-devel@lists.freedesktop.org Subject: [PATCH 12/19] gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function 'analogix_dp_write_byte_to_dpcd' Date: Thu, 5 Nov 2020 14:45:10 +0000 Message-Id: <20201105144517.1826692-13-lee.jones@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201105144517.1826692-1-lee.jones@linaro.org> References: <20201105144517.1826692-1-lee.jones@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fixes the following W=1 kernel build warning(s): drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:571:5: warning: no previous prototype for ‘analogix_dp_write_byte_to_dpcd’ [-Wmissing-prototypes] Cc: Andrzej Hajda Cc: Neil Armstrong Cc: Laurent Pinchart Cc: Jonas Karlman Cc: Jernej Skrabec Cc: David Airlie Cc: Daniel Vetter Cc: Jason Yan Cc: Sam Ravnborg Cc: Jingoo Han Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones --- .../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 fafb4b492ea04..9ce45c757f8c8 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -568,50 +568,6 @@ static int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp) return retval; } -int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp, - unsigned int reg_addr, - unsigned char data) -{ - u32 reg; - int i; - int retval; - - for (i = 0; i < 3; i++) { - /* Clear AUX CH data buffer */ - reg = BUF_CLR; - writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL); - - /* Select DPCD device address */ - reg = AUX_ADDR_7_0(reg_addr); - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0); - reg = AUX_ADDR_15_8(reg_addr); - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8); - reg = AUX_ADDR_19_16(reg_addr); - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16); - - /* Write data buffer */ - reg = (unsigned int)data; - writel(reg, dp->reg_base + ANALOGIX_DP_BUF_DATA_0); - - /* - * Set DisplayPort transaction and write 1 byte - * If bit 3 is 1, DisplayPort transaction. - * If Bit 3 is 0, I2C transaction. - */ - reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; - writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1); - - /* Start AUX transaction */ - retval = analogix_dp_start_aux_transaction(dp); - if (retval == 0) - break; - - dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__); - } - - return retval; -} - void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype) { u32 reg; -- 2.25.1