From patchwork Fri Mar 7 04:34:47 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 14005928 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AF50FC19F32 for ; Fri, 7 Mar 2025 04:35:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1C1AE10EAC4; Fri, 7 Mar 2025 04:35:32 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="QZy5jppA"; dkim-atps=neutral Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9E99B10EAC4; Fri, 7 Mar 2025 04:35:30 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 09BE2A45481; Fri, 7 Mar 2025 04:29:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6E1FC4CED1; Fri, 7 Mar 2025 04:35:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741322129; bh=86F5pdRlv88khWZ04dZw/iDU5RbACl7IwpCgSIsUn6A=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=QZy5jppAPDmYf4xafrY2FIn+8fZdAPYHgX3OHgM4IPH5fpapSF7VmPqF4rbhXOMg2 SuljeUSLbPD4M7sPXuVDiAWXcZDG/iHe+UrBG3NHMK6D4Ozbkfcliobp1uLanrbiao rGNSdhdWl2y1qXucE21JAZLElnZ7kFyzWk4eI8GIdsPVKCGF6NlSye/lBF+vk3Wo3t vktiQIvrlr0J1pl73mFLzWA9hn+YR8D/v0XpMRepuQtOk7MhgMHAdwbBSy08J3LCfR E4KEyxZvolxrivu3uEc29YsIgX5LT3M4V5+Oe1nFH0UuuSh8nOClPPx/vOfPo1BBtS /K8zQfd2Q953Q== From: Dmitry Baryshkov Date: Fri, 07 Mar 2025 06:34:47 +0200 Subject: [PATCH RFC v3 5/7] drm/display: dp-cec: use new DCPD access helpers MIME-Version: 1.0 Message-Id: <20250307-drm-rework-dpcd-access-v3-5-9044a3a868ee@linaro.org> References: <20250307-drm-rework-dpcd-access-v3-0-9044a3a868ee@linaro.org> In-Reply-To: <20250307-drm-rework-dpcd-access-v3-0-9044a3a868ee@linaro.org> To: Lyude Paul , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , Jani Nikula , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Xinliang Liu , Tian Tao , Xinwei Kong , Sumit Semwal , Yongqin Liu , John Stultz Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Jani Nikula X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=5086; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=d/g0s+1RbkEZsu0cFrspMKQl16Oh0pnUASV91YvLy1M=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnyndmRLlndyW4oZgFj1l1qw5GJtas1Ojxfota7 xvMR8hfZgmJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ8p3ZgAKCRCLPIo+Aiko 1f2bCACcgvrvnp6g+NKF9KtJJfav7WqL1FsWi57sDdOewZMVV62fFoqoyTvCtFAB9cffzUoT1m9 SNWUYMHEi3c43PA+yB36HxjMcwZTU5+yIQWXvl3I3I4tXUezTnKVOlUAF1ffe60CoiZi3kV9JBr 3/ya4ChlCPgJbpFm9A8HiHyvKhFYaFZTxWv+leqIrrg8qey/kxhSyGu1UiQjtV+0uthP1WkJueu wBpZ0tVZBZy8O8Y1ZA4HwvSrgibKnoU/RkZkEUoE8u99zrUhgmJKeIwKDNa/9hH03xeHNpntvAP c4cW/OdXWgzpJxLLl664ADlQrTs6lu88CHmWtI19Nl1AK4CK X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Dmitry Baryshkov Switch drm_dp_cec.c to use new set of DPCD read / write helpers. Reviewed-by: Lyude Paul Acked-by: Jani Nikula Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_dp_cec.c | 37 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_cec.c b/drivers/gpu/drm/display/drm_dp_cec.c index 56a4965e518cc237c992a2e31b9f6de05c14766a..ed31471bd0e28826254ecedac48c5c126729d470 100644 --- a/drivers/gpu/drm/display/drm_dp_cec.c +++ b/drivers/gpu/drm/display/drm_dp_cec.c @@ -96,7 +96,7 @@ static int drm_dp_cec_adap_enable(struct cec_adapter *adap, bool enable) u32 val = enable ? DP_CEC_TUNNELING_ENABLE : 0; ssize_t err = 0; - err = drm_dp_dpcd_writeb(aux, DP_CEC_TUNNELING_CONTROL, val); + err = drm_dp_dpcd_write_byte(aux, DP_CEC_TUNNELING_CONTROL, val); return (enable && err < 0) ? err : 0; } @@ -112,7 +112,7 @@ static int drm_dp_cec_adap_log_addr(struct cec_adapter *adap, u8 addr) la_mask |= adap->log_addrs.log_addr_mask | (1 << addr); mask[0] = la_mask & 0xff; mask[1] = la_mask >> 8; - err = drm_dp_dpcd_write(aux, DP_CEC_LOGICAL_ADDRESS_MASK, mask, 2); + err = drm_dp_dpcd_write_data(aux, DP_CEC_LOGICAL_ADDRESS_MASK, mask, 2); return (addr != CEC_LOG_ADDR_INVALID && err < 0) ? err : 0; } @@ -123,15 +123,14 @@ static int drm_dp_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, unsigned int retries = min(5, attempts - 1); ssize_t err; - err = drm_dp_dpcd_write(aux, DP_CEC_TX_MESSAGE_BUFFER, - msg->msg, msg->len); + err = drm_dp_dpcd_write_data(aux, DP_CEC_TX_MESSAGE_BUFFER, + msg->msg, msg->len); if (err < 0) return err; - err = drm_dp_dpcd_writeb(aux, DP_CEC_TX_MESSAGE_INFO, - (msg->len - 1) | (retries << 4) | - DP_CEC_TX_MESSAGE_SEND); - return err < 0 ? err : 0; + return drm_dp_dpcd_write_byte(aux, DP_CEC_TX_MESSAGE_INFO, + (msg->len - 1) | (retries << 4) | + DP_CEC_TX_MESSAGE_SEND); } static int drm_dp_cec_adap_monitor_all_enable(struct cec_adapter *adap, @@ -144,13 +143,13 @@ static int drm_dp_cec_adap_monitor_all_enable(struct cec_adapter *adap, if (!(adap->capabilities & CEC_CAP_MONITOR_ALL)) return 0; - err = drm_dp_dpcd_readb(aux, DP_CEC_TUNNELING_CONTROL, &val); - if (err >= 0) { + err = drm_dp_dpcd_read_byte(aux, DP_CEC_TUNNELING_CONTROL, &val); + if (!err) { if (enable) val |= DP_CEC_SNOOPING_ENABLE; else val &= ~DP_CEC_SNOOPING_ENABLE; - err = drm_dp_dpcd_writeb(aux, DP_CEC_TUNNELING_CONTROL, val); + err = drm_dp_dpcd_write_byte(aux, DP_CEC_TUNNELING_CONTROL, val); } return (enable && err < 0) ? err : 0; } @@ -194,7 +193,7 @@ static int drm_dp_cec_received(struct drm_dp_aux *aux) u8 rx_msg_info; ssize_t err; - err = drm_dp_dpcd_readb(aux, DP_CEC_RX_MESSAGE_INFO, &rx_msg_info); + err = drm_dp_dpcd_read_byte(aux, DP_CEC_RX_MESSAGE_INFO, &rx_msg_info); if (err < 0) return err; @@ -202,7 +201,7 @@ static int drm_dp_cec_received(struct drm_dp_aux *aux) return 0; msg.len = (rx_msg_info & DP_CEC_RX_MESSAGE_LEN_MASK) + 1; - err = drm_dp_dpcd_read(aux, DP_CEC_RX_MESSAGE_BUFFER, msg.msg, msg.len); + err = drm_dp_dpcd_read_data(aux, DP_CEC_RX_MESSAGE_BUFFER, msg.msg, msg.len); if (err < 0) return err; @@ -215,7 +214,7 @@ static void drm_dp_cec_handle_irq(struct drm_dp_aux *aux) struct cec_adapter *adap = aux->cec.adap; u8 flags; - if (drm_dp_dpcd_readb(aux, DP_CEC_TUNNELING_IRQ_FLAGS, &flags) < 0) + if (drm_dp_dpcd_read_byte(aux, DP_CEC_TUNNELING_IRQ_FLAGS, &flags) < 0) return; if (flags & DP_CEC_RX_MESSAGE_INFO_VALID) @@ -230,7 +229,7 @@ static void drm_dp_cec_handle_irq(struct drm_dp_aux *aux) (DP_CEC_TX_ADDRESS_NACK_ERROR | DP_CEC_TX_DATA_NACK_ERROR)) cec_transmit_attempt_done(adap, CEC_TX_STATUS_NACK | CEC_TX_STATUS_MAX_RETRIES); - drm_dp_dpcd_writeb(aux, DP_CEC_TUNNELING_IRQ_FLAGS, flags); + drm_dp_dpcd_write_byte(aux, DP_CEC_TUNNELING_IRQ_FLAGS, flags); } /** @@ -253,13 +252,13 @@ void drm_dp_cec_irq(struct drm_dp_aux *aux) if (!aux->cec.adap) goto unlock; - ret = drm_dp_dpcd_readb(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, - &cec_irq); + ret = drm_dp_dpcd_read_byte(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, + &cec_irq); if (ret < 0 || !(cec_irq & DP_CEC_IRQ)) goto unlock; drm_dp_cec_handle_irq(aux); - drm_dp_dpcd_writeb(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, DP_CEC_IRQ); + drm_dp_dpcd_write_byte(aux, DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1, DP_CEC_IRQ); unlock: mutex_unlock(&aux->cec.lock); } @@ -269,7 +268,7 @@ static bool drm_dp_cec_cap(struct drm_dp_aux *aux, u8 *cec_cap) { u8 cap = 0; - if (drm_dp_dpcd_readb(aux, DP_CEC_TUNNELING_CAPABILITY, &cap) != 1 || + if (drm_dp_dpcd_read_byte(aux, DP_CEC_TUNNELING_CAPABILITY, &cap) < 0 || !(cap & DP_CEC_TUNNELING_CAPABLE)) return false; if (cec_cap)