From patchwork Mon Feb 24 23:20:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 11402939 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 50EAC14BC for ; Tue, 25 Feb 2020 08:52:47 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 38ED52176D for ; Tue, 25 Feb 2020 08:52:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38ED52176D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D65246EA47; Tue, 25 Feb 2020 08:51:49 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1BC626E9B4 for ; Mon, 24 Feb 2020 23:21:37 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id 0860029360F Received: by earth.universe (Postfix, from userid 1000) id B2F783C0C89; Tue, 25 Feb 2020 00:21:30 +0100 (CET) From: Sebastian Reichel To: Sebastian Reichel , Laurent Pinchart , Tomi Valkeinen Subject: [PATCHv2 06/56] drm/omap: constify write buffers Date: Tue, 25 Feb 2020 00:20:36 +0100 Message-Id: <20200224232126.3385250-7-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200224232126.3385250-1-sebastian.reichel@collabora.com> References: <20200224232126.3385250-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 25 Feb 2020 08:50:43 +0000 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: , Cc: kernel@collabora.com, Tony Lindgren , "H. Nikolaus Schaller" , Merlijn Wajer , Sebastian Reichel , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The write buffers are not modified, so they can be constant. Signed-off-by: Sebastian Reichel Reviewed-by: Laurent Pinchart Reviewed-by: Tomi Valkeinen --- drivers/gpu/drm/omapdrm/dss/dsi.c | 24 ++++++++++++------------ drivers/gpu/drm/omapdrm/dss/omapdss.h | 10 +++++----- 2 files changed, 17 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index bb2548d091ef..f01e0476296d 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -2601,11 +2601,11 @@ static inline void dsi_vc_write_long_payload(struct dsi_data *dsi, int channel, } static int dsi_vc_send_long(struct dsi_data *dsi, int channel, u8 data_type, - u8 *data, u16 len, u8 ecc) + const u8 *data, u16 len, u8 ecc) { /*u32 val; */ int i; - u8 *p; + const u8 *p; int r = 0; u8 b1, b2, b3, b4; @@ -2698,7 +2698,7 @@ static int dsi_vc_send_null(struct dsi_data *dsi, int channel) } static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel, - u8 *data, int len, + const u8 *data, int len, enum dss_dsi_content_type type) { int r; @@ -2729,7 +2729,7 @@ static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel, } static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel, - u8 *data, int len) + const u8 *data, int len) { struct dsi_data *dsi = to_dsi_data(dssdev); @@ -2738,7 +2738,7 @@ static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel, } static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel, - u8 *data, int len) + const u8 *data, int len) { struct dsi_data *dsi = to_dsi_data(dssdev); @@ -2747,7 +2747,7 @@ static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int chann } static int dsi_vc_write_common(struct omap_dss_device *dssdev, - int channel, u8 *data, int len, + int channel, const u8 *data, int len, enum dss_dsi_content_type type) { struct dsi_data *dsi = to_dsi_data(dssdev); @@ -2776,15 +2776,15 @@ static int dsi_vc_write_common(struct omap_dss_device *dssdev, return r; } -static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data, - int len) +static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, + const u8 *data, int len) { return dsi_vc_write_common(dssdev, channel, data, len, DSS_DSI_CONTENT_DCS); } -static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data, - int len) +static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, + const u8 *data, int len) { return dsi_vc_write_common(dssdev, channel, data, len, DSS_DSI_CONTENT_GENERIC); @@ -2810,7 +2810,7 @@ static int dsi_vc_dcs_send_read_request(struct dsi_data *dsi, int channel, } static int dsi_vc_generic_send_read_request(struct dsi_data *dsi, int channel, - u8 *reqdata, int reqlen) + const u8 *reqdata, int reqlen) { u16 data; u8 data_type; @@ -2983,7 +2983,7 @@ static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_c } static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel, - u8 *reqdata, int reqlen, u8 *buf, int buflen) + const u8 *reqdata, int reqlen, u8 *buf, int buflen) { struct dsi_data *dsi = to_dsi_data(dssdev); int r; diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index 53fea1cbbc2d..b909b3a8c835 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -308,18 +308,18 @@ struct omapdss_dsi_ops { /* data transfer */ int (*dcs_write)(struct omap_dss_device *dssdev, int channel, - u8 *data, int len); + const u8 *data, int len); int (*dcs_write_nosync)(struct omap_dss_device *dssdev, int channel, - u8 *data, int len); + const u8 *data, int len); int (*dcs_read)(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd, u8 *data, int len); int (*gen_write)(struct omap_dss_device *dssdev, int channel, - u8 *data, int len); + const u8 *data, int len); int (*gen_write_nosync)(struct omap_dss_device *dssdev, int channel, - u8 *data, int len); + const u8 *data, int len); int (*gen_read)(struct omap_dss_device *dssdev, int channel, - u8 *reqdata, int reqlen, + const u8 *reqdata, int reqlen, u8 *data, int len); int (*bta_sync)(struct omap_dss_device *dssdev, int channel);