From patchwork Sun Nov 17 02:40:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 11248017 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 0657414E5 for ; Sun, 17 Nov 2019 07:11:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D9CDD20740 for ; Sun, 17 Nov 2019 07:11:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726032AbfKQHLF (ORCPT ); Sun, 17 Nov 2019 02:11:05 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:50940 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725880AbfKQHLE (ORCPT ); Sun, 17 Nov 2019 02:11:04 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id 5820D28FCAF Received: by earth.universe (Postfix, from userid 1000) id 0FCCD3C0CA3; Sun, 17 Nov 2019 03:41:40 +0100 (CET) From: Sebastian Reichel To: Sebastian Reichel , Laurent Pinchart , Tomi Valkeinen Cc: Tony Lindgren , Merlijn Wajer , "H. Nikolaus Schaller" , linux-omap@vger.kernel.org, dri-devel@lists.freedesktop.org, kernel@collabora.com, Sebastian Reichel Subject: [RFCv1 23/42] drm/omap: dsi: lp/hs switching support for transfer() Date: Sun, 17 Nov 2019 03:40:09 +0100 Message-Id: <20191117024028.2233-24-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191117024028.2233-1-sebastian.reichel@collabora.com> References: <20191117024028.2233-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Integrate low-power / high-speed bus switching into transfer function and drop the omapdrm specific enable_hs() callback. Signed-off-by: Sebastian Reichel --- drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 6 +++--- drivers/gpu/drm/omapdrm/dss/dsi.c | 13 +++++++++++-- drivers/gpu/drm/omapdrm/dss/omapdss.h | 2 -- 3 files changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c index 170cbc78fbef..5603dae0fd0f 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -269,7 +269,7 @@ static int dsicm_exit_ulps(struct panel_drv_data *ddata) return 0; src->ops->enable(src); - src->ops->dsi.enable_hs(src, ddata->dsi->channel, true); + ddata->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; r = _dsicm_enable_te(ddata, true); if (r) { @@ -574,7 +574,7 @@ static int dsicm_power_on(struct panel_drv_data *ddata) dsicm_hw_reset(ddata); - src->ops->dsi.enable_hs(src, ddata->dsi->channel, false); + ddata->dsi->mode_flags |= MIPI_DSI_MODE_LPM; r = dsicm_sleep_out(ddata); if (r) @@ -617,7 +617,7 @@ static int dsicm_power_on(struct panel_drv_data *ddata) ddata->intro_printed = true; } - src->ops->dsi.enable_hs(src, ddata->dsi->channel, true); + ddata->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; return 0; err: diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 32271870e74c..8eb323adb30a 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -45,6 +45,9 @@ struct dsi_reg { u16 module; u16 idx; }; #define DSI_REG(mod, idx) ((const struct dsi_reg) { mod, idx }) +/* returns true iff both arguments logically differs */ +#define NEQV(a, b) (!(a) ^ !(b)) + /* DSI Protocol Engine */ #define DSI_PROTO 0 @@ -329,6 +332,7 @@ struct dsi_data { int irq; bool is_enabled; + bool in_lp_mode; struct clk *dss_clk; struct regmap *syscon; @@ -2431,6 +2435,8 @@ static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel, /* start the DDR clock by sending a NULL packet */ if (dsi->vm_timings.ddr_clk_always_on && enable) dsi_vc_send_null(dsi, channel); + + dsi->in_lp_mode = !enable; } static void dsi_vc_flush_long_data(struct dsi_data *dsi, int channel) @@ -4697,6 +4703,11 @@ static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host, struct dsi_data *dsi = host_to_omap(host); struct omap_dss_device *dssdev = &dsi->output; + if (NEQV(msg->flags & MIPI_DSI_MSG_USE_LPM, dsi->in_lp_mode)) { + dsi_vc_enable_hs(dssdev, msg->channel, + !(msg->flags & MIPI_DSI_MSG_USE_LPM)); + } + switch (msg->type) { case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM: case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM: @@ -4757,8 +4768,6 @@ static const struct omap_dss_device_ops dsi_ops = { .disable = dsi_display_disable, - .enable_hs = dsi_vc_enable_hs, - .set_config = dsi_set_config, .enable_video_output = dsi_enable_video_output, diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index cd9769711b58..5bcc14d9f737 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -294,8 +294,6 @@ struct omapdss_dsi_ops { int (*set_config)(struct omap_dss_device *dssdev, const struct omap_dss_dsi_config *cfg); - void (*enable_hs)(struct omap_dss_device *dssdev, int channel, - bool enable); int (*enable_te)(struct omap_dss_device *dssdev, bool enable); int (*update)(struct omap_dss_device *dssdev, int channel,