From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754312AbcGHJFx (ORCPT ); Fri, 8 Jul 2016 05:05:53 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:34062 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754205AbcGHJFa (ORCPT ); Fri, 8 Jul 2016 05:05:30 -0400 From: Chris Zhong To: dianders@chromium.org, tfiga@chromium.org, heiko@sntech.de, yzq@rock-chips.com Cc: linux-rockchip@lists.infradead.org, Chris Zhong , Mark Yao , David Airlie , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/7] drm/rockchip: dw-mipi: add dw-mipi power domain support Date: Fri, 8 Jul 2016 17:04:58 +0800 Message-Id: <1467968701-15620-5-git-send-email-zyw@rock-chips.com> X-Mailer: git-send-email 2.6.3 In-Reply-To: <1467968701-15620-1-git-send-email-zyw@rock-chips.com> References: <1467968701-15620-1-git-send-email-zyw@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Reference the power domain incase dw-mipi power down when in use. Signed-off-by: Chris Zhong --- drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c index 100da01..15ba796 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -293,6 +294,7 @@ struct dw_mipi_dsi { struct clk *pclk; struct clk *phy_cfg_clk; + int dpms_mode; unsigned int lane_mbps; /* per lane */ u32 channel; u32 lanes; @@ -844,6 +846,11 @@ static void dw_mipi_dsi_encoder_mode_set(struct drm_encoder *encoder, struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder); int ret; + if (dsi->dpms_mode == DRM_MODE_DPMS_ON) + return; + + pm_runtime_get_sync(dsi->dev); + dsi->mode = adjusted_mode; ret = dw_mipi_dsi_get_lane_bps(dsi); @@ -876,6 +883,9 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder) { struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder); + if (dsi->dpms_mode != DRM_MODE_DPMS_ON) + return; + drm_panel_disable(dsi->panel); if (clk_prepare_enable(dsi->pclk)) { @@ -896,6 +906,8 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder) dw_mipi_dsi_set_mode(dsi, DW_MIPI_DSI_CMD_MODE); dw_mipi_dsi_disable(dsi); clk_disable_unprepare(dsi->pclk); + pm_runtime_put(dsi->dev); + dsi->dpms_mode = DRM_MODE_DPMS_OFF; } static void dw_mipi_dsi_encoder_commit(struct drm_encoder *encoder) @@ -929,6 +941,7 @@ static void dw_mipi_dsi_encoder_commit(struct drm_encoder *encoder) regmap_write(dsi->grf_regmap, pdata->grf_switch_reg, val); dev_dbg(dsi->dev, "vop %s output to dsi0\n", (mux) ? "LIT" : "BIG"); + dsi->dpms_mode = DRM_MODE_DPMS_ON; } static int @@ -1150,6 +1163,7 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master, dsi->dev = dev; dsi->pdata = pdata; + dsi->dpms_mode = DRM_MODE_DPMS_OFF; ret = rockchip_mipi_parse_dt(dsi); if (ret) @@ -1195,6 +1209,8 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master, dev_set_drvdata(dev, dsi); + pm_runtime_enable(dev); + dsi->dsi_host.ops = &dw_mipi_dsi_host_ops; dsi->dsi_host.dev = dev; return mipi_dsi_host_register(&dsi->dsi_host); @@ -1210,6 +1226,7 @@ static void dw_mipi_dsi_unbind(struct device *dev, struct device *master, struct dw_mipi_dsi *dsi = dev_get_drvdata(dev); mipi_dsi_host_unregister(&dsi->dsi_host); + pm_runtime_disable(dev); clk_disable_unprepare(dsi->pllref_clk); } -- 2.6.3