From patchwork Tue May 24 05:02:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yakir Yang X-Patchwork-Id: 9132737 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 22A566075E for ; Tue, 24 May 2016 05:02:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1AD3A281E3 for ; Tue, 24 May 2016 05:02:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0FC1E28233; Tue, 24 May 2016 05:02:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EADDB28283 for ; Tue, 24 May 2016 05:02:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932069AbcEXFCi (ORCPT ); Tue, 24 May 2016 01:02:38 -0400 Received: from lucky1.263xmail.com ([211.157.147.132]:46660 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752678AbcEXFCg (ORCPT ); Tue, 24 May 2016 01:02:36 -0400 Received: from ykk?rock-chips.com (unknown [192.168.167.130]) by lucky1.263xmail.com (Postfix) with SMTP id 2DF6963382; Tue, 24 May 2016 13:02:27 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id D1F5C2BE1; Tue, 24 May 2016 13:02:23 +0800 (CST) X-RL-SENDER: ykk@rock-chips.com X-FST-TO: airlied@linux.ie X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: ykk@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: ykk@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 26509EM8XHI; Tue, 24 May 2016 13:02:25 +0800 (CST) From: Yakir Yang To: David Airlie , Inki Dae , Mark Yao , Thierry Reding , Jingoo Han , Rob Herring Cc: Krzysztof Kozlowski , Heiko Stuebner , Douglas Anderson , Daniel Vetter , Javier Martinez Canillas , emil.l.velikov@gmail.com, Dan Carpenter , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, Yakir Yang Subject: [PATCH v2 04/10] drm/bridge: analogix_dp: some rockchip chips need to flip REF_CLK bit setting Date: Tue, 24 May 2016 13:02:23 +0800 Message-Id: <1464066143-22691-1-git-send-email-ykk@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464066086-21967-1-git-send-email-ykk@rock-chips.com> References: <1464066086-21967-1-git-send-email-ykk@rock-chips.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As vendor document indicate, when REF_CLK bit set 0, then DP phy's REF_CLK should switch to 24M source clock. But due to IC PHY layout mistaken, some chips need to flip this bit(like RK3288), and unfortunately they didn't indicate in the DP version register. That's why we have to make this little hack. Signed-off-by: Yakir Yang --- Changes in v2: - new patch in v2 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 6 +++++- drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h | 1 + drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 3 +++ include/drm/bridge/analogix_dp.h | 5 +++++ 4 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index 931a76c..31366bf 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -75,7 +75,11 @@ void analogix_dp_init_analog_param(struct analogix_dp_device *dp) writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_2); if (dp->plat_data && (dp->plat_data->dev_type == ROCKCHIP_DP)) { - writel(REF_CLK_24M, dp->reg_base + ANALOGIX_DP_PLL_REG_1); + reg = REF_CLK_24M; + if (dp->plat_data->subdev_type == RK3288_DP) + reg = ~reg & REF_CLK_MASK; + + writel(reg, dp->reg_base + ANALOGIX_DP_PLL_REG_1); writel(0x95, dp->reg_base + ANALOGIX_DP_PLL_REG_2); writel(0x40, dp->reg_base + ANALOGIX_DP_PLL_REG_3); writel(0x58, dp->reg_base + ANALOGIX_DP_PLL_REG_4); diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h index 88d56ad..cdcc6c5 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h @@ -165,6 +165,7 @@ /* ANALOGIX_DP_PLL_REG_1 */ #define REF_CLK_24M (0x1 << 0) #define REF_CLK_27M (0x0 << 0) +#define REF_CLK_MASK (0x1 << 0) /* ANALOGIX_DP_LANE_MAP */ #define LANE3_MAP_LOGIC_LANE_0 (0x0 << 6) diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 260c43f..29c4105 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -41,6 +41,7 @@ struct rockchip_dp_chip_data { u32 lcdsel_big; u32 lcdsel_lit; u32 lcdsel_mask; + u32 chip_type; }; struct rockchip_dp_device { @@ -281,6 +282,7 @@ static int rockchip_dp_bind(struct device *dev, struct device *master, dp->plat_data.encoder = &dp->encoder; dp->plat_data.dev_type = ROCKCHIP_DP; + dp->plat_data.subdev_type = dp_data->chip_type; dp->plat_data.power_on = rockchip_dp_poweron; dp->plat_data.power_off = rockchip_dp_powerdown; @@ -380,6 +382,7 @@ static const struct rockchip_dp_chip_data rk3288_dp = { .lcdsel_big = 0, .lcdsel_lit = BIT(5), .lcdsel_mask = BIT(21), + .chip_type = RK3288_DP, }; static const struct of_device_id rockchip_dp_dt_ids[] = { diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h index 9e5d013..06c0250 100644 --- a/include/drm/bridge/analogix_dp.h +++ b/include/drm/bridge/analogix_dp.h @@ -18,8 +18,13 @@ enum analogix_dp_devtype { ROCKCHIP_DP, }; +enum analogix_dp_sub_devtype { + RK3288_DP, +}; + struct analogix_dp_plat_data { enum analogix_dp_devtype dev_type; + enum analogix_dp_sub_devtype subdev_type; struct drm_panel *panel; struct drm_encoder *encoder; struct drm_connector *connector;