linux-kernel - [PATCH v3 03/12] drm/rockchip: return a true clock rate to adjusted

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1447904131-29328-4-git-send-email-zyw@rock-chips.com>
Date:	Thu, 19 Nov 2015 11:35:21 +0800
From:	Chris Zhong <zyw@...k-chips.com>
To:	heiko@...ech.de, linux-rockchip@...ts.infradead.org,
	Mark Yao <mark.yao@...k-chips.com>
Cc:	Chris Zhong <zyw@...k-chips.com>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v3 03/12] drm/rockchip: return a true clock rate to adjusted_mode

Sometimes the clock driver can not set a accurate clock_rate for vop,
get the true rate of vop_dclk and set it back to adjusted_mode, since
the mipi dsi driver need to use the clock to make the calculation of
Blanking.

Signed-off-by: Chris Zhong <zyw@...k-chips.com>
---

Changes in v3: None
Changes in v2: None

 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 5d8ae5e..9986b311ed 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1232,6 +1232,12 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,
 	reset_control_deassert(vop->dclk_rst);
 
 	clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
+
+	/*
+	 * Sometimes the clock driver can not set a accurate clock_rate for vop,
+	 * get the true rate of vop_dclk and set it back to adjusted_mode.
+	 */
+	adjusted_mode->clock = clk_get_rate(vop->dclk) / 1000;
 out:
 	ret_clk = clk_enable(vop->dclk);
 	if (ret_clk < 0) {
-- 
2.6.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/