[PATCH v5 32/44] drm/rockchip: inno_hdmi: Remove tmds rate from structure

From: Maxime Ripard <mripard@kernel.org>
To: "Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@gmail.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Emma Anholt" <emma@anholt.net>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Sandy Huang" <hjc@rock-chips.com>,
	"Heiko Stübner" <heiko@sntech.de>, "Chen-Yu Tsai" <wens@csie.org>,
	"Jernej Skrabec" <jernej.skrabec@gmail.com>,
	"Samuel Holland" <samuel@sholland.org>
Cc: Hans Verkuil <hverkuil@xs4all.nl>,
	dri-devel@lists.freedesktop.org,
	 linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
	 linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
	 linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev,
	 Maxime Ripard <mripard@kernel.org>
Subject: [PATCH v5 32/44] drm/rockchip: inno_hdmi: Remove tmds rate from structure
Date: Thu, 07 Dec 2023 16:49:55 +0100	[thread overview]
Message-ID: <20231207-kms-hdmi-connector-state-v5-32-6538e19d634d@kernel.org> (raw)
In-Reply-To: <20231207-kms-hdmi-connector-state-v5-0-6538e19d634d@kernel.org>

The tmds_rate field in the inno_hdmi structure is used mostly to
configure the internal i2c controller divider through a call to the
inno_hdmi_i2c_init() function.

We can simply make that rate an argument to that function, which also
removes a workaround to initialize the divider at probe time when we
don't have a mode yet.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
 drivers/gpu/drm/rockchip/inno_hdmi.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index f05417c6b637..35f44e556fcf 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -50,8 +50,6 @@ struct inno_hdmi {
 
 	struct inno_hdmi_i2c *i2c;
 	struct i2c_adapter *ddc;
-
-	unsigned int tmds_rate;
 };
 
 static struct inno_hdmi *encoder_to_inno_hdmi(struct drm_encoder *encoder)
@@ -155,11 +153,11 @@ static inline void hdmi_modb(struct inno_hdmi *hdmi, u16 offset,
 	hdmi_writeb(hdmi, offset, temp);
 }
 
-static void inno_hdmi_i2c_init(struct inno_hdmi *hdmi)
+static void inno_hdmi_i2c_init(struct inno_hdmi *hdmi, unsigned long long rate)
 {
-	int ddc_bus_freq;
+	unsigned long long ddc_bus_freq = rate >> 2;
 
-	ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE;
+	do_div(ddc_bus_freq, HDMI_SCL_RATE);
 
 	hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF);
 	hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF);
@@ -389,8 +387,7 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
 	 * DCLK_LCDC, so we need to init the TMDS rate to mode pixel
 	 * clock rate, and reconfigure the DDC clock.
 	 */
-	hdmi->tmds_rate = mode->clock * 1000;
-	inno_hdmi_i2c_init(hdmi);
+	inno_hdmi_i2c_init(hdmi, mode->clock * 1000);
 
 	/* Unmute video and audio output */
 	hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
@@ -768,8 +765,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 	 * PCLK_HDMI, so we need to init the TMDS rate to PCLK rate,
 	 * and reconfigure the DDC clock.
 	 */
-	hdmi->tmds_rate = clk_get_rate(hdmi->pclk);
-	inno_hdmi_i2c_init(hdmi);
+	inno_hdmi_i2c_init(hdmi, clk_get_rate(hdmi->pclk));
 
 	ret = inno_hdmi_register(drm, hdmi);
 	if (ret)

-- 
2.43.0


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