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drm: bridge/dw_hdmi: combine hdmi_set_clock_regenerator_n() and hdmi_regenerate_cts()

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Combine these two functions into a single implementation.  These two
functions are called consecutively anyway.  Idea from a patch by
Yakir Yang.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2015-01-31 14:50:23 +00:00
parent c517d838eb
commit 351e1354fc
1 changed files with 6 additions and 10 deletions
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16
drivers/gpu/drm/bridge/dw_hdmi.c
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@ -177,19 +177,16 @@ static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg,
hdmi_modb(hdmi, data << shift, mask, reg);
}
static void hdmi_set_clock_regenerator_n(struct dw_hdmi *hdmi,
unsigned int value)
static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts,
unsigned int n)
{
hdmi_writeb(hdmi, value & 0xff, HDMI_AUD_N1);
hdmi_writeb(hdmi, (value >> 8) & 0xff, HDMI_AUD_N2);
hdmi_writeb(hdmi, (value >> 16) & 0x0f, HDMI_AUD_N3);
hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1);
hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3);
/* nshift factor = 0 */
hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);
}
static void hdmi_regenerate_cts(struct dw_hdmi *hdmi, unsigned int cts)
{
/* Must be set/cleared first */
hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
@ -355,8 +352,7 @@ static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
__func__, hdmi->sample_rate, hdmi->ratio,
pixel_clk, clk_n, clk_cts);
hdmi_set_clock_regenerator_n(hdmi, clk_n);
hdmi_regenerate_cts(hdmi, clk_cts);
hdmi_set_cts_n(hdmi, clk_cts, clk_n);
}
static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi)