From: rmk+kernel@arm•linux.org.uk (Russell King)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH RFC 05/11] drm: bridge/dw_hdmi: introduce interface to setting sample rate
Date: Mon, 30 Mar 2015 20:40:21 +0100 [thread overview]
Message-ID: <E1YcfXp-0002ux-PC@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20150330193911.GM24899@n2100.arm.linux.org.uk>
Introduce dw_hdmi_set_sample_rate(), which allows us to configure the
audio sample rate, setting the CTS/N values appropriately.
Signed-off-by: Russell King <rmk+kernel@arm•linux.org.uk>
---
drivers/gpu/drm/bridge/dw_hdmi.c | 10 ++++++++++
include/drm/bridge/dw_hdmi.h | 5 +++++
2 files changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index 06b5583140a8..245d17e58dec 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -366,6 +366,16 @@ static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi)
mutex_unlock(&hdmi->audio_mutex);
}
+void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate)
+{
+ mutex_lock(&hdmi->audio_mutex);
+ hdmi->sample_rate = rate;
+ hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock,
+ hdmi->sample_rate, hdmi->ratio);
+ mutex_unlock(&hdmi->audio_mutex);
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate);
+
/*
* this submodule is responsible for the video data synchronization.
* for example, for RGB 4:4:4 input, the data map is defined as
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 5a4f49005169..424b51f6a215 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -12,6 +12,8 @@
#include <drm/drmP.h>
+struct dw_hdmi;
+
enum {
DW_HDMI_RES_8,
DW_HDMI_RES_10,
@@ -58,4 +60,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
void *data, struct drm_encoder *encoder,
struct resource *iores, int irq,
const struct dw_hdmi_plat_data *plat_data);
+
+void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
+
#endif /* __IMX_HDMI_H__ */
--
1.8.3.1
next prev parent reply other threads:[~2015-03-30 19:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-30 19:39 [RFC 0/11] dw_hdmi cleanups, audio preparation, helpers and ahb audio support Russell King - ARM Linux
2015-03-30 19:40 ` [PATCH RFC 01/11] drm: bridge/dw_hdmi: clean up hdmi_set_clk_regenerator() Russell King
2015-03-31 6:55 ` Yang Kuankuan
2015-03-31 10:35 ` Russell King - ARM Linux
2015-04-01 1:54 ` Yakir
2015-03-30 19:40 ` [PATCH RFC 02/11] drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode() Russell King
[not found] ` <551A629C.5010306@rock-chips.com>
2015-03-31 11:57 ` Russell King - ARM Linux
2015-03-30 19:40 ` [PATCH RFC 03/11] drm: bridge/dw_hdmi: simplify hdmi_config_AVI() a little Russell King
2015-03-30 19:40 ` [PATCH RFC 04/11] drm: bridge/dw_hdmi: remove mhsyncpolarity/mvsyncpolarity/minterlaced Russell King
2015-03-30 19:40 ` Russell King [this message]
2015-03-30 19:40 ` [PATCH RFC 06/11] drm: bridge/dw_hdmi: introduce interfaces to enable and disable audio Russell King
2015-03-31 7:45 ` Yang Kuankuan
2015-03-31 9:15 ` Philipp Zabel
2015-03-30 19:40 ` [PATCH RFC 07/11] drm/edid: add function to help find SADs Russell King
2015-04-01 11:47 ` Jani Nikula
2015-04-01 11:56 ` Russell King - ARM Linux
2015-04-02 10:52 ` [PATCH] drm/edid: add #defines for ELD versions Jani Nikula
2015-03-30 19:40 ` [PATCH RFC 08/11] sound/core: add DRM ELD helper Russell King
2015-03-31 9:12 ` Philipp Zabel
2015-03-30 19:40 ` [PATCH RFC 09/11] sound/core: add IEC958 channel status helper Russell King
2015-03-31 8:30 ` Yang Kuankuan
2015-03-31 9:13 ` Russell King - ARM Linux
2015-04-01 2:04 ` Yakir
2015-04-01 7:58 ` Russell King - ARM Linux
2015-03-31 9:10 ` Philipp Zabel
2015-03-31 9:16 ` Russell King - ARM Linux
2015-03-30 19:40 ` [PATCH RFC 10/11] drm: bridge/dw_hdmi-ahb-audio: add audio driver Russell King
2015-03-30 19:40 ` [PATCH RFC 11/11] drm: bridge/dw_hdmi-ahb-audio: parse ELD from HDMI driver Russell King
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