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path: root/drivers/video/omap2/dss/hdmi_panel.c
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Diffstat (limited to 'drivers/video/omap2/dss/hdmi_panel.c')
-rw-r--r--drivers/video/omap2/dss/hdmi_panel.c414
1 files changed, 0 insertions, 414 deletions
diff --git a/drivers/video/omap2/dss/hdmi_panel.c b/drivers/video/omap2/dss/hdmi_panel.c
deleted file mode 100644
index dfb8eda81b61..000000000000
--- a/drivers/video/omap2/dss/hdmi_panel.c
+++ /dev/null
@@ -1,414 +0,0 @@
-/*
- * hdmi_panel.c
- *
- * HDMI library support functions for TI OMAP4 processors.
- *
- * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
- * Authors: Mythri P k <mythripk@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/mutex.h>
-#include <linux/module.h>
-#include <video/omapdss.h>
-#include <linux/slab.h>
-
-#include "dss.h"
-
-static struct {
- /* This protects the panel ops, mainly when accessing the HDMI IP. */
- struct mutex lock;
-#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
- /* This protects the audio ops, specifically. */
- spinlock_t audio_lock;
-#endif
-} hdmi;
-
-
-static int hdmi_panel_probe(struct omap_dss_device *dssdev)
-{
- /* Initialize default timings to VGA in DVI mode */
- const struct omap_video_timings default_timings = {
- .x_res = 640,
- .y_res = 480,
- .pixel_clock = 25175,
- .hsw = 96,
- .hfp = 16,
- .hbp = 48,
- .vsw = 2,
- .vfp = 11,
- .vbp = 31,
-
- .vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
- .hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
-
- .interlace = false,
- };
-
- DSSDBG("ENTER hdmi_panel_probe\n");
-
- dssdev->panel.timings = default_timings;
-
- DSSDBG("hdmi_panel_probe x_res= %d y_res = %d\n",
- dssdev->panel.timings.x_res,
- dssdev->panel.timings.y_res);
-
- omapdss_hdmi_display_set_timing(dssdev, &dssdev->panel.timings);
-
- return 0;
-}
-
-static void hdmi_panel_remove(struct omap_dss_device *dssdev)
-{
-
-}
-
-#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
-static int hdmi_panel_audio_enable(struct omap_dss_device *dssdev)
-{
- unsigned long flags;
- int r;
-
- mutex_lock(&hdmi.lock);
- spin_lock_irqsave(&hdmi.audio_lock, flags);
-
- /* enable audio only if the display is active and supports audio */
- if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE ||
- !hdmi_mode_has_audio()) {
- DSSERR("audio not supported or display is off\n");
- r = -EPERM;
- goto err;
- }
-
- r = hdmi_audio_enable();
-
- if (!r)
- dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
-
-err:
- spin_unlock_irqrestore(&hdmi.audio_lock, flags);
- mutex_unlock(&hdmi.lock);
- return r;
-}
-
-static void hdmi_panel_audio_disable(struct omap_dss_device *dssdev)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hdmi.audio_lock, flags);
-
- hdmi_audio_disable();
-
- dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED;
-
- spin_unlock_irqrestore(&hdmi.audio_lock, flags);
-}
-
-static int hdmi_panel_audio_start(struct omap_dss_device *dssdev)
-{
- unsigned long flags;
- int r;
-
- spin_lock_irqsave(&hdmi.audio_lock, flags);
- /*
- * No need to check the panel state. It was checked when trasitioning
- * to AUDIO_ENABLED.
- */
- if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED) {
- DSSERR("audio start from invalid state\n");
- r = -EPERM;
- goto err;
- }
-
- r = hdmi_audio_start();
-
- if (!r)
- dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING;
-
-err:
- spin_unlock_irqrestore(&hdmi.audio_lock, flags);
- return r;
-}
-
-static void hdmi_panel_audio_stop(struct omap_dss_device *dssdev)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hdmi.audio_lock, flags);
-
- hdmi_audio_stop();
- dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED;
-
- spin_unlock_irqrestore(&hdmi.audio_lock, flags);
-}
-
-static bool hdmi_panel_audio_supported(struct omap_dss_device *dssdev)
-{
- bool r = false;
-
- mutex_lock(&hdmi.lock);
-
- if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
- goto err;
-
- if (!hdmi_mode_has_audio())
- goto err;
-
- r = true;
-err:
- mutex_unlock(&hdmi.lock);
- return r;
-}
-
-static int hdmi_panel_audio_config(struct omap_dss_device *dssdev,
- struct omap_dss_audio *audio)
-{
- unsigned long flags;
- int r;
-
- mutex_lock(&hdmi.lock);
- spin_lock_irqsave(&hdmi.audio_lock, flags);
-
- /* config audio only if the display is active and supports audio */
- if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE ||
- !hdmi_mode_has_audio()) {
- DSSERR("audio not supported or display is off\n");
- r = -EPERM;
- goto err;
- }
-
- r = hdmi_audio_config(audio);
-
- if (!r)
- dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED;
-
-err:
- spin_unlock_irqrestore(&hdmi.audio_lock, flags);
- mutex_unlock(&hdmi.lock);
- return r;
-}
-
-#else
-static int hdmi_panel_audio_enable(struct omap_dss_device *dssdev)
-{
- return -EPERM;
-}
-
-static void hdmi_panel_audio_disable(struct omap_dss_device *dssdev)
-{
-}
-
-static int hdmi_panel_audio_start(struct omap_dss_device *dssdev)
-{
- return -EPERM;
-}
-
-static void hdmi_panel_audio_stop(struct omap_dss_device *dssdev)
-{
-}
-
-static bool hdmi_panel_audio_supported(struct omap_dss_device *dssdev)
-{
- return false;
-}
-
-static int hdmi_panel_audio_config(struct omap_dss_device *dssdev,
- struct omap_dss_audio *audio)
-{
- return -EPERM;
-}
-#endif
-
-static int hdmi_panel_enable(struct omap_dss_device *dssdev)
-{
- int r = 0;
- DSSDBG("ENTER hdmi_panel_enable\n");
-
- mutex_lock(&hdmi.lock);
-
- if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
- r = -EINVAL;
- goto err;
- }
-
- omapdss_hdmi_display_set_timing(dssdev, &dssdev->panel.timings);
-
- r = omapdss_hdmi_display_enable(dssdev);
- if (r) {
- DSSERR("failed to power on\n");
- goto err;
- }
-
- dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
-
-err:
- mutex_unlock(&hdmi.lock);
-
- return r;
-}
-
-static void hdmi_panel_disable(struct omap_dss_device *dssdev)
-{
- mutex_lock(&hdmi.lock);
-
- if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
- /*
- * TODO: notify audio users that the display was disabled. For
- * now, disable audio locally to not break our audio state
- * machine.
- */
- hdmi_panel_audio_disable(dssdev);
- omapdss_hdmi_display_disable(dssdev);
- }
-
- dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
-
- mutex_unlock(&hdmi.lock);
-}
-
-static void hdmi_get_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
-{
- mutex_lock(&hdmi.lock);
-
- *timings = dssdev->panel.timings;
-
- mutex_unlock(&hdmi.lock);
-}
-
-static void hdmi_set_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
-{
- DSSDBG("hdmi_set_timings\n");
-
- mutex_lock(&hdmi.lock);
-
- /*
- * TODO: notify audio users that there was a timings change. For
- * now, disable audio locally to not break our audio state machine.
- */
- hdmi_panel_audio_disable(dssdev);
-
- omapdss_hdmi_display_set_timing(dssdev, timings);
- dssdev->panel.timings = *timings;
-
- mutex_unlock(&hdmi.lock);
-}
-
-static int hdmi_check_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
-{
- int r = 0;
-
- DSSDBG("hdmi_check_timings\n");
-
- mutex_lock(&hdmi.lock);
-
- r = omapdss_hdmi_display_check_timing(dssdev, timings);
-
- mutex_unlock(&hdmi.lock);
- return r;
-}
-
-static int hdmi_read_edid(struct omap_dss_device *dssdev, u8 *buf, int len)
-{
- int r;
- bool need_enable;
-
- mutex_lock(&hdmi.lock);
-
- need_enable = dssdev->state == OMAP_DSS_DISPLAY_DISABLED;
-
- if (need_enable) {
- r = omapdss_hdmi_core_enable(dssdev);
- if (r)
- goto err;
- }
-
- r = omapdss_hdmi_read_edid(buf, len);
-
- if (need_enable)
- omapdss_hdmi_core_disable(dssdev);
-err:
- mutex_unlock(&hdmi.lock);
-
- return r;
-}
-
-static bool hdmi_detect(struct omap_dss_device *dssdev)
-{
- int r;
- bool need_enable;
-
- mutex_lock(&hdmi.lock);
-
- need_enable = dssdev->state == OMAP_DSS_DISPLAY_DISABLED;
-
- if (need_enable) {
- r = omapdss_hdmi_core_enable(dssdev);
- if (r)
- goto err;
- }
-
- r = omapdss_hdmi_detect();
-
- if (need_enable)
- omapdss_hdmi_core_disable(dssdev);
-err:
- mutex_unlock(&hdmi.lock);
-
- return r;
-}
-
-static struct omap_dss_driver hdmi_driver = {
- .probe = hdmi_panel_probe,
- .remove = hdmi_panel_remove,
- .enable = hdmi_panel_enable,
- .disable = hdmi_panel_disable,
- .get_timings = hdmi_get_timings,
- .set_timings = hdmi_set_timings,
- .check_timings = hdmi_check_timings,
- .read_edid = hdmi_read_edid,
- .detect = hdmi_detect,
- .audio_enable = hdmi_panel_audio_enable,
- .audio_disable = hdmi_panel_audio_disable,
- .audio_start = hdmi_panel_audio_start,
- .audio_stop = hdmi_panel_audio_stop,
- .audio_supported = hdmi_panel_audio_supported,
- .audio_config = hdmi_panel_audio_config,
- .driver = {
- .name = "hdmi_panel",
- .owner = THIS_MODULE,
- },
-};
-
-int hdmi_panel_init(void)
-{
- mutex_init(&hdmi.lock);
-
-#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
- spin_lock_init(&hdmi.audio_lock);
-#endif
-
- return omap_dss_register_driver(&hdmi_driver);
-}
-
-void hdmi_panel_exit(void)
-{
- omap_dss_unregister_driver(&hdmi_driver);
-
-}
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