Release 4.17 drivers/gpu/drm/omapdrm/dss/hdmi4.c

/*
 * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
 *
 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
 * Authors: Yong Zhi
 *      Mythri pk <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/>.
 */


#define DSS_SUBSYS_NAME "HDMI"

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/component.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <sound/omap-hdmi-audio.h>
#include <media/cec.h>

#include "omapdss.h"
#include "hdmi4_core.h"
#include "hdmi4_cec.h"
#include "dss.h"
#include "hdmi.h"



static int hdmi_runtime_get(struct omap_hdmi *hdmi)
{
	int r;

	DSSDBG("hdmi_runtime_get\n");

	r = pm_runtime_get_sync(&hdmi->pdev->dev);
	WARN_ON(r < 0);
	if (r < 0)
		return r;

	return 0;
}

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Mythri P K
37
74.00%
2
40.00%
Archit Taneja
6
12.00%
1
20.00%
Laurent Pinchart
5
10.00%
1
20.00%
Tomi Valkeinen
2
4.00%
1
20.00%
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50
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5
100.00%



static void hdmi_runtime_put(struct omap_hdmi *hdmi)
{
	int r;

	DSSDBG("hdmi_runtime_put\n");

	r = pm_runtime_put_sync(&hdmi->pdev->dev);
	WARN_ON(r < 0 && r != -ENOSYS);
}

Contributors
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Mythri P K
32
74.42%
2
40.00%
Tomi Valkeinen
6
13.95%
2
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Laurent Pinchart
5
11.63%
1
20.00%
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43
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static irqreturn_t hdmi_irq_handler(int irq, void *data)
{
	struct omap_hdmi *hdmi = data;
	struct hdmi_wp_data *wp = &hdmi->wp;
	u32 irqstatus;

	irqstatus = hdmi_wp_get_irqstatus(wp);
	hdmi_wp_set_irqstatus(wp, irqstatus);

	if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
			irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
		/*
                 * If we get both connect and disconnect interrupts at the same
                 * time, turn off the PHY, clear interrupts, and restart, which
                 * raises connect interrupt if a cable is connected, or nothing
                 * if cable is not connected.
                 */
		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);

		hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
				HDMI_IRQ_LINK_DISCONNECT);

		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
	} else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
	} else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
		hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
	}
	if (irqstatus & HDMI_IRQ_CORE) {
		u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);

		hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
		if (intr4 & 8)
			hdmi4_cec_irq(&hdmi->core);
	}

	return IRQ_HANDLED;
}

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static int hdmi_init_regulator(struct omap_hdmi *hdmi)
{
	struct regulator *reg;

	if (hdmi->vdda_reg != NULL)
		return 0;

	reg = devm_regulator_get(&hdmi->pdev->dev, "vdda");

	if (IS_ERR(reg)) {
		if (PTR_ERR(reg) != -EPROBE_DEFER)
			DSSERR("can't get VDDA regulator\n");
		return PTR_ERR(reg);
	}

	hdmi->vdda_reg = reg;

	return 0;
}

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Tomi Valkeinen
67
83.75%
7
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Laurent Pinchart
7
8.75%
1
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Mythri P K
4
5.00%
1
10.00%
Jyri Sarha
2
2.50%
1
10.00%
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80
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10
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static int hdmi_power_on_core(struct omap_hdmi *hdmi)
{
	int r;

	if (hdmi->core.core_pwr_cnt++)
		return 0;

	r = regulator_enable(hdmi->vdda_reg);
	if (r)
		goto err_reg_enable;

	r = hdmi_runtime_get(hdmi);
	if (r)
		goto err_runtime_get;

	hdmi4_core_powerdown_disable(&hdmi->core);

	/* Make selection of HDMI in DSS */
	dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);

	hdmi->core_enabled = true;

	return 0;

err_runtime_get:
	regulator_disable(hdmi->vdda_reg);
err_reg_enable:
	hdmi->core.core_pwr_cnt--;

	return r;
}

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Tomi Valkeinen
47
45.19%
5
41.67%
Hans Verkuil
29
27.88%
2
16.67%
Laurent Pinchart
15
14.42%
2
16.67%
Mythri P K
11
10.58%
2
16.67%
Jyri Sarha
2
1.92%
1
8.33%
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104
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12
100.00%



static void hdmi_power_off_core(struct omap_hdmi *hdmi)
{
	if (--hdmi->core.core_pwr_cnt)
		return;

	hdmi->core_enabled = false;

	hdmi_runtime_put(hdmi);
	regulator_disable(hdmi->vdda_reg);
}

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Tomi Valkeinen
21
53.85%
2
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Hans Verkuil
9
23.08%
1
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Laurent Pinchart
8
20.51%
1
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Jyri Sarha
1
2.56%
1
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39
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5
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static int hdmi_power_on_full(struct omap_hdmi *hdmi)
{
	int r;
	struct videomode *vm;
	struct hdmi_wp_data *wp = &hdmi->wp;
	struct dss_pll_clock_info hdmi_cinfo = { 0 };
	unsigned int pc;

	r = hdmi_power_on_core(hdmi);
	if (r)
		return r;

	/* disable and clear irqs */
	hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
	hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);

	vm = &hdmi->cfg.vm;

	DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
	       vm->vactive);

	pc = vm->pixelclock;
	if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
		pc *= 2;

	/* DSS_HDMI_TCLK is bitclk / 10 */
	pc *= 10;

	dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
		pc, &hdmi_cinfo);

	r = dss_pll_enable(&hdmi->pll.pll);
	if (r) {
		DSSERR("Failed to enable PLL\n");
		goto err_pll_enable;
	}

	r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
	if (r) {
		DSSERR("Failed to configure PLL\n");
		goto err_pll_cfg;
	}

	r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
		hdmi_cinfo.clkout[0]);
	if (r) {
		DSSDBG("Failed to configure PHY\n");
		goto err_phy_cfg;
	}

	r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
	if (r)
		goto err_phy_pwr;

	hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);

	/* tv size */
	dss_mgr_set_timings(&hdmi->output, vm);

	r = dss_mgr_enable(&hdmi->output);
	if (r)
		goto err_mgr_enable;

	r = hdmi_wp_video_start(&hdmi->wp);
	if (r)
		goto err_vid_enable;

	hdmi_wp_set_irqenable(wp,
		HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);

	return 0;

err_vid_enable:
	dss_mgr_disable(&hdmi->output);
err_mgr_enable:
	hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
err_phy_pwr:
err_phy_cfg:
err_pll_cfg:
	dss_pll_disable(&hdmi->pll.pll);
err_pll_enable:
	hdmi_power_off_core(hdmi);
	return -EIO;
}

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Tomi Valkeinen
214
57.37%
13
39.39%
Mythri P K
72
19.30%
4
12.12%
Laurent Pinchart
30
8.04%
3
9.09%
Archit Taneja
28
7.51%
5
15.15%
Peter Ujfalusi
15
4.02%
5
15.15%
Ricardo Neri
10
2.68%
2
6.06%
Hans Verkuil
4
1.07%
1
3.03%
Total
373
100.00%
33
100.00%



static void hdmi_power_off_full(struct omap_hdmi *hdmi)
{
	hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE);

	hdmi_wp_video_stop(&hdmi->wp);

	dss_mgr_disable(&hdmi->output);

	hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);

	dss_pll_disable(&hdmi->pll.pll);

	hdmi_power_off_core(hdmi);
}

Contributors
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Tomi Valkeinen
23
36.51%
5
35.71%
Mythri P K
19
30.16%
3
21.43%
Laurent Pinchart
11
17.46%
2
14.29%
Archit Taneja
8
12.70%
3
21.43%
Hans Verkuil
2
3.17%
1
7.14%
Total
63
100.00%
14
100.00%



static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
				     struct videomode *vm)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	if (!dispc_mgr_timings_ok(hdmi->dss->dispc, dssdev->dispc_channel, vm))
		return -EINVAL;

	return 0;
}

Contributors
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Mythri P K
22
43.14%
1
12.50%
Laurent Pinchart
16
31.37%
2
25.00%
Archit Taneja
7
13.73%
1
12.50%
Peter Ujfalusi
3
5.88%
2
25.00%
Tomi Valkeinen
3
5.88%
2
25.00%
Total
51
100.00%
8
100.00%



static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
				    struct videomode *vm)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	mutex_lock(&hdmi->lock);

	hdmi->cfg.vm = *vm;

	dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);

	mutex_unlock(&hdmi->lock);
}

Contributors
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Archit Taneja
28
43.75%
3
30.00%
Laurent Pinchart
19
29.69%
2
20.00%
Mythri P K
9
14.06%
1
10.00%
Peter Ujfalusi
5
7.81%
2
20.00%
Tomi Valkeinen
3
4.69%
2
20.00%
Total
64
100.00%
10
100.00%



static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
				     struct videomode *vm)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	*vm = hdmi->cfg.vm;
}

Contributors
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Tomi Valkeinen
17
48.57%
3
42.86%
Laurent Pinchart
11
31.43%
1
14.29%
Peter Ujfalusi
4
11.43%
2
28.57%
Archit Taneja
3
8.57%
1
14.29%
Total
35
100.00%
7
100.00%



static int hdmi_dump_regs(struct seq_file *s, void *p)
{
	struct omap_hdmi *hdmi = s->private;

	mutex_lock(&hdmi->lock);

	if (hdmi_runtime_get(hdmi)) {
		mutex_unlock(&hdmi->lock);
		return 0;
	}

	hdmi_wp_dump(&hdmi->wp, s);
	hdmi_pll_dump(&hdmi->pll, s);
	hdmi_phy_dump(&hdmi->phy, s);
	hdmi4_core_dump(&hdmi->core, s);

	hdmi_runtime_put(hdmi);
	mutex_unlock(&hdmi->lock);
	return 0;
}

Contributors
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Mythri P K
57
52.78%
1
11.11%
Laurent Pinchart
33
30.56%
2
22.22%
Wei Yongjun
9
8.33%
1
11.11%
Archit Taneja
8
7.41%
4
44.44%
Tomi Valkeinen
1
0.93%
1
11.11%
Total
108
100.00%
9
100.00%



static int read_edid(struct omap_hdmi *hdmi, u8 *buf, int len)
{
	int r;

	mutex_lock(&hdmi->lock);

	r = hdmi_runtime_get(hdmi);
	BUG_ON(r);

	r = hdmi4_read_edid(&hdmi->core,  buf, len);

	hdmi_runtime_put(hdmi);
	mutex_unlock(&hdmi->lock);

	return r;
}

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Tomi Valkeinen
55
77.46%
2
50.00%
Laurent Pinchart
14
19.72%
1
25.00%
Archit Taneja
2
2.82%
1
25.00%
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71
100.00%
4
100.00%



static void hdmi_start_audio_stream(struct omap_hdmi *hd)
{
	hdmi_wp_audio_enable(&hd->wp, true);
	hdmi4_audio_start(&hd->core, &hd->wp);
}

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34
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34
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static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
{
	hdmi4_audio_stop(&hd->core, &hd->wp);
	hdmi_wp_audio_enable(&hd->wp, false);
}

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static int hdmi_display_enable(struct omap_dss_device *dssdev)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
	unsigned long flags;
	int r = 0;

	DSSDBG("ENTER hdmi_display_enable\n");

	mutex_lock(&hdmi->lock);

	if (!dssdev->dispc_channel_connected) {
		DSSERR("failed to enable display: no output/manager\n");
		r = -ENODEV;
		goto err0;
	}

	r = hdmi_power_on_full(hdmi);
	if (r) {
		DSSERR("failed to power on device\n");
		goto err0;
	}

	if (hdmi->audio_configured) {
		r = hdmi4_audio_config(&hdmi->core, &hdmi->wp,
				       &hdmi->audio_config,
				       hdmi->cfg.vm.pixelclock);
		if (r) {
			DSSERR("Error restoring audio configuration: %d", r);
			hdmi->audio_abort_cb(&hdmi->pdev->dev);
			hdmi->audio_configured = false;
		}
	}

	spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
	if (hdmi->audio_configured && hdmi->audio_playing)
		hdmi_start_audio_stream(hdmi);
	hdmi->display_enabled = true;
	spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);

	mutex_unlock(&hdmi->lock);
	return 0;

err0:
	mutex_unlock(&hdmi->lock);
	return r;
}

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Jyri Sarha
98
44.95%
2
16.67%
Mythri P K
48
22.02%
1
8.33%
Tomi Valkeinen
46
21.10%
6
50.00%
Laurent Pinchart
24
11.01%
1
8.33%
Archit Taneja
1
0.46%
1
8.33%
Peter Ujfalusi
1
0.46%
1
8.33%
Total
218
100.00%
12
100.00%



static void hdmi_display_disable(struct omap_dss_device *dssdev)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
	unsigned long flags;

	DSSDBG("Enter hdmi_display_disable\n");

	mutex_lock(&hdmi->lock);

	spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
	hdmi_stop_audio_stream(hdmi);
	hdmi->display_enabled = false;
	spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);

	hdmi_power_off_full(hdmi);

	mutex_unlock(&hdmi->lock);
}

Contributors
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Jyri Sarha
32
39.02%
2
33.33%
Mythri P K
31
37.80%
1
16.67%
Laurent Pinchart
16
19.51%
1
16.67%
Tomi Valkeinen
3
3.66%
2
33.33%
Total
82
100.00%
6
100.00%



int hdmi4_core_enable(struct hdmi_core_data *core)
{
	struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
	int r = 0;

	DSSDBG("ENTER omapdss_hdmi4_core_enable\n");

	mutex_lock(&hdmi->lock);

	r = hdmi_power_on_core(hdmi);
	if (r) {
		DSSERR("failed to power on device\n");
		goto err0;
	}

	mutex_unlock(&hdmi->lock);
	return 0;

err0:
	mutex_unlock(&hdmi->lock);
	return r;
}

Contributors
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Tomi Valkeinen
65
73.86%
1
33.33%
Laurent Pinchart
21
23.86%
1
33.33%
Hans Verkuil
2
2.27%
1
33.33%
Total
88
100.00%
3
100.00%



void hdmi4_core_disable(struct hdmi_core_data *core)
{
	struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);

	DSSDBG("Enter omapdss_hdmi4_core_disable\n");

	mutex_lock(&hdmi->lock);

	hdmi_power_off_core(hdmi);

	mutex_unlock(&hdmi->lock);
}

Contributors
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Tomi Valkeinen
29
56.86%
1
33.33%
Laurent Pinchart
20
39.22%
1
33.33%
Hans Verkuil
2
3.92%
1
33.33%
Total
51
100.00%
3
100.00%



static int hdmi_connect(struct omap_dss_device *dssdev,
		struct omap_dss_device *dst)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
	int r;

	r = hdmi_init_regulator(hdmi);
	if (r)
		return r;

	r = dss_mgr_connect(&hdmi->output, dssdev);
	if (r)
		return r;

	r = omapdss_output_set_device(dssdev, dst);
	if (r) {
		DSSERR("failed to connect output to new device: %s\n",
				dst->name);
		dss_mgr_disconnect(&hdmi->output, dssdev);
		return r;
	}

	return 0;
}

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69
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57.14%
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21
20.59%
2
28.57%
Archit Taneja
12
11.76%
1
14.29%
Total
102
100.00%
7
100.00%



static void hdmi_disconnect(struct omap_dss_device *dssdev,
		struct omap_dss_device *dst)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	WARN_ON(dst != dssdev->dst);

	if (dst != dssdev->dst)
		return;

	omapdss_output_unset_device(dssdev);

	dss_mgr_disconnect(&hdmi->output, dssdev);
}

Contributors
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Tomi Valkeinen
38
64.41%
3
50.00%
Laurent Pinchart
14
23.73%
2
33.33%
Archit Taneja
7
11.86%
1
16.67%
Total
59
100.00%
6
100.00%



static int hdmi_read_edid(struct omap_dss_device *dssdev,
		u8 *edid, int len)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
	bool need_enable;
	int r;

	need_enable = hdmi->core_enabled == false;

	if (need_enable) {
		r = hdmi4_core_enable(&hdmi->core);
		if (r)
			return r;
	}

	r = read_edid(hdmi, edid, len);
	if (r >= 256)
		hdmi4_cec_set_phys_addr(&hdmi->core,
					cec_get_edid_phys_addr(edid, r, NULL));
	else
		hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
	if (need_enable)
		hdmi4_core_disable(&hdmi->core);

	return r;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
68
54.40%
2
40.00%
Hans Verkuil
34
27.20%
2
40.00%
Laurent Pinchart
23
18.40%
1
20.00%
Total
125
100.00%
5
100.00%



static void hdmi_lost_hotplug(struct omap_dss_device *dssdev)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hans Verkuil
20
64.52%
1
50.00%
Laurent Pinchart
11
35.48%
1
50.00%
Total
31
100.00%
2
100.00%



static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
		const struct hdmi_avi_infoframe *avi)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	hdmi->cfg.infoframe = *avi;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
28
71.79%
1
50.00%
Laurent Pinchart
11
28.21%
1
50.00%
Total
39
100.00%
2
100.00%



static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
		bool hdmi_mode)
{
	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);

	hdmi->cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
28
71.79%
1
50.00%
Laurent Pinchart
11
28.21%
1
50.00%
Total
39
100.00%
2
100.00%


static const struct omapdss_hdmi_ops hdmi_ops = {
	.connect		= hdmi_connect,
	.disconnect		= hdmi_disconnect,

	.enable			= hdmi_display_enable,
	.disable		= hdmi_display_disable,

	.check_timings		= hdmi_display_check_timing,
	.set_timings		= hdmi_display_set_timing,
	.get_timings		= hdmi_display_get_timings,

	.read_edid		= hdmi_read_edid,
	.lost_hotplug		= hdmi_lost_hotplug,
	.set_infoframe		= hdmi_set_infoframe,
	.set_hdmi_mode		= hdmi_set_hdmi_mode,
};



static void hdmi_init_output(struct omap_hdmi *hdmi)
{
	struct omap_dss_device *out = &hdmi->output;

	out->dev = &hdmi->pdev->dev;
	out->id = OMAP_DSS_OUTPUT_HDMI;
	out->output_type = OMAP_DISPLAY_TYPE_HDMI;
	out->name = "hdmi.0";
	out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
	out->ops.hdmi = &hdmi_ops;
	out->owner = THIS_MODULE;

	omapdss_register_output(out);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
71
93.42%
1
50.00%
Laurent Pinchart
5
6.58%
1
50.00%
Total
76
100.00%
2
100.00%



static void hdmi_uninit_output(struct omap_hdmi *hdmi)
{
	struct omap_dss_device *out = &hdmi->output;

	omapdss_unregister_output(out);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
15
57.69%
2
50.00%
Archit Taneja
8
30.77%
1
25.00%
Laurent Pinchart
3
11.54%
1
25.00%
Total
26
100.00%
4
100.00%



static int hdmi_probe_of(struct omap_hdmi *hdmi)
{
	struct platform_device *pdev = hdmi->pdev;
	struct device_node *node = pdev->dev.of_node;
	struct device_node *ep;
	int r;

	ep = of_graph_get_endpoint_by_regs(node, 0, 0);
	if (!ep)
		return 0;

	r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
	if (r)
		goto err;

	of_node_put(ep);
	return 0;

err:
	of_node_put(ep);
	return r;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
80
82.47%
1
33.33%
Laurent Pinchart
12
12.37%
1
33.33%
Rob Herring
5
5.15%
1
33.33%
Total
97
100.00%
3
100.00%

/* Audio callbacks */


static int hdmi_audio_startup(struct device *dev,
			      void (*abort_cb)(struct device *dev))
{
	struct omap_hdmi *hd = dev_get_drvdata(dev);

	mutex_lock(&hd->lock);

	WARN_ON(hd->audio_abort_cb != NULL);

	hd->audio_abort_cb = abort_cb;

	mutex_unlock(&hd->lock);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jyri Sarha
67
100.00%
2
100.00%
Total
67
100.00%
2
100.00%



static int hdmi_audio_shutdown(struct device *dev)
{
	struct omap_hdmi *hd = dev_get_drvdata(dev);

	mutex_lock(&hd->lock);
	hd->audio_abort_cb = NULL;
	hd->audio_configured = false;
	hd->audio_playing = false;
	mutex_unlock(&hd->lock);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jyri Sarha
58
100.00%
2
100.00%
Total
58
100.00%
2
100.00%



static int hdmi_audio_start(struct device *dev)
{
	struct omap_hdmi *hd = dev_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&hd->audio_playing_lock, flags);

	if (hd->display_enabled) {
		if (!hdmi_mode_has_audio(&hd->cfg))
			DSSERR("%s: Video mode does not support audio\n",
			       __func__);
		hdmi_start_audio_stream(hd);
	}
	hd->audio_playing = true;

	spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jyri Sarha
85
100.00%
3
100.00%
Total
85
100.00%
3
100.00%



static void hdmi_audio_stop(struct device *dev)
{
	struct omap_hdmi *hd = dev_get_drvdata(dev);
	unsigned long flags;

	WARN_ON(!hdmi_mode_has_audio(&hd->cfg));

	spin_lock_irqsave(&hd->audio_playing_lock, flags);

	if (hd->display_enabled)
		hdmi_stop_audio_stream(hd);
	hd->audio_playing = false;

	spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jyri Sarha
74
100.00%
2
100.00%
Total
74
100.00%
2
100.00%



static int hdmi_audio_config(struct device *dev,
			     struct omap_dss_audio *dss_audio)
{
	struct omap_hdmi *hd = dev_get_drvdata(dev);
	int ret = 0;

	mutex_lock(&hd->lock);

	if (hd->display_enabled) {
		ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
					 hd->cfg.vm.pixelclock);
		if (ret)
			goto out;
	}

	hd->audio_configured = true;
	hd->audio_config = *dss_audio;
out:
	mutex_unlock(&hd->lock);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jyri Sarha
102
97.14%
3
60.00%
Tomi Valkeinen
2
1.90%
1
20.00%
Peter Ujfalusi
1
0.95%
1
20.00%
Total
105
100.00%
5
100.00%


static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
	.audio_startup = hdmi_audio_startup,
	.audio_shutdown = hdmi_audio_shutdown,
	.audio_start = hdmi_audio_start,
	.audio_stop = hdmi_audio_stop,
	.audio_config = hdmi_audio_config,
};



static int hdmi_audio_register(struct omap_hdmi *hdmi)
{
	struct omap_hdmi_audio_pdata pdata = {
		.dev = &hdmi->pdev->dev,
		.version = 4,
		.audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
		.ops = &hdmi_audio_ops,
        };

	hdmi->audio_pdev = platform_device_register_data(
		&hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
		&pdata, sizeof(pdata));

	if (IS_ERR(hdmi->audio_pdev))
		return PTR_ERR(hdmi->audio_pdev);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jyri Sarha
77
81.05%
1
33.33%
Laurent Pinchart
18
18.95%
2
66.67%
Total
95
100.00%
3
100.00%

/* HDMI HW IP initialisation */


static int hdmi4_bind(struct device *dev, struct device *master, void *data)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct dss_device *dss = dss_get_device(master);
	struct omap_hdmi *hdmi;
	int r;
	int irq;

	hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
	if (!hdmi)
		return -ENOMEM;

	hdmi->pdev = pdev;
	hdmi->dss = dss;
	dev_set_drvdata(&pdev->dev, hdmi);

	mutex_init(&hdmi->lock);
	spin_lock_init(&hdmi->audio_playing_lock);

	r = hdmi_probe_of(hdmi);
	if (r)
		goto err_free;

	r = hdmi_wp_init(pdev, &hdmi->wp, 4);
	if (r)
		goto err_free;

	r = hdmi_pll_init(dss, pdev, &hdmi->pll, &hdmi->wp);
	if (r)
		goto err_free;

	r = hdmi_phy_init(pdev, &hdmi->phy, 4);
	if (r)
		goto err_pll;

	r = hdmi4_core_init(pdev, &hdmi->core);
	if (r)
		goto err_pll;

	r = hdmi4_cec_init(pdev, &hdmi->core, &hdmi->wp);
	if (r)
		goto err_pll;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		DSSERR("platform_get_irq failed\n");
		r = -ENODEV;
		goto err_pll;
	}

	r = devm_request_threaded_irq(&pdev->dev, irq,
			NULL, hdmi_irq_handler,
			IRQF_ONESHOT, "OMAP HDMI", hdmi);
	if (r) {
		DSSERR("HDMI IRQ request failed\n");
		goto err_pll;
	}

	pm_runtime_enable(&pdev->dev);

	hdmi_init_output(hdmi);

	r = hdmi_audio_register(hdmi);
	if (r) {
		DSSERR("Registering HDMI audio failed\n");
		hdmi_uninit_output(hdmi);
		pm_runtime_disable(&pdev->dev);
		return r;
	}

	hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
					       hdmi);

	return 0;

err_pll:
	hdmi_pll_uninit(&hdmi->pll);
err_free:
	kfree(hdmi);
	return r;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
158
40.83%
11
40.74%
Laurent Pinchart
94
24.29%
7
25.93%
Jyri Sarha
49
12.66%
3
11.11%
Archit Taneja
41
10.59%
4
14.81%
Ricardo Neri
24
6.20%
1
3.70%
Hans Verkuil
21
5.43%
1
3.70%
Total
387
100.00%
27
100.00%



static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
{
	struct omap_hdmi *hdmi = dev_get_drvdata(dev);

	dss_debugfs_remove_file(hdmi->debugfs);

	if (hdmi->audio_pdev)
		platform_device_unregister(hdmi->audio_pdev);

	hdmi_uninit_output(hdmi);

	hdmi4_cec_uninit(&hdmi->core);

	hdmi_pll_uninit(&hdmi->pll);

	pm_runtime_disable(dev);

	kfree(hdmi);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
33
40.74%
3
33.33%
Laurent Pinchart
20
24.69%
2
22.22%
Jyri Sarha
11
13.58%
1
11.11%
Hans Verkuil
7
8.64%
1
11.11%
Mythri P K
6
7.41%
1
11.11%
Archit Taneja
4
4.94%
1
11.11%
Total
81
100.00%
9
100.00%


static const struct component_ops hdmi4_component_ops = {
	.bind	= hdmi4_bind,
	.unbind	= hdmi4_unbind,
};



static int hdmi4_probe(struct platform_device *pdev)
{
	return component_add(&pdev->dev, &hdmi4_component_ops);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
23
100.00%
1
100.00%
Total
23
100.00%
1
100.00%



static int hdmi4_remove(struct platform_device *pdev)
{
	component_del(&pdev->dev, &hdmi4_component_ops);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
21
84.00%
1
50.00%
Mythri P K
4
16.00%
1
50.00%
Total
25
100.00%
2
100.00%



static int hdmi_runtime_suspend(struct device *dev)
{
	struct omap_hdmi *hdmi = dev_get_drvdata(dev);

	dispc_runtime_put(hdmi->dss->dispc);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Laurent Pinchart
17
51.52%
1
50.00%
Tomi Valkeinen
16
48.48%
1
50.00%
Total
33
100.00%
2
100.00%



static int hdmi_runtime_resume(struct device *dev)
{
	struct omap_hdmi *hdmi = dev_get_drvdata(dev);
	int r;

	r = dispc_runtime_get(hdmi->dss->dispc);
	if (r < 0)
		return r;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
30
63.83%
2
66.67%
Laurent Pinchart
17
36.17%
1
33.33%
Total
47
100.00%
3
100.00%


static const struct dev_pm_ops hdmi_pm_ops = {
	.runtime_suspend = hdmi_runtime_suspend,
	.runtime_resume = hdmi_runtime_resume,
};


static const struct of_device_id hdmi_of_match[] = {
	{ .compatible = "ti,omap4-hdmi", },
	{},
};


struct platform_driver omapdss_hdmi4hw_driver = {
	.probe		= hdmi4_probe,
	.remove		= hdmi4_remove,
	.driver         = {
		.name   = "omapdss_hdmi",
		.pm	= &hdmi_pm_ops,
		.of_match_table = hdmi_of_match,
		.suppress_bind_attrs = true,
        },
};
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomi Valkeinen
1545
41.77%
53
49.53%
Jyri Sarha
763
20.63%
4
3.74%
Laurent Pinchart
532
14.38%
12
11.21%
Mythri P K
408
11.03%
6
5.61%
Hans Verkuil
201
5.43%
6
5.61%
Archit Taneja
166
4.49%
13
12.15%
Ricardo Neri
34
0.92%
3
2.80%
Peter Ujfalusi
31
0.84%
6
5.61%
Wei Yongjun
9
0.24%
1
0.93%
Rob Herring
8
0.22%
1
0.93%
Andrew F. Davis
2
0.05%
2
1.87%
Total
3699
100.00%
107
100.00%
Directory: drivers/gpu/drm/omapdrm/dss

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