Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

Open Menu /drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c 
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.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 "hdmi.h"

static void hdmi_phy_8x60_powerup(struct hdmi_phy *phy,
		unsigned long int pixclock)
{
	/* De-serializer delay D/C for non-lbk mode: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG0,
		       HDMI_8x60_PHY_REG0_DESER_DEL_CTRL(3));

	if (pixclock == 27000000) {
		/* video_format == HDMI_VFRMT_720x480p60_16_9 */
		hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG1,
			       HDMI_8x60_PHY_REG1_DTEST_MUX_SEL(5) |
			       HDMI_8x60_PHY_REG1_OUTVOL_SWING_CTRL(3));
	} else {
		hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG1,
			       HDMI_8x60_PHY_REG1_DTEST_MUX_SEL(5) |
			       HDMI_8x60_PHY_REG1_OUTVOL_SWING_CTRL(4));
	}

	/* No matter what, start from the power down mode: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_PD_PWRGEN |
		       HDMI_8x60_PHY_REG2_PD_PLL |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
		       HDMI_8x60_PHY_REG2_PD_DESER);

	/* Turn PowerGen on: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_PD_PLL |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
		       HDMI_8x60_PHY_REG2_PD_DESER);

	/* Turn PLL power on: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
		       HDMI_8x60_PHY_REG2_PD_DESER);

	/* Write to HIGH after PLL power down de-assert: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG3,
		       HDMI_8x60_PHY_REG3_PLL_ENABLE);

	/* ASIC power on; PHY REG9 = 0 */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG9, 0);

	/* Enable PLL lock detect, PLL lock det will go high after lock
	 * Enable the re-time logic
	 */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG12,
		       HDMI_8x60_PHY_REG12_RETIMING_EN |
		       HDMI_8x60_PHY_REG12_PLL_LOCK_DETECT_EN);

	/* Drivers are on: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_PD_DESER);

	/* If the RX detector is needed: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_RCV_SENSE_EN |
		       HDMI_8x60_PHY_REG2_PD_DESER);

	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG4, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG5, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG6, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG7, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG8, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG9, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG10, 0);
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG11, 0);

	/* If we want to use lock enable based on counting: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG12,
		       HDMI_8x60_PHY_REG12_RETIMING_EN |
		       HDMI_8x60_PHY_REG12_PLL_LOCK_DETECT_EN |
		       HDMI_8x60_PHY_REG12_FORCE_LOCK);
}

static void hdmi_phy_8x60_powerdown(struct hdmi_phy *phy)
{
	/* Assert RESET PHY from controller */
	hdmi_phy_write(phy, REG_HDMI_PHY_CTRL,
		       HDMI_PHY_CTRL_SW_RESET);
	udelay(10);
	/* De-assert RESET PHY from controller */
	hdmi_phy_write(phy, REG_HDMI_PHY_CTRL, 0);
	/* Turn off Driver */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
		       HDMI_8x60_PHY_REG2_PD_DESER);
	udelay(10);
	/* Disable PLL */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG3, 0);
	/* Power down PHY, but keep RX-sense: */
	hdmi_phy_write(phy, REG_HDMI_8x60_PHY_REG2,
		       HDMI_8x60_PHY_REG2_RCV_SENSE_EN |
		       HDMI_8x60_PHY_REG2_PD_PWRGEN |
		       HDMI_8x60_PHY_REG2_PD_PLL |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
		       HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
		       HDMI_8x60_PHY_REG2_PD_DESER);
}

const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg = {
	.type = MSM_HDMI_PHY_8x60,
	.powerup = hdmi_phy_8x60_powerup,
	.powerdown = hdmi_phy_8x60_powerdown,
};