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linux/drivers/video/omap2/dss/hdmi4_core.c
Archit Taneja 08d83e4e17 omapdss: HDMI: move common functions to a separate file 
The OMAP4 HDMI encoder driver(hdmi4.c) contains timings tables, and helper
functions which can be used as is by the OMAP5/DRA7x encoder driver. Move these
to hdmi_common.c so that it's not replicated in the future.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2013-10-09 12:42:37 +03:00

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/*
* ti_hdmi_4xxx_ip.c
*
* HDMI TI81xx, TI38xx, TI OMAP4 etc IP driver Library
* 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/>.
*/
#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/platform_device.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
#include <sound/asound.h>
#include <sound/asoundef.h>
#endif
#include "hdmi4_core.h"
#include "dss_features.h"
#define HDMI_CORE_AV 0x500
static inline void __iomem *hdmi_av_base(struct hdmi_core_data *core)
{
return core->base + HDMI_CORE_AV;
}
static int hdmi_core_ddc_init(struct hdmi_core_data *core)
{
void __iomem *base = core->base;
/* Turn on CLK for DDC */
REG_FLD_MOD(base, HDMI_CORE_AV_DPD, 0x7, 2, 0);
/* IN_PROG */
if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 1) {
/* Abort transaction */
REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xf, 3, 0);
/* IN_PROG */
if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
4, 4, 0) != 0) {
DSSERR("Timeout aborting DDC transaction\n");
return -ETIMEDOUT;
}
}
/* Clk SCL Devices */
REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xA, 3, 0);
/* HDMI_CORE_DDC_STATUS_IN_PROG */
if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
4, 4, 0) != 0) {
DSSERR("Timeout starting SCL clock\n");
return -ETIMEDOUT;
}
/* Clear FIFO */
REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x9, 3, 0);
/* HDMI_CORE_DDC_STATUS_IN_PROG */
if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
4, 4, 0) != 0) {
DSSERR("Timeout clearing DDC fifo\n");
return -ETIMEDOUT;
}
return 0;
}
static int hdmi_core_ddc_edid(struct hdmi_core_data *core,
u8 *pedid, int ext)
{
void __iomem *base = core->base;
u32 i;
char checksum;
u32 offset = 0;
/* HDMI_CORE_DDC_STATUS_IN_PROG */
if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
4, 4, 0) != 0) {
DSSERR("Timeout waiting DDC to be ready\n");
return -ETIMEDOUT;
}
if (ext % 2 != 0)
offset = 0x80;
/* Load Segment Address Register */
REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, ext / 2, 7, 0);
/* Load Slave Address Register */
REG_FLD_MOD(base, HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);
/* Load Offset Address Register */
REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, offset, 7, 0);
/* Load Byte Count */
REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, 0x80, 7, 0);
REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);
/* Set DDC_CMD */
if (ext)
REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x4, 3, 0);
else
REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x2, 3, 0);
/* HDMI_CORE_DDC_STATUS_BUS_LOW */
if (REG_GET(base, HDMI_CORE_DDC_STATUS, 6, 6) == 1) {
pr_err("I2C Bus Low?\n");
return -EIO;
}
/* HDMI_CORE_DDC_STATUS_NO_ACK */
if (REG_GET(base, HDMI_CORE_DDC_STATUS, 5, 5) == 1) {
pr_err("I2C No Ack\n");
return -EIO;
}
for (i = 0; i < 0x80; ++i) {
int t;
/* IN_PROG */
if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 0) {
DSSERR("operation stopped when reading edid\n");
return -EIO;
}
t = 0;
/* FIFO_EMPTY */
while (REG_GET(base, HDMI_CORE_DDC_STATUS, 2, 2) == 1) {
if (t++ > 10000) {
DSSERR("timeout reading edid\n");
return -ETIMEDOUT;
}
udelay(1);
}
pedid[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0);
}
checksum = 0;
for (i = 0; i < 0x80; ++i)
checksum += pedid[i];
if (checksum != 0) {
pr_err("E-EDID checksum failed!!\n");
return -EIO;
}
return 0;
}
int hdmi4_read_edid(struct hdmi_core_data *core, u8 *edid, int len)
{
int r, l;
if (len < 128)
return -EINVAL;
r = hdmi_core_ddc_init(core);
if (r)
return r;
r = hdmi_core_ddc_edid(core, edid, 0);
if (r)
return r;
l = 128;
if (len >= 128 * 2 && edid[0x7e] > 0) {
r = hdmi_core_ddc_edid(core, edid + 0x80, 1);
if (r)
return r;
l += 128;
}
return l;
}
static void hdmi_core_init(struct hdmi_core_video_config *video_cfg,
struct hdmi_core_infoframe_avi *avi_cfg,
struct hdmi_core_packet_enable_repeat *repeat_cfg)
{
pr_debug("Enter hdmi_core_init\n");
/* video core */
video_cfg->ip_bus_width = HDMI_INPUT_8BIT;
video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT;
video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE;
video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE;
video_cfg->hdmi_dvi = HDMI_DVI;
video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;
/* info frame */
avi_cfg->db1_format = 0;
avi_cfg->db1_active_info = 0;
avi_cfg->db1_bar_info_dv = 0;
avi_cfg->db1_scan_info = 0;
avi_cfg->db2_colorimetry = 0;
avi_cfg->db2_aspect_ratio = 0;
avi_cfg->db2_active_fmt_ar = 0;
avi_cfg->db3_itc = 0;
avi_cfg->db3_ec = 0;
avi_cfg->db3_q_range = 0;
avi_cfg->db3_nup_scaling = 0;
avi_cfg->db4_videocode = 0;
avi_cfg->db5_pixel_repeat = 0;
avi_cfg->db6_7_line_eoftop = 0;
avi_cfg->db8_9_line_sofbottom = 0;
avi_cfg->db10_11_pixel_eofleft = 0;
avi_cfg->db12_13_pixel_sofright = 0;
/* packet enable and repeat */
repeat_cfg->audio_pkt = 0;
repeat_cfg->audio_pkt_repeat = 0;
repeat_cfg->avi_infoframe = 0;
repeat_cfg->avi_infoframe_repeat = 0;
repeat_cfg->gen_cntrl_pkt = 0;
repeat_cfg->gen_cntrl_pkt_repeat = 0;
repeat_cfg->generic_pkt = 0;
repeat_cfg->generic_pkt_repeat = 0;
}
static void hdmi_core_powerdown_disable(struct hdmi_core_data *core)
{
pr_debug("Enter hdmi_core_powerdown_disable\n");
REG_FLD_MOD(core->base, HDMI_CORE_SYS_SYS_CTRL1, 0x0, 0, 0);
}
static void hdmi_core_swreset_release(struct hdmi_core_data *core)
{
pr_debug("Enter hdmi_core_swreset_release\n");
REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x0, 0, 0);
}
static void hdmi_core_swreset_assert(struct hdmi_core_data *core)
{
pr_debug("Enter hdmi_core_swreset_assert\n");
REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x1, 0, 0);
}
/* HDMI_CORE_VIDEO_CONFIG */
static void hdmi_core_video_config(struct hdmi_core_data *core,
struct hdmi_core_video_config *cfg)
{
u32 r = 0;
void __iomem *core_sys_base = core->base;
void __iomem *core_av_base = hdmi_av_base(core);
/* sys_ctrl1 default configuration not tunable */
r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1);
r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_VEN_FOLLOWVSYNC, 5, 5);
r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_HEN_FOLLOWHSYNC, 4, 4);
r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_BSEL_24BITBUS, 2, 2);
r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_EDGE_RISINGEDGE, 1, 1);
hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1, r);
REG_FLD_MOD(core_sys_base,
HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6);
/* Vid_Mode */
r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE);
/* dither truncation configuration */
if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) {
r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6);
r = FLD_MOD(r, 1, 5, 5);
} else {
r = FLD_MOD(r, cfg->op_dither_truc, 7, 6);
r = FLD_MOD(r, 0, 5, 5);
}
hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE, r);
/* HDMI_Ctrl */
r = hdmi_read_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL);
r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6);
r = FLD_MOD(r, cfg->pkt_mode, 5, 3);
r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0);
hdmi_write_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL, r);
/* TMDS_CTRL */
REG_FLD_MOD(core_sys_base,
HDMI_CORE_SYS_TMDS_CTRL, cfg->tclk_sel_clkmult, 6, 5);
}
static void hdmi_core_aux_infoframe_avi_config(struct hdmi_core_data *core)
{
u32 val;
char sum = 0, checksum = 0;
void __iomem *av_base = hdmi_av_base(core);
struct hdmi_core_infoframe_avi info_avi = core->avi_cfg;
sum += 0x82 + 0x002 + 0x00D;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_TYPE, 0x082);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_VERS, 0x002);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_LEN, 0x00D);
val = (info_avi.db1_format << 5) |
(info_avi.db1_active_info << 4) |
(info_avi.db1_bar_info_dv << 2) |
(info_avi.db1_scan_info);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(0), val);
sum += val;
val = (info_avi.db2_colorimetry << 6) |
(info_avi.db2_aspect_ratio << 4) |
(info_avi.db2_active_fmt_ar);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(1), val);
sum += val;
val = (info_avi.db3_itc << 7) |
(info_avi.db3_ec << 4) |
(info_avi.db3_q_range << 2) |
(info_avi.db3_nup_scaling);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(2), val);
sum += val;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(3),
info_avi.db4_videocode);
sum += info_avi.db4_videocode;
val = info_avi.db5_pixel_repeat;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(4), val);
sum += val;
val = info_avi.db6_7_line_eoftop & 0x00FF;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(5), val);
sum += val;
val = ((info_avi.db6_7_line_eoftop >> 8) & 0x00FF);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(6), val);
sum += val;
val = info_avi.db8_9_line_sofbottom & 0x00FF;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(7), val);
sum += val;
val = ((info_avi.db8_9_line_sofbottom >> 8) & 0x00FF);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(8), val);
sum += val;
val = info_avi.db10_11_pixel_eofleft & 0x00FF;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(9), val);
sum += val;
val = ((info_avi.db10_11_pixel_eofleft >> 8) & 0x00FF);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(10), val);
sum += val;
val = info_avi.db12_13_pixel_sofright & 0x00FF;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(11), val);
sum += val;
val = ((info_avi.db12_13_pixel_sofright >> 8) & 0x00FF);
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(12), val);
sum += val;
checksum = 0x100 - sum;
hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_CHSUM, checksum);
}
static void hdmi_core_av_packet_config(struct hdmi_core_data *core,
struct hdmi_core_packet_enable_repeat repeat_cfg)
{
/* enable/repeat the infoframe */
hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL1,
(repeat_cfg.audio_pkt << 5) |
(repeat_cfg.audio_pkt_repeat << 4) |
(repeat_cfg.avi_infoframe << 1) |
(repeat_cfg.avi_infoframe_repeat));
/* enable/repeat the packet */
hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL2,
(repeat_cfg.gen_cntrl_pkt << 3) |
(repeat_cfg.gen_cntrl_pkt_repeat << 2) |
(repeat_cfg.generic_pkt << 1) |
(repeat_cfg.generic_pkt_repeat));
}
void hdmi4_configure(struct hdmi_core_data *core,
struct hdmi_wp_data *wp, struct hdmi_config *cfg)
{
/* HDMI */
struct omap_video_timings video_timing;
struct hdmi_video_format video_format;
/* HDMI core */
struct hdmi_core_infoframe_avi *avi_cfg = &core->avi_cfg;
struct hdmi_core_video_config v_core_cfg;
struct hdmi_core_packet_enable_repeat repeat_cfg;
hdmi_core_init(&v_core_cfg, avi_cfg, &repeat_cfg);
hdmi_wp_init_vid_fmt_timings(&video_format, &video_timing, cfg);
hdmi_wp_video_config_timing(wp, &video_timing);
/* video config */
video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422;
hdmi_wp_video_config_format(wp, &video_format);
hdmi_wp_video_config_interface(wp, &video_timing);
/*
* configure core video part
* set software reset in the core
*/
hdmi_core_swreset_assert(core);
/* power down off */
hdmi_core_powerdown_disable(core);
v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
v_core_cfg.hdmi_dvi = cfg->cm.mode;
hdmi_core_video_config(core, &v_core_cfg);
/* release software reset in the core */
hdmi_core_swreset_release(core);
/*
* configure packet
* info frame video see doc CEA861-D page 65
*/
avi_cfg->db1_format = HDMI_INFOFRAME_AVI_DB1Y_RGB;
avi_cfg->db1_active_info =
HDMI_INFOFRAME_AVI_DB1A_ACTIVE_FORMAT_OFF;
avi_cfg->db1_bar_info_dv = HDMI_INFOFRAME_AVI_DB1B_NO;
avi_cfg->db1_scan_info = HDMI_INFOFRAME_AVI_DB1S_0;
avi_cfg->db2_colorimetry = HDMI_INFOFRAME_AVI_DB2C_NO;
avi_cfg->db2_aspect_ratio = HDMI_INFOFRAME_AVI_DB2M_NO;
avi_cfg->db2_active_fmt_ar = HDMI_INFOFRAME_AVI_DB2R_SAME;
avi_cfg->db3_itc = HDMI_INFOFRAME_AVI_DB3ITC_NO;
avi_cfg->db3_ec = HDMI_INFOFRAME_AVI_DB3EC_XVYUV601;
avi_cfg->db3_q_range = HDMI_INFOFRAME_AVI_DB3Q_DEFAULT;
avi_cfg->db3_nup_scaling = HDMI_INFOFRAME_AVI_DB3SC_NO;
avi_cfg->db4_videocode = cfg->cm.code;
avi_cfg->db5_pixel_repeat = HDMI_INFOFRAME_AVI_DB5PR_NO;
avi_cfg->db6_7_line_eoftop = 0;
avi_cfg->db8_9_line_sofbottom = 0;
avi_cfg->db10_11_pixel_eofleft = 0;
avi_cfg->db12_13_pixel_sofright = 0;
hdmi_core_aux_infoframe_avi_config(core);
/* enable/repeat the infoframe */
repeat_cfg.avi_infoframe = HDMI_PACKETENABLE;
repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON;
/* wakeup */
repeat_cfg.audio_pkt = HDMI_PACKETENABLE;
repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON;
hdmi_core_av_packet_config(core, repeat_cfg);
}
void hdmi4_core_dump(struct hdmi_core_data *core, struct seq_file *s)
{
int i;
#define CORE_REG(i, name) name(i)
#define DUMPCORE(r) seq_printf(s, "%-35s %08x\n", #r,\
hdmi_read_reg(core->base, r))
#define DUMPCOREAV(r) seq_printf(s, "%-35s %08x\n", #r,\
hdmi_read_reg(hdmi_av_base(core), r))
#define DUMPCOREAV2(i, r) seq_printf(s, "%s[%d]%*s %08x\n", #r, i, \
(i < 10) ? 32 - (int)strlen(#r) : 31 - (int)strlen(#r), " ", \
hdmi_read_reg(hdmi_av_base(core), CORE_REG(i, r)))
DUMPCORE(HDMI_CORE_SYS_VND_IDL);
DUMPCORE(HDMI_CORE_SYS_DEV_IDL);
DUMPCORE(HDMI_CORE_SYS_DEV_IDH);
DUMPCORE(HDMI_CORE_SYS_DEV_REV);
DUMPCORE(HDMI_CORE_SYS_SRST);
DUMPCORE(HDMI_CORE_SYS_SYS_CTRL1);
DUMPCORE(HDMI_CORE_SYS_SYS_STAT);
DUMPCORE(HDMI_CORE_SYS_SYS_CTRL3);
DUMPCORE(HDMI_CORE_SYS_DE_DLY);
DUMPCORE(HDMI_CORE_SYS_DE_CTRL);
DUMPCORE(HDMI_CORE_SYS_DE_TOP);
DUMPCORE(HDMI_CORE_SYS_DE_CNTL);
DUMPCORE(HDMI_CORE_SYS_DE_CNTH);
DUMPCORE(HDMI_CORE_SYS_DE_LINL);
DUMPCORE(HDMI_CORE_SYS_DE_LINH_1);
DUMPCORE(HDMI_CORE_SYS_HRES_L);
DUMPCORE(HDMI_CORE_SYS_HRES_H);
DUMPCORE(HDMI_CORE_SYS_VRES_L);
DUMPCORE(HDMI_CORE_SYS_VRES_H);
DUMPCORE(HDMI_CORE_SYS_IADJUST);
DUMPCORE(HDMI_CORE_SYS_POLDETECT);
DUMPCORE(HDMI_CORE_SYS_HWIDTH1);
DUMPCORE(HDMI_CORE_SYS_HWIDTH2);
DUMPCORE(HDMI_CORE_SYS_VWIDTH);
DUMPCORE(HDMI_CORE_SYS_VID_CTRL);
DUMPCORE(HDMI_CORE_SYS_VID_ACEN);
DUMPCORE(HDMI_CORE_SYS_VID_MODE);
DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
DUMPCORE(HDMI_CORE_SYS_VID_BLANK3);
DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
DUMPCORE(HDMI_CORE_SYS_DC_HEADER);
DUMPCORE(HDMI_CORE_SYS_VID_DITHER);
DUMPCORE(HDMI_CORE_SYS_RGB2XVYCC_CT);
DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_LOW);
DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_UP);
DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_LOW);
DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_UP);
DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_LOW);
DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_UP);
DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_LOW);
DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_UP);
DUMPCORE(HDMI_CORE_SYS_INTR_STATE);
DUMPCORE(HDMI_CORE_SYS_INTR1);
DUMPCORE(HDMI_CORE_SYS_INTR2);
DUMPCORE(HDMI_CORE_SYS_INTR3);
DUMPCORE(HDMI_CORE_SYS_INTR4);
DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK1);
DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK2);
DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK3);
DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK4);
DUMPCORE(HDMI_CORE_SYS_INTR_CTRL);
DUMPCORE(HDMI_CORE_SYS_TMDS_CTRL);
DUMPCORE(HDMI_CORE_DDC_ADDR);
DUMPCORE(HDMI_CORE_DDC_SEGM);
DUMPCORE(HDMI_CORE_DDC_OFFSET);
DUMPCORE(HDMI_CORE_DDC_COUNT1);
DUMPCORE(HDMI_CORE_DDC_COUNT2);
DUMPCORE(HDMI_CORE_DDC_STATUS);
DUMPCORE(HDMI_CORE_DDC_CMD);
DUMPCORE(HDMI_CORE_DDC_DATA);
DUMPCOREAV(HDMI_CORE_AV_ACR_CTRL);
DUMPCOREAV(HDMI_CORE_AV_FREQ_SVAL);
DUMPCOREAV(HDMI_CORE_AV_N_SVAL1);
DUMPCOREAV(HDMI_CORE_AV_N_SVAL2);
DUMPCOREAV(HDMI_CORE_AV_N_SVAL3);
DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL1);
DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL2);
DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL3);
DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL1);
DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL2);
DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL3);
DUMPCOREAV(HDMI_CORE_AV_AUD_MODE);
DUMPCOREAV(HDMI_CORE_AV_SPDIF_CTRL);
DUMPCOREAV(HDMI_CORE_AV_HW_SPDIF_FS);
DUMPCOREAV(HDMI_CORE_AV_SWAP_I2S);
DUMPCOREAV(HDMI_CORE_AV_SPDIF_ERTH);
DUMPCOREAV(HDMI_CORE_AV_I2S_IN_MAP);
DUMPCOREAV(HDMI_CORE_AV_I2S_IN_CTRL);
DUMPCOREAV(HDMI_CORE_AV_I2S_CHST0);
DUMPCOREAV(HDMI_CORE_AV_I2S_CHST1);
DUMPCOREAV(HDMI_CORE_AV_I2S_CHST2);
DUMPCOREAV(HDMI_CORE_AV_I2S_CHST4);
DUMPCOREAV(HDMI_CORE_AV_I2S_CHST5);
DUMPCOREAV(HDMI_CORE_AV_ASRC);
DUMPCOREAV(HDMI_CORE_AV_I2S_IN_LEN);
DUMPCOREAV(HDMI_CORE_AV_HDMI_CTRL);
DUMPCOREAV(HDMI_CORE_AV_AUDO_TXSTAT);
DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_1);
DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_2);
DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_3);
DUMPCOREAV(HDMI_CORE_AV_TEST_TXCTRL);
DUMPCOREAV(HDMI_CORE_AV_DPD);
DUMPCOREAV(HDMI_CORE_AV_PB_CTRL1);
DUMPCOREAV(HDMI_CORE_AV_PB_CTRL2);
DUMPCOREAV(HDMI_CORE_AV_AVI_TYPE);
DUMPCOREAV(HDMI_CORE_AV_AVI_VERS);
DUMPCOREAV(HDMI_CORE_AV_AVI_LEN);
DUMPCOREAV(HDMI_CORE_AV_AVI_CHSUM);
for (i = 0; i < HDMI_CORE_AV_AVI_DBYTE_NELEMS; i++)
DUMPCOREAV2(i, HDMI_CORE_AV_AVI_DBYTE);
DUMPCOREAV(HDMI_CORE_AV_SPD_TYPE);
DUMPCOREAV(HDMI_CORE_AV_SPD_VERS);
DUMPCOREAV(HDMI_CORE_AV_SPD_LEN);
DUMPCOREAV(HDMI_CORE_AV_SPD_CHSUM);
for (i = 0; i < HDMI_CORE_AV_SPD_DBYTE_NELEMS; i++)
DUMPCOREAV2(i, HDMI_CORE_AV_SPD_DBYTE);
DUMPCOREAV(HDMI_CORE_AV_AUDIO_TYPE);
DUMPCOREAV(HDMI_CORE_AV_AUDIO_VERS);
DUMPCOREAV(HDMI_CORE_AV_AUDIO_LEN);
DUMPCOREAV(HDMI_CORE_AV_AUDIO_CHSUM);
for (i = 0; i < HDMI_CORE_AV_AUD_DBYTE_NELEMS; i++)
DUMPCOREAV2(i, HDMI_CORE_AV_AUD_DBYTE);
DUMPCOREAV(HDMI_CORE_AV_MPEG_TYPE);
DUMPCOREAV(HDMI_CORE_AV_MPEG_VERS);
DUMPCOREAV(HDMI_CORE_AV_MPEG_LEN);
DUMPCOREAV(HDMI_CORE_AV_MPEG_CHSUM);
for (i = 0; i < HDMI_CORE_AV_MPEG_DBYTE_NELEMS; i++)
DUMPCOREAV2(i, HDMI_CORE_AV_MPEG_DBYTE);
for (i = 0; i < HDMI_CORE_AV_GEN_DBYTE_NELEMS; i++)
DUMPCOREAV2(i, HDMI_CORE_AV_GEN_DBYTE);
DUMPCOREAV(HDMI_CORE_AV_CP_BYTE1);
for (i = 0; i < HDMI_CORE_AV_GEN2_DBYTE_NELEMS; i++)
DUMPCOREAV2(i, HDMI_CORE_AV_GEN2_DBYTE);
DUMPCOREAV(HDMI_CORE_AV_CEC_ADDR_ID);
}
#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
static void hdmi_core_audio_config(struct hdmi_core_data *core,
struct hdmi_core_audio_config *cfg)
{
u32 r;
void __iomem *av_base = hdmi_av_base(core);
/*
* Parameters for generation of Audio Clock Recovery packets
*/
REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL1, cfg->n, 7, 0);
REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL2, cfg->n >> 8, 7, 0);
REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL3, cfg->n >> 16, 7, 0);
if (cfg->cts_mode == HDMI_AUDIO_CTS_MODE_SW) {
REG_FLD_MOD(av_base, HDMI_CORE_AV_CTS_SVAL1, cfg->cts, 7, 0);
REG_FLD_MOD(av_base,
HDMI_CORE_AV_CTS_SVAL2, cfg->cts >> 8, 7, 0);
REG_FLD_MOD(av_base,
HDMI_CORE_AV_CTS_SVAL3, cfg->cts >> 16, 7, 0);
} else {
REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_1,
cfg->aud_par_busclk, 7, 0);
REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_2,
(cfg->aud_par_busclk >> 8), 7, 0);
REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_3,
(cfg->aud_par_busclk >> 16), 7, 0);
}
/* Set ACR clock divisor */
REG_FLD_MOD(av_base,
HDMI_CORE_AV_FREQ_SVAL, cfg->mclk_mode, 2, 0);
r = hdmi_read_reg(av_base, HDMI_CORE_AV_ACR_CTRL);
/*
* Use TMDS clock for ACR packets. For devices that use
* the MCLK, this is the first part of the MCLK initialization.
*/
r = FLD_MOD(r, 0, 2, 2);
r = FLD_MOD(r, cfg->en_acr_pkt, 1, 1);
r = FLD_MOD(r, cfg->cts_mode, 0, 0);
hdmi_write_reg(av_base, HDMI_CORE_AV_ACR_CTRL, r);
/* For devices using MCLK, this completes its initialization. */
if (cfg->use_mclk)
REG_FLD_MOD(av_base, HDMI_CORE_AV_ACR_CTRL, 1, 2, 2);
/* Override of SPDIF sample frequency with value in I2S_CHST4 */
REG_FLD_MOD(av_base, HDMI_CORE_AV_SPDIF_CTRL,
cfg->fs_override, 1, 1);
/*
* Set IEC-60958-3 channel status word. It is passed to the IP
* just as it is received. The user of the driver is responsible
* for its contents.
*/
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST0,
cfg->iec60958_cfg->status[0]);
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST1,
cfg->iec60958_cfg->status[1]);
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST2,
cfg->iec60958_cfg->status[2]);
/* yes, this is correct: status[3] goes to CHST4 register */
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST4,
cfg->iec60958_cfg->status[3]);
/* yes, this is correct: status[4] goes to CHST5 register */
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST5,
cfg->iec60958_cfg->status[4]);
/* set I2S parameters */
r = hdmi_read_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL);
r = FLD_MOD(r, cfg->i2s_cfg.sck_edge_mode, 6, 6);
r = FLD_MOD(r, cfg->i2s_cfg.vbit, 4, 4);
r = FLD_MOD(r, cfg->i2s_cfg.justification, 2, 2);
r = FLD_MOD(r, cfg->i2s_cfg.direction, 1, 1);
r = FLD_MOD(r, cfg->i2s_cfg.shift, 0, 0);
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL, r);
REG_FLD_MOD(av_base, HDMI_CORE_AV_I2S_IN_LEN,
cfg->i2s_cfg.in_length_bits, 3, 0);
/* Audio channels and mode parameters */
REG_FLD_MOD(av_base, HDMI_CORE_AV_HDMI_CTRL, cfg->layout, 2, 1);
r = hdmi_read_reg(av_base, HDMI_CORE_AV_AUD_MODE);
r = FLD_MOD(r, cfg->i2s_cfg.active_sds, 7, 4);
r = FLD_MOD(r, cfg->en_dsd_audio, 3, 3);
r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2);
r = FLD_MOD(r, cfg->en_spdif, 1, 1);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_MODE, r);
/* Audio channel mappings */
/* TODO: Make channel mapping dynamic. For now, map channels
* in the ALSA order: FL/FR/RL/RR/C/LFE/SL/SR. Remapping is needed as
* HDMI speaker order is different. See CEA-861 Section 6.6.2.
*/
hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_MAP, 0x78);
REG_FLD_MOD(av_base, HDMI_CORE_AV_SWAP_I2S, 1, 5, 5);
}
static void hdmi_core_audio_infoframe_cfg(struct hdmi_core_data *core,
struct snd_cea_861_aud_if *info_aud)
{
u8 sum = 0, checksum = 0;
void __iomem *av_base = hdmi_av_base(core);
/*
* Set audio info frame type, version and length as
* described in HDMI 1.4a Section 8.2.2 specification.
* Checksum calculation is defined in Section 5.3.5.
*/
hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_TYPE, 0x84);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_VERS, 0x01);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_LEN, 0x0a);
sum += 0x84 + 0x001 + 0x00a;
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(0),
info_aud->db1_ct_cc);
sum += info_aud->db1_ct_cc;
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(1),
info_aud->db2_sf_ss);
sum += info_aud->db2_sf_ss;
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(2), info_aud->db3);
sum += info_aud->db3;
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(3), info_aud->db4_ca);
sum += info_aud->db4_ca;
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(4),
info_aud->db5_dminh_lsv);
sum += info_aud->db5_dminh_lsv;
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(5), 0x00);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(6), 0x00);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(7), 0x00);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(8), 0x00);
hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(9), 0x00);
checksum = 0x100 - sum;
hdmi_write_reg(av_base,
HDMI_CORE_AV_AUDIO_CHSUM, checksum);
/*
* TODO: Add MPEG and SPD enable and repeat cfg when EDID parsing
* is available.
*/
}
int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
struct omap_dss_audio *audio, u32 pclk)
{
struct hdmi_audio_format audio_format;
struct hdmi_audio_dma audio_dma;
struct hdmi_core_audio_config acore;
int err, n, cts, channel_count;
unsigned int fs_nr;
bool word_length_16b = false;
if (!audio || !audio->iec || !audio->cea || !core)
return -EINVAL;
acore.iec60958_cfg = audio->iec;
/*
* In the IEC-60958 status word, check if the audio sample word length
* is 16-bit as several optimizations can be performed in such case.
*/
if (!(audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24))
if (audio->iec->status[4] & IEC958_AES4_CON_WORDLEN_20_16)
word_length_16b = true;
/* I2S configuration. See Phillips' specification */
if (word_length_16b)
acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_LEFT;
else
acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
/*
* The I2S input word length is twice the lenght given in the IEC-60958
* status word. If the word size is greater than
* 20 bits, increment by one.
*/
acore.i2s_cfg.in_length_bits = audio->iec->status[4]
& IEC958_AES4_CON_WORDLEN;
if (audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24)
acore.i2s_cfg.in_length_bits++;
acore.i2s_cfg.sck_edge_mode = HDMI_AUDIO_I2S_SCK_EDGE_RISING;
acore.i2s_cfg.vbit = HDMI_AUDIO_I2S_VBIT_FOR_PCM;
acore.i2s_cfg.direction = HDMI_AUDIO_I2S_MSB_SHIFTED_FIRST;
acore.i2s_cfg.shift = HDMI_AUDIO_I2S_FIRST_BIT_SHIFT;
/* convert sample frequency to a number */
switch (audio->iec->status[3] & IEC958_AES3_CON_FS) {
case IEC958_AES3_CON_FS_32000:
fs_nr = 32000;
break;
case IEC958_AES3_CON_FS_44100:
fs_nr = 44100;
break;
case IEC958_AES3_CON_FS_48000:
fs_nr = 48000;
break;
case IEC958_AES3_CON_FS_88200:
fs_nr = 88200;
break;
case IEC958_AES3_CON_FS_96000:
fs_nr = 96000;
break;
case IEC958_AES3_CON_FS_176400:
fs_nr = 176400;
break;
case IEC958_AES3_CON_FS_192000:
fs_nr = 192000;
break;
default:
return -EINVAL;
}
err = hdmi_compute_acr(pclk, fs_nr, &n, &cts);
/* Audio clock regeneration settings */
acore.n = n;
acore.cts = cts;
if (dss_has_feature(FEAT_HDMI_CTS_SWMODE)) {
acore.aud_par_busclk = 0;
acore.cts_mode = HDMI_AUDIO_CTS_MODE_SW;
acore.use_mclk = dss_has_feature(FEAT_HDMI_AUDIO_USE_MCLK);
} else {
acore.aud_par_busclk = (((128 * 31) - 1) << 8);
acore.cts_mode = HDMI_AUDIO_CTS_MODE_HW;
acore.use_mclk = true;
}
if (acore.use_mclk)
acore.mclk_mode = HDMI_AUDIO_MCLK_128FS;
/* Audio channels settings */
channel_count = (audio->cea->db1_ct_cc &
CEA861_AUDIO_INFOFRAME_DB1CC) + 1;
switch (channel_count) {
case 2:
audio_format.active_chnnls_msk = 0x03;
break;
case 3:
audio_format.active_chnnls_msk = 0x07;
break;
case 4:
audio_format.active_chnnls_msk = 0x0f;
break;
case 5:
audio_format.active_chnnls_msk = 0x1f;
break;
case 6:
audio_format.active_chnnls_msk = 0x3f;
break;
case 7:
audio_format.active_chnnls_msk = 0x7f;
break;
case 8:
audio_format.active_chnnls_msk = 0xff;
break;
default:
return -EINVAL;
}
/*
* the HDMI IP needs to enable four stereo channels when transmitting
* more than 2 audio channels
*/
if (channel_count == 2) {
audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL;
acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN;
acore.layout = HDMI_AUDIO_LAYOUT_2CH;
} else {
audio_format.stereo_channels = HDMI_AUDIO_STEREO_FOURCHANNELS;
acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN |
HDMI_AUDIO_I2S_SD1_EN | HDMI_AUDIO_I2S_SD2_EN |
HDMI_AUDIO_I2S_SD3_EN;
acore.layout = HDMI_AUDIO_LAYOUT_8CH;
}
acore.en_spdif = false;
/* use sample frequency from channel status word */
acore.fs_override = true;
/* enable ACR packets */
acore.en_acr_pkt = true;
/* disable direct streaming digital audio */
acore.en_dsd_audio = false;
/* use parallel audio interface */
acore.en_parallel_aud_input = true;
/* DMA settings */
if (word_length_16b)
audio_dma.transfer_size = 0x10;
else
audio_dma.transfer_size = 0x20;
audio_dma.block_size = 0xC0;
audio_dma.mode = HDMI_AUDIO_TRANSF_DMA;
audio_dma.fifo_threshold = 0x20; /* in number of samples */
/* audio FIFO format settings */
if (word_length_16b) {
audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_TWOSAMPLES;
audio_format.sample_size = HDMI_AUDIO_SAMPLE_16BITS;
audio_format.justification = HDMI_AUDIO_JUSTIFY_LEFT;
} else {
audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_ONESAMPLE;
audio_format.sample_size = HDMI_AUDIO_SAMPLE_24BITS;
audio_format.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
}
audio_format.type = HDMI_AUDIO_TYPE_LPCM;
audio_format.sample_order = HDMI_AUDIO_SAMPLE_LEFT_FIRST;
/* disable start/stop signals of IEC 60958 blocks */
audio_format.en_sig_blk_strt_end = HDMI_AUDIO_BLOCK_SIG_STARTEND_ON;
/* configure DMA and audio FIFO format*/
hdmi_wp_audio_config_dma(wp, &audio_dma);
hdmi_wp_audio_config_format(wp, &audio_format);
/* configure the core*/
hdmi_core_audio_config(core, &acore);
/* configure CEA 861 audio infoframe*/
hdmi_core_audio_infoframe_cfg(core, audio->cea);
return 0;
}
int hdmi4_audio_start(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
{
REG_FLD_MOD(hdmi_av_base(core),
HDMI_CORE_AV_AUD_MODE, true, 0, 0);
hdmi_wp_audio_core_req_enable(wp, true);
return 0;
}
void hdmi4_audio_stop(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
{
REG_FLD_MOD(hdmi_av_base(core),
HDMI_CORE_AV_AUD_MODE, false, 0, 0);
hdmi_wp_audio_core_req_enable(wp, false);
}
int hdmi4_audio_get_dma_port(u32 *offset, u32 *size)
{
if (!offset || !size)
return -EINVAL;
*offset = HDMI_WP_AUDIO_DATA;
*size = 4;
return 0;
}
#endif
#define CORE_OFFSET 0x400
#define CORE_SIZE 0xc00
int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
{
struct resource *res;
struct resource temp_res;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hdmi_core");
if (!res) {
DSSDBG("can't get CORE mem resource by name\n");
/*
* if hwmod/DT doesn't have the memory resource information
* split into HDMI sub blocks by name, we try again by getting
* the platform's first resource. this code will be removed when
* the driver can get the mem resources by name
*/
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
DSSERR("can't get CORE mem resource\n");
return -EINVAL;
}
temp_res.start = res->start + CORE_OFFSET;
temp_res.end = temp_res.start + CORE_SIZE - 1;
res = &temp_res;
}
core->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (!core->base) {
DSSERR("can't ioremap CORE\n");
return -ENOMEM;
}
return 0;
}
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