// SPDX-License-Identifier: GPL-2.0-only
/*
* HDMI wrapper
*
* Copyright ( C ) 2013 Texas Instruments Incorporated - https : //www.ti.com/
*/
#define DSS_SUBSYS_NAME "HDMIWP"
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include "omapdss.h"
#include "dss.h"
#include "hdmi.h"
void hdmi_wp_dump(struct hdmi_wp_data *wp, struct seq_file *s)
{
#define DUMPREG(r) seq_printf(s, "%-35s %08x\n" , #r , hdmi_read_reg(wp->base, r))
DUMPREG(HDMI_WP_REVISION);
DUMPREG(HDMI_WP_SYSCONFIG);
DUMPREG(HDMI_WP_IRQSTATUS_RAW);
DUMPREG(HDMI_WP_IRQSTATUS);
DUMPREG(HDMI_WP_IRQENABLE_SET);
DUMPREG(HDMI_WP_IRQENABLE_CLR);
DUMPREG(HDMI_WP_IRQWAKEEN);
DUMPREG(HDMI_WP_PWR_CTRL);
DUMPREG(HDMI_WP_DEBOUNCE);
DUMPREG(HDMI_WP_VIDEO_CFG);
DUMPREG(HDMI_WP_VIDEO_SIZE);
DUMPREG(HDMI_WP_VIDEO_TIMING_H);
DUMPREG(HDMI_WP_VIDEO_TIMING_V);
DUMPREG(HDMI_WP_CLK);
DUMPREG(HDMI_WP_AUDIO_CFG);
DUMPREG(HDMI_WP_AUDIO_CFG2);
DUMPREG(HDMI_WP_AUDIO_CTRL);
DUMPREG(HDMI_WP_AUDIO_DATA);
}
u32 hdmi_wp_get_irqstatus(struct hdmi_wp_data *wp)
{
return hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS);
}
void hdmi_wp_set_irqstatus(struct hdmi_wp_data *wp, u32 irqstatus)
{
hdmi_write_reg(wp->base, HDMI_WP_IRQSTATUS, irqstatus);
/* flush posted write */
hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS);
}
void hdmi_wp_set_irqenable(struct hdmi_wp_data *wp, u32 mask)
{
hdmi_write_reg(wp->base, HDMI_WP_IRQENABLE_SET, mask);
}
void hdmi_wp_clear_irqenable(struct hdmi_wp_data *wp, u32 mask)
{
hdmi_write_reg(wp->base, HDMI_WP_IRQENABLE_CLR, mask);
}
/* PHY_PWR_CMD */
int hdmi_wp_set_phy_pwr(struct hdmi_wp_data *wp, enum hdmi_phy_pwr val)
{
/* Return if already the state */
if (REG_GET(wp->base, HDMI_WP_PWR_CTRL, 5 , 4 ) == val)
return 0 ;
/* Command for power control of HDMI PHY */
REG_FLD_MOD(wp->base, HDMI_WP_PWR_CTRL, val, 7 , 6 );
/* Status of the power control of HDMI PHY */
if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 5 , 4 , val)
!= val) {
DSSERR("Failed to set PHY power mode to %d\n" , val);
return -ETIMEDOUT;
}
return 0 ;
}
/* PLL_PWR_CMD */
int hdmi_wp_set_pll_pwr(struct hdmi_wp_data *wp, enum hdmi_pll_pwr val)
{
/* Command for power control of HDMI PLL */
REG_FLD_MOD(wp->base, HDMI_WP_PWR_CTRL, val, 3 , 2 );
/* wait till PHY_PWR_STATUS is set */
if (hdmi_wait_for_bit_change(wp->base, HDMI_WP_PWR_CTRL, 1 , 0 , val)
!= val) {
DSSERR("Failed to set PLL_PWR_STATUS\n" );
return -ETIMEDOUT;
}
return 0 ;
}
int hdmi_wp_video_start(struct hdmi_wp_data *wp)
{
REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, true , 31 , 31 );
return 0 ;
}
void hdmi_wp_video_stop(struct hdmi_wp_data *wp)
{
int i;
hdmi_write_reg(wp->base, HDMI_WP_IRQSTATUS, HDMI_IRQ_VIDEO_FRAME_DONE);
REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, false , 31 , 31 );
for (i = 0 ; i < 50 ; ++i) {
u32 v;
msleep(20 );
v = hdmi_read_reg(wp->base, HDMI_WP_IRQSTATUS_RAW);
if (v & HDMI_IRQ_VIDEO_FRAME_DONE)
return ;
}
DSSERR("no HDMI FRAMEDONE when disabling output\n" );
}
void hdmi_wp_video_config_format(struct hdmi_wp_data *wp,
const struct hdmi_video_format *video_fmt)
{
u32 l = 0 ;
REG_FLD_MOD(wp->base, HDMI_WP_VIDEO_CFG, video_fmt->packing_mode,
10 , 8 );
l |= FLD_VAL(video_fmt->y_res, 31 , 16 );
l |= FLD_VAL(video_fmt->x_res, 15 , 0 );
hdmi_write_reg(wp->base, HDMI_WP_VIDEO_SIZE, l);
}
void hdmi_wp_video_config_interface(struct hdmi_wp_data *wp,
const struct videomode *vm)
{
u32 r;
bool vsync_inv, hsync_inv;
DSSDBG("Enter hdmi_wp_video_config_interface\n" );
vsync_inv = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
hsync_inv = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);
r = hdmi_read_reg(wp->base, HDMI_WP_VIDEO_CFG);
r = FLD_MOD(r, 1 , 7 , 7 ); /* VSYNC_POL to dispc active high */
r = FLD_MOD(r, 1 , 6 , 6 ); /* HSYNC_POL to dispc active high */
r = FLD_MOD(r, vsync_inv, 5 , 5 ); /* CORE_VSYNC_INV */
r = FLD_MOD(r, hsync_inv, 4 , 4 ); /* CORE_HSYNC_INV */
r = FLD_MOD(r, !!(vm->flags & DISPLAY_FLAGS_INTERLACED), 3 , 3 );
r = FLD_MOD(r, 1 , 1 , 0 ); /* HDMI_TIMING_MASTER_24BIT */
hdmi_write_reg(wp->base, HDMI_WP_VIDEO_CFG, r);
}
void hdmi_wp_video_config_timing(struct hdmi_wp_data *wp,
const struct videomode *vm)
{
u32 timing_h = 0 ;
u32 timing_v = 0 ;
unsigned int hsync_len_offset = 1 ;
DSSDBG("Enter hdmi_wp_video_config_timing\n" );
/*
* On OMAP4 and OMAP5 ES1 the HSW field is programmed as is . On OMAP5
* ES2 + ( including DRA7 / AM5 SoCs ) HSW field is programmed to hsync_len - 1 .
* However , we don ' t support OMAP5 ES1 at all , so we can just check for
* OMAP4 here .
*/
if (wp->version == 4 )
hsync_len_offset = 0 ;
timing_h |= FLD_VAL(vm->hback_porch, 31 , 20 );
timing_h |= FLD_VAL(vm->hfront_porch, 19 , 8 );
timing_h |= FLD_VAL(vm->hsync_len - hsync_len_offset, 7 , 0 );
hdmi_write_reg(wp->base, HDMI_WP_VIDEO_TIMING_H, timing_h);
timing_v |= FLD_VAL(vm->vback_porch, 31 , 20 );
timing_v |= FLD_VAL(vm->vfront_porch, 19 , 8 );
timing_v |= FLD_VAL(vm->vsync_len, 7 , 0 );
hdmi_write_reg(wp->base, HDMI_WP_VIDEO_TIMING_V, timing_v);
}
void hdmi_wp_init_vid_fmt_timings(struct hdmi_video_format *video_fmt,
struct videomode *vm, const struct hdmi_config *param)
{
DSSDBG("Enter hdmi_wp_video_init_format\n" );
video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444;
video_fmt->y_res = param->vm.vactive;
video_fmt->x_res = param->vm.hactive;
vm->hback_porch = param->vm.hback_porch;
vm->hfront_porch = param->vm.hfront_porch;
vm->hsync_len = param->vm.hsync_len;
vm->vback_porch = param->vm.vback_porch;
vm->vfront_porch = param->vm.vfront_porch;
vm->vsync_len = param->vm.vsync_len;
vm->flags = param->vm.flags;
if (param->vm.flags & DISPLAY_FLAGS_INTERLACED) {
video_fmt->y_res /= 2 ;
vm->vback_porch /= 2 ;
vm->vfront_porch /= 2 ;
vm->vsync_len /= 2 ;
}
if (param->vm.flags & DISPLAY_FLAGS_DOUBLECLK) {
video_fmt->x_res *= 2 ;
vm->hfront_porch *= 2 ;
vm->hsync_len *= 2 ;
vm->hback_porch *= 2 ;
}
}
void hdmi_wp_audio_config_format(struct hdmi_wp_data *wp,
struct hdmi_audio_format *aud_fmt)
{
u32 r;
DSSDBG("Enter hdmi_wp_audio_config_format\n" );
r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CFG);
if (wp->version == 4 ) {
r = FLD_MOD(r, aud_fmt->stereo_channels, 26 , 24 );
r = FLD_MOD(r, aud_fmt->active_chnnls_msk, 23 , 16 );
}
r = FLD_MOD(r, aud_fmt->en_sig_blk_strt_end, 5 , 5 );
r = FLD_MOD(r, aud_fmt->type, 4 , 4 );
r = FLD_MOD(r, aud_fmt->justification, 3 , 3 );
r = FLD_MOD(r, aud_fmt->sample_order, 2 , 2 );
r = FLD_MOD(r, aud_fmt->samples_per_word, 1 , 1 );
r = FLD_MOD(r, aud_fmt->sample_size, 0 , 0 );
hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CFG, r);
}
void hdmi_wp_audio_config_dma(struct hdmi_wp_data *wp,
struct hdmi_audio_dma *aud_dma)
{
u32 r;
DSSDBG("Enter hdmi_wp_audio_config_dma\n" );
r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CFG2);
r = FLD_MOD(r, aud_dma->transfer_size, 15 , 8 );
r = FLD_MOD(r, aud_dma->block_size, 7 , 0 );
hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CFG2, r);
r = hdmi_read_reg(wp->base, HDMI_WP_AUDIO_CTRL);
r = FLD_MOD(r, aud_dma->mode, 9 , 9 );
r = FLD_MOD(r, aud_dma->fifo_threshold, 8 , 0 );
hdmi_write_reg(wp->base, HDMI_WP_AUDIO_CTRL, r);
}
int hdmi_wp_audio_enable(struct hdmi_wp_data *wp, bool enable)
{
REG_FLD_MOD(wp->base, HDMI_WP_AUDIO_CTRL, enable, 31 , 31 );
return 0 ;
}
int hdmi_wp_audio_core_req_enable(struct hdmi_wp_data *wp, bool enable)
{
REG_FLD_MOD(wp->base, HDMI_WP_AUDIO_CTRL, enable, 30 , 30 );
return 0 ;
}
int hdmi_wp_init(struct platform_device *pdev, struct hdmi_wp_data *wp,
unsigned int version)
{
struct resource *res;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wp" );
wp->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(wp->base))
return PTR_ERR(wp->base);
wp->phys_base = res->start;
wp->version = version;
return 0 ;
}
phys_addr_t hdmi_wp_get_audio_dma_addr(struct hdmi_wp_data *wp)
{
return wp->phys_base + HDMI_WP_AUDIO_DATA;
}
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