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/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#include "dpu_hwio.h"
#include "dpu_hw_catalog.h"
#include "dpu_hw_intf.h"
#include "dpu_kms.h"
#define INTF_TIMING_ENGINE_EN 0x000
#define INTF_CONFIG 0x004
#define INTF_HSYNC_CTL 0x008
#define INTF_VSYNC_PERIOD_F0 0x00C
#define INTF_VSYNC_PERIOD_F1 0x010
#define INTF_VSYNC_PULSE_WIDTH_F0 0x014
#define INTF_VSYNC_PULSE_WIDTH_F1 0x018
#define INTF_DISPLAY_V_START_F0 0x01C
#define INTF_DISPLAY_V_START_F1 0x020
#define INTF_DISPLAY_V_END_F0 0x024
#define INTF_DISPLAY_V_END_F1 0x028
#define INTF_ACTIVE_V_START_F0 0x02C
#define INTF_ACTIVE_V_START_F1 0x030
#define INTF_ACTIVE_V_END_F0 0x034
#define INTF_ACTIVE_V_END_F1 0x038
#define INTF_DISPLAY_HCTL 0x03C
#define INTF_ACTIVE_HCTL 0x040
#define INTF_BORDER_COLOR 0x044
#define INTF_UNDERFLOW_COLOR 0x048
#define INTF_HSYNC_SKEW 0x04C
#define INTF_POLARITY_CTL 0x050
#define INTF_TEST_CTL 0x054
#define INTF_TP_COLOR0 0x058
#define INTF_TP_COLOR1 0x05C
#define INTF_FRAME_LINE_COUNT_EN 0x0A8
#define INTF_FRAME_COUNT 0x0AC
#define INTF_LINE_COUNT 0x0B0
#define INTF_DEFLICKER_CONFIG 0x0F0
#define INTF_DEFLICKER_STRNG_COEFF 0x0F4
#define INTF_DEFLICKER_WEAK_COEFF 0x0F8
#define INTF_DSI_CMD_MODE_TRIGGER_EN 0x084
#define INTF_PANEL_FORMAT 0x090
#define INTF_TPG_ENABLE 0x100
#define INTF_TPG_MAIN_CONTROL 0x104
#define INTF_TPG_VIDEO_CONFIG 0x108
#define INTF_TPG_COMPONENT_LIMITS 0x10C
#define INTF_TPG_RECTANGLE 0x110
#define INTF_TPG_INITIAL_VALUE 0x114
#define INTF_TPG_BLK_WHITE_PATTERN_FRAMES 0x118
#define INTF_TPG_RGB_MAPPING 0x11C
#define INTF_PROG_FETCH_START 0x170
#define INTF_PROG_ROT_START 0x174
#define INTF_FRAME_LINE_COUNT_EN 0x0A8
#define INTF_FRAME_COUNT 0x0AC
#define INTF_LINE_COUNT 0x0B0
static struct dpu_intf_cfg *_intf_offset(enum dpu_intf intf,
struct dpu_mdss_cfg *m,
void __iomem *addr,
struct dpu_hw_blk_reg_map *b)
{
int i;
for (i = 0; i < m->intf_count; i++) {
if ((intf == m->intf[i].id) &&
(m->intf[i].type != INTF_NONE)) {
b->base_off = addr;
b->blk_off = m->intf[i].base;
b->length = m->intf[i].len;
b->hwversion = m->hwversion;
b->log_mask = DPU_DBG_MASK_INTF;
return &m->intf[i];
}
}
return ERR_PTR(-EINVAL);
}
static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx,
const struct intf_timing_params *p,
const struct dpu_format *fmt)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
u32 hsync_period, vsync_period;
u32 display_v_start, display_v_end;
u32 hsync_start_x, hsync_end_x;
u32 active_h_start, active_h_end;
u32 active_v_start, active_v_end;
u32 active_hctl, display_hctl, hsync_ctl;
u32 polarity_ctl, den_polarity, hsync_polarity, vsync_polarity;
u32 panel_format;
u32 intf_cfg;
/* read interface_cfg */
intf_cfg = DPU_REG_READ(c, INTF_CONFIG);
hsync_period = p->hsync_pulse_width + p->h_back_porch + p->width +
p->h_front_porch;
vsync_period = p->vsync_pulse_width + p->v_back_porch + p->height +
p->v_front_porch;
display_v_start = ((p->vsync_pulse_width + p->v_back_porch) *
hsync_period) + p->hsync_skew;
display_v_end = ((vsync_period - p->v_front_porch) * hsync_period) +
p->hsync_skew - 1;
if (ctx->cap->type == INTF_EDP || ctx->cap->type == INTF_DP) {
display_v_start += p->hsync_pulse_width + p->h_back_porch;
display_v_end -= p->h_front_porch;
}
hsync_start_x = p->h_back_porch + p->hsync_pulse_width;
hsync_end_x = hsync_period - p->h_front_porch - 1;
if (p->width != p->xres) {
active_h_start = hsync_start_x;
active_h_end = active_h_start + p->xres - 1;
} else {
active_h_start = 0;
active_h_end = 0;
}
if (p->height != p->yres) {
active_v_start = display_v_start;
active_v_end = active_v_start + (p->yres * hsync_period) - 1;
} else {
active_v_start = 0;
active_v_end = 0;
}
if (active_h_end) {
active_hctl = (active_h_end << 16) | active_h_start;
intf_cfg |= BIT(29); /* ACTIVE_H_ENABLE */
} else {
active_hctl = 0;
}
if (active_v_end)
intf_cfg |= BIT(30); /* ACTIVE_V_ENABLE */
hsync_ctl = (hsync_period << 16) | p->hsync_pulse_width;
display_hctl = (hsync_end_x << 16) | hsync_start_x;
den_polarity = 0;
if (ctx->cap->type == INTF_HDMI) {
hsync_polarity = p->yres >= 720 ? 0 : 1;
vsync_polarity = p->yres >= 720 ? 0 : 1;
} else {
hsync_polarity = 0;
vsync_polarity = 0;
}
polarity_ctl = (den_polarity << 2) | /* DEN Polarity */
(vsync_polarity << 1) | /* VSYNC Polarity */
(hsync_polarity << 0); /* HSYNC Polarity */
if (!DPU_FORMAT_IS_YUV(fmt))
panel_format = (fmt->bits[C0_G_Y] |
(fmt->bits[C1_B_Cb] << 2) |
(fmt->bits[C2_R_Cr] << 4) |
(0x21 << 8));
else
/* Interface treats all the pixel data in RGB888 format */
panel_format = (COLOR_8BIT |
(COLOR_8BIT << 2) |
(COLOR_8BIT << 4) |
(0x21 << 8));
DPU_REG_WRITE(c, INTF_HSYNC_CTL, hsync_ctl);
DPU_REG_WRITE(c, INTF_VSYNC_PERIOD_F0, vsync_period * hsync_period);
DPU_REG_WRITE(c, INTF_VSYNC_PULSE_WIDTH_F0,
p->vsync_pulse_width * hsync_period);
DPU_REG_WRITE(c, INTF_DISPLAY_HCTL, display_hctl);
DPU_REG_WRITE(c, INTF_DISPLAY_V_START_F0, display_v_start);
DPU_REG_WRITE(c, INTF_DISPLAY_V_END_F0, display_v_end);
DPU_REG_WRITE(c, INTF_ACTIVE_HCTL, active_hctl);
DPU_REG_WRITE(c, INTF_ACTIVE_V_START_F0, active_v_start);
DPU_REG_WRITE(c, INTF_ACTIVE_V_END_F0, active_v_end);
DPU_REG_WRITE(c, INTF_BORDER_COLOR, p->border_clr);
DPU_REG_WRITE(c, INTF_UNDERFLOW_COLOR, p->underflow_clr);
DPU_REG_WRITE(c, INTF_HSYNC_SKEW, p->hsync_skew);
DPU_REG_WRITE(c, INTF_POLARITY_CTL, polarity_ctl);
DPU_REG_WRITE(c, INTF_FRAME_LINE_COUNT_EN, 0x3);
DPU_REG_WRITE(c, INTF_CONFIG, intf_cfg);
DPU_REG_WRITE(c, INTF_PANEL_FORMAT, panel_format);
}
static void dpu_hw_intf_enable_timing_engine(
struct dpu_hw_intf *intf,
u8 enable)
{
struct dpu_hw_blk_reg_map *c = &intf->hw;
/* Note: Display interface select is handled in top block hw layer */
DPU_REG_WRITE(c, INTF_TIMING_ENGINE_EN, enable != 0);
}
static void dpu_hw_intf_setup_prg_fetch(
struct dpu_hw_intf *intf,
const struct intf_prog_fetch *fetch)
{
struct dpu_hw_blk_reg_map *c = &intf->hw;
int fetch_enable;
/*
* Fetch should always be outside the active lines. If the fetching
* is programmed within active region, hardware behavior is unknown.
*/
fetch_enable = DPU_REG_READ(c, INTF_CONFIG);
if (fetch->enable) {
fetch_enable |= BIT(31);
DPU_REG_WRITE(c, INTF_PROG_FETCH_START,
fetch->fetch_start);
} else {
fetch_enable &= ~BIT(31);
}
DPU_REG_WRITE(c, INTF_CONFIG, fetch_enable);
}
static void dpu_hw_intf_get_status(
struct dpu_hw_intf *intf,
struct intf_status *s)
{
struct dpu_hw_blk_reg_map *c = &intf->hw;
s->is_en = DPU_REG_READ(c, INTF_TIMING_ENGINE_EN);
if (s->is_en) {
s->frame_count = DPU_REG_READ(c, INTF_FRAME_COUNT);
s->line_count = DPU_REG_READ(c, INTF_LINE_COUNT);
} else {
s->line_count = 0;
s->frame_count = 0;
}
}
static u32 dpu_hw_intf_get_line_count(struct dpu_hw_intf *intf)
{
struct dpu_hw_blk_reg_map *c;
if (!intf)
return 0;
c = &intf->hw;
return DPU_REG_READ(c, INTF_LINE_COUNT);
}
static void _setup_intf_ops(struct dpu_hw_intf_ops *ops,
unsigned long cap)
{
ops->setup_timing_gen = dpu_hw_intf_setup_timing_engine;
ops->setup_prg_fetch = dpu_hw_intf_setup_prg_fetch;
ops->get_status = dpu_hw_intf_get_status;
ops->enable_timing = dpu_hw_intf_enable_timing_engine;
ops->get_line_count = dpu_hw_intf_get_line_count;
}
static struct dpu_hw_blk_ops dpu_hw_ops;
struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
void __iomem *addr,
struct dpu_mdss_cfg *m)
{
struct dpu_hw_intf *c;
struct dpu_intf_cfg *cfg;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
return ERR_PTR(-ENOMEM);
cfg = _intf_offset(idx, m, addr, &c->hw);
if (IS_ERR_OR_NULL(cfg)) {
kfree(c);
pr_err("failed to create dpu_hw_intf %d\n", idx);
return ERR_PTR(-EINVAL);
}
/*
* Assign ops
*/
c->idx = idx;
c->cap = cfg;
c->mdss = m;
_setup_intf_ops(&c->ops, c->cap->features);
dpu_hw_blk_init(&c->base, DPU_HW_BLK_INTF, idx, &dpu_hw_ops);
return c;
}
void dpu_hw_intf_destroy(struct dpu_hw_intf *intf)
{
if (intf)
dpu_hw_blk_destroy(&intf->base);
kfree(intf);
}
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