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linux/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
Dan Carpenter cd0e0ca691 drm/panel: type promotion bug in s6e8aa0_read_mtp_id() 
The ARRAY_SIZE() macro is type size_t.  If s6e8aa0_dcs_read() returns a
negative error code, then "ret < ARRAY_SIZE(id)" is false because the
negative error code is type promoted to a high positive value.

Fixes: 02051ca063 ("drm/panel: add S6E8AA0 driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180704093807.s3lqsb2v6dg2k43d@kili.mountain
2018-07-10 17:59:05 +02:00

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/*
* MIPI-DSI based s6e8aa0 AMOLED LCD 5.3 inch panel driver.
*
* Copyright (c) 2013 Samsung Electronics Co., Ltd
*
* Inki Dae, <inki.dae@samsung.com>
* Donghwa Lee, <dh09.lee@samsung.com>
* Joongmock Shin <jmock.shin@samsung.com>
* Eunchul Kim <chulspro.kim@samsung.com>
* Tomasz Figa <t.figa@samsung.com>
* Andrzej Hajda <a.hajda@samsung.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.
*/
#include <drm/drmP.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <video/mipi_display.h>
#include <video/of_videomode.h>
#include <video/videomode.h>
#define LDI_MTP_LENGTH 24
#define GAMMA_LEVEL_NUM 25
#define GAMMA_TABLE_LEN 26
#define PANELCTL_SS_MASK (1 << 5)
#define PANELCTL_SS_1_800 (0 << 5)
#define PANELCTL_SS_800_1 (1 << 5)
#define PANELCTL_GTCON_MASK (7 << 2)
#define PANELCTL_GTCON_110 (6 << 2)
#define PANELCTL_GTCON_111 (7 << 2)
#define PANELCTL_CLK1_CON_MASK (7 << 3)
#define PANELCTL_CLK1_000 (0 << 3)
#define PANELCTL_CLK1_001 (1 << 3)
#define PANELCTL_CLK2_CON_MASK (7 << 0)
#define PANELCTL_CLK2_000 (0 << 0)
#define PANELCTL_CLK2_001 (1 << 0)
#define PANELCTL_INT1_CON_MASK (7 << 3)
#define PANELCTL_INT1_000 (0 << 3)
#define PANELCTL_INT1_001 (1 << 3)
#define PANELCTL_INT2_CON_MASK (7 << 0)
#define PANELCTL_INT2_000 (0 << 0)
#define PANELCTL_INT2_001 (1 << 0)
#define PANELCTL_BICTL_CON_MASK (7 << 3)
#define PANELCTL_BICTL_000 (0 << 3)
#define PANELCTL_BICTL_001 (1 << 3)
#define PANELCTL_BICTLB_CON_MASK (7 << 0)
#define PANELCTL_BICTLB_000 (0 << 0)
#define PANELCTL_BICTLB_001 (1 << 0)
#define PANELCTL_EM_CLK1_CON_MASK (7 << 3)
#define PANELCTL_EM_CLK1_110 (6 << 3)
#define PANELCTL_EM_CLK1_111 (7 << 3)
#define PANELCTL_EM_CLK1B_CON_MASK (7 << 0)
#define PANELCTL_EM_CLK1B_110 (6 << 0)
#define PANELCTL_EM_CLK1B_111 (7 << 0)
#define PANELCTL_EM_CLK2_CON_MASK (7 << 3)
#define PANELCTL_EM_CLK2_110 (6 << 3)
#define PANELCTL_EM_CLK2_111 (7 << 3)
#define PANELCTL_EM_CLK2B_CON_MASK (7 << 0)
#define PANELCTL_EM_CLK2B_110 (6 << 0)
#define PANELCTL_EM_CLK2B_111 (7 << 0)
#define PANELCTL_EM_INT1_CON_MASK (7 << 3)
#define PANELCTL_EM_INT1_000 (0 << 3)
#define PANELCTL_EM_INT1_001 (1 << 3)
#define PANELCTL_EM_INT2_CON_MASK (7 << 0)
#define PANELCTL_EM_INT2_000 (0 << 0)
#define PANELCTL_EM_INT2_001 (1 << 0)
#define AID_DISABLE (0x4)
#define AID_1 (0x5)
#define AID_2 (0x6)
#define AID_3 (0x7)
typedef u8 s6e8aa0_gamma_table[GAMMA_TABLE_LEN];
struct s6e8aa0_variant {
u8 version;
const s6e8aa0_gamma_table *gamma_tables;
};
struct s6e8aa0 {
struct device *dev;
struct drm_panel panel;
struct regulator_bulk_data supplies[2];
struct gpio_desc *reset_gpio;
u32 power_on_delay;
u32 reset_delay;
u32 init_delay;
bool flip_horizontal;
bool flip_vertical;
struct videomode vm;
u32 width_mm;
u32 height_mm;
u8 version;
u8 id;
const struct s6e8aa0_variant *variant;
int brightness;
/* This field is tested by functions directly accessing DSI bus before
* transfer, transfer is skipped if it is set. In case of transfer
* failure or unexpected response the field is set to error value.
* Such construct allows to eliminate many checks in higher level
* functions.
*/
int error;
};
static inline struct s6e8aa0 *panel_to_s6e8aa0(struct drm_panel *panel)
{
return container_of(panel, struct s6e8aa0, panel);
}
static int s6e8aa0_clear_error(struct s6e8aa0 *ctx)
{
int ret = ctx->error;
ctx->error = 0;
return ret;
}
static void s6e8aa0_dcs_write(struct s6e8aa0 *ctx, const void *data, size_t len)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
ssize_t ret;
if (ctx->error < 0)
return;
ret = mipi_dsi_dcs_write_buffer(dsi, data, len);
if (ret < 0) {
dev_err(ctx->dev, "error %zd writing dcs seq: %*ph\n", ret,
(int)len, data);
ctx->error = ret;
}
}
static int s6e8aa0_dcs_read(struct s6e8aa0 *ctx, u8 cmd, void *data, size_t len)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
int ret;
if (ctx->error < 0)
return ctx->error;
ret = mipi_dsi_dcs_read(dsi, cmd, data, len);
if (ret < 0) {
dev_err(ctx->dev, "error %d reading dcs seq(%#x)\n", ret, cmd);
ctx->error = ret;
}
return ret;
}
#define s6e8aa0_dcs_write_seq(ctx, seq...) \
({\
const u8 d[] = { seq };\
BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "DCS sequence too big for stack");\
s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\
})
#define s6e8aa0_dcs_write_seq_static(ctx, seq...) \
({\
static const u8 d[] = { seq };\
s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\
})
static void s6e8aa0_apply_level_1_key(struct s6e8aa0 *ctx)
{
s6e8aa0_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a);
}
static void s6e8aa0_panel_cond_set_v142(struct s6e8aa0 *ctx)
{
static const u8 aids[] = {
0x04, 0x04, 0x04, 0x04, 0x04, 0x60, 0x80, 0xA0
};
u8 aid = aids[ctx->id >> 5];
u8 cfg = 0x3d;
u8 clk_con = 0xc8;
u8 int_con = 0x08;
u8 bictl_con = 0x48;
u8 em_clk1_con = 0xff;
u8 em_clk2_con = 0xff;
u8 em_int_con = 0xc8;
if (ctx->flip_vertical) {
/* GTCON */
cfg &= ~(PANELCTL_GTCON_MASK);
cfg |= (PANELCTL_GTCON_110);
}
if (ctx->flip_horizontal) {
/* SS */
cfg &= ~(PANELCTL_SS_MASK);
cfg |= (PANELCTL_SS_1_800);
}
if (ctx->flip_horizontal || ctx->flip_vertical) {
/* CLK1,2_CON */
clk_con &= ~(PANELCTL_CLK1_CON_MASK |
PANELCTL_CLK2_CON_MASK);
clk_con |= (PANELCTL_CLK1_000 | PANELCTL_CLK2_001);
/* INT1,2_CON */
int_con &= ~(PANELCTL_INT1_CON_MASK |
PANELCTL_INT2_CON_MASK);
int_con |= (PANELCTL_INT1_000 | PANELCTL_INT2_001);
/* BICTL,B_CON */
bictl_con &= ~(PANELCTL_BICTL_CON_MASK |
PANELCTL_BICTLB_CON_MASK);
bictl_con |= (PANELCTL_BICTL_000 |
PANELCTL_BICTLB_001);
/* EM_CLK1,1B_CON */
em_clk1_con &= ~(PANELCTL_EM_CLK1_CON_MASK |
PANELCTL_EM_CLK1B_CON_MASK);
em_clk1_con |= (PANELCTL_EM_CLK1_110 |
PANELCTL_EM_CLK1B_110);
/* EM_CLK2,2B_CON */
em_clk2_con &= ~(PANELCTL_EM_CLK2_CON_MASK |
PANELCTL_EM_CLK2B_CON_MASK);
em_clk2_con |= (PANELCTL_EM_CLK2_110 |
PANELCTL_EM_CLK2B_110);
/* EM_INT1,2_CON */
em_int_con &= ~(PANELCTL_EM_INT1_CON_MASK |
PANELCTL_EM_INT2_CON_MASK);
em_int_con |= (PANELCTL_EM_INT1_000 |
PANELCTL_EM_INT2_001);
}
s6e8aa0_dcs_write_seq(ctx,
0xf8, cfg, 0x35, 0x00, 0x00, 0x00, 0x93, 0x00,
0x3c, 0x78, 0x08, 0x27, 0x7d, 0x3f, 0x00, 0x00,
0x00, 0x20, aid, 0x08, 0x6e, 0x00, 0x00, 0x00,
0x02, 0x07, 0x07, 0x23, 0x23, 0xc0, clk_con, int_con,
bictl_con, 0xc1, 0x00, 0xc1, em_clk1_con, em_clk2_con,
em_int_con);
}
static void s6e8aa0_panel_cond_set(struct s6e8aa0 *ctx)
{
if (ctx->version < 142)
s6e8aa0_dcs_write_seq_static(ctx,
0xf8, 0x19, 0x35, 0x00, 0x00, 0x00, 0x94, 0x00,
0x3c, 0x78, 0x10, 0x27, 0x08, 0x6e, 0x00, 0x00,
0x00, 0x00, 0x04, 0x08, 0x6e, 0x00, 0x00, 0x00,
0x00, 0x07, 0x07, 0x23, 0x6e, 0xc0, 0xc1, 0x01,
0x81, 0xc1, 0x00, 0xc3, 0xf6, 0xf6, 0xc1
);
else
s6e8aa0_panel_cond_set_v142(ctx);
}
static void s6e8aa0_display_condition_set(struct s6e8aa0 *ctx)
{
s6e8aa0_dcs_write_seq_static(ctx, 0xf2, 0x80, 0x03, 0x0d);
}
static void s6e8aa0_etc_source_control(struct s6e8aa0 *ctx)
{
s6e8aa0_dcs_write_seq_static(ctx, 0xf6, 0x00, 0x02, 0x00);
}
static void s6e8aa0_etc_pentile_control(struct s6e8aa0 *ctx)
{
static const u8 pent32[] = {
0xb6, 0x0c, 0x02, 0x03, 0x32, 0xc0, 0x44, 0x44, 0xc0, 0x00
};
static const u8 pent142[] = {
0xb6, 0x0c, 0x02, 0x03, 0x32, 0xff, 0x44, 0x44, 0xc0, 0x00
};
if (ctx->version < 142)
s6e8aa0_dcs_write(ctx, pent32, ARRAY_SIZE(pent32));
else
s6e8aa0_dcs_write(ctx, pent142, ARRAY_SIZE(pent142));
}
static void s6e8aa0_etc_power_control(struct s6e8aa0 *ctx)
{
static const u8 pwr142[] = {
0xf4, 0xcf, 0x0a, 0x12, 0x10, 0x1e, 0x33, 0x02
};
static const u8 pwr32[] = {
0xf4, 0xcf, 0x0a, 0x15, 0x10, 0x19, 0x33, 0x02
};
if (ctx->version < 142)
s6e8aa0_dcs_write(ctx, pwr32, ARRAY_SIZE(pwr32));
else
s6e8aa0_dcs_write(ctx, pwr142, ARRAY_SIZE(pwr142));
}
static void s6e8aa0_etc_elvss_control(struct s6e8aa0 *ctx)
{
u8 id = ctx->id ? 0 : 0x95;
s6e8aa0_dcs_write_seq(ctx, 0xb1, 0x04, id);
}
static void s6e8aa0_elvss_nvm_set_v142(struct s6e8aa0 *ctx)
{
u8 br;
switch (ctx->brightness) {
case 0 ... 6: /* 30cd ~ 100cd */
br = 0xdf;
break;
case 7 ... 11: /* 120cd ~ 150cd */
br = 0xdd;
break;
case 12 ... 15: /* 180cd ~ 210cd */
default:
br = 0xd9;
break;
case 16 ... 24: /* 240cd ~ 300cd */
br = 0xd0;
break;
}
s6e8aa0_dcs_write_seq(ctx, 0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e,
0xc4, 0x0f, 0x40, 0x41, br, 0x00, 0x60, 0x19);
}
static void s6e8aa0_elvss_nvm_set(struct s6e8aa0 *ctx)
{
if (ctx->version < 142)
s6e8aa0_dcs_write_seq_static(ctx,
0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e, 0xc4, 0x07,
0x40, 0x41, 0xc1, 0x00, 0x60, 0x19);
else
s6e8aa0_elvss_nvm_set_v142(ctx);
};
static void s6e8aa0_apply_level_2_key(struct s6e8aa0 *ctx)
{
s6e8aa0_dcs_write_seq_static(ctx, 0xfc, 0x5a, 0x5a);
}
static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v142[GAMMA_LEVEL_NUM] = {
{
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x62, 0x55, 0x55,
0xaf, 0xb1, 0xb1, 0xbd, 0xce, 0xb7, 0x9a, 0xb1,
0x90, 0xb2, 0xc4, 0xae, 0x00, 0x60, 0x00, 0x40,
0x00, 0x70,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x74, 0x68, 0x69,
0xb8, 0xc1, 0xb7, 0xbd, 0xcd, 0xb8, 0x93, 0xab,
0x88, 0xb4, 0xc4, 0xb1, 0x00, 0x6b, 0x00, 0x4d,
0x00, 0x7d,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x95, 0x8a, 0x89,
0xb4, 0xc6, 0xb2, 0xc5, 0xd2, 0xbf, 0x90, 0xa8,
0x85, 0xb5, 0xc4, 0xb3, 0x00, 0x7b, 0x00, 0x5d,
0x00, 0x8f,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9f, 0x98, 0x92,
0xb3, 0xc4, 0xb0, 0xbc, 0xcc, 0xb4, 0x91, 0xa6,
0x87, 0xb5, 0xc5, 0xb4, 0x00, 0x87, 0x00, 0x6a,
0x00, 0x9e,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x99, 0x93, 0x8b,
0xb2, 0xc2, 0xb0, 0xbd, 0xce, 0xb4, 0x90, 0xa6,
0x87, 0xb3, 0xc3, 0xb2, 0x00, 0x8d, 0x00, 0x70,
0x00, 0xa4,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xa5, 0x99,
0xb2, 0xc2, 0xb0, 0xbb, 0xcd, 0xb1, 0x93, 0xa7,
0x8a, 0xb2, 0xc1, 0xb0, 0x00, 0x92, 0x00, 0x75,
0x00, 0xaa,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xa0, 0x93,
0xb6, 0xc4, 0xb4, 0xb5, 0xc8, 0xaa, 0x94, 0xa9,
0x8c, 0xb2, 0xc0, 0xb0, 0x00, 0x97, 0x00, 0x7a,
0x00, 0xaf,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xa7, 0x96,
0xb3, 0xc2, 0xb0, 0xba, 0xcb, 0xb0, 0x94, 0xa8,
0x8c, 0xb0, 0xbf, 0xaf, 0x00, 0x9f, 0x00, 0x83,
0x00, 0xb9,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9d, 0xa2, 0x90,
0xb6, 0xc5, 0xb3, 0xb8, 0xc9, 0xae, 0x94, 0xa8,
0x8d, 0xaf, 0xbd, 0xad, 0x00, 0xa4, 0x00, 0x88,
0x00, 0xbf,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xac, 0x97,
0xb4, 0xc4, 0xb1, 0xbb, 0xcb, 0xb2, 0x93, 0xa7,
0x8d, 0xae, 0xbc, 0xad, 0x00, 0xa7, 0x00, 0x8c,
0x00, 0xc3,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa2, 0xa9, 0x93,
0xb6, 0xc5, 0xb2, 0xba, 0xc9, 0xb0, 0x93, 0xa7,
0x8d, 0xae, 0xbb, 0xac, 0x00, 0xab, 0x00, 0x90,
0x00, 0xc8,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9e, 0xa6, 0x8f,
0xb7, 0xc6, 0xb3, 0xb8, 0xc8, 0xb0, 0x93, 0xa6,
0x8c, 0xae, 0xbb, 0xad, 0x00, 0xae, 0x00, 0x93,
0x00, 0xcc,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb4, 0x9c,
0xb3, 0xc3, 0xaf, 0xb7, 0xc7, 0xaf, 0x93, 0xa6,
0x8c, 0xaf, 0xbc, 0xad, 0x00, 0xb1, 0x00, 0x97,
0x00, 0xcf,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xb1, 0x98,
0xb1, 0xc2, 0xab, 0xba, 0xc9, 0xb2, 0x93, 0xa6,
0x8d, 0xae, 0xba, 0xab, 0x00, 0xb5, 0x00, 0x9b,
0x00, 0xd4,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xae, 0x94,
0xb2, 0xc3, 0xac, 0xbb, 0xca, 0xb4, 0x91, 0xa4,
0x8a, 0xae, 0xba, 0xac, 0x00, 0xb8, 0x00, 0x9e,
0x00, 0xd8,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb7, 0x9c,
0xae, 0xc0, 0xa9, 0xba, 0xc9, 0xb3, 0x92, 0xa5,
0x8b, 0xad, 0xb9, 0xab, 0x00, 0xbb, 0x00, 0xa1,
0x00, 0xdc,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb4, 0x97,
0xb0, 0xc1, 0xaa, 0xb9, 0xc8, 0xb2, 0x92, 0xa5,
0x8c, 0xae, 0xb9, 0xab, 0x00, 0xbe, 0x00, 0xa4,
0x00, 0xdf,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94,
0xb0, 0xc2, 0xab, 0xbb, 0xc9, 0xb3, 0x91, 0xa4,
0x8b, 0xad, 0xb8, 0xaa, 0x00, 0xc1, 0x00, 0xa8,
0x00, 0xe2,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94,
0xae, 0xbf, 0xa8, 0xb9, 0xc8, 0xb3, 0x92, 0xa4,
0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xc4, 0x00, 0xab,
0x00, 0xe6,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb6, 0x98,
0xaf, 0xc0, 0xa8, 0xb8, 0xc7, 0xb2, 0x93, 0xa5,
0x8d, 0xad, 0xb7, 0xa9, 0x00, 0xc7, 0x00, 0xae,
0x00, 0xe9,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95,
0xaf, 0xc1, 0xa9, 0xb9, 0xc8, 0xb3, 0x92, 0xa4,
0x8b, 0xad, 0xb7, 0xaa, 0x00, 0xc9, 0x00, 0xb0,
0x00, 0xec,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95,
0xac, 0xbe, 0xa6, 0xbb, 0xc9, 0xb4, 0x90, 0xa3,
0x8a, 0xad, 0xb7, 0xa9, 0x00, 0xcc, 0x00, 0xb4,
0x00, 0xf0,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xb0, 0x91,
0xae, 0xc0, 0xa6, 0xba, 0xc8, 0xb4, 0x91, 0xa4,
0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xcf, 0x00, 0xb7,
0x00, 0xf3,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb8, 0x98,
0xab, 0xbd, 0xa4, 0xbb, 0xc9, 0xb5, 0x91, 0xa3,
0x8b, 0xac, 0xb6, 0xa8, 0x00, 0xd1, 0x00, 0xb9,
0x00, 0xf6,
}, {
0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb5, 0x95,
0xa9, 0xbc, 0xa1, 0xbb, 0xc9, 0xb5, 0x91, 0xa3,
0x8a, 0xad, 0xb6, 0xa8, 0x00, 0xd6, 0x00, 0xbf,
0x00, 0xfc,
},
};
static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v96[GAMMA_LEVEL_NUM] = {
{
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xdf, 0x1f, 0xd7, 0xdc, 0xb7, 0xe1, 0xc0, 0xaf,
0xc4, 0xd2, 0xd0, 0xcf, 0x00, 0x4d, 0x00, 0x40,
0x00, 0x5f,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xd5, 0x35, 0xcf, 0xdc, 0xc1, 0xe1, 0xbf, 0xb3,
0xc1, 0xd2, 0xd1, 0xce, 0x00, 0x53, 0x00, 0x46,
0x00, 0x67,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xd2, 0x64, 0xcf, 0xdb, 0xc6, 0xe1, 0xbd, 0xb3,
0xbd, 0xd2, 0xd2, 0xce, 0x00, 0x59, 0x00, 0x4b,
0x00, 0x6e,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xd0, 0x7c, 0xcf, 0xdb, 0xc9, 0xe0, 0xbc, 0xb4,
0xbb, 0xcf, 0xd1, 0xcc, 0x00, 0x5f, 0x00, 0x50,
0x00, 0x75,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xd0, 0x8e, 0xd1, 0xdb, 0xcc, 0xdf, 0xbb, 0xb6,
0xb9, 0xd0, 0xd1, 0xcd, 0x00, 0x63, 0x00, 0x54,
0x00, 0x7a,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xd1, 0x9e, 0xd5, 0xda, 0xcd, 0xdd, 0xbb, 0xb7,
0xb9, 0xce, 0xce, 0xc9, 0x00, 0x68, 0x00, 0x59,
0x00, 0x81,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
0xd0, 0xa5, 0xd6, 0xda, 0xcf, 0xdd, 0xbb, 0xb7,
0xb8, 0xcc, 0xcd, 0xc7, 0x00, 0x6c, 0x00, 0x5c,
0x00, 0x86,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xfe,
0xd0, 0xae, 0xd7, 0xd9, 0xd0, 0xdb, 0xb9, 0xb6,
0xb5, 0xca, 0xcc, 0xc5, 0x00, 0x74, 0x00, 0x63,
0x00, 0x90,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf9,
0xcf, 0xb0, 0xd6, 0xd9, 0xd1, 0xdb, 0xb9, 0xb6,
0xb4, 0xca, 0xcb, 0xc5, 0x00, 0x77, 0x00, 0x66,
0x00, 0x94,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf7,
0xcf, 0xb3, 0xd7, 0xd8, 0xd1, 0xd9, 0xb7, 0xb6,
0xb3, 0xc9, 0xca, 0xc3, 0x00, 0x7b, 0x00, 0x69,
0x00, 0x99,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfd, 0x2f, 0xf7,
0xdf, 0xb5, 0xd6, 0xd8, 0xd1, 0xd8, 0xb6, 0xb5,
0xb2, 0xca, 0xcb, 0xc4, 0x00, 0x7e, 0x00, 0x6c,
0x00, 0x9d,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfa, 0x2f, 0xf5,
0xce, 0xb6, 0xd5, 0xd7, 0xd2, 0xd8, 0xb6, 0xb4,
0xb0, 0xc7, 0xc9, 0xc1, 0x00, 0x84, 0x00, 0x71,
0x00, 0xa5,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf7, 0x2f, 0xf2,
0xce, 0xb9, 0xd5, 0xd8, 0xd2, 0xd8, 0xb4, 0xb4,
0xaf, 0xc7, 0xc9, 0xc1, 0x00, 0x87, 0x00, 0x73,
0x00, 0xa8,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf5, 0x2f, 0xf0,
0xdf, 0xba, 0xd5, 0xd7, 0xd2, 0xd7, 0xb4, 0xb4,
0xaf, 0xc5, 0xc7, 0xbf, 0x00, 0x8a, 0x00, 0x76,
0x00, 0xac,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf2, 0x2f, 0xed,
0xcE, 0xbb, 0xd4, 0xd6, 0xd2, 0xd6, 0xb5, 0xb4,
0xaF, 0xc5, 0xc7, 0xbf, 0x00, 0x8c, 0x00, 0x78,
0x00, 0xaf,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x2f, 0xeb,
0xcd, 0xbb, 0xd2, 0xd7, 0xd3, 0xd6, 0xb3, 0xb4,
0xae, 0xc5, 0xc6, 0xbe, 0x00, 0x91, 0x00, 0x7d,
0x00, 0xb6,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xee, 0x2f, 0xea,
0xce, 0xbd, 0xd4, 0xd6, 0xd2, 0xd5, 0xb2, 0xb3,
0xad, 0xc3, 0xc4, 0xbb, 0x00, 0x94, 0x00, 0x7f,
0x00, 0xba,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xec, 0x2f, 0xe8,
0xce, 0xbe, 0xd3, 0xd6, 0xd3, 0xd5, 0xb2, 0xb2,
0xac, 0xc3, 0xc5, 0xbc, 0x00, 0x96, 0x00, 0x81,
0x00, 0xbd,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xeb, 0x2f, 0xe7,
0xce, 0xbf, 0xd3, 0xd6, 0xd2, 0xd5, 0xb1, 0xb2,
0xab, 0xc2, 0xc4, 0xbb, 0x00, 0x99, 0x00, 0x83,
0x00, 0xc0,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x5f, 0xe9,
0xca, 0xbf, 0xd3, 0xd5, 0xd2, 0xd4, 0xb2, 0xb2,
0xab, 0xc1, 0xc4, 0xba, 0x00, 0x9b, 0x00, 0x85,
0x00, 0xc3,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xea, 0x5f, 0xe8,
0xee, 0xbf, 0xd2, 0xd5, 0xd2, 0xd4, 0xb1, 0xb2,
0xab, 0xc1, 0xc2, 0xb9, 0x00, 0x9D, 0x00, 0x87,
0x00, 0xc6,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe9, 0x5f, 0xe7,
0xcd, 0xbf, 0xd2, 0xd6, 0xd2, 0xd4, 0xb1, 0xb2,
0xab, 0xbe, 0xc0, 0xb7, 0x00, 0xa1, 0x00, 0x8a,
0x00, 0xca,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x61, 0xe6,
0xcd, 0xbf, 0xd1, 0xd6, 0xd3, 0xd4, 0xaf, 0xb0,
0xa9, 0xbe, 0xc1, 0xb7, 0x00, 0xa3, 0x00, 0x8b,
0x00, 0xce,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x62, 0xe5,
0xcc, 0xc0, 0xd0, 0xd6, 0xd2, 0xd4, 0xaf, 0xb1,
0xa9, 0xbd, 0xc0, 0xb6, 0x00, 0xa5, 0x00, 0x8d,
0x00, 0xd0,
}, {
0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe7, 0x7f, 0xe3,
0xcc, 0xc1, 0xd0, 0xd5, 0xd3, 0xd3, 0xae, 0xaf,
0xa8, 0xbe, 0xc0, 0xb7, 0x00, 0xa8, 0x00, 0x90,
0x00, 0xd3,
}
};
static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v32[GAMMA_LEVEL_NUM] = {
{
0xfa, 0x01, 0x43, 0x14, 0x45, 0x72, 0x5e, 0x6b,
0xa1, 0xa7, 0x9a, 0xb4, 0xcb, 0xb8, 0x92, 0xac,
0x97, 0xb4, 0xc3, 0xb5, 0x00, 0x4e, 0x00, 0x37,
0x00, 0x58,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0x85, 0x71, 0x7d,
0xa6, 0xb6, 0xa1, 0xb5, 0xca, 0xba, 0x93, 0xac,
0x98, 0xb2, 0xc0, 0xaf, 0x00, 0x59, 0x00, 0x43,
0x00, 0x64,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xa4, 0x94, 0x9e,
0xa0, 0xbb, 0x9c, 0xc3, 0xd2, 0xc6, 0x93, 0xaa,
0x95, 0xb7, 0xc2, 0xb4, 0x00, 0x65, 0x00, 0x50,
0x00, 0x74,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa1, 0xa6,
0xa0, 0xb9, 0x9b, 0xc3, 0xd1, 0xc8, 0x90, 0xa6,
0x90, 0xbb, 0xc3, 0xb7, 0x00, 0x6f, 0x00, 0x5b,
0x00, 0x80,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xa6, 0x9d, 0x9f,
0x9f, 0xb8, 0x9a, 0xc7, 0xd5, 0xcc, 0x90, 0xa5,
0x8f, 0xb8, 0xc1, 0xb6, 0x00, 0x74, 0x00, 0x60,
0x00, 0x85,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb3, 0xae, 0xae,
0x9e, 0xb7, 0x9a, 0xc8, 0xd6, 0xce, 0x91, 0xa6,
0x90, 0xb6, 0xc0, 0xb3, 0x00, 0x78, 0x00, 0x65,
0x00, 0x8a,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa9, 0xa8,
0xa3, 0xb9, 0x9e, 0xc4, 0xd3, 0xcb, 0x94, 0xa6,
0x90, 0xb6, 0xbf, 0xb3, 0x00, 0x7c, 0x00, 0x69,
0x00, 0x8e,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xaf, 0xaf, 0xa9,
0xa5, 0xbc, 0xa2, 0xc7, 0xd5, 0xcd, 0x93, 0xa5,
0x8f, 0xb4, 0xbd, 0xb1, 0x00, 0x83, 0x00, 0x70,
0x00, 0x96,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xab, 0xa3,
0xaa, 0xbf, 0xa7, 0xc5, 0xd3, 0xcb, 0x93, 0xa5,
0x8f, 0xb2, 0xbb, 0xb0, 0x00, 0x86, 0x00, 0x74,
0x00, 0x9b,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xb5, 0xab,
0xab, 0xc0, 0xa9, 0xc7, 0xd4, 0xcc, 0x94, 0xa4,
0x8f, 0xb1, 0xbb, 0xaf, 0x00, 0x8a, 0x00, 0x77,
0x00, 0x9e,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb2, 0xa7,
0xae, 0xc2, 0xab, 0xc5, 0xd3, 0xca, 0x93, 0xa4,
0x8f, 0xb1, 0xba, 0xae, 0x00, 0x8d, 0x00, 0x7b,
0x00, 0xa2,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xaf, 0xa3,
0xb0, 0xc3, 0xae, 0xc4, 0xd1, 0xc8, 0x93, 0xa4,
0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x8f, 0x00, 0x7d,
0x00, 0xa5,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbd, 0xaf,
0xae, 0xc1, 0xab, 0xc2, 0xd0, 0xc6, 0x94, 0xa4,
0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x92, 0x00, 0x80,
0x00, 0xa8,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xb9, 0xac,
0xad, 0xc1, 0xab, 0xc4, 0xd1, 0xc7, 0x95, 0xa4,
0x90, 0xb0, 0xb9, 0xad, 0x00, 0x95, 0x00, 0x84,
0x00, 0xac,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb6, 0xa7,
0xaf, 0xc2, 0xae, 0xc5, 0xd1, 0xc7, 0x93, 0xa3,
0x8e, 0xb0, 0xb9, 0xad, 0x00, 0x98, 0x00, 0x86,
0x00, 0xaf,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbf, 0xaf,
0xad, 0xc1, 0xab, 0xc3, 0xd0, 0xc6, 0x94, 0xa3,
0x8f, 0xaf, 0xb8, 0xac, 0x00, 0x9a, 0x00, 0x89,
0x00, 0xb2,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xbc, 0xac,
0xaf, 0xc2, 0xad, 0xc2, 0xcf, 0xc4, 0x94, 0xa3,
0x90, 0xaf, 0xb8, 0xad, 0x00, 0x9c, 0x00, 0x8b,
0x00, 0xb5,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7,
0xb1, 0xc4, 0xaf, 0xc3, 0xcf, 0xc5, 0x94, 0xa3,
0x8f, 0xae, 0xb7, 0xac, 0x00, 0x9f, 0x00, 0x8e,
0x00, 0xb8,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7,
0xaf, 0xc2, 0xad, 0xc1, 0xce, 0xc3, 0x95, 0xa3,
0x90, 0xad, 0xb6, 0xab, 0x00, 0xa2, 0x00, 0x91,
0x00, 0xbb,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xbe, 0xac,
0xb1, 0xc4, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa4,
0x91, 0xad, 0xb6, 0xab, 0x00, 0xa4, 0x00, 0x93,
0x00, 0xbd,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8,
0xb3, 0xc5, 0xb2, 0xc1, 0xcd, 0xc2, 0x95, 0xa3,
0x90, 0xad, 0xb6, 0xab, 0x00, 0xa6, 0x00, 0x95,
0x00, 0xc0,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8,
0xb0, 0xc3, 0xaf, 0xc2, 0xce, 0xc2, 0x94, 0xa2,
0x90, 0xac, 0xb6, 0xab, 0x00, 0xa8, 0x00, 0x98,
0x00, 0xc3,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xb8, 0xa5,
0xb3, 0xc5, 0xb2, 0xc1, 0xcc, 0xc0, 0x95, 0xa2,
0x90, 0xad, 0xb6, 0xab, 0x00, 0xaa, 0x00, 0x9a,
0x00, 0xc5,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xc0, 0xac,
0xb0, 0xc3, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa2,
0x90, 0xac, 0xb5, 0xa9, 0x00, 0xac, 0x00, 0x9c,
0x00, 0xc8,
}, {
0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbd, 0xa8,
0xaf, 0xc2, 0xaf, 0xc1, 0xcc, 0xc0, 0x95, 0xa2,
0x90, 0xac, 0xb5, 0xaa, 0x00, 0xb1, 0x00, 0xa1,
0x00, 0xcc,
},
};
static const struct s6e8aa0_variant s6e8aa0_variants[] = {
{
.version = 32,
.gamma_tables = s6e8aa0_gamma_tables_v32,
}, {
.version = 96,
.gamma_tables = s6e8aa0_gamma_tables_v96,
}, {
.version = 142,
.gamma_tables = s6e8aa0_gamma_tables_v142,
}, {
.version = 210,
.gamma_tables = s6e8aa0_gamma_tables_v142,
}
};
static void s6e8aa0_brightness_set(struct s6e8aa0 *ctx)
{
const u8 *gamma;
if (ctx->error)
return;
gamma = ctx->variant->gamma_tables[ctx->brightness];
if (ctx->version >= 142)
s6e8aa0_elvss_nvm_set(ctx);
s6e8aa0_dcs_write(ctx, gamma, GAMMA_TABLE_LEN);
/* update gamma table. */
s6e8aa0_dcs_write_seq_static(ctx, 0xf7, 0x03);
}
static void s6e8aa0_panel_init(struct s6e8aa0 *ctx)
{
s6e8aa0_apply_level_1_key(ctx);
s6e8aa0_apply_level_2_key(ctx);
msleep(20);
s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
msleep(40);
s6e8aa0_panel_cond_set(ctx);
s6e8aa0_display_condition_set(ctx);
s6e8aa0_brightness_set(ctx);
s6e8aa0_etc_source_control(ctx);
s6e8aa0_etc_pentile_control(ctx);
s6e8aa0_elvss_nvm_set(ctx);
s6e8aa0_etc_power_control(ctx);
s6e8aa0_etc_elvss_control(ctx);
msleep(ctx->init_delay);
}
static void s6e8aa0_set_maximum_return_packet_size(struct s6e8aa0 *ctx,
u16 size)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
int ret;
if (ctx->error < 0)
return;
ret = mipi_dsi_set_maximum_return_packet_size(dsi, size);
if (ret < 0) {
dev_err(ctx->dev,
"error %d setting maximum return packet size to %d\n",
ret, size);
ctx->error = ret;
}
}
static void s6e8aa0_read_mtp_id(struct s6e8aa0 *ctx)
{
u8 id[3];
int ret, i;
ret = s6e8aa0_dcs_read(ctx, 0xd1, id, ARRAY_SIZE(id));
if (ret < 0 || ret < ARRAY_SIZE(id) || id[0] == 0x00) {
dev_err(ctx->dev, "read id failed\n");
ctx->error = -EIO;
return;
}
dev_info(ctx->dev, "ID: 0x%2x, 0x%2x, 0x%2x\n", id[0], id[1], id[2]);
for (i = 0; i < ARRAY_SIZE(s6e8aa0_variants); ++i) {
if (id[1] == s6e8aa0_variants[i].version)
break;
}
if (i >= ARRAY_SIZE(s6e8aa0_variants)) {
dev_err(ctx->dev, "unsupported display version %d\n", id[1]);
ctx->error = -EINVAL;
return;
}
ctx->variant = &s6e8aa0_variants[i];
ctx->version = id[1];
ctx->id = id[2];
}
static void s6e8aa0_set_sequence(struct s6e8aa0 *ctx)
{
s6e8aa0_set_maximum_return_packet_size(ctx, 3);
s6e8aa0_read_mtp_id(ctx);
s6e8aa0_panel_init(ctx);
s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
}
static int s6e8aa0_power_on(struct s6e8aa0 *ctx)
{
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
if (ret < 0)
return ret;
msleep(ctx->power_on_delay);
gpiod_set_value(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
gpiod_set_value(ctx->reset_gpio, 1);
msleep(ctx->reset_delay);
return 0;
}
static int s6e8aa0_power_off(struct s6e8aa0 *ctx)
{
return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
}
static int s6e8aa0_disable(struct drm_panel *panel)
{
return 0;
}
static int s6e8aa0_unprepare(struct drm_panel *panel)
{
struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
msleep(40);
s6e8aa0_clear_error(ctx);
return s6e8aa0_power_off(ctx);
}
static int s6e8aa0_prepare(struct drm_panel *panel)
{
struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
int ret;
ret = s6e8aa0_power_on(ctx);
if (ret < 0)
return ret;
s6e8aa0_set_sequence(ctx);
ret = ctx->error;
if (ret < 0)
s6e8aa0_unprepare(panel);
return ret;
}
static int s6e8aa0_enable(struct drm_panel *panel)
{
return 0;
}
static int s6e8aa0_get_modes(struct drm_panel *panel)
{
struct drm_connector *connector = panel->connector;
struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
struct drm_display_mode *mode;
mode = drm_mode_create(connector->dev);
if (!mode) {
DRM_ERROR("failed to create a new display mode\n");
return 0;
}
drm_display_mode_from_videomode(&ctx->vm, mode);
mode->width_mm = ctx->width_mm;
mode->height_mm = ctx->height_mm;
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(connector, mode);
return 1;
}
static const struct drm_panel_funcs s6e8aa0_drm_funcs = {
.disable = s6e8aa0_disable,
.unprepare = s6e8aa0_unprepare,
.prepare = s6e8aa0_prepare,
.enable = s6e8aa0_enable,
.get_modes = s6e8aa0_get_modes,
};
static int s6e8aa0_parse_dt(struct s6e8aa0 *ctx)
{
struct device *dev = ctx->dev;
struct device_node *np = dev->of_node;
int ret;
ret = of_get_videomode(np, &ctx->vm, 0);
if (ret < 0)
return ret;
of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);
of_property_read_u32(np, "reset-delay", &ctx->reset_delay);
of_property_read_u32(np, "init-delay", &ctx->init_delay);
of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);
of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);
ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal");
ctx->flip_vertical = of_property_read_bool(np, "flip-vertical");
return 0;
}
static int s6e8aa0_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct s6e8aa0 *ctx;
int ret;
ctx = devm_kzalloc(dev, sizeof(struct s6e8aa0), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
mipi_dsi_set_drvdata(dsi, ctx);
ctx->dev = dev;
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST
| MIPI_DSI_MODE_VIDEO_HFP | MIPI_DSI_MODE_VIDEO_HBP
| MIPI_DSI_MODE_VIDEO_HSA | MIPI_DSI_MODE_EOT_PACKET
| MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_AUTO_VERT;
ret = s6e8aa0_parse_dt(ctx);
if (ret < 0)
return ret;
ctx->supplies[0].supply = "vdd3";
ctx->supplies[1].supply = "vci";
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
ctx->supplies);
if (ret < 0) {
dev_err(dev, "failed to get regulators: %d\n", ret);
return ret;
}
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(dev, "cannot get reset-gpios %ld\n",
PTR_ERR(ctx->reset_gpio));
return PTR_ERR(ctx->reset_gpio);
}
ctx->brightness = GAMMA_LEVEL_NUM - 1;
drm_panel_init(&ctx->panel);
ctx->panel.dev = dev;
ctx->panel.funcs = &s6e8aa0_drm_funcs;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
ret = mipi_dsi_attach(dsi);
if (ret < 0)
drm_panel_remove(&ctx->panel);
return ret;
}
static int s6e8aa0_remove(struct mipi_dsi_device *dsi)
{
struct s6e8aa0 *ctx = mipi_dsi_get_drvdata(dsi);
mipi_dsi_detach(dsi);
drm_panel_remove(&ctx->panel);
return 0;
}
static const struct of_device_id s6e8aa0_of_match[] = {
{ .compatible = "samsung,s6e8aa0" },
{ }
};
MODULE_DEVICE_TABLE(of, s6e8aa0_of_match);
static struct mipi_dsi_driver s6e8aa0_driver = {
.probe = s6e8aa0_probe,
.remove = s6e8aa0_remove,
.driver = {
.name = "panel-samsung-s6e8aa0",
.of_match_table = s6e8aa0_of_match,
},
};
module_mipi_dsi_driver(s6e8aa0_driver);
MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
MODULE_AUTHOR("Joongmock Shin <jmock.shin@samsung.com>");
MODULE_AUTHOR("Eunchul Kim <chulspro.kim@samsung.com>");
MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>");
MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
MODULE_DESCRIPTION("MIPI-DSI based s6e8aa0 AMOLED LCD Panel Driver");
MODULE_LICENSE("GPL v2");
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