u-boot/drivers/video/exynos/exynos_mipi_dsi.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

324 lines
7.9 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2012 Samsung Electronics
*
* Author: InKi Dae <inki.dae@samsung.com>
* Author: Donghwa Lee <dh09.lee@samsung.com>
*/
#include <common.h>
#include <malloc.h>
#include <fdtdec.h>
#include <linux/libfdt.h>
#include <linux/compat.h>
#include <linux/err.h>
#include <asm/arch/dsim.h>
#include <asm/arch/mipi_dsim.h>
#include <asm/arch/power.h>
#include <asm/arch/cpu.h>
#include <asm/arch/clk.h>
#include "exynos_mipi_dsi_lowlevel.h"
#include "exynos_mipi_dsi_common.h"
#define master_to_driver(a) (a->dsim_lcd_drv)
#define master_to_device(a) (a->dsim_lcd_dev)
DECLARE_GLOBAL_DATA_PTR;
struct mipi_dsim_ddi {
int bus_id;
struct list_head list;
struct mipi_dsim_lcd_device *dsim_lcd_dev;
struct mipi_dsim_lcd_driver *dsim_lcd_drv;
};
static LIST_HEAD(dsim_ddi_list);
static LIST_HEAD(dsim_lcd_dev_list);
int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
{
struct mipi_dsim_ddi *dsim_ddi;
if (!lcd_dev) {
debug("mipi_dsim_lcd_device is NULL.\n");
return -EFAULT;
}
if (!lcd_dev->name) {
debug("dsim_lcd_device name is NULL.\n");
return -EFAULT;
}
dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
if (!dsim_ddi) {
debug("failed to allocate dsim_ddi object.\n");
return -EFAULT;
}
dsim_ddi->dsim_lcd_dev = lcd_dev;
list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
return 0;
}
struct mipi_dsim_ddi
*exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv)
{
struct mipi_dsim_ddi *dsim_ddi;
struct mipi_dsim_lcd_device *lcd_dev;
list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
lcd_dev = dsim_ddi->dsim_lcd_dev;
if (!lcd_dev)
continue;
if (lcd_drv->id >= 0) {
if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
lcd_drv->id == lcd_dev->id) {
/**
* bus_id would be used to identify
* connected bus.
*/
dsim_ddi->bus_id = lcd_dev->bus_id;
return dsim_ddi;
}
} else {
if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
/**
* bus_id would be used to identify
* connected bus.
*/
dsim_ddi->bus_id = lcd_dev->bus_id;
return dsim_ddi;
}
}
kfree(dsim_ddi);
list_del(&dsim_ddi_list);
}
return NULL;
}
int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
{
struct mipi_dsim_ddi *dsim_ddi;
if (!lcd_drv) {
debug("mipi_dsim_lcd_driver is NULL.\n");
return -EFAULT;
}
if (!lcd_drv->name) {
debug("dsim_lcd_driver name is NULL.\n");
return -EFAULT;
}
dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
if (!dsim_ddi) {
debug("mipi_dsim_ddi object not found.\n");
return -EFAULT;
}
dsim_ddi->dsim_lcd_drv = lcd_drv;
debug("registered panel driver(%s) to mipi-dsi driver.\n",
lcd_drv->name);
return 0;
}
struct mipi_dsim_ddi
*exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim,
const char *name)
{
struct mipi_dsim_ddi *dsim_ddi;
struct mipi_dsim_lcd_driver *lcd_drv;
struct mipi_dsim_lcd_device *lcd_dev;
list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
lcd_drv = dsim_ddi->dsim_lcd_drv;
lcd_dev = dsim_ddi->dsim_lcd_dev;
if (!lcd_drv || !lcd_dev)
continue;
debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
lcd_drv->id, lcd_dev->id);
if ((strcmp(lcd_drv->name, name) == 0)) {
lcd_dev->master = dsim;
dsim->dsim_lcd_dev = lcd_dev;
dsim->dsim_lcd_drv = lcd_drv;
return dsim_ddi;
}
}
return NULL;
}
/* define MIPI-DSI Master operations. */
static struct mipi_dsim_master_ops master_ops = {
.cmd_write = exynos_mipi_dsi_wr_data,
.get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
.clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
};
int exynos_mipi_dsi_init(struct exynos_platform_mipi_dsim *dsim_pd)
{
struct mipi_dsim_device *dsim;
struct mipi_dsim_config *dsim_config;
struct mipi_dsim_ddi *dsim_ddi;
dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
if (!dsim) {
debug("failed to allocate dsim object.\n");
return -EFAULT;
}
/* get mipi_dsim_config. */
dsim_config = dsim_pd->dsim_config;
if (dsim_config == NULL) {
debug("failed to get dsim config data.\n");
return -EFAULT;
}
dsim->pd = dsim_pd;
dsim->dsim_config = dsim_config;
dsim->master_ops = &master_ops;
/* bind lcd ddi matched with panel name. */
dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
if (!dsim_ddi) {
debug("mipi_dsim_ddi object not found.\n");
return -ENOSYS;
}
if (dsim_pd->lcd_power)
dsim_pd->lcd_power();
if (dsim_pd->mipi_power)
dsim_pd->mipi_power();
/* phy_enable(unsigned int dev_index, unsigned int enable) */
if (dsim_pd->phy_enable)
dsim_pd->phy_enable(0, 1);
set_mipi_clk();
exynos_mipi_dsi_init_dsim(dsim);
exynos_mipi_dsi_init_link(dsim);
exynos_mipi_dsi_set_hs_enable(dsim);
/* set display timing. */
exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
/* initialize mipi-dsi client(lcd panel). */
if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
}
debug("mipi-dsi driver(%s mode) has been probed.\n",
(dsim_config->e_interface == DSIM_COMMAND) ?
"CPU" : "RGB");
return 0;
}
int exynos_dsim_config_parse_dt(const void *blob, struct mipi_dsim_config *dt,
struct mipi_dsim_lcd_device *lcd_dt)
{
int node;
node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
if (node <= 0) {
printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
return -ENODEV;
}
dt->e_interface = fdtdec_get_int(blob, node,
"samsung,dsim-config-e-interface", 0);
dt->e_virtual_ch = fdtdec_get_int(blob, node,
"samsung,dsim-config-e-virtual-ch", 0);
dt->e_pixel_format = fdtdec_get_int(blob, node,
"samsung,dsim-config-e-pixel-format", 0);
dt->e_burst_mode = fdtdec_get_int(blob, node,
"samsung,dsim-config-e-burst-mode", 0);
dt->e_no_data_lane = fdtdec_get_int(blob, node,
"samsung,dsim-config-e-no-data-lane", 0);
dt->e_byte_clk = fdtdec_get_int(blob, node,
"samsung,dsim-config-e-byte-clk", 0);
dt->hfp = fdtdec_get_int(blob, node,
"samsung,dsim-config-hfp", 0);
dt->p = fdtdec_get_int(blob, node,
"samsung,dsim-config-p", 0);
dt->m = fdtdec_get_int(blob, node,
"samsung,dsim-config-m", 0);
dt->s = fdtdec_get_int(blob, node,
"samsung,dsim-config-s", 0);
dt->pll_stable_time = fdtdec_get_int(blob, node,
"samsung,dsim-config-pll-stable-time", 0);
dt->esc_clk = fdtdec_get_int(blob, node,
"samsung,dsim-config-esc-clk", 0);
dt->stop_holding_cnt = fdtdec_get_int(blob, node,
"samsung,dsim-config-stop-holding-cnt", 0);
dt->bta_timeout = fdtdec_get_int(blob, node,
"samsung,dsim-config-bta-timeout", 0);
dt->rx_timeout = fdtdec_get_int(blob, node,
"samsung,dsim-config-rx-timeout", 0);
lcd_dt->name = fdtdec_get_config_string(blob,
"samsung,dsim-device-name");
lcd_dt->id = fdtdec_get_int(blob, node,
"samsung,dsim-device-id", 0);
lcd_dt->bus_id = fdtdec_get_int(blob, node,
"samsung,dsim-device-bus_id", 0);
lcd_dt->reverse_panel = fdtdec_get_int(blob, node,
"samsung,dsim-device-reverse-panel", 0);
return 0;
}
void exynos_init_dsim_platform_data(vidinfo_t *vid)
{
static struct mipi_dsim_config dsim_config_dt;
static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
if (exynos_dsim_config_parse_dt(gd->fdt_blob, &dsim_config_dt,
&mipi_lcd_device_dt))
debug("Can't get proper dsim config.\n");
strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
dsim_platform_data_dt.dsim_config = &dsim_config_dt;
dsim_platform_data_dt.mipi_power = mipi_power;
dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
dsim_platform_data_dt.lcd_panel_info = (void *)vid;
mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
vid->dsim_platform_data_dt = &dsim_platform_data_dt;
}