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/*
* Copyright (C) 2012 Samsung Electronics
*
* Author: InKi Dae <inki.dae@samsung.com>
* Author: Donghwa Lee <dh09.lee@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.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)
static struct exynos_platform_mipi_dsim *dsim_pd;
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(void)
{
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;
}
void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
{
if (pd == NULL) {
debug("pd is NULL\n");
return;
}
dsim_pd = pd;
}
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