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![Donghwa Lee](/assets/img/avatar_default.png)
EXYNOS SoC platform has MIPI-DSI controller and MIPI-DSI based LCD Panel could be used with it. This patch supports MIPI-DSI driver based Samsung SoC chip. LCD panel driver based MIPI-DSI should be registered to MIPI-DSI driver at board file and LCD panel driver specific function registered to mipi_dsim_ddi structure at lcd panel init function called system init. In the MIPI-DSI driver, find lcd panel driver by using registered lcd panel name, and then initialize lcd panel driver. Signed-off-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Acked-by: Anatolij Gustschin <agust@denx.de>
254 lines
5.9 KiB
C
254 lines
5.9 KiB
C
/*
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* Copyright (C) 2012 Samsung Electronics
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*
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* Author: InKi Dae <inki.dae@samsung.com>
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* Author: Donghwa Lee <dh09.lee@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <linux/err.h>
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#include <asm/arch/dsim.h>
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#include <asm/arch/mipi_dsim.h>
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#include <asm/arch/power.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/clk.h>
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#include "exynos_mipi_dsi_lowlevel.h"
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#include "exynos_mipi_dsi_common.h"
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#define master_to_driver(a) (a->dsim_lcd_drv)
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#define master_to_device(a) (a->dsim_lcd_dev)
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static struct exynos_platform_mipi_dsim *dsim_pd;
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struct mipi_dsim_ddi {
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int bus_id;
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struct list_head list;
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struct mipi_dsim_lcd_device *dsim_lcd_dev;
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struct mipi_dsim_lcd_driver *dsim_lcd_drv;
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};
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static LIST_HEAD(dsim_ddi_list);
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static LIST_HEAD(dsim_lcd_dev_list);
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int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
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{
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struct mipi_dsim_ddi *dsim_ddi;
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if (!lcd_dev) {
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debug("mipi_dsim_lcd_device is NULL.\n");
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return -EFAULT;
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}
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if (!lcd_dev->name) {
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debug("dsim_lcd_device name is NULL.\n");
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return -EFAULT;
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}
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dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
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if (!dsim_ddi) {
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debug("failed to allocate dsim_ddi object.\n");
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return -EFAULT;
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}
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dsim_ddi->dsim_lcd_dev = lcd_dev;
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list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
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return 0;
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}
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struct mipi_dsim_ddi
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*exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv)
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{
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struct mipi_dsim_ddi *dsim_ddi;
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struct mipi_dsim_lcd_device *lcd_dev;
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list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
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lcd_dev = dsim_ddi->dsim_lcd_dev;
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if (!lcd_dev)
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continue;
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if (lcd_drv->id >= 0) {
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if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
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lcd_drv->id == lcd_dev->id) {
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/**
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* bus_id would be used to identify
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* connected bus.
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*/
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dsim_ddi->bus_id = lcd_dev->bus_id;
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return dsim_ddi;
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}
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} else {
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if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
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/**
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* bus_id would be used to identify
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* connected bus.
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*/
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dsim_ddi->bus_id = lcd_dev->bus_id;
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return dsim_ddi;
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}
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}
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kfree(dsim_ddi);
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list_del(&dsim_ddi_list);
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}
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return NULL;
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}
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int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
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{
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struct mipi_dsim_ddi *dsim_ddi;
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if (!lcd_drv) {
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debug("mipi_dsim_lcd_driver is NULL.\n");
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return -EFAULT;
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}
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if (!lcd_drv->name) {
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debug("dsim_lcd_driver name is NULL.\n");
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return -EFAULT;
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}
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dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
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if (!dsim_ddi) {
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debug("mipi_dsim_ddi object not found.\n");
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return -EFAULT;
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}
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dsim_ddi->dsim_lcd_drv = lcd_drv;
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debug("registered panel driver(%s) to mipi-dsi driver.\n",
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lcd_drv->name);
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return 0;
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}
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struct mipi_dsim_ddi
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*exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim,
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const char *name)
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{
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struct mipi_dsim_ddi *dsim_ddi;
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struct mipi_dsim_lcd_driver *lcd_drv;
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struct mipi_dsim_lcd_device *lcd_dev;
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list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
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lcd_drv = dsim_ddi->dsim_lcd_drv;
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lcd_dev = dsim_ddi->dsim_lcd_dev;
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if (!lcd_drv || !lcd_dev)
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continue;
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debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
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lcd_drv->id, lcd_dev->id);
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if ((strcmp(lcd_drv->name, name) == 0)) {
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lcd_dev->master = dsim;
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dsim->dsim_lcd_dev = lcd_dev;
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dsim->dsim_lcd_drv = lcd_drv;
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return dsim_ddi;
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}
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}
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return NULL;
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}
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/* define MIPI-DSI Master operations. */
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static struct mipi_dsim_master_ops master_ops = {
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.cmd_write = exynos_mipi_dsi_wr_data,
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.get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
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.clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
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};
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int exynos_mipi_dsi_init(void)
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{
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struct mipi_dsim_device *dsim;
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struct mipi_dsim_config *dsim_config;
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struct mipi_dsim_ddi *dsim_ddi;
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dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
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if (!dsim) {
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debug("failed to allocate dsim object.\n");
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return -EFAULT;
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}
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/* get mipi_dsim_config. */
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dsim_config = dsim_pd->dsim_config;
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if (dsim_config == NULL) {
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debug("failed to get dsim config data.\n");
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return -EFAULT;
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}
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dsim->pd = dsim_pd;
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dsim->dsim_config = dsim_config;
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dsim->master_ops = &master_ops;
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/* bind lcd ddi matched with panel name. */
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dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
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if (!dsim_ddi) {
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debug("mipi_dsim_ddi object not found.\n");
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return -ENOSYS;
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}
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if (dsim_pd->lcd_power)
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dsim_pd->lcd_power();
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if (dsim_pd->mipi_power)
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dsim_pd->mipi_power();
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/* phy_enable(unsigned int dev_index, unsigned int enable) */
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if (dsim_pd->phy_enable)
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dsim_pd->phy_enable(0, 1);
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set_mipi_clk();
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exynos_mipi_dsi_init_dsim(dsim);
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exynos_mipi_dsi_init_link(dsim);
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exynos_mipi_dsi_set_hs_enable(dsim);
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/* set display timing. */
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exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
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/* initialize mipi-dsi client(lcd panel). */
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if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
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dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
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dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
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}
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debug("mipi-dsi driver(%s mode) has been probed.\n",
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(dsim_config->e_interface == DSIM_COMMAND) ?
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"CPU" : "RGB");
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return 0;
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}
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void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
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{
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if (pd == NULL) {
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debug("pd is NULL\n");
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return;
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}
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dsim_pd = pd;
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}
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