// SPDX-License-Identifier: GPL-2.0-only
|
/*
|
* linux/drivers/video/omap2/dss/core.c
|
*
|
* Copyright (C) 2009 Nokia Corporation
|
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
|
*
|
* Some code and ideas taken from drivers/video/omap/ driver
|
* by Imre Deak.
|
*/
|
|
#define DSS_SUBSYS_NAME "CORE"
|
|
#include <linux/kernel.h>
|
#include <linux/module.h>
|
#include <linux/clk.h>
|
#include <linux/err.h>
|
#include <linux/platform_device.h>
|
#include <linux/seq_file.h>
|
#include <linux/debugfs.h>
|
#include <linux/io.h>
|
#include <linux/device.h>
|
#include <linux/regulator/consumer.h>
|
#include <linux/suspend.h>
|
#include <linux/slab.h>
|
|
#include <video/omapfb_dss.h>
|
|
#include "dss.h"
|
#include "dss_features.h"
|
|
static struct {
|
struct platform_device *pdev;
|
|
const char *default_display_name;
|
} core;
|
|
static char *def_disp_name;
|
module_param_named(def_disp, def_disp_name, charp, 0);
|
MODULE_PARM_DESC(def_disp, "default display name");
|
|
const char *omapdss_get_default_display_name(void)
|
{
|
return core.default_display_name;
|
}
|
EXPORT_SYMBOL(omapdss_get_default_display_name);
|
|
enum omapdss_version omapdss_get_version(void)
|
{
|
struct omap_dss_board_info *pdata = core.pdev->dev.platform_data;
|
return pdata->version;
|
}
|
EXPORT_SYMBOL(omapdss_get_version);
|
|
struct platform_device *dss_get_core_pdev(void)
|
{
|
return core.pdev;
|
}
|
|
int dss_dsi_enable_pads(int dsi_id, unsigned lane_mask)
|
{
|
struct omap_dss_board_info *board_data = core.pdev->dev.platform_data;
|
|
if (!board_data->dsi_enable_pads)
|
return -ENOENT;
|
|
return board_data->dsi_enable_pads(dsi_id, lane_mask);
|
}
|
|
void dss_dsi_disable_pads(int dsi_id, unsigned lane_mask)
|
{
|
struct omap_dss_board_info *board_data = core.pdev->dev.platform_data;
|
|
if (!board_data->dsi_disable_pads)
|
return;
|
|
return board_data->dsi_disable_pads(dsi_id, lane_mask);
|
}
|
|
int dss_set_min_bus_tput(struct device *dev, unsigned long tput)
|
{
|
struct omap_dss_board_info *pdata = core.pdev->dev.platform_data;
|
|
if (pdata->set_min_bus_tput)
|
return pdata->set_min_bus_tput(dev, tput);
|
else
|
return 0;
|
}
|
|
#if defined(CONFIG_FB_OMAP2_DSS_DEBUGFS)
|
static int dss_show(struct seq_file *s, void *unused)
|
{
|
void (*func)(struct seq_file *) = s->private;
|
func(s);
|
return 0;
|
}
|
|
DEFINE_SHOW_ATTRIBUTE(dss);
|
|
static struct dentry *dss_debugfs_dir;
|
|
static void dss_initialize_debugfs(void)
|
{
|
dss_debugfs_dir = debugfs_create_dir("omapdss", NULL);
|
|
debugfs_create_file("clk", S_IRUGO, dss_debugfs_dir,
|
&dss_debug_dump_clocks, &dss_fops);
|
}
|
|
static void dss_uninitialize_debugfs(void)
|
{
|
debugfs_remove_recursive(dss_debugfs_dir);
|
}
|
|
void dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *))
|
{
|
debugfs_create_file(name, S_IRUGO, dss_debugfs_dir, write, &dss_fops);
|
}
|
#else /* CONFIG_FB_OMAP2_DSS_DEBUGFS */
|
static inline void dss_initialize_debugfs(void)
|
{
|
}
|
static inline void dss_uninitialize_debugfs(void)
|
{
|
}
|
void dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *))
|
{
|
}
|
#endif /* CONFIG_FB_OMAP2_DSS_DEBUGFS */
|
|
/* PLATFORM DEVICE */
|
static int omap_dss_pm_notif(struct notifier_block *b, unsigned long v, void *d)
|
{
|
DSSDBG("pm notif %lu\n", v);
|
|
switch (v) {
|
case PM_SUSPEND_PREPARE:
|
case PM_HIBERNATION_PREPARE:
|
case PM_RESTORE_PREPARE:
|
DSSDBG("suspending displays\n");
|
return dss_suspend_all_devices();
|
|
case PM_POST_SUSPEND:
|
case PM_POST_HIBERNATION:
|
case PM_POST_RESTORE:
|
DSSDBG("resuming displays\n");
|
return dss_resume_all_devices();
|
|
default:
|
return 0;
|
}
|
}
|
|
static struct notifier_block omap_dss_pm_notif_block = {
|
.notifier_call = omap_dss_pm_notif,
|
};
|
|
static int __init omap_dss_probe(struct platform_device *pdev)
|
{
|
core.pdev = pdev;
|
|
dss_features_init(omapdss_get_version());
|
|
dss_initialize_debugfs();
|
|
if (def_disp_name)
|
core.default_display_name = def_disp_name;
|
|
register_pm_notifier(&omap_dss_pm_notif_block);
|
|
return 0;
|
}
|
|
static int omap_dss_remove(struct platform_device *pdev)
|
{
|
unregister_pm_notifier(&omap_dss_pm_notif_block);
|
|
dss_uninitialize_debugfs();
|
|
return 0;
|
}
|
|
static void omap_dss_shutdown(struct platform_device *pdev)
|
{
|
DSSDBG("shutdown\n");
|
dss_disable_all_devices();
|
}
|
|
static struct platform_driver omap_dss_driver = {
|
.remove = omap_dss_remove,
|
.shutdown = omap_dss_shutdown,
|
.driver = {
|
.name = "omapdss",
|
},
|
};
|
|
/* INIT */
|
static int (*dss_output_drv_reg_funcs[])(void) __initdata = {
|
dss_init_platform_driver,
|
dispc_init_platform_driver,
|
#ifdef CONFIG_FB_OMAP2_DSS_DSI
|
dsi_init_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_DPI
|
dpi_init_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_SDI
|
sdi_init_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_VENC
|
venc_init_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP4_DSS_HDMI
|
hdmi4_init_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP5_DSS_HDMI
|
hdmi5_init_platform_driver,
|
#endif
|
};
|
|
static void (*dss_output_drv_unreg_funcs[])(void) = {
|
#ifdef CONFIG_FB_OMAP5_DSS_HDMI
|
hdmi5_uninit_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP4_DSS_HDMI
|
hdmi4_uninit_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_VENC
|
venc_uninit_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_SDI
|
sdi_uninit_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_DPI
|
dpi_uninit_platform_driver,
|
#endif
|
#ifdef CONFIG_FB_OMAP2_DSS_DSI
|
dsi_uninit_platform_driver,
|
#endif
|
dispc_uninit_platform_driver,
|
dss_uninit_platform_driver,
|
};
|
|
static int __init omap_dss_init(void)
|
{
|
int r;
|
int i;
|
|
r = platform_driver_probe(&omap_dss_driver, omap_dss_probe);
|
if (r)
|
return r;
|
|
for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) {
|
r = dss_output_drv_reg_funcs[i]();
|
if (r)
|
goto err_reg;
|
}
|
|
return 0;
|
|
err_reg:
|
for (i = ARRAY_SIZE(dss_output_drv_reg_funcs) - i;
|
i < ARRAY_SIZE(dss_output_drv_reg_funcs);
|
++i)
|
dss_output_drv_unreg_funcs[i]();
|
|
platform_driver_unregister(&omap_dss_driver);
|
|
return r;
|
}
|
|
static void __exit omap_dss_exit(void)
|
{
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i)
|
dss_output_drv_unreg_funcs[i]();
|
|
platform_driver_unregister(&omap_dss_driver);
|
}
|
|
module_init(omap_dss_init);
|
module_exit(omap_dss_exit);
|
|
MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
|
MODULE_DESCRIPTION("OMAP2/3 Display Subsystem");
|
MODULE_LICENSE("GPL v2");
|
