diff options
Diffstat (limited to 'drivers/video/omap2/dss/core.c')
| -rw-r--r-- | drivers/video/omap2/dss/core.c | 664 |
1 files changed, 0 insertions, 664 deletions
diff --git a/drivers/video/omap2/dss/core.c b/drivers/video/omap2/dss/core.c deleted file mode 100644 index c9c2252e371..00000000000 --- a/drivers/video/omap2/dss/core.c +++ /dev/null @@ -1,664 +0,0 @@ -/* - * 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. - * - * 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. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#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/omapdss.h> - -#include "dss.h" -#include "dss_features.h" - -static struct { - struct platform_device *pdev; - - struct regulator *vdds_dsi_reg; - struct regulator *vdds_sdi_reg; - - 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"); - -static bool dss_initialized; - -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); - -bool omapdss_is_initialized(void) -{ - return dss_initialized; -} -EXPORT_SYMBOL(omapdss_is_initialized); - -struct platform_device *dss_get_core_pdev(void) -{ - return core.pdev; -} - -/* REGULATORS */ - -struct regulator *dss_get_vdds_dsi(void) -{ - struct regulator *reg; - - if (core.vdds_dsi_reg != NULL) - return core.vdds_dsi_reg; - - reg = regulator_get(&core.pdev->dev, "vdds_dsi"); - if (!IS_ERR(reg)) - core.vdds_dsi_reg = reg; - - return reg; -} - -struct regulator *dss_get_vdds_sdi(void) -{ - struct regulator *reg; - - if (core.vdds_sdi_reg != NULL) - return core.vdds_sdi_reg; - - reg = regulator_get(&core.pdev->dev, "vdds_sdi"); - if (!IS_ERR(reg)) - core.vdds_sdi_reg = reg; - - return reg; -} - -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_OMAP2_DSS_DEBUGFS) -static int dss_debug_show(struct seq_file *s, void *unused) -{ - void (*func)(struct seq_file *) = s->private; - func(s); - return 0; -} - -static int dss_debug_open(struct inode *inode, struct file *file) -{ - return single_open(file, dss_debug_show, inode->i_private); -} - -static const struct file_operations dss_debug_fops = { - .open = dss_debug_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static struct dentry *dss_debugfs_dir; - -static int dss_initialize_debugfs(void) -{ - dss_debugfs_dir = debugfs_create_dir("omapdss", NULL); - if (IS_ERR(dss_debugfs_dir)) { - int err = PTR_ERR(dss_debugfs_dir); - dss_debugfs_dir = NULL; - return err; - } - - debugfs_create_file("clk", S_IRUGO, dss_debugfs_dir, - &dss_debug_dump_clocks, &dss_debug_fops); - - return 0; -} - -static void dss_uninitialize_debugfs(void) -{ - if (dss_debugfs_dir) - debugfs_remove_recursive(dss_debugfs_dir); -} - -int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *)) -{ - struct dentry *d; - - d = debugfs_create_file(name, S_IRUGO, dss_debugfs_dir, - write, &dss_debug_fops); - - return PTR_RET(d); -} -#else /* CONFIG_OMAP2_DSS_DEBUGFS */ -static inline int dss_initialize_debugfs(void) -{ - return 0; -} -static inline void dss_uninitialize_debugfs(void) -{ -} -int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *)) -{ - return 0; -} -#endif /* CONFIG_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: - DSSDBG("suspending displays\n"); - return dss_suspend_all_devices(); - - case PM_POST_SUSPEND: - 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) -{ - struct omap_dss_board_info *pdata = pdev->dev.platform_data; - int r; - - core.pdev = pdev; - - dss_features_init(omapdss_get_version()); - - r = dss_initialize_debugfs(); - if (r) - goto err_debugfs; - - if (def_disp_name) - core.default_display_name = def_disp_name; - else if (pdata->default_device) - core.default_display_name = pdata->default_device->name; - - register_pm_notifier(&omap_dss_pm_notif_block); - - return 0; - -err_debugfs: - - return r; -} - -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", - .owner = THIS_MODULE, - }, -}; - -/* BUS */ -static int dss_bus_match(struct device *dev, struct device_driver *driver) -{ - struct omap_dss_device *dssdev = to_dss_device(dev); - - DSSDBG("bus_match. dev %s/%s, drv %s\n", - dev_name(dev), dssdev->driver_name, driver->name); - - return strcmp(dssdev->driver_name, driver->name) == 0; -} - -static ssize_t device_name_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct omap_dss_device *dssdev = to_dss_device(dev); - return snprintf(buf, PAGE_SIZE, "%s\n", - dssdev->name ? - dssdev->name : ""); -} - -static struct device_attribute default_dev_attrs[] = { - __ATTR(name, S_IRUGO, device_name_show, NULL), - __ATTR_NULL, -}; - -static ssize_t driver_name_show(struct device_driver *drv, char *buf) -{ - struct omap_dss_driver *dssdrv = to_dss_driver(drv); - return snprintf(buf, PAGE_SIZE, "%s\n", - dssdrv->driver.name ? - dssdrv->driver.name : ""); -} -static struct driver_attribute default_drv_attrs[] = { - __ATTR(name, S_IRUGO, driver_name_show, NULL), - __ATTR_NULL, -}; - -static struct bus_type dss_bus_type = { - .name = "omapdss", - .match = dss_bus_match, - .dev_attrs = default_dev_attrs, - .drv_attrs = default_drv_attrs, -}; - -static void dss_bus_release(struct device *dev) -{ - DSSDBG("bus_release\n"); -} - -static struct device dss_bus = { - .release = dss_bus_release, -}; - -struct bus_type *dss_get_bus(void) -{ - return &dss_bus_type; -} - -/* DRIVER */ -static int dss_driver_probe(struct device *dev) -{ - int r; - struct omap_dss_driver *dssdrv = to_dss_driver(dev->driver); - struct omap_dss_device *dssdev = to_dss_device(dev); - - DSSDBG("driver_probe: dev %s/%s, drv %s\n", - dev_name(dev), dssdev->driver_name, - dssdrv->driver.name); - - r = dssdrv->probe(dssdev); - - if (r) { - DSSERR("driver probe failed: %d\n", r); - return r; - } - - DSSDBG("probe done for device %s\n", dev_name(dev)); - - dssdev->driver = dssdrv; - - return 0; -} - -static int dss_driver_remove(struct device *dev) -{ - struct omap_dss_driver *dssdrv = to_dss_driver(dev->driver); - struct omap_dss_device *dssdev = to_dss_device(dev); - - DSSDBG("driver_remove: dev %s/%s\n", dev_name(dev), - dssdev->driver_name); - - dssdrv->remove(dssdev); - - dssdev->driver = NULL; - - return 0; -} - -int omap_dss_register_driver(struct omap_dss_driver *dssdriver) -{ - dssdriver->driver.bus = &dss_bus_type; - dssdriver->driver.probe = dss_driver_probe; - dssdriver->driver.remove = dss_driver_remove; - - if (dssdriver->get_resolution == NULL) - dssdriver->get_resolution = omapdss_default_get_resolution; - if (dssdriver->get_recommended_bpp == NULL) - dssdriver->get_recommended_bpp = - omapdss_default_get_recommended_bpp; - if (dssdriver->get_timings == NULL) - dssdriver->get_timings = omapdss_default_get_timings; - - return driver_register(&dssdriver->driver); -} -EXPORT_SYMBOL(omap_dss_register_driver); - -void omap_dss_unregister_driver(struct omap_dss_driver *dssdriver) -{ - driver_unregister(&dssdriver->driver); -} -EXPORT_SYMBOL(omap_dss_unregister_driver); - -/* DEVICE */ - -static void omap_dss_dev_release(struct device *dev) -{ - struct omap_dss_device *dssdev = to_dss_device(dev); - kfree(dssdev); -} - -static int disp_num_counter; - -struct omap_dss_device *dss_alloc_and_init_device(struct device *parent) -{ - struct omap_dss_device *dssdev; - - dssdev = kzalloc(sizeof(*dssdev), GFP_KERNEL); - if (!dssdev) - return NULL; - - dssdev->dev.bus = &dss_bus_type; - dssdev->dev.parent = parent; - dssdev->dev.release = omap_dss_dev_release; - dev_set_name(&dssdev->dev, "display%d", disp_num_counter++); - - device_initialize(&dssdev->dev); - - return dssdev; -} - -int dss_add_device(struct omap_dss_device *dssdev) -{ - return device_add(&dssdev->dev); -} - -void dss_put_device(struct omap_dss_device *dssdev) -{ - put_device(&dssdev->dev); -} - -void dss_unregister_device(struct omap_dss_device *dssdev) -{ - device_unregister(&dssdev->dev); -} - -static int dss_unregister_dss_dev(struct device *dev, void *data) -{ - struct omap_dss_device *dssdev = to_dss_device(dev); - dss_unregister_device(dssdev); - return 0; -} - -void dss_unregister_child_devices(struct device *parent) -{ - device_for_each_child(parent, NULL, dss_unregister_dss_dev); -} - -void dss_copy_device_pdata(struct omap_dss_device *dst, - const struct omap_dss_device *src) -{ - u8 *d = (u8 *)dst; - u8 *s = (u8 *)src; - size_t dsize = sizeof(struct device); - - memcpy(d + dsize, s + dsize, sizeof(struct omap_dss_device) - dsize); -} - -/* BUS */ -static int __init omap_dss_bus_register(void) -{ - int r; - - r = bus_register(&dss_bus_type); - if (r) { - DSSERR("bus register failed\n"); - return r; - } - - dev_set_name(&dss_bus, "omapdss"); - r = device_register(&dss_bus); - if (r) { - DSSERR("bus driver register failed\n"); - bus_unregister(&dss_bus_type); - return r; - } - - return 0; -} - -/* INIT */ -static int (*dss_output_drv_reg_funcs[])(void) __initdata = { -#ifdef CONFIG_OMAP2_DSS_DSI - dsi_init_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_DPI - dpi_init_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_SDI - sdi_init_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_RFBI - rfbi_init_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_VENC - venc_init_platform_driver, -#endif -#ifdef CONFIG_OMAP4_DSS_HDMI - hdmi_init_platform_driver, -#endif -}; - -static void (*dss_output_drv_unreg_funcs[])(void) __exitdata = { -#ifdef CONFIG_OMAP2_DSS_DSI - dsi_uninit_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_DPI - dpi_uninit_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_SDI - sdi_uninit_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_RFBI - rfbi_uninit_platform_driver, -#endif -#ifdef CONFIG_OMAP2_DSS_VENC - venc_uninit_platform_driver, -#endif -#ifdef CONFIG_OMAP4_DSS_HDMI - hdmi_uninit_platform_driver, -#endif -}; - -static bool dss_output_drv_loaded[ARRAY_SIZE(dss_output_drv_reg_funcs)]; - -static int __init omap_dss_register_drivers(void) -{ - int r; - int i; - - r = platform_driver_probe(&omap_dss_driver, omap_dss_probe); - if (r) - return r; - - r = dss_init_platform_driver(); - if (r) { - DSSERR("Failed to initialize DSS platform driver\n"); - goto err_dss; - } - - r = dispc_init_platform_driver(); - if (r) { - DSSERR("Failed to initialize dispc platform driver\n"); - goto err_dispc; - } - - /* - * It's ok if the output-driver register fails. It happens, for example, - * when there is no output-device (e.g. SDI for OMAP4). - */ - for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) { - r = dss_output_drv_reg_funcs[i](); - if (r == 0) - dss_output_drv_loaded[i] = true; - } - - return 0; - -err_dispc: - dss_uninit_platform_driver(); -err_dss: - platform_driver_unregister(&omap_dss_driver); - - return r; -} - -static void __exit omap_dss_unregister_drivers(void) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i) { - if (dss_output_drv_loaded[i]) - dss_output_drv_unreg_funcs[i](); - } - - dispc_uninit_platform_driver(); - dss_uninit_platform_driver(); - - platform_driver_unregister(&omap_dss_driver); -} - -#ifdef CONFIG_OMAP2_DSS_MODULE -static void omap_dss_bus_unregister(void) -{ - device_unregister(&dss_bus); - - bus_unregister(&dss_bus_type); -} - -static int __init omap_dss_init(void) -{ - int r; - - r = omap_dss_bus_register(); - if (r) - return r; - - r = omap_dss_register_drivers(); - if (r) { - omap_dss_bus_unregister(); - return r; - } - - dss_initialized = true; - - return 0; -} - -static void __exit omap_dss_exit(void) -{ - if (core.vdds_dsi_reg != NULL) { - regulator_put(core.vdds_dsi_reg); - core.vdds_dsi_reg = NULL; - } - - if (core.vdds_sdi_reg != NULL) { - regulator_put(core.vdds_sdi_reg); - core.vdds_sdi_reg = NULL; - } - - omap_dss_unregister_drivers(); - - omap_dss_bus_unregister(); -} - -module_init(omap_dss_init); -module_exit(omap_dss_exit); -#else -static int __init omap_dss_init(void) -{ - return omap_dss_bus_register(); -} - -static int __init omap_dss_init2(void) -{ - int r; - - r = omap_dss_register_drivers(); - if (r) - return r; - - dss_initialized = true; - - return 0; -} - -core_initcall(omap_dss_init); -device_initcall(omap_dss_init2); -#endif - -MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); -MODULE_DESCRIPTION("OMAP2/3 Display Subsystem"); -MODULE_LICENSE("GPL v2"); - |