drivers/video/omap2/dss/dss.h - maze/linux - Git at Google

 /*
  * linux/drivers/video/omap2/dss/dss.h
  *
  * 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/>.
  */

 #ifndef __OMAP2_DSS_H
 #define __OMAP2_DSS_H

 #include <linux/interrupt.h>

 #ifdef pr_fmt
 #undef pr_fmt
 #endif

 #ifdef DSS_SUBSYS_NAME
 #define pr_fmt(fmt) DSS_SUBSYS_NAME ": " fmt
 #else
 #define pr_fmt(fmt) fmt
 #endif

 #define DSSDBG(format, ...) \
 	pr_debug(format, ## __VA_ARGS__)

 #ifdef DSS_SUBSYS_NAME
 #define DSSERR(format, ...) \
 	printk(KERN_ERR "omapdss " DSS_SUBSYS_NAME " error: " format, \
 	## __VA_ARGS__)
 #else
 #define DSSERR(format, ...) \
 	printk(KERN_ERR "omapdss error: " format, ## __VA_ARGS__)
 #endif

 #ifdef DSS_SUBSYS_NAME
 #define DSSINFO(format, ...) \
 	printk(KERN_INFO "omapdss " DSS_SUBSYS_NAME ": " format, \
 	## __VA_ARGS__)
 #else
 #define DSSINFO(format, ...) \
 	printk(KERN_INFO "omapdss: " format, ## __VA_ARGS__)
 #endif

 #ifdef DSS_SUBSYS_NAME
 #define DSSWARN(format, ...) \
 	printk(KERN_WARNING "omapdss " DSS_SUBSYS_NAME ": " format, \
 	## __VA_ARGS__)
 #else
 #define DSSWARN(format, ...) \
 	printk(KERN_WARNING "omapdss: " format, ## __VA_ARGS__)
 #endif

 /* OMAP TRM gives bitfields as start:end, where start is the higher bit
    number. For example 7:0 */
 #define FLD_MASK(start, end)	(((1 << ((start) - (end) + 1)) - 1) << (end))
 #define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
 #define FLD_GET(val, start, end) (((val) & FLD_MASK(start, end)) >> (end))
 #define FLD_MOD(orig, val, start, end) \
 	(((orig) & ~FLD_MASK(start, end)) | FLD_VAL(val, start, end))

 enum dss_io_pad_mode {
 	DSS_IO_PAD_MODE_RESET,
 	DSS_IO_PAD_MODE_RFBI,
 	DSS_IO_PAD_MODE_BYPASS,
 };

 enum dss_hdmi_venc_clk_source_select {
 	DSS_VENC_TV_CLK = 0,
 	DSS_HDMI_M_PCLK = 1,
 };

 enum dss_dsi_content_type {
 	DSS_DSI_CONTENT_DCS,
 	DSS_DSI_CONTENT_GENERIC,
 };

 enum dss_writeback_channel {
 	DSS_WB_LCD1_MGR =	0,
 	DSS_WB_LCD2_MGR =	1,
 	DSS_WB_TV_MGR =		2,
 	DSS_WB_OVL0 =		3,
 	DSS_WB_OVL1 =		4,
 	DSS_WB_OVL2 =		5,
 	DSS_WB_OVL3 =		6,
 	DSS_WB_LCD3_MGR =	7,
 };

 struct dispc_clock_info {
 	/* rates that we get with dividers below */
 	unsigned long lck;
 	unsigned long pck;

 	/* dividers */
 	u16 lck_div;
 	u16 pck_div;
 };

 struct dsi_clock_info {
 	/* rates that we get with dividers below */
 	unsigned long fint;
 	unsigned long clkin4ddr;
 	unsigned long clkin;
 	unsigned long dsi_pll_hsdiv_dispc_clk;	/* OMAP3: DSI1_PLL_CLK
 						 * OMAP4: PLLx_CLK1 */
 	unsigned long dsi_pll_hsdiv_dsi_clk;	/* OMAP3: DSI2_PLL_CLK
 						 * OMAP4: PLLx_CLK2 */
 	unsigned long lp_clk;

 	/* dividers */
 	u16 regn;
 	u16 regm;
 	u16 regm_dispc;	/* OMAP3: REGM3
 			 * OMAP4: REGM4 */
 	u16 regm_dsi;	/* OMAP3: REGM4
 			 * OMAP4: REGM5 */
 	u16 lp_clk_div;
 };

 struct reg_field {
 	u16 reg;
 	u8 high;
 	u8 low;
 };

 struct dss_lcd_mgr_config {
 	enum dss_io_pad_mode io_pad_mode;

 	bool stallmode;
 	bool fifohandcheck;

 	struct dispc_clock_info clock_info;

 	int video_port_width;

 	int lcden_sig_polarity;
 };

 struct seq_file;
 struct platform_device;

 /* core */
 struct platform_device *dss_get_core_pdev(void);
 int dss_dsi_enable_pads(int dsi_id, unsigned lane_mask);
 void dss_dsi_disable_pads(int dsi_id, unsigned lane_mask);
 int dss_set_min_bus_tput(struct device *dev, unsigned long tput);
 int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *));

 /* display */
 int dss_suspend_all_devices(void);
 int dss_resume_all_devices(void);
 void dss_disable_all_devices(void);

 int display_init_sysfs(struct platform_device *pdev);
 void display_uninit_sysfs(struct platform_device *pdev);

 /* manager */
 int dss_init_overlay_managers(void);
 void dss_uninit_overlay_managers(void);
 int dss_init_overlay_managers_sysfs(struct platform_device *pdev);
 void dss_uninit_overlay_managers_sysfs(struct platform_device *pdev);
 int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
 		const struct omap_overlay_manager_info *info);
 int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
 		const struct omap_video_timings *timings);
 int dss_mgr_check(struct omap_overlay_manager *mgr,
 		struct omap_overlay_manager_info *info,
 		const struct omap_video_timings *mgr_timings,
 		const struct dss_lcd_mgr_config *config,
 		struct omap_overlay_info **overlay_infos);

 static inline bool dss_mgr_is_lcd(enum omap_channel id)
 {
 	if (id == OMAP_DSS_CHANNEL_LCD || id == OMAP_DSS_CHANNEL_LCD2 ||
 			id == OMAP_DSS_CHANNEL_LCD3)
 		return true;
 	else
 		return false;
 }

 int dss_manager_kobj_init(struct omap_overlay_manager *mgr,
 		struct platform_device *pdev);
 void dss_manager_kobj_uninit(struct omap_overlay_manager *mgr);

 /* overlay */
 void dss_init_overlays(struct platform_device *pdev);
 void dss_uninit_overlays(struct platform_device *pdev);
 void dss_overlay_setup_dispc_manager(struct omap_overlay_manager *mgr);
 int dss_ovl_simple_check(struct omap_overlay *ovl,
 		const struct omap_overlay_info *info);
 int dss_ovl_check(struct omap_overlay *ovl, struct omap_overlay_info *info,
 		const struct omap_video_timings *mgr_timings);
 bool dss_ovl_use_replication(struct dss_lcd_mgr_config config,
 		enum omap_color_mode mode);
 int dss_overlay_kobj_init(struct omap_overlay *ovl,
 		struct platform_device *pdev);
 void dss_overlay_kobj_uninit(struct omap_overlay *ovl);

 /* DSS */
 int dss_init_platform_driver(void) __init;
 void dss_uninit_platform_driver(void);

 unsigned long dss_get_dispc_clk_rate(void);
 int dss_dpi_select_source(enum omap_channel channel);
 void dss_select_hdmi_venc_clk_source(enum dss_hdmi_venc_clk_source_select);
 enum dss_hdmi_venc_clk_source_select dss_get_hdmi_venc_clk_source(void);
 const char *dss_get_generic_clk_source_name(enum omap_dss_clk_source clk_src);
 void dss_dump_clocks(struct seq_file *s);

 #if defined(CONFIG_OMAP2_DSS_DEBUGFS)
 void dss_debug_dump_clocks(struct seq_file *s);
 #endif

 void dss_sdi_init(int datapairs);
 int dss_sdi_enable(void);
 void dss_sdi_disable(void);

 void dss_select_dsi_clk_source(int dsi_module,
 		enum omap_dss_clk_source clk_src);
 void dss_select_lcd_clk_source(enum omap_channel channel,
 		enum omap_dss_clk_source clk_src);
 enum omap_dss_clk_source dss_get_dispc_clk_source(void);
 enum omap_dss_clk_source dss_get_dsi_clk_source(int dsi_module);
 enum omap_dss_clk_source dss_get_lcd_clk_source(enum omap_channel channel);

 void dss_set_venc_output(enum omap_dss_venc_type type);
 void dss_set_dac_pwrdn_bgz(bool enable);

 int dss_set_fck_rate(unsigned long rate);

 typedef bool (*dss_div_calc_func)(unsigned long fck, void *data);
 bool dss_div_calc(unsigned long pck, unsigned long fck_min,
 		dss_div_calc_func func, void *data);

 /* SDI */
 int sdi_init_platform_driver(void) __init;
 void sdi_uninit_platform_driver(void) __exit;

 int sdi_init_port(struct platform_device *pdev, struct device_node *port) __init;
 void sdi_uninit_port(void) __exit;

 /* DSI */

 typedef bool (*dsi_pll_calc_func)(int regn, int regm, unsigned long fint,
 		unsigned long pll, void *data);
 typedef bool (*dsi_hsdiv_calc_func)(int regm_dispc, unsigned long dispc,
 		void *data);

 #ifdef CONFIG_OMAP2_DSS_DSI

 struct dentry;
 struct file_operations;

 int dsi_init_platform_driver(void) __init;
 void dsi_uninit_platform_driver(void) __exit;

 int dsi_runtime_get(struct platform_device *dsidev);
 void dsi_runtime_put(struct platform_device *dsidev);

 void dsi_dump_clocks(struct seq_file *s);

 void dsi_irq_handler(void);
 u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt);

 unsigned long dsi_get_pll_clkin(struct platform_device *dsidev);

 bool dsi_hsdiv_calc(struct platform_device *dsidev, unsigned long pll,
 		unsigned long out_min, dsi_hsdiv_calc_func func, void *data);
 bool dsi_pll_calc(struct platform_device *dsidev, unsigned long clkin,
 		unsigned long pll_min, unsigned long pll_max,
 		dsi_pll_calc_func func, void *data);

 unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev);
 int dsi_pll_set_clock_div(struct platform_device *dsidev,
 		struct dsi_clock_info *cinfo);
 int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk,
 		bool enable_hsdiv);
 void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes);
 void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev);
 void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev);
 struct platform_device *dsi_get_dsidev_from_id(int module);
 #else
 static inline int dsi_runtime_get(struct platform_device *dsidev)
 {
 	return 0;
 }
 static inline void dsi_runtime_put(struct platform_device *dsidev)
 {
 }
 static inline u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
 {
 	WARN("%s: DSI not compiled in, returning pixel_size as 0\n", __func__);
 	return 0;
 }
 static inline unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev)
 {
 	WARN("%s: DSI not compiled in, returning rate as 0\n", __func__);
 	return 0;
 }
 static inline int dsi_pll_set_clock_div(struct platform_device *dsidev,
 		struct dsi_clock_info *cinfo)
 {
 	WARN("%s: DSI not compiled in\n", __func__);
 	return -ENODEV;
 }
 static inline int dsi_pll_init(struct platform_device *dsidev,
 		bool enable_hsclk, bool enable_hsdiv)
 {
 	WARN("%s: DSI not compiled in\n", __func__);
 	return -ENODEV;
 }
 static inline void dsi_pll_uninit(struct platform_device *dsidev,
 		bool disconnect_lanes)
 {
 }
 static inline void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev)
 {
 }
 static inline void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev)
 {
 }
 static inline struct platform_device *dsi_get_dsidev_from_id(int module)
 {
 	return NULL;
 }

 static inline unsigned long dsi_get_pll_clkin(struct platform_device *dsidev)
 {
 	return 0;
 }

 static inline bool dsi_hsdiv_calc(struct platform_device *dsidev,
 		unsigned long pll, unsigned long out_min,
 		dsi_hsdiv_calc_func func, void *data)
 {
 	return false;
 }

 static inline bool dsi_pll_calc(struct platform_device *dsidev,
 		unsigned long clkin,
 		unsigned long pll_min, unsigned long pll_max,
 		dsi_pll_calc_func func, void *data)
 {
 	return false;
 }

 #endif

 /* DPI */
 int dpi_init_platform_driver(void) __init;
 void dpi_uninit_platform_driver(void) __exit;

 int dpi_init_port(struct platform_device *pdev, struct device_node *port) __init;
 void dpi_uninit_port(void) __exit;

 /* DISPC */
 int dispc_init_platform_driver(void) __init;
 void dispc_uninit_platform_driver(void) __exit;
 void dispc_dump_clocks(struct seq_file *s);

 void dispc_enable_sidle(void);
 void dispc_disable_sidle(void);

 void dispc_lcd_enable_signal(bool enable);
 void dispc_pck_free_enable(bool enable);
 void dispc_enable_fifomerge(bool enable);
 void dispc_enable_gamma_table(bool enable);
 void dispc_set_loadmode(enum omap_dss_load_mode mode);

 typedef bool (*dispc_div_calc_func)(int lckd, int pckd, unsigned long lck,
 		unsigned long pck, void *data);
 bool dispc_div_calc(unsigned long dispc,
 		unsigned long pck_min, unsigned long pck_max,
 		dispc_div_calc_func func, void *data);

 bool dispc_mgr_timings_ok(enum omap_channel channel,
 		const struct omap_video_timings *timings);
 unsigned long dispc_fclk_rate(void);
 int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
 		struct dispc_clock_info *cinfo);


 void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high);
 void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
 		u32 *fifo_low, u32 *fifo_high, bool use_fifomerge,
 		bool manual_update);

 unsigned long dispc_mgr_lclk_rate(enum omap_channel channel);
 unsigned long dispc_mgr_pclk_rate(enum omap_channel channel);
 unsigned long dispc_core_clk_rate(void);
 void dispc_mgr_set_clock_div(enum omap_channel channel,
 		const struct dispc_clock_info *cinfo);
 int dispc_mgr_get_clock_div(enum omap_channel channel,
 		struct dispc_clock_info *cinfo);
 void dispc_set_tv_pclk(unsigned long pclk);

 u32 dispc_wb_get_framedone_irq(void);
 bool dispc_wb_go_busy(void);
 void dispc_wb_go(void);
 void dispc_wb_enable(bool enable);
 bool dispc_wb_is_enabled(void);
 void dispc_wb_set_channel_in(enum dss_writeback_channel channel);
 int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
 		bool mem_to_mem, const struct omap_video_timings *timings);

 /* VENC */
 int venc_init_platform_driver(void) __init;
 void venc_uninit_platform_driver(void) __exit;

 /* HDMI */
 int hdmi4_init_platform_driver(void) __init;
 void hdmi4_uninit_platform_driver(void) __exit;

 /* RFBI */
 int rfbi_init_platform_driver(void) __init;
 void rfbi_uninit_platform_driver(void) __exit;


 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
 static inline void dss_collect_irq_stats(u32 irqstatus, unsigned *irq_arr)
 {
 	int b;
 	for (b = 0; b < 32; ++b) {
 		if (irqstatus & (1 << b))
 			irq_arr[b]++;
 	}
 }
 #endif

 #endif
	/*
	* linux/drivers/video/omap2/dss/dss.h
	*
	* 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/>.
	*/

	#ifndef __OMAP2_DSS_H
	#define __OMAP2_DSS_H

	#include <linux/interrupt.h>

	#ifdef pr_fmt
	#undef pr_fmt
	#endif

	#ifdef DSS_SUBSYS_NAME
	#define pr_fmt(fmt) DSS_SUBSYS_NAME ": " fmt
	#else
	#define pr_fmt(fmt) fmt
	#endif

	#define DSSDBG(format, ...) \
	pr_debug(format, ## __VA_ARGS__)

	#ifdef DSS_SUBSYS_NAME
	#define DSSERR(format, ...) \
	printk(KERN_ERR "omapdss " DSS_SUBSYS_NAME " error: " format, \
	## __VA_ARGS__)
	#else
	#define DSSERR(format, ...) \
	printk(KERN_ERR "omapdss error: " format, ## __VA_ARGS__)
	#endif

	#ifdef DSS_SUBSYS_NAME
	#define DSSINFO(format, ...) \
	printk(KERN_INFO "omapdss " DSS_SUBSYS_NAME ": " format, \
	## __VA_ARGS__)
	#else
	#define DSSINFO(format, ...) \
	printk(KERN_INFO "omapdss: " format, ## __VA_ARGS__)
	#endif

	#ifdef DSS_SUBSYS_NAME
	#define DSSWARN(format, ...) \
	printk(KERN_WARNING "omapdss " DSS_SUBSYS_NAME ": " format, \
	## __VA_ARGS__)
	#else
	#define DSSWARN(format, ...) \
	printk(KERN_WARNING "omapdss: " format, ## __VA_ARGS__)
	#endif

	/* OMAP TRM gives bitfields as start:end, where start is the higher bit
	number. For example 7:0 */
	#define FLD_MASK(start, end) (((1 << ((start) - (end) + 1)) - 1) << (end))
	#define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
	#define FLD_GET(val, start, end) (((val) & FLD_MASK(start, end)) >> (end))
	#define FLD_MOD(orig, val, start, end) \
	(((orig) & ~FLD_MASK(start, end)) \| FLD_VAL(val, start, end))

	enum dss_io_pad_mode {
	DSS_IO_PAD_MODE_RESET,
	DSS_IO_PAD_MODE_RFBI,
	DSS_IO_PAD_MODE_BYPASS,
	};

	enum dss_hdmi_venc_clk_source_select {
	DSS_VENC_TV_CLK = 0,
	DSS_HDMI_M_PCLK = 1,
	};

	enum dss_dsi_content_type {
	DSS_DSI_CONTENT_DCS,
	DSS_DSI_CONTENT_GENERIC,
	};

	enum dss_writeback_channel {
	DSS_WB_LCD1_MGR = 0,
	DSS_WB_LCD2_MGR = 1,
	DSS_WB_TV_MGR = 2,
	DSS_WB_OVL0 = 3,
	DSS_WB_OVL1 = 4,
	DSS_WB_OVL2 = 5,
	DSS_WB_OVL3 = 6,
	DSS_WB_LCD3_MGR = 7,
	};

	struct dispc_clock_info {
	/* rates that we get with dividers below */
	unsigned long lck;
	unsigned long pck;

	/* dividers */
	u16 lck_div;
	u16 pck_div;
	};

	struct dsi_clock_info {
	/* rates that we get with dividers below */
	unsigned long fint;
	unsigned long clkin4ddr;
	unsigned long clkin;
	unsigned long dsi_pll_hsdiv_dispc_clk; /* OMAP3: DSI1_PLL_CLK
	* OMAP4: PLLx_CLK1 */
	unsigned long dsi_pll_hsdiv_dsi_clk; /* OMAP3: DSI2_PLL_CLK
	* OMAP4: PLLx_CLK2 */
	unsigned long lp_clk;

	/* dividers */
	u16 regn;
	u16 regm;
	u16 regm_dispc; /* OMAP3: REGM3
	* OMAP4: REGM4 */
	u16 regm_dsi; /* OMAP3: REGM4
	* OMAP4: REGM5 */
	u16 lp_clk_div;
	};

	struct reg_field {
	u16 reg;
	u8 high;
	u8 low;
	};

	struct dss_lcd_mgr_config {
	enum dss_io_pad_mode io_pad_mode;

	bool stallmode;
	bool fifohandcheck;

	struct dispc_clock_info clock_info;

	int video_port_width;

	int lcden_sig_polarity;
	};

	struct seq_file;
	struct platform_device;

	/* core */
	struct platform_device *dss_get_core_pdev(void);
	int dss_dsi_enable_pads(int dsi_id, unsigned lane_mask);
	void dss_dsi_disable_pads(int dsi_id, unsigned lane_mask);
	int dss_set_min_bus_tput(struct device *dev, unsigned long tput);
	int dss_debugfs_create_file(const char name, void (write)(struct seq_file *));

	/* display */
	int dss_suspend_all_devices(void);
	int dss_resume_all_devices(void);
	void dss_disable_all_devices(void);

	int display_init_sysfs(struct platform_device *pdev);
	void display_uninit_sysfs(struct platform_device *pdev);

	/* manager */
	int dss_init_overlay_managers(void);
	void dss_uninit_overlay_managers(void);
	int dss_init_overlay_managers_sysfs(struct platform_device *pdev);
	void dss_uninit_overlay_managers_sysfs(struct platform_device *pdev);
	int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
	const struct omap_overlay_manager_info *info);
	int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
	const struct omap_video_timings *timings);
	int dss_mgr_check(struct omap_overlay_manager *mgr,
	struct omap_overlay_manager_info *info,
	const struct omap_video_timings *mgr_timings,
	const struct dss_lcd_mgr_config *config,
	struct omap_overlay_info **overlay_infos);

	static inline bool dss_mgr_is_lcd(enum omap_channel id)
	{
	if (id == OMAP_DSS_CHANNEL_LCD \|\| id == OMAP_DSS_CHANNEL_LCD2 \|\|
	id == OMAP_DSS_CHANNEL_LCD3)
	return true;
	else
	return false;
	}

	int dss_manager_kobj_init(struct omap_overlay_manager *mgr,
	struct platform_device *pdev);
	void dss_manager_kobj_uninit(struct omap_overlay_manager *mgr);

	/* overlay */
	void dss_init_overlays(struct platform_device *pdev);
	void dss_uninit_overlays(struct platform_device *pdev);
	void dss_overlay_setup_dispc_manager(struct omap_overlay_manager *mgr);
	int dss_ovl_simple_check(struct omap_overlay *ovl,
	const struct omap_overlay_info *info);
	int dss_ovl_check(struct omap_overlay ovl, struct omap_overlay_info info,
	const struct omap_video_timings *mgr_timings);
	bool dss_ovl_use_replication(struct dss_lcd_mgr_config config,
	enum omap_color_mode mode);
	int dss_overlay_kobj_init(struct omap_overlay *ovl,
	struct platform_device *pdev);
	void dss_overlay_kobj_uninit(struct omap_overlay *ovl);

	/* DSS */
	int dss_init_platform_driver(void) __init;
	void dss_uninit_platform_driver(void);

	unsigned long dss_get_dispc_clk_rate(void);
	int dss_dpi_select_source(enum omap_channel channel);
	void dss_select_hdmi_venc_clk_source(enum dss_hdmi_venc_clk_source_select);
	enum dss_hdmi_venc_clk_source_select dss_get_hdmi_venc_clk_source(void);
	const char *dss_get_generic_clk_source_name(enum omap_dss_clk_source clk_src);
	void dss_dump_clocks(struct seq_file *s);

	#if defined(CONFIG_OMAP2_DSS_DEBUGFS)
	void dss_debug_dump_clocks(struct seq_file *s);
	#endif

	void dss_sdi_init(int datapairs);
	int dss_sdi_enable(void);
	void dss_sdi_disable(void);

	void dss_select_dsi_clk_source(int dsi_module,
	enum omap_dss_clk_source clk_src);
	void dss_select_lcd_clk_source(enum omap_channel channel,
	enum omap_dss_clk_source clk_src);
	enum omap_dss_clk_source dss_get_dispc_clk_source(void);
	enum omap_dss_clk_source dss_get_dsi_clk_source(int dsi_module);
	enum omap_dss_clk_source dss_get_lcd_clk_source(enum omap_channel channel);

	void dss_set_venc_output(enum omap_dss_venc_type type);
	void dss_set_dac_pwrdn_bgz(bool enable);

	int dss_set_fck_rate(unsigned long rate);

	typedef bool (dss_div_calc_func)(unsigned long fck, void data);
	bool dss_div_calc(unsigned long pck, unsigned long fck_min,
	dss_div_calc_func func, void *data);

	/* SDI */
	int sdi_init_platform_driver(void) __init;
	void sdi_uninit_platform_driver(void) __exit;

	int sdi_init_port(struct platform_device pdev, struct device_node port) __init;
	void sdi_uninit_port(void) __exit;

	/* DSI */

	typedef bool (*dsi_pll_calc_func)(int regn, int regm, unsigned long fint,
	unsigned long pll, void *data);
	typedef bool (*dsi_hsdiv_calc_func)(int regm_dispc, unsigned long dispc,
	void *data);

	#ifdef CONFIG_OMAP2_DSS_DSI

	struct dentry;
	struct file_operations;

	int dsi_init_platform_driver(void) __init;
	void dsi_uninit_platform_driver(void) __exit;

	int dsi_runtime_get(struct platform_device *dsidev);
	void dsi_runtime_put(struct platform_device *dsidev);

	void dsi_dump_clocks(struct seq_file *s);

	void dsi_irq_handler(void);
	u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt);

	unsigned long dsi_get_pll_clkin(struct platform_device *dsidev);

	bool dsi_hsdiv_calc(struct platform_device *dsidev, unsigned long pll,
	unsigned long out_min, dsi_hsdiv_calc_func func, void *data);
	bool dsi_pll_calc(struct platform_device *dsidev, unsigned long clkin,
	unsigned long pll_min, unsigned long pll_max,
	dsi_pll_calc_func func, void *data);

	unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev);
	int dsi_pll_set_clock_div(struct platform_device *dsidev,
	struct dsi_clock_info *cinfo);
	int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk,
	bool enable_hsdiv);
	void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes);
	void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev);
	void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev);
	struct platform_device *dsi_get_dsidev_from_id(int module);
	#else
	static inline int dsi_runtime_get(struct platform_device *dsidev)
	{
	return 0;
	}
	static inline void dsi_runtime_put(struct platform_device *dsidev)
	{
	}
	static inline u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
	{
	WARN("%s: DSI not compiled in, returning pixel_size as 0\n", __func__);
	return 0;
	}
	static inline unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev)
	{
	WARN("%s: DSI not compiled in, returning rate as 0\n", __func__);
	return 0;
	}
	static inline int dsi_pll_set_clock_div(struct platform_device *dsidev,
	struct dsi_clock_info *cinfo)
	{
	WARN("%s: DSI not compiled in\n", __func__);
	return -ENODEV;
	}
	static inline int dsi_pll_init(struct platform_device *dsidev,
	bool enable_hsclk, bool enable_hsdiv)
	{
	WARN("%s: DSI not compiled in\n", __func__);
	return -ENODEV;
	}
	static inline void dsi_pll_uninit(struct platform_device *dsidev,
	bool disconnect_lanes)
	{
	}
	static inline void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev)
	{
	}
	static inline void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev)
	{
	}
	static inline struct platform_device *dsi_get_dsidev_from_id(int module)
	{
	return NULL;
	}

	static inline unsigned long dsi_get_pll_clkin(struct platform_device *dsidev)
	{
	return 0;
	}

	static inline bool dsi_hsdiv_calc(struct platform_device *dsidev,
	unsigned long pll, unsigned long out_min,
	dsi_hsdiv_calc_func func, void *data)
	{
	return false;
	}

	static inline bool dsi_pll_calc(struct platform_device *dsidev,
	unsigned long clkin,
	unsigned long pll_min, unsigned long pll_max,
	dsi_pll_calc_func func, void *data)
	{
	return false;
	}

	#endif

	/* DPI */
	int dpi_init_platform_driver(void) __init;
	void dpi_uninit_platform_driver(void) __exit;

	int dpi_init_port(struct platform_device pdev, struct device_node port) __init;
	void dpi_uninit_port(void) __exit;

	/* DISPC */
	int dispc_init_platform_driver(void) __init;
	void dispc_uninit_platform_driver(void) __exit;
	void dispc_dump_clocks(struct seq_file *s);

	void dispc_enable_sidle(void);
	void dispc_disable_sidle(void);

	void dispc_lcd_enable_signal(bool enable);
	void dispc_pck_free_enable(bool enable);
	void dispc_enable_fifomerge(bool enable);
	void dispc_enable_gamma_table(bool enable);
	void dispc_set_loadmode(enum omap_dss_load_mode mode);

	typedef bool (*dispc_div_calc_func)(int lckd, int pckd, unsigned long lck,
	unsigned long pck, void *data);
	bool dispc_div_calc(unsigned long dispc,
	unsigned long pck_min, unsigned long pck_max,
	dispc_div_calc_func func, void *data);

	bool dispc_mgr_timings_ok(enum omap_channel channel,
	const struct omap_video_timings *timings);
	unsigned long dispc_fclk_rate(void);
	int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
	struct dispc_clock_info *cinfo);


	void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high);
	void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
	u32 fifo_low, u32 fifo_high, bool use_fifomerge,
	bool manual_update);

	unsigned long dispc_mgr_lclk_rate(enum omap_channel channel);
	unsigned long dispc_mgr_pclk_rate(enum omap_channel channel);
	unsigned long dispc_core_clk_rate(void);
	void dispc_mgr_set_clock_div(enum omap_channel channel,
	const struct dispc_clock_info *cinfo);
	int dispc_mgr_get_clock_div(enum omap_channel channel,
	struct dispc_clock_info *cinfo);
	void dispc_set_tv_pclk(unsigned long pclk);

	u32 dispc_wb_get_framedone_irq(void);
	bool dispc_wb_go_busy(void);
	void dispc_wb_go(void);
	void dispc_wb_enable(bool enable);
	bool dispc_wb_is_enabled(void);
	void dispc_wb_set_channel_in(enum dss_writeback_channel channel);
	int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
	bool mem_to_mem, const struct omap_video_timings *timings);

	/* VENC */
	int venc_init_platform_driver(void) __init;
	void venc_uninit_platform_driver(void) __exit;

	/* HDMI */
	int hdmi4_init_platform_driver(void) __init;
	void hdmi4_uninit_platform_driver(void) __exit;

	/* RFBI */
	int rfbi_init_platform_driver(void) __init;
	void rfbi_uninit_platform_driver(void) __exit;


	#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
	static inline void dss_collect_irq_stats(u32 irqstatus, unsigned *irq_arr)
	{
	int b;
	for (b = 0; b < 32; ++b) {
	if (irqstatus & (1 << b))
	irq_arr[b]++;
	}
	}
	#endif

	#endif