drivers/video/fbdev/omap2/dss/dss.h - kernel/msm-4.9 - Gitiles

 /*
  * 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,
 };

 enum dss_pll_id {
 	DSS_PLL_DSI1,
 	DSS_PLL_DSI2,
 	DSS_PLL_HDMI,
 	DSS_PLL_VIDEO1,
 	DSS_PLL_VIDEO2,
 };

 struct dss_pll;

 #define DSS_PLL_MAX_HSDIVS 4

 /*
  * Type-A PLLs: clkout[]/mX[] refer to hsdiv outputs m4, m5, m6, m7.
  * Type-B PLLs: clkout[0] refers to m2.
  */
 struct dss_pll_clock_info {
 	/* rates that we get with dividers below */
 	unsigned long fint;
 	unsigned long clkdco;
 	unsigned long clkout[DSS_PLL_MAX_HSDIVS];

 	/* dividers */
 	u16 n;
 	u16 m;
 	u32 mf;
 	u16 mX[DSS_PLL_MAX_HSDIVS];
 	u16 sd;
 };

 struct dss_pll_ops {
 	int (*enable)(struct dss_pll *pll);
 	void (*disable)(struct dss_pll *pll);
 	int (*set_config)(struct dss_pll *pll,
 		const struct dss_pll_clock_info *cinfo);
 };

 struct dss_pll_hw {
 	unsigned n_max;
 	unsigned m_min;
 	unsigned m_max;
 	unsigned mX_max;

 	unsigned long fint_min, fint_max;
 	unsigned long clkdco_min, clkdco_low, clkdco_max;

 	u8 n_msb, n_lsb;
 	u8 m_msb, m_lsb;
 	u8 mX_msb[DSS_PLL_MAX_HSDIVS], mX_lsb[DSS_PLL_MAX_HSDIVS];

 	bool has_stopmode;
 	bool has_freqsel;
 	bool has_selfreqdco;
 	bool has_refsel;
 };

 struct dss_pll {
 	const char *name;
 	enum dss_pll_id id;

 	struct clk *clkin;
 	struct regulator *regulator;

 	void __iomem *base;

 	const struct dss_pll_hw *hw;

 	const struct dss_pll_ops *ops;

 	struct dss_pll_clock_info cinfo;
 };

 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 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);

 int dss_runtime_get(void);
 void dss_runtime_put(void);

 unsigned long dss_get_dispc_clk_rate(void);
 int dss_dpi_select_source(int port, 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);

 /* DSS VIDEO PLL */
 struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
 	struct regulator *regulator);
 void dss_video_pll_uninit(struct dss_pll *pll);

 /* dss-of */
 struct device_node *dss_of_port_get_parent_device(struct device_node *port);
 u32 dss_of_port_get_port_number(struct device_node *port);

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

 void dss_ctrl_pll_enable(enum dss_pll_id pll_id, bool enable);
 void dss_ctrl_pll_set_control_mux(enum dss_pll_id pll_id,
 	enum omap_channel channel);

 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);

 #ifdef CONFIG_OMAP2_DSS_SDI
 int sdi_init_port(struct platform_device *pdev, struct device_node *port);
 void sdi_uninit_port(struct device_node *port);
 #else
 static inline int sdi_init_port(struct platform_device *pdev,
 		struct device_node *port)
 {
 	return 0;
 }
 static inline void sdi_uninit_port(struct device_node *port)
 {
 }
 #endif

 /* DSI */

 #ifdef CONFIG_OMAP2_DSS_DSI

 struct dentry;
 struct file_operations;

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

 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);

 #else
 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;
 }
 #endif

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

 #ifdef CONFIG_OMAP2_DSS_DPI
 int dpi_init_port(struct platform_device *pdev, struct device_node *port);
 void dpi_uninit_port(struct device_node *port);
 #else
 static inline int dpi_init_port(struct platform_device *pdev,
 		struct device_node *port)
 {
 	return 0;
 }
 static inline void dpi_uninit_port(struct device_node *port)
 {
 }
 #endif

 /* DISPC */
 int dispc_init_platform_driver(void) __init;
 void dispc_uninit_platform_driver(void);
 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);

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

 int hdmi5_init_platform_driver(void) __init;
 void hdmi5_uninit_platform_driver(void);

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


 #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

 /* PLL */
 typedef bool (*dss_pll_calc_func)(int n, int m, unsigned long fint,
 		unsigned long clkdco, void *data);
 typedef bool (*dss_hsdiv_calc_func)(int m_dispc, unsigned long dispc,
 		void *data);

 int dss_pll_register(struct dss_pll *pll);
 void dss_pll_unregister(struct dss_pll *pll);
 struct dss_pll *dss_pll_find(const char *name);
 int dss_pll_enable(struct dss_pll *pll);
 void dss_pll_disable(struct dss_pll *pll);
 int dss_pll_set_config(struct dss_pll *pll,
 		const struct dss_pll_clock_info *cinfo);

 bool dss_pll_hsdiv_calc(const struct dss_pll *pll, unsigned long clkdco,
 		unsigned long out_min, unsigned long out_max,
 		dss_hsdiv_calc_func func, void *data);
 bool dss_pll_calc(const struct dss_pll *pll, unsigned long clkin,
 		unsigned long pll_min, unsigned long pll_max,
 		dss_pll_calc_func func, void *data);
 int dss_pll_write_config_type_a(struct dss_pll *pll,
 		const struct dss_pll_clock_info *cinfo);
 int dss_pll_write_config_type_b(struct dss_pll *pll,
 		const struct dss_pll_clock_info *cinfo);
 int dss_pll_wait_reset_done(struct dss_pll *pll);

 #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,
	};

	enum dss_pll_id {
	DSS_PLL_DSI1,
	DSS_PLL_DSI2,
	DSS_PLL_HDMI,
	DSS_PLL_VIDEO1,
	DSS_PLL_VIDEO2,
	};

	struct dss_pll;

	#define DSS_PLL_MAX_HSDIVS 4

	/*
	* Type-A PLLs: clkout[]/mX[] refer to hsdiv outputs m4, m5, m6, m7.
	* Type-B PLLs: clkout[0] refers to m2.
	*/
	struct dss_pll_clock_info {
	/* rates that we get with dividers below */
	unsigned long fint;
	unsigned long clkdco;
	unsigned long clkout[DSS_PLL_MAX_HSDIVS];

	/* dividers */
	u16 n;
	u16 m;
	u32 mf;
	u16 mX[DSS_PLL_MAX_HSDIVS];
	u16 sd;
	};

	struct dss_pll_ops {
	int (enable)(struct dss_pll pll);
	void (disable)(struct dss_pll pll);
	int (set_config)(struct dss_pll pll,
	const struct dss_pll_clock_info *cinfo);
	};

	struct dss_pll_hw {
	unsigned n_max;
	unsigned m_min;
	unsigned m_max;
	unsigned mX_max;

	unsigned long fint_min, fint_max;
	unsigned long clkdco_min, clkdco_low, clkdco_max;

	u8 n_msb, n_lsb;
	u8 m_msb, m_lsb;
	u8 mX_msb[DSS_PLL_MAX_HSDIVS], mX_lsb[DSS_PLL_MAX_HSDIVS];

	bool has_stopmode;
	bool has_freqsel;
	bool has_selfreqdco;
	bool has_refsel;
	};

	struct dss_pll {
	const char *name;
	enum dss_pll_id id;

	struct clk *clkin;
	struct regulator *regulator;

	void __iomem *base;

	const struct dss_pll_hw *hw;

	const struct dss_pll_ops *ops;

	struct dss_pll_clock_info cinfo;
	};

	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 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);

	int dss_runtime_get(void);
	void dss_runtime_put(void);

	unsigned long dss_get_dispc_clk_rate(void);
	int dss_dpi_select_source(int port, 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);

	/* DSS VIDEO PLL */
	struct dss_pll dss_video_pll_init(struct platform_device pdev, int id,
	struct regulator *regulator);
	void dss_video_pll_uninit(struct dss_pll *pll);

	/* dss-of */
	struct device_node dss_of_port_get_parent_device(struct device_node port);
	u32 dss_of_port_get_port_number(struct device_node *port);

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

	void dss_ctrl_pll_enable(enum dss_pll_id pll_id, bool enable);
	void dss_ctrl_pll_set_control_mux(enum dss_pll_id pll_id,
	enum omap_channel channel);

	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);

	#ifdef CONFIG_OMAP2_DSS_SDI
	int sdi_init_port(struct platform_device pdev, struct device_node port);
	void sdi_uninit_port(struct device_node *port);
	#else
	static inline int sdi_init_port(struct platform_device *pdev,
	struct device_node *port)
	{
	return 0;
	}
	static inline void sdi_uninit_port(struct device_node *port)
	{
	}
	#endif

	/* DSI */

	#ifdef CONFIG_OMAP2_DSS_DSI

	struct dentry;
	struct file_operations;

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

	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);

	#else
	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;
	}
	#endif

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

	#ifdef CONFIG_OMAP2_DSS_DPI
	int dpi_init_port(struct platform_device pdev, struct device_node port);
	void dpi_uninit_port(struct device_node *port);
	#else
	static inline int dpi_init_port(struct platform_device *pdev,
	struct device_node *port)
	{
	return 0;
	}
	static inline void dpi_uninit_port(struct device_node *port)
	{
	}
	#endif

	/* DISPC */
	int dispc_init_platform_driver(void) __init;
	void dispc_uninit_platform_driver(void);
	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);

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

	int hdmi5_init_platform_driver(void) __init;
	void hdmi5_uninit_platform_driver(void);

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


	#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

	/* PLL */
	typedef bool (*dss_pll_calc_func)(int n, int m, unsigned long fint,
	unsigned long clkdco, void *data);
	typedef bool (*dss_hsdiv_calc_func)(int m_dispc, unsigned long dispc,
	void *data);

	int dss_pll_register(struct dss_pll *pll);
	void dss_pll_unregister(struct dss_pll *pll);
	struct dss_pll dss_pll_find(const char name);
	int dss_pll_enable(struct dss_pll *pll);
	void dss_pll_disable(struct dss_pll *pll);
	int dss_pll_set_config(struct dss_pll *pll,
	const struct dss_pll_clock_info *cinfo);

	bool dss_pll_hsdiv_calc(const struct dss_pll *pll, unsigned long clkdco,
	unsigned long out_min, unsigned long out_max,
	dss_hsdiv_calc_func func, void *data);
	bool dss_pll_calc(const struct dss_pll *pll, unsigned long clkin,
	unsigned long pll_min, unsigned long pll_max,
	dss_pll_calc_func func, void *data);
	int dss_pll_write_config_type_a(struct dss_pll *pll,
	const struct dss_pll_clock_info *cinfo);
	int dss_pll_write_config_type_b(struct dss_pll *pll,
	const struct dss_pll_clock_info *cinfo);
	int dss_pll_wait_reset_done(struct dss_pll *pll);

	#endif