Release 4.17 drivers/gpu/drm/omapdrm/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>
#include "omapdss.h"
struct dispc_device;
struct dss_debugfs_entry;
struct platform_device;
struct seq_file;
#define MAX_DSS_LCD_MANAGERS 3
#define MAX_NUM_DSI 2
#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, ...) \
pr_err("omapdss " DSS_SUBSYS_NAME " error: " format, ##__VA_ARGS__)
#else
#define DSSERR(format, ...) \
pr_err("omapdss error: " format, ##__VA_ARGS__)
#endif
#ifdef DSS_SUBSYS_NAME
#define DSSINFO(format, ...) \
pr_info("omapdss " DSS_SUBSYS_NAME ": " format, ##__VA_ARGS__)
#else
#define DSSINFO(format, ...) \
pr_info("omapdss: " format, ## __VA_ARGS__)
#endif
#ifdef DSS_SUBSYS_NAME
#define DSSWARN(format, ...) \
pr_warn("omapdss " DSS_SUBSYS_NAME ": " format, ##__VA_ARGS__)
#else
#define DSSWARN(format, ...) \
pr_warn("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_model {
DSS_MODEL_OMAP2,
DSS_MODEL_OMAP3,
DSS_MODEL_OMAP4,
DSS_MODEL_OMAP5,
DSS_MODEL_DRA7,
};
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_clk_source {
DSS_CLK_SRC_FCK = 0,
DSS_CLK_SRC_PLL1_1,
DSS_CLK_SRC_PLL1_2,
DSS_CLK_SRC_PLL1_3,
DSS_CLK_SRC_PLL2_1,
DSS_CLK_SRC_PLL2_2,
DSS_CLK_SRC_PLL2_3,
DSS_CLK_SRC_HDMI_PLL,
};
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
enum dss_pll_type {
DSS_PLL_TYPE_A,
DSS_PLL_TYPE_B,
};
/*
* 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 {
enum dss_pll_type type;
unsigned int n_max;
unsigned int m_min;
unsigned int m_max;
unsigned int 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;
/* DRA7 errata i886: use high N & M to avoid jitter */
bool errata_i886;
};
struct dss_pll {
const char *name;
enum dss_pll_id id;
struct dss_device *dss;
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;
};
/* Defines a generic omap register field */
struct dss_reg_field {
u8 start, end;
};
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;
};
#define DSS_SZ_REGS SZ_512
struct dss_device {
struct platform_device *pdev;
void __iomem *base;
struct regmap *syscon_pll_ctrl;
u32 syscon_pll_ctrl_offset;
struct clk *parent_clk;
struct clk *dss_clk;
unsigned long dss_clk_rate;
unsigned long cache_req_pck;
unsigned long cache_prate;
struct dispc_clock_info cache_dispc_cinfo;
enum dss_clk_source dsi_clk_source[MAX_NUM_DSI];
enum dss_clk_source dispc_clk_source;
enum dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS];
bool ctx_valid;
u32 ctx[DSS_SZ_REGS / sizeof(u32)];
const struct dss_features *feat;
struct {
struct dentry *root;
struct dss_debugfs_entry *clk;
struct dss_debugfs_entry *dss;
} debugfs;
struct dss_pll *plls[4];
struct dss_pll *video1_pll;
struct dss_pll *video2_pll;
struct dispc_device *dispc;
const struct dispc_ops *dispc_ops;
};
/* core */
static inline int dss_set_min_bus_tput(struct device *dev, unsigned long tput)
{
/* To be implemented when the OMAP platform will provide this feature */
return 0;
}
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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;
}
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/* DSS */
#if defined(CONFIG_OMAP2_DSS_DEBUGFS)
struct dss_debugfs_entry *
dss_debugfs_create_file(struct dss_device *dss, const char *name,
int (*show_fn)(struct seq_file *s, void *data),
void *data);
void dss_debugfs_remove_file(struct dss_debugfs_entry *entry);
#else
static inline struct dss_debugfs_entry *
dss_debugfs_create_file(struct dss_device *dss, const char *name,
int (*show_fn)(struct seq_file *s, void *data),
void *data)
{
return NULL;
}
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static inline void dss_debugfs_remove_file(struct dss_debugfs_entry *entry)
{
}
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#endif /* CONFIG_OMAP2_DSS_DEBUGFS */
struct dss_device *dss_get_device(struct device *dev);
int dss_runtime_get(struct dss_device *dss);
void dss_runtime_put(struct dss_device *dss);
unsigned long dss_get_dispc_clk_rate(struct dss_device *dss);
unsigned long dss_get_max_fck_rate(struct dss_device *dss);
enum omap_dss_output_id dss_get_supported_outputs(struct dss_device *dss,
enum omap_channel channel);
int dss_dpi_select_source(struct dss_device *dss, int port,
enum omap_channel channel);
void dss_select_hdmi_venc_clk_source(struct dss_device *dss,
enum dss_hdmi_venc_clk_source_select src);
const char *dss_get_clk_source_name(enum dss_clk_source clk_src);
/* DSS VIDEO PLL */
struct dss_pll *dss_video_pll_init(struct dss_device *dss,
struct platform_device *pdev, int id,
struct regulator *regulator);
void dss_video_pll_uninit(struct dss_pll *pll);
void dss_ctrl_pll_enable(struct dss_pll *pll, bool enable);
void dss_sdi_init(struct dss_device *dss, int datapairs);
int dss_sdi_enable(struct dss_device *dss);
void dss_sdi_disable(struct dss_device *dss);
void dss_select_dsi_clk_source(struct dss_device *dss, int dsi_module,
enum dss_clk_source clk_src);
void dss_select_lcd_clk_source(struct dss_device *dss,
enum omap_channel channel,
enum dss_clk_source clk_src);
enum dss_clk_source dss_get_dispc_clk_source(struct dss_device *dss);
enum dss_clk_source dss_get_dsi_clk_source(struct dss_device *dss,
int dsi_module);
enum dss_clk_source dss_get_lcd_clk_source(struct dss_device *dss,
enum omap_channel channel);
void dss_set_venc_output(struct dss_device *dss, enum omap_dss_venc_type type);
void dss_set_dac_pwrdn_bgz(struct dss_device *dss, bool enable);
int dss_set_fck_rate(struct dss_device *dss, unsigned long rate);
typedef bool (*dss_div_calc_func)(unsigned long fck, void *data);
bool dss_div_calc(struct dss_device *dss, unsigned long pck,
unsigned long fck_min, dss_div_calc_func func, void *data);
/* SDI */
#ifdef CONFIG_OMAP2_DSS_SDI
int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
struct device_node *port);
void sdi_uninit_port(struct device_node *port);
#else
static inline int sdi_init_port(struct dss_device *dss,
struct platform_device *pdev,
struct device_node *port)
{
return 0;
}
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static inline void sdi_uninit_port(struct device_node *port)
{
}
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#endif
/* DSI */
#ifdef CONFIG_OMAP2_DSS_DSI
void dsi_dump_clocks(struct seq_file *s);
void dsi_irq_handler(void);
#endif
/* DPI */
#ifdef CONFIG_OMAP2_DSS_DPI
int dpi_init_port(struct dss_device *dss, struct platform_device *pdev,
struct device_node *port, enum dss_model dss_model);
void dpi_uninit_port(struct device_node *port);
#else
static inline int dpi_init_port(struct dss_device *dss,
struct platform_device *pdev,
struct device_node *port,
enum dss_model dss_model)
{
return 0;
}
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static inline void dpi_uninit_port(struct device_node *port)
{
}
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#endif
/* DISPC */
void dispc_dump_clocks(struct dispc_device *dispc, struct seq_file *s);
int dispc_runtime_get(struct dispc_device *dispc);
void dispc_runtime_put(struct dispc_device *dispc);
void dispc_enable_sidle(struct dispc_device *dispc);
void dispc_disable_sidle(struct dispc_device *dispc);
void dispc_lcd_enable_signal(struct dispc_device *dispc, bool enable);
void dispc_pck_free_enable(struct dispc_device *dispc, bool enable);
void dispc_enable_fifomerge(struct dispc_device *dispc, bool enable);
typedef bool (*dispc_div_calc_func)(int lckd, int pckd, unsigned long lck,
unsigned long pck, void *data);
bool dispc_div_calc(struct dispc_device *dispc, unsigned long dispc_freq,
unsigned long pck_min, unsigned long pck_max,
dispc_div_calc_func func, void *data);
bool dispc_mgr_timings_ok(struct dispc_device *dispc,
enum omap_channel channel,
const struct videomode *vm);
int dispc_calc_clock_rates(struct dispc_device *dispc,
unsigned long dispc_fclk_rate,
struct dispc_clock_info *cinfo);
void dispc_ovl_set_fifo_threshold(struct dispc_device *dispc,
enum omap_plane_id plane, u32 low, u32 high);
void dispc_ovl_compute_fifo_thresholds(struct dispc_device *dispc,
enum omap_plane_id plane,
u32 *fifo_low, u32 *fifo_high,
bool use_fifomerge, bool manual_update);
void dispc_mgr_set_clock_div(struct dispc_device *dispc,
enum omap_channel channel,
const struct dispc_clock_info *cinfo);
int dispc_mgr_get_clock_div(struct dispc_device *dispc,
enum omap_channel channel,
struct dispc_clock_info *cinfo);
void dispc_set_tv_pclk(struct dispc_device *dispc, unsigned long pclk);
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
static inline void dss_collect_irq_stats(u32 irqstatus, unsigned int *irq_arr)
{
int b;
for (b = 0; b < 32; ++b) {
if (irqstatus & (1 << b))
irq_arr[b]++;
}
}
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#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_device *dss, struct dss_pll *pll);
void dss_pll_unregister(struct dss_pll *pll);
struct dss_pll *dss_pll_find(struct dss_device *dss, const char *name);
struct dss_pll *dss_pll_find_by_src(struct dss_device *dss,
enum dss_clk_source src);
unsigned int dss_pll_get_clkout_idx_for_src(enum dss_clk_source src);
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_a(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_a(const struct dss_pll *pll, unsigned long clkin,
unsigned long pll_min, unsigned long pll_max,
dss_pll_calc_func func, void *data);
bool dss_pll_calc_b(const struct dss_pll *pll, unsigned long clkin,
unsigned long target_clkout, struct dss_pll_clock_info *cinfo);
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);
extern struct platform_driver omap_dsshw_driver;
extern struct platform_driver omap_dispchw_driver;
#ifdef CONFIG_OMAP2_DSS_DSI
extern struct platform_driver omap_dsihw_driver;
#endif
#ifdef CONFIG_OMAP2_DSS_VENC
extern struct platform_driver omap_venchw_driver;
#endif
#ifdef CONFIG_OMAP4_DSS_HDMI
extern struct platform_driver omapdss_hdmi4hw_driver;
#endif
#ifdef CONFIG_OMAP5_DSS_HDMI
extern struct platform_driver omapdss_hdmi5hw_driver;
#endif
#endif
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