1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2009 Nokia Corporation
6 * Some code and ideas taken from drivers/video/omap/ driver
13 #include <linux/interrupt.h>
18 struct dss_debugfs_entry;
19 struct platform_device;
22 #define MAX_DSS_LCD_MANAGERS 3
29 #ifdef DSS_SUBSYS_NAME
30 #define pr_fmt(fmt) DSS_SUBSYS_NAME ": " fmt
32 #define pr_fmt(fmt) fmt
35 #define DSSDBG(format, ...) \
36 pr_debug(format, ## __VA_ARGS__)
38 #ifdef DSS_SUBSYS_NAME
39 #define DSSERR(format, ...) \
40 pr_err("omapdss " DSS_SUBSYS_NAME " error: " format, ##__VA_ARGS__)
42 #define DSSERR(format, ...) \
43 pr_err("omapdss error: " format, ##__VA_ARGS__)
46 #ifdef DSS_SUBSYS_NAME
47 #define DSSINFO(format, ...) \
48 pr_info("omapdss " DSS_SUBSYS_NAME ": " format, ##__VA_ARGS__)
50 #define DSSINFO(format, ...) \
51 pr_info("omapdss: " format, ## __VA_ARGS__)
54 #ifdef DSS_SUBSYS_NAME
55 #define DSSWARN(format, ...) \
56 pr_warn("omapdss " DSS_SUBSYS_NAME ": " format, ##__VA_ARGS__)
58 #define DSSWARN(format, ...) \
59 pr_warn("omapdss: " format, ##__VA_ARGS__)
62 /* OMAP TRM gives bitfields as start:end, where start is the higher bit
63 number. For example 7:0 */
64 #define FLD_MASK(start, end) (((1 << ((start) - (end) + 1)) - 1) << (end))
65 #define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
66 #define FLD_GET(val, start, end) (((val) & FLD_MASK(start, end)) >> (end))
67 #define FLD_MOD(orig, val, start, end) \
68 (((orig) & ~FLD_MASK(start, end)) | FLD_VAL(val, start, end))
78 enum dss_io_pad_mode {
79 DSS_IO_PAD_MODE_RESET,
81 DSS_IO_PAD_MODE_BYPASS,
84 enum dss_hdmi_venc_clk_source_select {
89 enum dss_dsi_content_type {
91 DSS_DSI_CONTENT_GENERIC,
105 DSS_CLK_SRC_HDMI_PLL,
118 #define DSS_PLL_MAX_HSDIVS 4
126 * Type-A PLLs: clkout[]/mX[] refer to hsdiv outputs m4, m5, m6, m7.
127 * Type-B PLLs: clkout[0] refers to m2.
129 struct dss_pll_clock_info {
130 /* rates that we get with dividers below */
132 unsigned long clkdco;
133 unsigned long clkout[DSS_PLL_MAX_HSDIVS];
139 u16 mX[DSS_PLL_MAX_HSDIVS];
144 int (*enable)(struct dss_pll *pll);
145 void (*disable)(struct dss_pll *pll);
146 int (*set_config)(struct dss_pll *pll,
147 const struct dss_pll_clock_info *cinfo);
151 enum dss_pll_type type;
158 unsigned long fint_min, fint_max;
159 unsigned long clkdco_min, clkdco_low, clkdco_max;
163 u8 mX_msb[DSS_PLL_MAX_HSDIVS], mX_lsb[DSS_PLL_MAX_HSDIVS];
170 /* DRA7 errata i886: use high N & M to avoid jitter */
173 /* DRA7 errata i932: retry pll lock on failure */
180 struct dss_device *dss;
183 struct regulator *regulator;
187 const struct dss_pll_hw *hw;
189 const struct dss_pll_ops *ops;
191 struct dss_pll_clock_info cinfo;
194 /* Defines a generic omap register field */
195 struct dss_reg_field {
199 struct dispc_clock_info {
200 /* rates that we get with dividers below */
209 struct dss_lcd_mgr_config {
210 enum dss_io_pad_mode io_pad_mode;
215 struct dispc_clock_info clock_info;
217 int video_port_width;
219 int lcden_sig_polarity;
222 #define DSS_SZ_REGS SZ_512
225 struct platform_device *pdev;
227 struct regmap *syscon_pll_ctrl;
228 u32 syscon_pll_ctrl_offset;
230 struct platform_device *drm_pdev;
232 struct clk *parent_clk;
234 unsigned long dss_clk_rate;
236 unsigned long cache_req_pck;
237 unsigned long cache_prate;
238 struct dispc_clock_info cache_dispc_cinfo;
240 enum dss_clk_source dsi_clk_source[MAX_NUM_DSI];
241 enum dss_clk_source dispc_clk_source;
242 enum dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS];
245 u32 ctx[DSS_SZ_REGS / sizeof(u32)];
247 const struct dss_features *feat;
251 struct dss_debugfs_entry *clk;
252 struct dss_debugfs_entry *dss;
255 struct dss_pll *plls[4];
256 struct dss_pll *video1_pll;
257 struct dss_pll *video2_pll;
259 struct dispc_device *dispc;
260 const struct dispc_ops *dispc_ops;
261 const struct dss_mgr_ops *mgr_ops;
262 struct omap_drm_private *mgr_ops_priv;
266 static inline int dss_set_min_bus_tput(struct device *dev, unsigned long tput)
268 /* To be implemented when the OMAP platform will provide this feature */
272 static inline bool dss_mgr_is_lcd(enum omap_channel id)
274 if (id == OMAP_DSS_CHANNEL_LCD || id == OMAP_DSS_CHANNEL_LCD2 ||
275 id == OMAP_DSS_CHANNEL_LCD3)
282 #if defined(CONFIG_OMAP2_DSS_DEBUGFS)
283 struct dss_debugfs_entry *
284 dss_debugfs_create_file(struct dss_device *dss, const char *name,
285 int (*show_fn)(struct seq_file *s, void *data),
287 void dss_debugfs_remove_file(struct dss_debugfs_entry *entry);
289 static inline struct dss_debugfs_entry *
290 dss_debugfs_create_file(struct dss_device *dss, const char *name,
291 int (*show_fn)(struct seq_file *s, void *data),
297 static inline void dss_debugfs_remove_file(struct dss_debugfs_entry *entry)
300 #endif /* CONFIG_OMAP2_DSS_DEBUGFS */
302 struct dss_device *dss_get_device(struct device *dev);
304 int dss_runtime_get(struct dss_device *dss);
305 void dss_runtime_put(struct dss_device *dss);
307 unsigned long dss_get_dispc_clk_rate(struct dss_device *dss);
308 unsigned long dss_get_max_fck_rate(struct dss_device *dss);
309 int dss_dpi_select_source(struct dss_device *dss, int port,
310 enum omap_channel channel);
311 void dss_select_hdmi_venc_clk_source(struct dss_device *dss,
312 enum dss_hdmi_venc_clk_source_select src);
313 const char *dss_get_clk_source_name(enum dss_clk_source clk_src);
316 struct dss_pll *dss_video_pll_init(struct dss_device *dss,
317 struct platform_device *pdev, int id,
318 struct regulator *regulator);
319 void dss_video_pll_uninit(struct dss_pll *pll);
321 void dss_ctrl_pll_enable(struct dss_pll *pll, bool enable);
323 void dss_sdi_init(struct dss_device *dss, int datapairs);
324 int dss_sdi_enable(struct dss_device *dss);
325 void dss_sdi_disable(struct dss_device *dss);
327 void dss_select_dsi_clk_source(struct dss_device *dss, int dsi_module,
328 enum dss_clk_source clk_src);
329 void dss_select_lcd_clk_source(struct dss_device *dss,
330 enum omap_channel channel,
331 enum dss_clk_source clk_src);
332 enum dss_clk_source dss_get_dispc_clk_source(struct dss_device *dss);
333 enum dss_clk_source dss_get_dsi_clk_source(struct dss_device *dss,
335 enum dss_clk_source dss_get_lcd_clk_source(struct dss_device *dss,
336 enum omap_channel channel);
338 void dss_set_venc_output(struct dss_device *dss, enum omap_dss_venc_type type);
339 void dss_set_dac_pwrdn_bgz(struct dss_device *dss, bool enable);
341 int dss_set_fck_rate(struct dss_device *dss, unsigned long rate);
343 typedef bool (*dss_div_calc_func)(unsigned long fck, void *data);
344 bool dss_div_calc(struct dss_device *dss, unsigned long pck,
345 unsigned long fck_min, dss_div_calc_func func, void *data);
348 #ifdef CONFIG_OMAP2_DSS_SDI
349 int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
350 struct device_node *port);
351 void sdi_uninit_port(struct device_node *port);
353 static inline int sdi_init_port(struct dss_device *dss,
354 struct platform_device *pdev,
355 struct device_node *port)
359 static inline void sdi_uninit_port(struct device_node *port)
366 #ifdef CONFIG_OMAP2_DSS_DSI
368 void dsi_irq_handler(void);
373 #ifdef CONFIG_OMAP2_DSS_DPI
374 int dpi_init_port(struct dss_device *dss, struct platform_device *pdev,
375 struct device_node *port, enum dss_model dss_model);
376 void dpi_uninit_port(struct device_node *port);
378 static inline int dpi_init_port(struct dss_device *dss,
379 struct platform_device *pdev,
380 struct device_node *port,
381 enum dss_model dss_model)
385 static inline void dpi_uninit_port(struct device_node *port)
391 void dispc_dump_clocks(struct dispc_device *dispc, struct seq_file *s);
393 int dispc_runtime_get(struct dispc_device *dispc);
394 void dispc_runtime_put(struct dispc_device *dispc);
396 void dispc_enable_sidle(struct dispc_device *dispc);
397 void dispc_disable_sidle(struct dispc_device *dispc);
399 void dispc_lcd_enable_signal(struct dispc_device *dispc, bool enable);
400 void dispc_pck_free_enable(struct dispc_device *dispc, bool enable);
401 void dispc_enable_fifomerge(struct dispc_device *dispc, bool enable);
403 typedef bool (*dispc_div_calc_func)(int lckd, int pckd, unsigned long lck,
404 unsigned long pck, void *data);
405 bool dispc_div_calc(struct dispc_device *dispc, unsigned long dispc_freq,
406 unsigned long pck_min, unsigned long pck_max,
407 dispc_div_calc_func func, void *data);
409 int dispc_calc_clock_rates(struct dispc_device *dispc,
410 unsigned long dispc_fclk_rate,
411 struct dispc_clock_info *cinfo);
414 void dispc_ovl_set_fifo_threshold(struct dispc_device *dispc,
415 enum omap_plane_id plane, u32 low, u32 high);
416 void dispc_ovl_compute_fifo_thresholds(struct dispc_device *dispc,
417 enum omap_plane_id plane,
418 u32 *fifo_low, u32 *fifo_high,
419 bool use_fifomerge, bool manual_update);
421 void dispc_mgr_set_clock_div(struct dispc_device *dispc,
422 enum omap_channel channel,
423 const struct dispc_clock_info *cinfo);
424 int dispc_mgr_get_clock_div(struct dispc_device *dispc,
425 enum omap_channel channel,
426 struct dispc_clock_info *cinfo);
427 void dispc_set_tv_pclk(struct dispc_device *dispc, unsigned long pclk);
429 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
430 static inline void dss_collect_irq_stats(u32 irqstatus, unsigned int *irq_arr)
433 for (b = 0; b < 32; ++b) {
434 if (irqstatus & (1 << b))
441 typedef bool (*dss_pll_calc_func)(int n, int m, unsigned long fint,
442 unsigned long clkdco, void *data);
443 typedef bool (*dss_hsdiv_calc_func)(int m_dispc, unsigned long dispc,
446 int dss_pll_register(struct dss_device *dss, struct dss_pll *pll);
447 void dss_pll_unregister(struct dss_pll *pll);
448 struct dss_pll *dss_pll_find(struct dss_device *dss, const char *name);
449 struct dss_pll *dss_pll_find_by_src(struct dss_device *dss,
450 enum dss_clk_source src);
451 unsigned int dss_pll_get_clkout_idx_for_src(enum dss_clk_source src);
452 int dss_pll_enable(struct dss_pll *pll);
453 void dss_pll_disable(struct dss_pll *pll);
454 int dss_pll_set_config(struct dss_pll *pll,
455 const struct dss_pll_clock_info *cinfo);
457 bool dss_pll_hsdiv_calc_a(const struct dss_pll *pll, unsigned long clkdco,
458 unsigned long out_min, unsigned long out_max,
459 dss_hsdiv_calc_func func, void *data);
460 bool dss_pll_calc_a(const struct dss_pll *pll, unsigned long clkin,
461 unsigned long pll_min, unsigned long pll_max,
462 dss_pll_calc_func func, void *data);
464 bool dss_pll_calc_b(const struct dss_pll *pll, unsigned long clkin,
465 unsigned long target_clkout, struct dss_pll_clock_info *cinfo);
467 int dss_pll_write_config_type_a(struct dss_pll *pll,
468 const struct dss_pll_clock_info *cinfo);
469 int dss_pll_write_config_type_b(struct dss_pll *pll,
470 const struct dss_pll_clock_info *cinfo);
471 int dss_pll_wait_reset_done(struct dss_pll *pll);
473 extern struct platform_driver omap_dsshw_driver;
474 extern struct platform_driver omap_dispchw_driver;
475 #ifdef CONFIG_OMAP2_DSS_DSI
476 extern struct platform_driver omap_dsihw_driver;
478 #ifdef CONFIG_OMAP2_DSS_VENC
479 extern struct platform_driver omap_venchw_driver;
481 #ifdef CONFIG_OMAP4_DSS_HDMI
482 extern struct platform_driver omapdss_hdmi4hw_driver;
484 #ifdef CONFIG_OMAP5_DSS_HDMI
485 extern struct platform_driver omapdss_hdmi5hw_driver;