drivers/bus/ti-sysc.c

3  * ti-sysc.c - Texas Instruments sysc interconnect target driver
35 #include <linux/platform_data/ti-sysc.h>
37 #include <dt-bindings/bus/ti-sysc.h>
69 	struct sysc *ddata;
97 static const char * const reg_names[] = { "rev", "sysc", "syss", };
107  * struct sysc - TI sysc interconnect target module registers and capabilities
113  * @mdata: ti-sysc to hwmod translation data for a module
126  * @enabled: sysc runtime enabled status
139 struct sysc {
162 	void (*pre_reset_quirk)(struct sysc *sysc);
163 	void (*post_reset_quirk)(struct sysc *sysc);
164 	void (*reset_done_quirk)(struct sysc *sysc);
165 	void (*module_enable_quirk)(struct sysc *sysc);
166 	void (*module_disable_quirk)(struct sysc *sysc);
167 	void (*module_unlock_quirk)(struct sysc *sysc);
168 	void (*module_lock_quirk)(struct sysc *sysc);
171 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
173 static int sysc_reset(struct sysc *ddata);
175 static void sysc_write(struct sysc *ddata, int offset, u32 value)
194 static u32 sysc_read(struct sysc *ddata, int offset)
215 static bool sysc_opt_clks_needed(struct sysc *ddata)
220 static u32 sysc_read_revision(struct sysc *ddata)
230 static u32 sysc_read_sysconfig(struct sysc *ddata)
240 static u32 sysc_read_sysstatus(struct sysc *ddata)
250 static int sysc_poll_reset_sysstatus(struct sysc *ddata)
278 static int sysc_poll_reset_sysconfig(struct sysc *ddata)
304 static int sysc_wait_softreset(struct sysc *ddata)
321 static int sysc_add_named_clock_from_child(struct sysc *ddata,
371 static int sysc_init_ext_opt_clock(struct sysc *ddata, const char *name)
396 static int sysc_get_one_clock(struct sysc *ddata, const char *name)
438 static int sysc_get_clocks(struct sysc *ddata)
508 static int sysc_enable_main_clocks(struct sysc *ddata)
544 static void sysc_disable_main_clocks(struct sysc *ddata)
561 static int sysc_enable_opt_clocks(struct sysc *ddata)
595 static void sysc_disable_opt_clocks(struct sysc *ddata)
614 static void sysc_clkdm_deny_idle(struct sysc *ddata)
626 static void sysc_clkdm_allow_idle(struct sysc *ddata)
644 static int sysc_init_resets(struct sysc *ddata)
656  * In general we only need rev, syss, and sysc registers and not the whole
661 static int sysc_parse_and_check_child_range(struct sysc *ddata)
703 static int sysc_defer_non_critical(struct sysc *ddata)
728 static void sysc_init_stdout_path(struct sysc *ddata)
759 static void sysc_check_quirk_stdout(struct sysc *ddata,
779 static void sysc_check_one_child(struct sysc *ddata,
785 	if (name && !of_device_is_compatible(np, "ti,sysc"))
792 static void sysc_check_children(struct sysc *ddata)
806 static void sysc_check_quirk_16bit(struct sysc *ddata, struct resource *res)
817 static int sysc_parse_one(struct sysc *ddata, enum sysc_registers reg)
847 static int sysc_parse_registers(struct sysc *ddata)
864 static int sysc_check_registers(struct sysc *ddata)
909 static int sysc_ioremap(struct sysc *ddata)
942 static int sysc_map_and_check_registers(struct sysc *ddata)
980 static int sysc_show_rev(char *bufp, struct sysc *ddata)
992 static int sysc_show_reg(struct sysc *ddata,
1001 static int sysc_show_name(char *bufp, struct sysc *ddata)
1013 static void sysc_show_registers(struct sysc *ddata)
1035 static void sysc_write_sysconfig(struct sysc *ddata, u32 value)
1052 	struct sysc *ddata;
1191 	struct sysc *ddata;
1268 						      struct sysc *ddata)
1291 						     struct sysc *ddata)
1315 	struct sysc *ddata;
1352 	struct sysc *ddata;
1410 static int sysc_check_context(struct sysc *ddata)
1424 static int sysc_reinit_module(struct sysc *ddata, bool leave_enabled)
1468 	struct sysc *ddata;
1485 	struct sysc *ddata;
1716 static void sysc_init_early_quirks(struct sysc *ddata)
1745 static void sysc_init_revision_quirks(struct sysc *ddata)
1779 static u32 sysc_quirk_dispc(struct sysc *ddata, int dispc_offset,
1861 static void sysc_pre_reset_quirk_dss(struct sysc *ddata)
1898 static void sysc_pre_reset_quirk_hdq1w(struct sysc *ddata)
1909 static void sysc_module_enable_quirk_aess(struct sysc *ddata)
1917 static void sysc_clk_quirk_i2c(struct sysc *ddata, bool enable)
1937 static void sysc_pre_reset_quirk_i2c(struct sysc *ddata)
1942 static void sysc_post_reset_quirk_i2c(struct sysc *ddata)
1948 static void sysc_quirk_rtc(struct sysc *ddata, bool lock)
1971 static void sysc_module_unlock_quirk_rtc(struct sysc *ddata)
1976 static void sysc_module_lock_quirk_rtc(struct sysc *ddata)
1982 static void sysc_module_enable_quirk_otg(struct sysc *ddata)
1989 static void sysc_module_disable_quirk_otg(struct sysc *ddata)
1998 static void sysc_module_enable_quirk_sgx(struct sysc *ddata)
2007 static void sysc_reset_done_quirk_wdt(struct sysc *ddata)
2031 static void sysc_module_disable_quirk_pruss(struct sysc *ddata)
2040 static void sysc_init_module_quirks(struct sysc *ddata)
2096 static int sysc_clockdomain_init(struct sysc *ddata)
2128 static int sysc_legacy_init(struct sysc *ddata)
2147 static int sysc_reset(struct sysc *ddata)
2203 static int sysc_init_module(struct sysc *ddata)
2275 static int sysc_init_sysc_mask(struct sysc *ddata)
2281 	error = of_property_read_u32(np, "ti,sysc-mask", &val);
2290 static int sysc_init_idlemode(struct sysc *ddata, u8 *idlemodes,
2309 static int sysc_init_idlemodes(struct sysc *ddata)
2314 				   "ti,sysc-midle");
2319 				   "ti,sysc-sidle");
2333 static int sysc_init_syss_mask(struct sysc *ddata)
2361 static int sysc_child_add_named_clock(struct sysc *ddata,
2391 static int sysc_child_add_clocks(struct sysc *ddata,
2414 static struct sysc *sysc_child_to_parent(struct device *dev)
2426 	struct sysc *ddata;
2443 	struct sysc *ddata;
2462 	struct sysc *ddata;
2504 static void sysc_add_restored(struct sysc *ddata)
2532 	struct sysc *ddata;
2571 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
2593 static int sysc_init_dts_quirks(struct sysc *ddata)
2602 	error = of_property_read_u32(np, "ti,sysc-delay-us", &val);
2605 			dev_warn(ddata->dev, "bad ti,sysc-delay-us: %i\n",
2615 static void sysc_unprepare(struct sysc *ddata)
2629  * Common sysc register bits found on omap2, also known as type1
2661  * SHAM2 (SHA1/MD5) sysc found on omap3, a variant of sysc_regbits_omap2
2703  * Common sysc register bits found on omap4, also known as type2
2731  * Common sysc register bits found on omap4, also known as type3
2750  * SmartReflex sysc found on omap34xx
2771  * SmartReflex sysc found on omap36xx and later
2873 static int sysc_init_pdata(struct sysc *ddata)
2900 static int sysc_init_match(struct sysc *ddata)
2917 	struct sysc *ddata;
2919 	ddata = container_of(work, struct sysc, idle_work.work);
3009  * Note that we initialize static data shared across all ti-sysc instances
3013 static int sysc_init_static_data(struct sysc *ddata)
3052 			  "ti-sysc: Incomplete old dtb, please update\n");
3120 static int sysc_check_disabled_devices(struct sysc *ddata)
3143 static int sysc_check_active_timer(struct sysc *ddata)
3178 	struct sysc *ddata;
3305 	struct sysc *ddata = platform_get_drvdata(pdev);
3331 	{ .compatible = "ti,sysc-omap2", .data = &sysc_omap2, },
3332 	{ .compatible = "ti,sysc-omap2-timer", .data = &sysc_omap2_timer, },
3333 	{ .compatible = "ti,sysc-omap4", .data = &sysc_omap4, },
3334 	{ .compatible = "ti,sysc-omap4-timer", .data = &sysc_omap4_timer, },
3335 	{ .compatible = "ti,sysc-omap4-simple", .data = &sysc_omap4_simple, },
3336 	{ .compatible = "ti,sysc-omap3430-sr", .data = &sysc_34xx_sr, },
3337 	{ .compatible = "ti,sysc-omap3630-sr", .data = &sysc_36xx_sr, },
3338 	{ .compatible = "ti,sysc-omap4-sr", .data = &sysc_omap4_sr, },
3339 	{ .compatible = "ti,sysc-omap3-sham", .data = &sysc_omap3_sham, },
3340 	{ .compatible = "ti,sysc-omap-aes", .data = &sysc_omap3_aes, },
3341 	{ .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, },
3342 	{ .compatible = "ti,sysc-dra7-mcasp", .data = &sysc_dra7_mcasp, },
3343 	{ .compatible = "ti,sysc-usb-host-fs",
3345 	{ .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, },
3346 	{ .compatible = "ti,sysc-pruss", .data = &sysc_pruss, },
3355 		.name   = "ti-sysc",
3377 MODULE_DESCRIPTION("TI sysc interconnect target driver");