3  * ti-sysc.c - Texas Instruments sysc interconnect target driver
22 #include <linux/platform_data/ti-sysc.h>
24 #include <dt-bindings/bus/ti-sysc.h>
76 static const char * const reg_names[] = { "rev", "sysc", "syss", };
86  * struct sysc - TI sysc interconnect target module registers and capabilities
92  * @mdata: ti-sysc to hwmod translation data for a module
103  * @enabled: sysc runtime enabled status
116 struct sysc {  struct
137 	void (*pre_reset_quirk)(struct sysc *sysc);  argument
138 	void (*post_reset_quirk)(struct sysc *sysc);  argument
139 	void (*reset_done_quirk)(struct sysc *sysc);  argument
140 	void (*module_enable_quirk)(struct sysc *sysc);  argument
141 	void (*module_disable_quirk)(struct sysc *sysc);  argument
142 	void (*module_unlock_quirk)(struct sysc *sysc);  argument
143 	void (*module_lock_quirk)(struct sysc *sysc);  argument
146 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
149 static void sysc_write(struct sysc *ddata, int offset, u32 value)  in sysc_write()
168 static u32 sysc_read(struct sysc *ddata, int offset)  in sysc_read()
189 static bool sysc_opt_clks_needed(struct sysc *ddata)  in sysc_opt_clks_needed()
194 static u32 sysc_read_revision(struct sysc *ddata)  in sysc_read_revision()
204 static u32 sysc_read_sysconfig(struct sysc *ddata)  in sysc_read_sysconfig()
214 static u32 sysc_read_sysstatus(struct sysc *ddata)  in sysc_read_sysstatus()
225 static int sysc_wait_softreset(struct sysc *ddata)  in sysc_wait_softreset()
255 static int sysc_add_named_clock_from_child(struct sysc *ddata,  in sysc_add_named_clock_from_child()
305 static int sysc_init_ext_opt_clock(struct sysc *ddata, const char *name)  in sysc_init_ext_opt_clock()
330 static int sysc_get_one_clock(struct sysc *ddata, const char *name)  in sysc_get_one_clock()
372 static int sysc_get_clocks(struct sysc *ddata)  in sysc_get_clocks()
442 static int sysc_enable_main_clocks(struct sysc *ddata)  in sysc_enable_main_clocks()
478 static void sysc_disable_main_clocks(struct sysc *ddata)  in sysc_disable_main_clocks()
495 static int sysc_enable_opt_clocks(struct sysc *ddata)  in sysc_enable_opt_clocks()
529 static void sysc_disable_opt_clocks(struct sysc *ddata)  in sysc_disable_opt_clocks()
548 static void sysc_clkdm_deny_idle(struct sysc *ddata)  in sysc_clkdm_deny_idle()
560 static void sysc_clkdm_allow_idle(struct sysc *ddata)  in sysc_clkdm_allow_idle()
578 static int sysc_init_resets(struct sysc *ddata)  in sysc_init_resets()
590  * In general we only need rev, syss, and sysc registers and not the whole
595 static int sysc_parse_and_check_child_range(struct sysc *ddata)  in sysc_parse_and_check_child_range()
640 static void sysc_init_stdout_path(struct sysc *ddata)  in sysc_init_stdout_path()
671 static void sysc_check_quirk_stdout(struct sysc *ddata,  in sysc_check_quirk_stdout()
691 static void sysc_check_one_child(struct sysc *ddata,  in sysc_check_one_child()
697 	if (name && !of_device_is_compatible(np, "ti,sysc"))  in sysc_check_one_child()
704 static void sysc_check_children(struct sysc *ddata)  in sysc_check_children()
718 static void sysc_check_quirk_16bit(struct sysc *ddata, struct resource *res)  in sysc_check_quirk_16bit()
729 static int sysc_parse_one(struct sysc *ddata, enum sysc_registers reg)  in sysc_parse_one()
759 static int sysc_parse_registers(struct sysc *ddata)  in sysc_parse_registers()
776 static int sysc_check_registers(struct sysc *ddata)  in sysc_check_registers()
821 static int sysc_ioremap(struct sysc *ddata)  in sysc_ioremap()
854 static int sysc_map_and_check_registers(struct sysc *ddata)  in sysc_map_and_check_registers()
884 static int sysc_show_rev(char *bufp, struct sysc *ddata)  in sysc_show_rev()
896 static int sysc_show_reg(struct sysc *ddata,  in sysc_show_reg()
905 static int sysc_show_name(char *bufp, struct sysc *ddata)  in sysc_show_name()
917 static void sysc_show_registers(struct sysc *ddata)  in sysc_show_registers()
939 static void sysc_write_sysconfig(struct sysc *ddata, u32 value)  in sysc_write_sysconfig()
956 	struct sysc *ddata;  in sysc_enable_module()
1086 	struct sysc *ddata;  in sysc_disable_module()
1150 						      struct sysc *ddata)  in sysc_runtime_suspend_legacy()
1173 						     struct sysc *ddata)  in sysc_runtime_resume_legacy()
1197 	struct sysc *ddata;  in sysc_runtime_suspend()
1234 	struct sysc *ddata;  in sysc_runtime_resume()
1286 	struct sysc *ddata;  in sysc_noirq_suspend()
1299 	struct sysc *ddata;  in sysc_noirq_resume()
1498 static void sysc_init_early_quirks(struct sysc *ddata)  in sysc_init_early_quirks()
1527 static void sysc_init_revision_quirks(struct sysc *ddata)  in sysc_init_revision_quirks()
1561 static u32 sysc_quirk_dispc(struct sysc *ddata, int dispc_offset,  in sysc_quirk_dispc()
1643 static void sysc_pre_reset_quirk_dss(struct sysc *ddata)  in sysc_pre_reset_quirk_dss()
1680 static void sysc_pre_reset_quirk_hdq1w(struct sysc *ddata)  in sysc_pre_reset_quirk_hdq1w()
1691 static void sysc_module_enable_quirk_aess(struct sysc *ddata)  in sysc_module_enable_quirk_aess()
1699 static void sysc_clk_quirk_i2c(struct sysc *ddata, bool enable)  in sysc_clk_quirk_i2c()
1719 static void sysc_pre_reset_quirk_i2c(struct sysc *ddata)  in sysc_pre_reset_quirk_i2c()
1724 static void sysc_post_reset_quirk_i2c(struct sysc *ddata)  in sysc_post_reset_quirk_i2c()
1730 static void sysc_quirk_rtc(struct sysc *ddata, bool lock)  in sysc_quirk_rtc()
1753 static void sysc_module_unlock_quirk_rtc(struct sysc *ddata)  in sysc_module_unlock_quirk_rtc()
1758 static void sysc_module_lock_quirk_rtc(struct sysc *ddata)  in sysc_module_lock_quirk_rtc()
1764 static void sysc_module_enable_quirk_sgx(struct sysc *ddata)  in sysc_module_enable_quirk_sgx()
1773 static void sysc_reset_done_quirk_wdt(struct sysc *ddata)  in sysc_reset_done_quirk_wdt()
1797 static void sysc_module_disable_quirk_pruss(struct sysc *ddata)  in sysc_module_disable_quirk_pruss()
1806 static void sysc_init_module_quirks(struct sysc *ddata)  in sysc_init_module_quirks()
1849 static int sysc_clockdomain_init(struct sysc *ddata)  in sysc_clockdomain_init()
1881 static int sysc_legacy_init(struct sysc *ddata)  in sysc_legacy_init()
1900 static int sysc_reset(struct sysc *ddata)  in sysc_reset()
1946 static int sysc_init_module(struct sysc *ddata)  in sysc_init_module()
2014 static int sysc_init_sysc_mask(struct sysc *ddata)  in sysc_init_sysc_mask()
2020 	error = of_property_read_u32(np, "ti,sysc-mask", &val);  in sysc_init_sysc_mask()
2029 static int sysc_init_idlemode(struct sysc *ddata, u8 *idlemodes,  in sysc_init_idlemode()
2048 static int sysc_init_idlemodes(struct sysc *ddata)  in sysc_init_idlemodes()
2053 				   "ti,sysc-midle");  in sysc_init_idlemodes()
2058 				   "ti,sysc-sidle");  in sysc_init_idlemodes()
2070  * Depends on SYSC being parsed first.
2072 static int sysc_init_syss_mask(struct sysc *ddata)  in sysc_init_syss_mask()
2100 static int sysc_child_add_named_clock(struct sysc *ddata,  in sysc_child_add_named_clock()
2130 static int sysc_child_add_clocks(struct sysc *ddata,  in sysc_child_add_clocks()
2153 static struct sysc *sysc_child_to_parent(struct device *dev)  in sysc_child_to_parent()
2165 	struct sysc *ddata;  in sysc_child_runtime_suspend()
2182 	struct sysc *ddata;  in sysc_child_runtime_resume()
2200 	struct sysc *ddata;  in sysc_child_suspend_noirq()
2241 	struct sysc *ddata;  in sysc_child_resume_noirq()
2293 static void sysc_legacy_idle_quirk(struct sysc *ddata, struct device *child)  in sysc_legacy_idle_quirk()
2303 	struct sysc *ddata;  in sysc_notifier_call()
2343 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,  in sysc_parse_dts_quirks()
2365 static int sysc_init_dts_quirks(struct sysc *ddata)  in sysc_init_dts_quirks()
2374 	error = of_property_read_u32(np, "ti,sysc-delay-us", &val);  in sysc_init_dts_quirks()
2377 			dev_warn(ddata->dev, "bad ti,sysc-delay-us: %i\n",  in sysc_init_dts_quirks()
2387 static void sysc_unprepare(struct sysc *ddata)  in sysc_unprepare()
2401  * Common sysc register bits found on omap2, also known as type1
2433  * SHAM2 (SHA1/MD5) sysc found on omap3, a variant of sysc_regbits_omap2
2475  * Common sysc register bits found on omap4, also known as type2
2503  * Common sysc register bits found on omap4, also known as type3
2522  * SmartReflex sysc found on omap34xx
2544  * SmartReflex sysc found on omap36xx and later
2647 static int sysc_init_pdata(struct sysc *ddata)  in sysc_init_pdata()
2674 static int sysc_init_match(struct sysc *ddata)  in sysc_init_match()
2691 	struct sysc *ddata;  in ti_sysc_idle()
2693 	ddata = container_of(work, struct sysc, idle_work.work);  in ti_sysc_idle()
2780  * Note that we initialize static data shared across all ti-sysc instances
2784 static int sysc_init_soc(struct sysc *ddata)  in sysc_init_soc()
2859 static int sysc_check_disabled_devices(struct sysc *ddata)  in sysc_check_disabled_devices()
2884 static int sysc_check_active_timer(struct sysc *ddata)  in sysc_check_active_timer()
2905 	struct sysc *ddata;  in sysc_probe()
3021 	struct sysc *ddata = platform_get_drvdata(pdev);  in sysc_remove()
3046 	{ .compatible = "ti,sysc-omap2", .data = &sysc_omap2, },
3047 	{ .compatible = "ti,sysc-omap2-timer", .data = &sysc_omap2_timer, },
3048 	{ .compatible = "ti,sysc-omap4", .data = &sysc_omap4, },
3049 	{ .compatible = "ti,sysc-omap4-timer", .data = &sysc_omap4_timer, },
3050 	{ .compatible = "ti,sysc-omap4-simple", .data = &sysc_omap4_simple, },
3051 	{ .compatible = "ti,sysc-omap3430-sr", .data = &sysc_34xx_sr, },
3052 	{ .compatible = "ti,sysc-omap3630-sr", .data = &sysc_36xx_sr, },
3053 	{ .compatible = "ti,sysc-omap4-sr", .data = &sysc_omap4_sr, },
3054 	{ .compatible = "ti,sysc-omap3-sham", .data = &sysc_omap3_sham, },
3055 	{ .compatible = "ti,sysc-omap-aes", .data = &sysc_omap3_aes, },
3056 	{ .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, },
3057 	{ .compatible = "ti,sysc-dra7-mcasp", .data = &sysc_dra7_mcasp, },
3058 	{ .compatible = "ti,sysc-usb-host-fs",
3060 	{ .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, },
3061 	{ .compatible = "ti,sysc-pruss", .data = &sysc_pruss, },
3070 		.name   = "ti-sysc",
3092 MODULE_DESCRIPTION("TI sysc interconnect target driver");