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
104  * @enabled: sysc runtime enabled status
117 struct sysc {  struct
139 	void (*pre_reset_quirk)(struct sysc *sysc);  argument
140 	void (*post_reset_quirk)(struct sysc *sysc);  argument
141 	void (*reset_done_quirk)(struct sysc *sysc);  argument
142 	void (*module_enable_quirk)(struct sysc *sysc);  argument
143 	void (*module_disable_quirk)(struct sysc *sysc);  argument
144 	void (*module_unlock_quirk)(struct sysc *sysc);  argument
145 	void (*module_lock_quirk)(struct sysc *sysc);  argument
148 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
151 static void sysc_write(struct sysc *ddata, int offset, u32 value)  in sysc_write()
170 static u32 sysc_read(struct sysc *ddata, int offset)  in sysc_read()
191 static bool sysc_opt_clks_needed(struct sysc *ddata)  in sysc_opt_clks_needed()
196 static u32 sysc_read_revision(struct sysc *ddata)  in sysc_read_revision()
206 static u32 sysc_read_sysconfig(struct sysc *ddata)  in sysc_read_sysconfig()
216 static u32 sysc_read_sysstatus(struct sysc *ddata)  in sysc_read_sysstatus()
227 static int sysc_wait_softreset(struct sysc *ddata)  in sysc_wait_softreset()
257 static int sysc_add_named_clock_from_child(struct sysc *ddata,  in sysc_add_named_clock_from_child()
307 static int sysc_init_ext_opt_clock(struct sysc *ddata, const char *name)  in sysc_init_ext_opt_clock()
332 static int sysc_get_one_clock(struct sysc *ddata, const char *name)  in sysc_get_one_clock()
374 static int sysc_get_clocks(struct sysc *ddata)  in sysc_get_clocks()
444 static int sysc_enable_main_clocks(struct sysc *ddata)  in sysc_enable_main_clocks()
480 static void sysc_disable_main_clocks(struct sysc *ddata)  in sysc_disable_main_clocks()
497 static int sysc_enable_opt_clocks(struct sysc *ddata)  in sysc_enable_opt_clocks()
531 static void sysc_disable_opt_clocks(struct sysc *ddata)  in sysc_disable_opt_clocks()
550 static void sysc_clkdm_deny_idle(struct sysc *ddata)  in sysc_clkdm_deny_idle()
562 static void sysc_clkdm_allow_idle(struct sysc *ddata)  in sysc_clkdm_allow_idle()
580 static int sysc_init_resets(struct sysc *ddata)  in sysc_init_resets()
592  * In general we only need rev, syss, and sysc registers and not the whole
597 static int sysc_parse_and_check_child_range(struct sysc *ddata)  in sysc_parse_and_check_child_range()
662 static int sysc_defer_non_critical(struct sysc *ddata)  in sysc_defer_non_critical()
687 static void sysc_init_stdout_path(struct sysc *ddata)  in sysc_init_stdout_path()
718 static void sysc_check_quirk_stdout(struct sysc *ddata,  in sysc_check_quirk_stdout()
738 static void sysc_check_one_child(struct sysc *ddata,  in sysc_check_one_child()
744 	if (name && !of_device_is_compatible(np, "ti,sysc"))  in sysc_check_one_child()
751 static void sysc_check_children(struct sysc *ddata)  in sysc_check_children()
765 static void sysc_check_quirk_16bit(struct sysc *ddata, struct resource *res)  in sysc_check_quirk_16bit()
776 static int sysc_parse_one(struct sysc *ddata, enum sysc_registers reg)  in sysc_parse_one()
806 static int sysc_parse_registers(struct sysc *ddata)  in sysc_parse_registers()
823 static int sysc_check_registers(struct sysc *ddata)  in sysc_check_registers()
868 static int sysc_ioremap(struct sysc *ddata)  in sysc_ioremap()
901 static int sysc_map_and_check_registers(struct sysc *ddata)  in sysc_map_and_check_registers()
939 static int sysc_show_rev(char *bufp, struct sysc *ddata)  in sysc_show_rev()
951 static int sysc_show_reg(struct sysc *ddata,  in sysc_show_reg()
960 static int sysc_show_name(char *bufp, struct sysc *ddata)  in sysc_show_name()
972 static void sysc_show_registers(struct sysc *ddata)  in sysc_show_registers()
994 static void sysc_write_sysconfig(struct sysc *ddata, u32 value)  in sysc_write_sysconfig()
1011 	struct sysc *ddata;  in sysc_enable_module()
1141 	struct sysc *ddata;  in sysc_disable_module()
1205 						      struct sysc *ddata)  in sysc_runtime_suspend_legacy()
1228 						     struct sysc *ddata)  in sysc_runtime_resume_legacy()
1252 	struct sysc *ddata;  in sysc_runtime_suspend()
1289 	struct sysc *ddata;  in sysc_runtime_resume()
1339 static int sysc_reinit_module(struct sysc *ddata, bool leave_enabled)  in sysc_reinit_module()
1369 	struct sysc *ddata;  in sysc_noirq_suspend()
1387 	struct sysc *ddata;  in sysc_noirq_resume()
1612 static void sysc_init_early_quirks(struct sysc *ddata)  in sysc_init_early_quirks()
1641 static void sysc_init_revision_quirks(struct sysc *ddata)  in sysc_init_revision_quirks()
1675 static u32 sysc_quirk_dispc(struct sysc *ddata, int dispc_offset,  in sysc_quirk_dispc()
1757 static void sysc_pre_reset_quirk_dss(struct sysc *ddata)  in sysc_pre_reset_quirk_dss()
1794 static void sysc_pre_reset_quirk_hdq1w(struct sysc *ddata)  in sysc_pre_reset_quirk_hdq1w()
1805 static void sysc_module_enable_quirk_aess(struct sysc *ddata)  in sysc_module_enable_quirk_aess()
1813 static void sysc_clk_quirk_i2c(struct sysc *ddata, bool enable)  in sysc_clk_quirk_i2c()
1833 static void sysc_pre_reset_quirk_i2c(struct sysc *ddata)  in sysc_pre_reset_quirk_i2c()
1838 static void sysc_post_reset_quirk_i2c(struct sysc *ddata)  in sysc_post_reset_quirk_i2c()
1844 static void sysc_quirk_rtc(struct sysc *ddata, bool lock)  in sysc_quirk_rtc()
1867 static void sysc_module_unlock_quirk_rtc(struct sysc *ddata)  in sysc_module_unlock_quirk_rtc()
1872 static void sysc_module_lock_quirk_rtc(struct sysc *ddata)  in sysc_module_lock_quirk_rtc()
1878 static void sysc_module_enable_quirk_sgx(struct sysc *ddata)  in sysc_module_enable_quirk_sgx()
1887 static void sysc_reset_done_quirk_wdt(struct sysc *ddata)  in sysc_reset_done_quirk_wdt()
1911 static void sysc_module_disable_quirk_pruss(struct sysc *ddata)  in sysc_module_disable_quirk_pruss()
1920 static void sysc_init_module_quirks(struct sysc *ddata)  in sysc_init_module_quirks()
1971 static int sysc_clockdomain_init(struct sysc *ddata)  in sysc_clockdomain_init()
2003 static int sysc_legacy_init(struct sysc *ddata)  in sysc_legacy_init()
2022 static int sysc_reset(struct sysc *ddata)  in sysc_reset()
2068 static int sysc_init_module(struct sysc *ddata)  in sysc_init_module()
2138 static int sysc_init_sysc_mask(struct sysc *ddata)  in sysc_init_sysc_mask()
2144 	error = of_property_read_u32(np, "ti,sysc-mask", &val);  in sysc_init_sysc_mask()
2153 static int sysc_init_idlemode(struct sysc *ddata, u8 *idlemodes,  in sysc_init_idlemode()
2172 static int sysc_init_idlemodes(struct sysc *ddata)  in sysc_init_idlemodes()
2177 				   "ti,sysc-midle");  in sysc_init_idlemodes()
2182 				   "ti,sysc-sidle");  in sysc_init_idlemodes()
2194  * Depends on SYSC being parsed first.
2196 static int sysc_init_syss_mask(struct sysc *ddata)  in sysc_init_syss_mask()
2224 static int sysc_child_add_named_clock(struct sysc *ddata,  in sysc_child_add_named_clock()
2254 static int sysc_child_add_clocks(struct sysc *ddata,  in sysc_child_add_clocks()
2277 static struct sysc *sysc_child_to_parent(struct device *dev)  in sysc_child_to_parent()
2289 	struct sysc *ddata;  in sysc_child_runtime_suspend()
2306 	struct sysc *ddata;  in sysc_child_runtime_resume()
2324 	struct sysc *ddata;  in sysc_child_suspend_noirq()
2365 	struct sysc *ddata;  in sysc_child_resume_noirq()
2417 static void sysc_legacy_idle_quirk(struct sysc *ddata, struct device *child)  in sysc_legacy_idle_quirk()
2427 	struct sysc *ddata;  in sysc_notifier_call()
2467 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,  in sysc_parse_dts_quirks()
2489 static int sysc_init_dts_quirks(struct sysc *ddata)  in sysc_init_dts_quirks()
2498 	error = of_property_read_u32(np, "ti,sysc-delay-us", &val);  in sysc_init_dts_quirks()
2501 			dev_warn(ddata->dev, "bad ti,sysc-delay-us: %i\n",  in sysc_init_dts_quirks()
2511 static void sysc_unprepare(struct sysc *ddata)  in sysc_unprepare()
2525  * Common sysc register bits found on omap2, also known as type1
2557  * SHAM2 (SHA1/MD5) sysc found on omap3, a variant of sysc_regbits_omap2
2599  * Common sysc register bits found on omap4, also known as type2
2627  * Common sysc register bits found on omap4, also known as type3
2646  * SmartReflex sysc found on omap34xx
2668  * SmartReflex sysc found on omap36xx and later
2771 static int sysc_init_pdata(struct sysc *ddata)  in sysc_init_pdata()
2798 static int sysc_init_match(struct sysc *ddata)  in sysc_init_match()
2815 	struct sysc *ddata;  in ti_sysc_idle()
2817 	ddata = container_of(work, struct sysc, idle_work.work);  in ti_sysc_idle()
2904  * Note that we initialize static data shared across all ti-sysc instances
2908 static int sysc_init_soc(struct sysc *ddata)  in sysc_init_soc()
2946 			  "ti-sysc: Incomplete old dtb, please update\n");  in sysc_init_soc()
3005 static int sysc_check_disabled_devices(struct sysc *ddata)  in sysc_check_disabled_devices()
3030 static int sysc_check_active_timer(struct sysc *ddata)  in sysc_check_active_timer()
3051 	struct sysc *ddata;  in sysc_probe()
3175 	struct sysc *ddata = platform_get_drvdata(pdev);  in sysc_remove()
3201 	{ .compatible = "ti,sysc-omap2", .data = &sysc_omap2, },
3202 	{ .compatible = "ti,sysc-omap2-timer", .data = &sysc_omap2_timer, },
3203 	{ .compatible = "ti,sysc-omap4", .data = &sysc_omap4, },
3204 	{ .compatible = "ti,sysc-omap4-timer", .data = &sysc_omap4_timer, },
3205 	{ .compatible = "ti,sysc-omap4-simple", .data = &sysc_omap4_simple, },
3206 	{ .compatible = "ti,sysc-omap3430-sr", .data = &sysc_34xx_sr, },
3207 	{ .compatible = "ti,sysc-omap3630-sr", .data = &sysc_36xx_sr, },
3208 	{ .compatible = "ti,sysc-omap4-sr", .data = &sysc_omap4_sr, },
3209 	{ .compatible = "ti,sysc-omap3-sham", .data = &sysc_omap3_sham, },
3210 	{ .compatible = "ti,sysc-omap-aes", .data = &sysc_omap3_aes, },
3211 	{ .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, },
3212 	{ .compatible = "ti,sysc-dra7-mcasp", .data = &sysc_dra7_mcasp, },
3213 	{ .compatible = "ti,sysc-usb-host-fs",
3215 	{ .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, },
3216 	{ .compatible = "ti,sysc-pruss", .data = &sysc_pruss, },
3225 		.name   = "ti-sysc",
3247 MODULE_DESCRIPTION("TI sysc interconnect target driver");