diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-19 11:11:20 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-19 11:11:20 -0700 |
commit | a13f950ef13ff1eaf2ce14f5462ca59c4b60fdd0 (patch) | |
tree | 0a660b71881580c9222f2d36d9d9899f0e9e953d /include/linux | |
parent | d9351ea14ddca708d3cb384f828af4bf82fcc772 (diff) | |
parent | ea7a5f90f103591f1f38dede52e731ec95ef3c55 (diff) |
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull clocksource updates from Ingo Molnar:
"Misc clocksource/clockevent driver updates that came in a bit late but
are ready for v5.2"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
misc: atmel_tclib: Do not probe already used TCBs
clocksource/drivers/timer-atmel-tcb: Convert tc_clksrc_suspend|resume() to static
clocksource/drivers/tcb_clksrc: Rename the file for consistency
clocksource/drivers/timer-atmel-pit: Rework Kconfig option
clocksource/drivers/tcb_clksrc: Move Kconfig option
ARM: at91: Implement clocksource selection
clocksource/drivers/tcb_clksrc: Use tcb as sched_clock
clocksource/drivers/tcb_clksrc: Stop depending on atmel_tclib
ARM: at91: move SoC specific definitions to SoC folder
clocksource/drivers/timer-milbeaut: Cleanup common register accesses
clocksource/drivers/timer-milbeaut: Add shutdown function
clocksource/drivers/timer-milbeaut: Fix to enable one-shot timer
clocksource/drivers/tegra: Rework for compensation of suspend time
clocksource/drivers/sp804: Add COMPILE_TEST to CONFIG_ARM_TIMER_SP804
clocksource/drivers/sun4i: Add a compatible for suniv
dt-bindings: timer: Add Allwinner suniv timer
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/atmel_tc.h | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/include/linux/atmel_tc.h b/include/linux/atmel_tc.h deleted file mode 100644 index 468fdfa643f0..000000000000 --- a/include/linux/atmel_tc.h +++ /dev/null @@ -1,270 +0,0 @@ -/* - * Timer/Counter Unit (TC) registers. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef ATMEL_TC_H -#define ATMEL_TC_H - -#include <linux/compiler.h> -#include <linux/list.h> - -/* - * Many 32-bit Atmel SOCs include one or more TC blocks, each of which holds - * three general-purpose 16-bit timers. These timers share one register bank. - * Depending on the SOC, each timer may have its own clock and IRQ, or those - * may be shared by the whole TC block. - * - * These TC blocks may have up to nine external pins: TCLK0..2 signals for - * clocks or clock gates, and per-timer TIOA and TIOB signals used for PWM - * or triggering. Those pins need to be set up for use with the TC block, - * else they will be used as GPIOs or for a different controller. - * - * Although we expect each TC block to have a platform_device node, those - * nodes are not what drivers bind to. Instead, they ask for a specific - * TC block, by number ... which is a common approach on systems with many - * timers. Then they use clk_get() and platform_get_irq() to get clock and - * IRQ resources. - */ - -struct clk; - -/** - * struct atmel_tcb_config - SoC data for a Timer/Counter Block - * @counter_width: size in bits of a timer counter register - */ -struct atmel_tcb_config { - size_t counter_width; -}; - -/** - * struct atmel_tc - information about a Timer/Counter Block - * @pdev: physical device - * @regs: mapping through which the I/O registers can be accessed - * @id: block id - * @tcb_config: configuration data from SoC - * @irq: irq for each of the three channels - * @clk: internal clock source for each of the three channels - * @node: list node, for tclib internal use - * @allocated: if already used, for tclib internal use - * - * On some platforms, each TC channel has its own clocks and IRQs, - * while on others, all TC channels share the same clock and IRQ. - * Drivers should clk_enable() all the clocks they need even though - * all the entries in @clk may point to the same physical clock. - * Likewise, drivers should request irqs independently for each - * channel, but they must use IRQF_SHARED in case some of the entries - * in @irq are actually the same IRQ. - */ -struct atmel_tc { - struct platform_device *pdev; - void __iomem *regs; - int id; - const struct atmel_tcb_config *tcb_config; - int irq[3]; - struct clk *clk[3]; - struct clk *slow_clk; - struct list_head node; - bool allocated; -}; - -extern struct atmel_tc *atmel_tc_alloc(unsigned block); -extern void atmel_tc_free(struct atmel_tc *tc); - -/* platform-specific ATMEL_TC_TIMER_CLOCKx divisors (0 means 32KiHz) */ -extern const u8 atmel_tc_divisors[5]; - - -/* - * Two registers have block-wide controls. These are: configuring the three - * "external" clocks (or event sources) used by the timer channels; and - * synchronizing the timers by resetting them all at once. - * - * "External" can mean "external to chip" using the TCLK0, TCLK1, or TCLK2 - * signals. Or, it can mean "external to timer", using the TIOA output from - * one of the other two timers that's being run in waveform mode. - */ - -#define ATMEL_TC_BCR 0xc0 /* TC Block Control Register */ -#define ATMEL_TC_SYNC (1 << 0) /* synchronize timers */ - -#define ATMEL_TC_BMR 0xc4 /* TC Block Mode Register */ -#define ATMEL_TC_TC0XC0S (3 << 0) /* external clock 0 source */ -#define ATMEL_TC_TC0XC0S_TCLK0 (0 << 0) -#define ATMEL_TC_TC0XC0S_NONE (1 << 0) -#define ATMEL_TC_TC0XC0S_TIOA1 (2 << 0) -#define ATMEL_TC_TC0XC0S_TIOA2 (3 << 0) -#define ATMEL_TC_TC1XC1S (3 << 2) /* external clock 1 source */ -#define ATMEL_TC_TC1XC1S_TCLK1 (0 << 2) -#define ATMEL_TC_TC1XC1S_NONE (1 << 2) -#define ATMEL_TC_TC1XC1S_TIOA0 (2 << 2) -#define ATMEL_TC_TC1XC1S_TIOA2 (3 << 2) -#define ATMEL_TC_TC2XC2S (3 << 4) /* external clock 2 source */ -#define ATMEL_TC_TC2XC2S_TCLK2 (0 << 4) -#define ATMEL_TC_TC2XC2S_NONE (1 << 4) -#define ATMEL_TC_TC2XC2S_TIOA0 (2 << 4) -#define ATMEL_TC_TC2XC2S_TIOA1 (3 << 4) - - -/* - * Each TC block has three "channels", each with one counter and controls. - * - * Note that the semantics of ATMEL_TC_TIMER_CLOCKx (input clock selection - * when it's not "external") is silicon-specific. AT91 platforms use one - * set of definitions; AVR32 platforms use a different set. Don't hard-wire - * such knowledge into your code, use the global "atmel_tc_divisors" ... - * where index N is the divisor for clock N+1, else zero to indicate it uses - * the 32 KiHz clock. - * - * The timers can be chained in various ways, and operated in "waveform" - * generation mode (including PWM) or "capture" mode (to time events). In - * both modes, behavior can be configured in many ways. - * - * Each timer has two I/O pins, TIOA and TIOB. Waveform mode uses TIOA as a - * PWM output, and TIOB as either another PWM or as a trigger. Capture mode - * uses them only as inputs. - */ -#define ATMEL_TC_CHAN(idx) ((idx)*0x40) -#define ATMEL_TC_REG(idx, reg) (ATMEL_TC_CHAN(idx) + ATMEL_TC_ ## reg) - -#define ATMEL_TC_CCR 0x00 /* Channel Control Register */ -#define ATMEL_TC_CLKEN (1 << 0) /* clock enable */ -#define ATMEL_TC_CLKDIS (1 << 1) /* clock disable */ -#define ATMEL_TC_SWTRG (1 << 2) /* software trigger */ - -#define ATMEL_TC_CMR 0x04 /* Channel Mode Register */ - -/* Both modes share some CMR bits */ -#define ATMEL_TC_TCCLKS (7 << 0) /* clock source */ -#define ATMEL_TC_TIMER_CLOCK1 (0 << 0) -#define ATMEL_TC_TIMER_CLOCK2 (1 << 0) -#define ATMEL_TC_TIMER_CLOCK3 (2 << 0) -#define ATMEL_TC_TIMER_CLOCK4 (3 << 0) -#define ATMEL_TC_TIMER_CLOCK5 (4 << 0) -#define ATMEL_TC_XC0 (5 << 0) -#define ATMEL_TC_XC1 (6 << 0) -#define ATMEL_TC_XC2 (7 << 0) -#define ATMEL_TC_CLKI (1 << 3) /* clock invert */ -#define ATMEL_TC_BURST (3 << 4) /* clock gating */ -#define ATMEL_TC_GATE_NONE (0 << 4) -#define ATMEL_TC_GATE_XC0 (1 << 4) -#define ATMEL_TC_GATE_XC1 (2 << 4) -#define ATMEL_TC_GATE_XC2 (3 << 4) -#define ATMEL_TC_WAVE (1 << 15) /* true = Waveform mode */ - -/* CAPTURE mode CMR bits */ -#define ATMEL_TC_LDBSTOP (1 << 6) /* counter stops on RB load */ -#define ATMEL_TC_LDBDIS (1 << 7) /* counter disable on RB load */ -#define ATMEL_TC_ETRGEDG (3 << 8) /* external trigger edge */ -#define ATMEL_TC_ETRGEDG_NONE (0 << 8) -#define ATMEL_TC_ETRGEDG_RISING (1 << 8) -#define ATMEL_TC_ETRGEDG_FALLING (2 << 8) -#define ATMEL_TC_ETRGEDG_BOTH (3 << 8) -#define ATMEL_TC_ABETRG (1 << 10) /* external trigger is TIOA? */ -#define ATMEL_TC_CPCTRG (1 << 14) /* RC compare trigger enable */ -#define ATMEL_TC_LDRA (3 << 16) /* RA loading edge (of TIOA) */ -#define ATMEL_TC_LDRA_NONE (0 << 16) -#define ATMEL_TC_LDRA_RISING (1 << 16) -#define ATMEL_TC_LDRA_FALLING (2 << 16) -#define ATMEL_TC_LDRA_BOTH (3 << 16) -#define ATMEL_TC_LDRB (3 << 18) /* RB loading edge (of TIOA) */ -#define ATMEL_TC_LDRB_NONE (0 << 18) -#define ATMEL_TC_LDRB_RISING (1 << 18) -#define ATMEL_TC_LDRB_FALLING (2 << 18) -#define ATMEL_TC_LDRB_BOTH (3 << 18) - -/* WAVEFORM mode CMR bits */ -#define ATMEL_TC_CPCSTOP (1 << 6) /* RC compare stops counter */ -#define ATMEL_TC_CPCDIS (1 << 7) /* RC compare disables counter */ -#define ATMEL_TC_EEVTEDG (3 << 8) /* external event edge */ -#define ATMEL_TC_EEVTEDG_NONE (0 << 8) -#define ATMEL_TC_EEVTEDG_RISING (1 << 8) -#define ATMEL_TC_EEVTEDG_FALLING (2 << 8) -#define ATMEL_TC_EEVTEDG_BOTH (3 << 8) -#define ATMEL_TC_EEVT (3 << 10) /* external event source */ -#define ATMEL_TC_EEVT_TIOB (0 << 10) -#define ATMEL_TC_EEVT_XC0 (1 << 10) -#define ATMEL_TC_EEVT_XC1 (2 << 10) -#define ATMEL_TC_EEVT_XC2 (3 << 10) -#define ATMEL_TC_ENETRG (1 << 12) /* external event is trigger */ -#define ATMEL_TC_WAVESEL (3 << 13) /* waveform type */ -#define ATMEL_TC_WAVESEL_UP (0 << 13) -#define ATMEL_TC_WAVESEL_UPDOWN (1 << 13) -#define ATMEL_TC_WAVESEL_UP_AUTO (2 << 13) -#define ATMEL_TC_WAVESEL_UPDOWN_AUTO (3 << 13) -#define ATMEL_TC_ACPA (3 << 16) /* RA compare changes TIOA */ -#define ATMEL_TC_ACPA_NONE (0 << 16) -#define ATMEL_TC_ACPA_SET (1 << 16) -#define ATMEL_TC_ACPA_CLEAR (2 << 16) -#define ATMEL_TC_ACPA_TOGGLE (3 << 16) -#define ATMEL_TC_ACPC (3 << 18) /* RC compare changes TIOA */ -#define ATMEL_TC_ACPC_NONE (0 << 18) -#define ATMEL_TC_ACPC_SET (1 << 18) -#define ATMEL_TC_ACPC_CLEAR (2 << 18) -#define ATMEL_TC_ACPC_TOGGLE (3 << 18) -#define ATMEL_TC_AEEVT (3 << 20) /* external event changes TIOA */ -#define ATMEL_TC_AEEVT_NONE (0 << 20) -#define ATMEL_TC_AEEVT_SET (1 << 20) -#define ATMEL_TC_AEEVT_CLEAR (2 << 20) -#define ATMEL_TC_AEEVT_TOGGLE (3 << 20) -#define ATMEL_TC_ASWTRG (3 << 22) /* software trigger changes TIOA */ -#define ATMEL_TC_ASWTRG_NONE (0 << 22) -#define ATMEL_TC_ASWTRG_SET (1 << 22) -#define ATMEL_TC_ASWTRG_CLEAR (2 << 22) -#define ATMEL_TC_ASWTRG_TOGGLE (3 << 22) -#define ATMEL_TC_BCPB (3 << 24) /* RB compare changes TIOB */ -#define ATMEL_TC_BCPB_NONE (0 << 24) -#define ATMEL_TC_BCPB_SET (1 << 24) -#define ATMEL_TC_BCPB_CLEAR (2 << 24) -#define ATMEL_TC_BCPB_TOGGLE (3 << 24) -#define ATMEL_TC_BCPC (3 << 26) /* RC compare changes TIOB */ -#define ATMEL_TC_BCPC_NONE (0 << 26) -#define ATMEL_TC_BCPC_SET (1 << 26) -#define ATMEL_TC_BCPC_CLEAR (2 << 26) -#define ATMEL_TC_BCPC_TOGGLE (3 << 26) -#define ATMEL_TC_BEEVT (3 << 28) /* external event changes TIOB */ -#define ATMEL_TC_BEEVT_NONE (0 << 28) -#define ATMEL_TC_BEEVT_SET (1 << 28) -#define ATMEL_TC_BEEVT_CLEAR (2 << 28) -#define ATMEL_TC_BEEVT_TOGGLE (3 << 28) -#define ATMEL_TC_BSWTRG (3 << 30) /* software trigger changes TIOB */ -#define ATMEL_TC_BSWTRG_NONE (0 << 30) -#define ATMEL_TC_BSWTRG_SET (1 << 30) -#define ATMEL_TC_BSWTRG_CLEAR (2 << 30) -#define ATMEL_TC_BSWTRG_TOGGLE (3 << 30) - -#define ATMEL_TC_CV 0x10 /* counter Value */ -#define ATMEL_TC_RA 0x14 /* register A */ -#define ATMEL_TC_RB 0x18 /* register B */ -#define ATMEL_TC_RC 0x1c /* register C */ - -#define ATMEL_TC_SR 0x20 /* status (read-only) */ -/* Status-only flags */ -#define ATMEL_TC_CLKSTA (1 << 16) /* clock enabled */ -#define ATMEL_TC_MTIOA (1 << 17) /* TIOA mirror */ -#define ATMEL_TC_MTIOB (1 << 18) /* TIOB mirror */ - -#define ATMEL_TC_IER 0x24 /* interrupt enable (write-only) */ -#define ATMEL_TC_IDR 0x28 /* interrupt disable (write-only) */ -#define ATMEL_TC_IMR 0x2c /* interrupt mask (read-only) */ - -/* Status and IRQ flags */ -#define ATMEL_TC_COVFS (1 << 0) /* counter overflow */ -#define ATMEL_TC_LOVRS (1 << 1) /* load overrun */ -#define ATMEL_TC_CPAS (1 << 2) /* RA compare */ -#define ATMEL_TC_CPBS (1 << 3) /* RB compare */ -#define ATMEL_TC_CPCS (1 << 4) /* RC compare */ -#define ATMEL_TC_LDRAS (1 << 5) /* RA loading */ -#define ATMEL_TC_LDRBS (1 << 6) /* RB loading */ -#define ATMEL_TC_ETRGS (1 << 7) /* external trigger */ -#define ATMEL_TC_ALL_IRQ (ATMEL_TC_COVFS | ATMEL_TC_LOVRS | \ - ATMEL_TC_CPAS | ATMEL_TC_CPBS | \ - ATMEL_TC_CPCS | ATMEL_TC_LDRAS | \ - ATMEL_TC_LDRBS | ATMEL_TC_ETRGS) \ - /* all IRQs */ - -#endif |