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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 14:34:32 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 14:34:32 -0400
commit10c8e0562057b5d64ea170feab148e1550420030 (patch)
treecfd387208c85e893c93d24e324d147eb6e9abfc9 /include
parentd4e1f5a14e17d4f0e8034c0967511884bcb12fba (diff)
parent3e528cb7bae00ba0d73def6645d0f2fa906ee3e8 (diff)
Merge tag 'drivers-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver changes from Olof Johansson: "A handful of driver-related changes. We've had a bunch of them going in through other branches as well, so it's only a part of what we really have this release. Larger pieces are: - Removal of a now unused PWM driver for atmel [ This includes AVR32 changes that have been appropriately acked ] - Performance counter support for the arm CCN interconnect - OMAP mailbox driver cleanups and consolidation - PCI and SATA PHY drivers for SPEAr 13xx platforms - Redefinition (with backwards compatibility!) of PCI DT bindings for Tegra to better model regulators/power" Note: this merge also fixes up the semantic conflict with the new calling convention for devm_phy_create(), see commit f0ed817638b5 ("phy: core: Let node ptr of PHY point to PHY and not of PHY provider") that came in through Greg's USB tree. Semantic merge patch by Stephen Rothwell <sfr@canb.auug.org.au> through the next tree. * tag 'drivers-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits) bus: arm-ccn: Fix error handling at event allocation mailbox/omap: add a parent structure for every IP instance mailbox/omap: remove the private mailbox structure mailbox/omap: consolidate OMAP mailbox driver mailbox/omap: simplify the fifo assignment by using macros mailbox/omap: remove omap_mbox_type_t from mailbox ops mailbox/omap: remove OMAP1 mailbox driver mailbox/omap: use devm_* interfaces bus: ARM CCN: add PERF_EVENTS dependency bus: ARM CCN PMU driver PCI: spear: Remove spear13xx_pcie_remove() PCI: spear: Fix Section mismatch compilation warning for probe() ARM: tegra: Remove legacy PCIe power supply properties PCI: tegra: Remove deprecated power supply properties PCI: tegra: Implement accurate power supply scheme ARM: SPEAr13xx: Update defconfigs ARM: SPEAr13xx: Add pcie and miphy DT nodes ARM: SPEAr13xx: Add bindings and dt node for misc block ARM: SPEAr13xx: Fix static mapping table phy: Add drivers for PCIe and SATA phy on SPEAr13xx ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/atmel-pwm-bl.h43
-rw-r--r--include/linux/atmel_pwm.h70
2 files changed, 0 insertions, 113 deletions
diff --git a/include/linux/atmel-pwm-bl.h b/include/linux/atmel-pwm-bl.h
deleted file mode 100644
index 0153a47806c2..000000000000
--- a/include/linux/atmel-pwm-bl.h
+++ /dev/null
@@ -1,43 +0,0 @@
1/*
2 * Copyright (C) 2007 Atmel Corporation
3 *
4 * Driver for the AT32AP700X PS/2 controller (PSIF).
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
9 */
10
11#ifndef __INCLUDE_ATMEL_PWM_BL_H
12#define __INCLUDE_ATMEL_PWM_BL_H
13
14/**
15 * struct atmel_pwm_bl_platform_data
16 * @pwm_channel: which PWM channel in the PWM module to use.
17 * @pwm_frequency: PWM frequency to generate, the driver will try to be as
18 * close as the prescaler allows.
19 * @pwm_compare_max: value to use in the PWM channel compare register.
20 * @pwm_duty_max: maximum duty cycle value, must be less than or equal to
21 * pwm_compare_max.
22 * @pwm_duty_min: minimum duty cycle value, must be less than pwm_duty_max.
23 * @pwm_active_low: set to one if the low part of the PWM signal increases the
24 * brightness of the backlight.
25 * @gpio_on: GPIO line to control the backlight on/off, set to -1 if not used.
26 * @on_active_low: set to one if the on/off signal is on when GPIO is low.
27 *
28 * This struct must be added to the platform device in the board code. It is
29 * used by the atmel-pwm-bl driver to setup the GPIO to control on/off and the
30 * PWM device.
31 */
32struct atmel_pwm_bl_platform_data {
33 unsigned int pwm_channel;
34 unsigned int pwm_frequency;
35 unsigned int pwm_compare_max;
36 unsigned int pwm_duty_max;
37 unsigned int pwm_duty_min;
38 unsigned int pwm_active_low;
39 int gpio_on;
40 unsigned int on_active_low;
41};
42
43#endif /* __INCLUDE_ATMEL_PWM_BL_H */
diff --git a/include/linux/atmel_pwm.h b/include/linux/atmel_pwm.h
deleted file mode 100644
index ea04abb3db8e..000000000000
--- a/include/linux/atmel_pwm.h
+++ /dev/null
@@ -1,70 +0,0 @@
1#ifndef __LINUX_ATMEL_PWM_H
2#define __LINUX_ATMEL_PWM_H
3
4/**
5 * struct pwm_channel - driver handle to a PWM channel
6 * @regs: base of this channel's registers
7 * @index: number of this channel (0..31)
8 * @mck: base clock rate, which can be prescaled and maybe subdivided
9 *
10 * Drivers initialize a pwm_channel structure using pwm_channel_alloc().
11 * Then they configure its clock rate (derived from MCK), alignment,
12 * polarity, and duty cycle by writing directly to the channel registers,
13 * before enabling the channel by calling pwm_channel_enable().
14 *
15 * After emitting a PWM signal for the desired length of time, drivers
16 * may then pwm_channel_disable() or pwm_channel_free(). Both of these
17 * disable the channel, but when it's freed the IRQ is deconfigured and
18 * the channel must later be re-allocated and reconfigured.
19 *
20 * Note that if the period or duty cycle need to be changed while the
21 * PWM channel is operating, drivers must use the PWM_CUPD double buffer
22 * mechanism, either polling until they change or getting implicitly
23 * notified through a once-per-period interrupt handler.
24 */
25struct pwm_channel {
26 void __iomem *regs;
27 unsigned index;
28 unsigned long mck;
29};
30
31extern int pwm_channel_alloc(int index, struct pwm_channel *ch);
32extern int pwm_channel_free(struct pwm_channel *ch);
33
34extern int pwm_clk_alloc(unsigned prescale, unsigned div);
35extern void pwm_clk_free(unsigned clk);
36
37extern int __pwm_channel_onoff(struct pwm_channel *ch, int enabled);
38
39#define pwm_channel_enable(ch) __pwm_channel_onoff((ch), 1)
40#define pwm_channel_disable(ch) __pwm_channel_onoff((ch), 0)
41
42/* periodic interrupts, mostly for CUPD changes to period or cycle */
43extern int pwm_channel_handler(struct pwm_channel *ch,
44 void (*handler)(struct pwm_channel *ch));
45
46/* per-channel registers (banked at pwm_channel->regs) */
47#define PWM_CMR 0x00 /* mode register */
48#define PWM_CPR_CPD (1 << 10) /* set: CUPD modifies period */
49#define PWM_CPR_CPOL (1 << 9) /* set: idle high */
50#define PWM_CPR_CALG (1 << 8) /* set: center align */
51#define PWM_CPR_CPRE (0xf << 0) /* mask: rate is mck/(2^pre) */
52#define PWM_CPR_CLKA (0xb << 0) /* rate CLKA */
53#define PWM_CPR_CLKB (0xc << 0) /* rate CLKB */
54#define PWM_CDTY 0x04 /* duty cycle (max of CPRD) */
55#define PWM_CPRD 0x08 /* period (count up from zero) */
56#define PWM_CCNT 0x0c /* counter (20 bits?) */
57#define PWM_CUPD 0x10 /* update CPRD (or CDTY) next period */
58
59static inline void
60pwm_channel_writel(struct pwm_channel *pwmc, unsigned offset, u32 val)
61{
62 __raw_writel(val, pwmc->regs + offset);
63}
64
65static inline u32 pwm_channel_readl(struct pwm_channel *pwmc, unsigned offset)
66{
67 return __raw_readl(pwmc->regs + offset);
68}
69
70#endif /* __LINUX_ATMEL_PWM_H */