linux-toradex.git/drivers/pinctrl, branch v4.13-rc2

Merge tag 'pinctrl-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2017-07-06T18:38:59+00:00

Pull pin control updates from Linus Walleij:
"This is the big bulk of pin control changes for the v4.13 series:

Core:
- The documentation is moved over to RST.
- We now have agreed bindings for enabling input and output buffers
without actually enabling input and/or output on a pin. We are
chiseling out some details of pin control electronics.

New drivers:
- ZTE ZX
- Renesas RZA1
- MIPS Ingenic JZ47xx: also switch over existing drivers in the tree
to use this pin controller and consolidate earlier spread out code.
- Microschip MCP23S08: this driver is migrated from the GPIO
subsystem and totally rewritten to use proper pin control. All
users are switched over.

New subdrivers:
- Renesas R8A7743 and R8A7745.
- Allwinner Sunxi A83T R_PIO.
- Marvell MVEBU Armada CP110 and AP806.
- Intel Cannon Lake PCH.
- Qualcomm IPQ8074.

Notable improvements:
- IRQ support on the Marvell MVEBU Armada 37xx.
- Meson driver supports HDMI CEC, AO, I2S, SPDIF and PWM.
- Rockchip driver now supports iomux-route switching for RK3228,
RK3328 and RK3399.
- Rockchip A10 and A20 are merged into a single driver.
- STM32 has improved GPIO support.
- Samsung Exynos drivers are split per ARMv7 and ARMv8.
- Marvell MVEBU is converted to use regmap for register access.

Maintenance:
- Several Renesas SH-PFC refactorings and updates.
- Serious code size cut for Mediatek MT7623.
- Misc janitorial and MAINTAINERS fixes"

* tag 'pinctrl-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (137 commits)
pinctrl: samsung: Remove bogus irq_[un]mask from resource management
pinctrl: rza1: make structures rza1_gpiochip_template and rza1_pinmux_ops static
pinctrl: rza1: Remove unneeded wrong check for wrong variable
pinctrl: qcom: Add ipq8074 pinctrl driver
pinctrl: freescale: imx7d: make of_device_ids const.
pinctrl: DT: extend the pinmux property to support integers array
pinctrl: generic: Add output-enable property
pinctrl: armada-37xx: Fix number of pin in sdio_sb
pinctrl: armada-37xx: Fix uart2 group selection register mask
pinctrl: bcm2835: Avoid warning from __irq_do_set_handler
pinctrl: sh-pfc: r8a7795: Add PWM support
MAINTAINERS: Add Qualcomm pinctrl drivers section
arm: dts: dt-bindings: Add Renesas RZ/A1 pinctrl header
dt-bindings: pinctrl: Add RZ/A1 bindings doc
pinctrl: Renesas RZ/A1 pin and gpio controller
pinctrl: sh-pfc: r8a7792: Add SCIF1 and SCIF2 pin groups
pinctrl.txt: move it to the driver-api book
pinctrl: ingenic: checking for NULL instead of IS_ERR()
pinctrl: uniphier: fix WARN_ON() of pingroups dump on LD20
pinctrl: uniphier: fix WARN_ON() of pingroups dump on LD11
...

pinctrl: samsung: Remove bogus irq_[un]mask from resource management

2017-06-30T13:51:42+00:00

The irq chip callbacks irq_request/release_resources() have absolutely no
business with masking and unmasking the irq.

The core code unmasks the interrupt after complete setup and masks it
before invoking irq_release_resources().

The unmask is actually harmful as it happens before the interrupt is
completely initialized in __setup_irq().

Remove it.

Fixes: f6a8249f9e55 ("pinctrl: exynos: Lock GPIOs as interrupts when used as EINTs")
Signed-off-by: Thomas Gleixner 
Cc: Krzysztof Kozlowski 
Cc: Sylwester Nawrocki 
Cc: Linus Walleij 
Cc: Kukjin Kim 
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Acked-by: Tomasz Figa 
Signed-off-by: Linus Walleij

pinctrl: rza1: make structures rza1_gpiochip_template and rza1_pinmux_ops static

2017-06-30T13:48:45+00:00

structures rza1_gpiochip_template and rza1_pinmux_ops do not need to be
in global scope, so make them static.

Cleans up sparse warnings:
symbol 'rza1_gpiochip_template' was not declared. Should it be static?
symbol 'rza1_pinmux_ops' was not declared. Should it be static?

Signed-off-by: Colin Ian King 
Signed-off-by: Linus Walleij

pinctrl: rza1: Remove unneeded wrong check for wrong variable

2017-06-30T13:46:38+00:00

Depending on compiler version:

    drivers/pinctrl/pinctrl-rza1.c: In function ‘rza1_pinctrl_probe’:
    drivers/pinctrl/pinctrl-rza1.c:1260:5: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized]
      if (ret)
	 ^

Indeed, the result returned by platform_get_resource() was stored in
"res", not "ret".  In addition, the correct error check would be
"if (!res)", as platform_get_resource() does not return an error code,
but returns NULL on failure.

However, as devm_ioremap_resource() verifies the validity of the passed
resource pointer anyway, the check can just be removed.

Reported-by: Stephen Rothwell 
Fixes: 5a49b644b3075f88 ("pinctrl: Renesas RZ/A1 pin and gpio controller")
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Linus Walleij

pinctrl: qcom: Add ipq8074 pinctrl driver

2017-06-29T13:12:40+00:00

Add initial pinctrl driver to support pin configuration with
pinctrl framework for ipq8074.

Signed-off-by: Manoharan Vijaya Raghavan 
Signed-off-by: Varadarajan Narayanan 
Acked-by: Rob Herring 
Acked-by: Bjorn Andersson 
Signed-off-by: Linus Walleij

Merge tag 'sh-pfc-for-v4.13-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

2017-06-29T13:05:51+00:00

pinctrl: sh-pfc: Updates for v4.13 (take two)

  - Add SCIF1 and SCIF2 pin groups for R-Car V2H,
  - Add EtherAVB, DU parallel RGB output, and PWM pin groups for R-Car
    H3 ES2.0,
  - Add pin and gpio controller support for RZ/A1.

Revert "pinctrl: rockchip: avoid hardirq-unsafe functions in irq_chip"

2017-06-29T13:03:24+00:00

This reverts commit 88bb94216f59e10802aaf78c858a4146085faf18.

It introduced a new CONFIG_DEBUG_ATOMIC_SLEEP warning in v4.12-rc1:

[ 7226.716713] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:238
[ 7226.716716] in_atomic(): 0, irqs_disabled(): 0, pid: 1708, name: bash
[ 7226.716722] CPU: 1 PID: 1708 Comm: bash Not tainted 4.12.0-rc6+ #1213
[ 7226.716724] Hardware name: Google Kevin (DT)
[ 7226.716726] Call trace:
[ 7226.716738] [] dump_backtrace+0x0/0x24c
[ 7226.716743] [] show_stack+0x20/0x28
[ 7226.716749] [] dump_stack+0x90/0xb0
[ 7226.716755] [] ___might_sleep+0x10c/0x124
[ 7226.716760] [] __might_sleep+0x78/0x88
[ 7226.716765] [] mutex_lock+0x2c/0x64
[ 7226.716771] [] rockchip_irq_bus_lock+0x30/0x3c
[ 7226.716777] [] __irq_get_desc_lock+0x78/0x98
[ 7226.716782] [] irq_set_irq_wake+0x44/0x12c
[ 7226.716787] [] dev_pm_arm_wake_irq+0x4c/0x58
[ 7226.716792] [] device_wakeup_arm_wake_irqs+0x3c/0x58
[ 7226.716796] [] dpm_suspend_noirq+0xf8/0x3a0
[ 7226.716800] [] suspend_devices_and_enter+0x1a4/0x9a8
[ 7226.716803] [] pm_suspend+0x664/0x6a4
[ 7226.716807] [] state_store+0xd4/0xf8
...

It was reported on -rc1, and it's still not fixed in -rc6, so it should
just be reverted.

Cc: John Keeping 
Signed-off-by: Brian Norris 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Linus Walleij

pinctrl: freescale: imx7d: make of_device_ids const.

2017-06-29T12:56:36+00:00

of_device_ids are not supposed to change at runtime. All functions
working with of_device_ids provided by  work with const
of_device_ids. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav 
Signed-off-by: Linus Walleij

pinctrl: generic: Add output-enable property

2017-06-29T12:30:49+00:00

Add output-enable generic pin configuration property.
This properties allows enabling/disabling pin's output capabilities
without actually driving any value on the line.

Acked-by: Rob Herring 
[Added inline elaborations on buffer enabling/disabling]
Signed-off-by: Linus Walleij

Merge tag 'v4.12-rc7' into devel

2017-06-29T12:27:39+00:00

Linux 4.12-rc7