kernel/git/stable/linux.git/drivers/mfd/intel-lpss.c, branch linux-5.2.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

2019-05-17T02:05:35+00:00

Pull more clk framework updates from Stephen Boyd: "One more patch to remove io.h from clk-provider.h. We used to need this include when we had clk_readl() and clk_writel(), but those are gone now so this patch pushes the dependency out to the users of clk-provider.h" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: Remove io.h from clk-provider.h

clk: Remove io.h from clk-provider.h

2019-05-15T20:21:37+00:00

Now that we've gotten rid of clk_readl() we can remove io.h from the clk-provider header and push out the io.h include to any code that isn't already including the io.h header but using things like readl/writel, etc. Found with this grep: git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \ xargs git grep -l \ -e '\<__iowrite32_copy\>' --or \ -e '\<__ioread32_copy\>' --or \ -e '\<__iowrite64_copy\>' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\<__devm_memremap_pages\>' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\<__io_aw\>' --or \ -e '\<__io_pbw\>' --or \ -e '\<__io_paw\>' --or \ -e '\<__io_pbr\>' --or \ -e '\<__io_par\>' --or \ -e '\<__raw_readb\>' --or \ -e '\<__raw_readw\>' --or \ -e '\<__raw_readl\>' --or \ -e '\<__raw_readq\>' --or \ -e '\<__raw_writeb\>' --or \ -e '\<__raw_writew\>' --or \ -e '\<__raw_writel\>' --or \ -e '\<__raw_writeq\>' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\<__io_virt\>' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\<__ioremap\>' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' --or \ -e '\' I also reordered a couple includes when they weren't alphabetical and removed clk.h from kona, replacing it with clk-provider.h because that driver doesn't use clk consumer APIs. Acked-by: Geert Uytterhoeven Cc: Chen-Yu Tsai Acked-by: Maxime Ripard Acked-by: Tero Kristo Acked-by: Sekhar Nori Cc: Krzysztof Kozlowski Acked-by: Mark Brown Cc: Chris Zankel Acked-by: Max Filippov Acked-by: John Crispin Acked-by: Heiko Stuebner Signed-off-by: Stephen Boyd

Merge tag 'mfd-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2019-05-14T17:39:08+00:00

Pull MFD updates from Lee Jones: "Core Framework: - Document (kerneldoc) core mfd_add_devices() API New Drivers: - Altera SOCFPGA System Manager - Maxim MAX77650/77651 PMIC - Maxim MAX77663 PMIC - ST Multi-Function eXpander (STMFX) New Device Support: - LEDs support in Intel Cherry Trail Whiskey Cove PMIC - RTC support in SAMSUNG Electronics S2MPA01 PMIC - SAM9X60 support in Atmel HLCDC (High-end LCD Controller) - USB X-Powers AXP 8xx PMICs - Integrated Sensor Hub (ISH) in ChromeOS EC - USB PD Logger in ChromeOS EC - AXP223 in X-Powers AXP series PMICs - Power Supply in X-Powers AXP 803 PMICs - Comet Lake in Intel Low Power Subsystem - Fingerprint MCU in ChromeOS EC - Touchpad MCU in ChromeOS EC - Move TI LM3532 support to LED New Functionality: - max77650, max77620: Add/extend DT support - max77620 power-off - syscon clocking - croc_ec host sleep event Fix-ups: - Trivial; Formatting, spelling, etc; Kconfig, sec-core, ab8500-debugfs - Remove unused functionality; rk808, da9063-* - SPDX conversion; da9063-*, atmel-*, - Adapt/add new register definitions; cs47l35-tables, cs47l90-tables, imx6q-iomuxc-gpr - Fix-up DT bindings; ti-lmu, cirrus,lochnagar - Simply obtaining driver data; ssbi, t7l66xb, tc6387xb, tc6393xb Bug Fixes: - Fix incorrect defined values; max77620, da9063 - Fix device initialisation; twl6040 - Reset device on init; intel-lpss - Fix build warnings when !OF; sun6i-prcm - Register OF match tables; tps65912-spi - Fix DMI matching; intel_quark_i2c_gpio" * tag 'mfd-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (65 commits) mfd: Use dev_get_drvdata() directly mfd: cros_ec: Instantiate properly CrOS Touchpad MCU device mfd: cros_ec: Instantiate properly CrOS FP MCU device mfd: cros_ec: Update the EC feature codes mfd: intel-lpss: Add Intel Comet Lake PCI IDs mfd: lochnagar: Add links to binding docs for sound and hwmon mfd: ab8500-debugfs: Fix a typo ("deubgfs") mfd: imx6sx: Add MQS register definition for iomuxc gpr dt-bindings: mfd: LMU: Fix lm3632 dt binding example mfd: intel_quark_i2c_gpio: Adjust IOT2000 matching mfd: da9063: Fix OTP control register names to match datasheets for DA9063/63L mfd: tps65912-spi: Add missing of table registration mfd: axp20x: Add USB power supply mfd cell to AXP803 mfd: sun6i-prcm: Fix build warning for non-OF configurations mfd: intel-lpss: Set the device in reset state when init platform/chrome: Add support for v1 of host sleep event mfd: cros_ec: Add host_sleep_event_v1 command mfd: cros_ec: Instantiate the CrOS USB PD logger driver mfd: cs47l90: Make DAC_AEC_CONTROL_2 readable mfd: cs47l35: Make DAC_AEC_CONTROL_2 readable ...

mfd: intel-lpss: Set the device in reset state when init

2019-05-14T07:13:27+00:00

In virtualized setup, when system reboots due to warm reset interrupt storm is seen. Call Trace: dump_stack+0x70/0xa5 __report_bad_irq+0x2e/0xc0 note_interrupt+0x248/0x290 ? add_interrupt_randomness+0x30/0x220 handle_irq_event_percpu+0x54/0x80 handle_irq_event+0x39/0x60 handle_fasteoi_irq+0x91/0x150 handle_irq+0x108/0x180 do_IRQ+0x52/0xf0 common_interrupt+0xf/0xf RIP: 0033:0x76fc2cfabc1d Code: 24 28 bf 03 00 00 00 31 c0 48 8d 35 63 77 0e 00 48 8d 15 2e 94 0e 00 4c 89 f9 49 89 d9 4c 89 d3 e8 b8 e2 01 00 48 8b 54 24 18 <48> 89 ef 48 89 de 4c 89 e1 e8 d5 97 01 00 84 c0 74 2d 48 8b 04 24 RSP: 002b:00007ffd247c1fc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffda RAX: 0000000000000000 RBX: 00007ffd247c1ff0 RCX: 000000000003d3ce RDX: 0000000000000000 RSI: 00007ffd247c1ff0 RDI: 000076fc2cbb6010 RBP: 000076fc2cded010 R08: 00007ffd247c2210 R09: 00007ffd247c22a0 R10: 000076fc29465470 R11: 0000000000000000 R12: 00007ffd247c1fc0 R13: 000076fc2ce8e470 R14: 000076fc27ec9960 R15: 0000000000000414 handlers: [<000000000d3fa913>] idma64_irq Disabling IRQ #27 To avoid interrupt storm, set the device in reset state before bringing out the device from reset state. Changelog v2: - correct the subject line by adding "mfd: " Signed-off-by: Binbin Wu Acked-by: Mika Westerberg Reviewed-by: Andy Shevchenko Signed-off-by: Lee Jones

dmaengine: idma64: Move driver name to the header

2019-04-26T11:25:23+00:00

There are two drivers that are relying on the iDMA 64-bit driver name to match. Instead of duplicating string in both of them, dedicate a header file and share it between users. Signed-off-by: Andy Shevchenko Signed-off-by: Vinod Koul

mfd: intel-lpss: Correct names of RESETS register bits

2018-06-04T05:48:22+00:00

According to documentation the function has 2 bits for reset while iDMA 64-bit has only one. Rename it accordingly. Note, there is no functional change since we always handle them together. Signed-off-by: Andy Shevchenko Acked-by: Mika Westerberg Signed-off-by: Lee Jones

mfd: intel-lpss: Program REMAP register in PIO mode

2018-05-29T08:11:22+00:00

According to documentation REMAP register has to be programmed in either DMA or PIO mode of the slice. Move the DMA capability check below to let REMAP register be programmed in PIO mode. Cc: stable@vger.kernel.org # 4.3+ Fixes: 4b45efe85263 ("mfd: Add support for Intel Sunrisepoint LPSS devices") Signed-off-by: Andy Shevchenko Signed-off-by: Lee Jones

PM / mfd: intel-lpss: Use DPM_FLAG_SMART_SUSPEND

2018-01-09T23:48:25+00:00

Make the intel-lpss driver set DPM_FLAG_SMART_SUSPEND for its devices which will allow them to stay in runtime suspend during system suspend unless they need to be reconfigured for some reason. Also make it avoid resuming its child devices if they have DPM_FLAG_SMART_SUSPEND set to allow them to remain in runtime suspend during system suspend. Signed-off-by: Rafael J. Wysocki Acked-for-MFD-by: Lee Jones Tested-by: Jarkko Nikula

mfd: intel-lpss: Put I2C and SPI controllers into reset state on suspend

2017-09-05T07:46:01+00:00

Commit 274e43edcda6f ("mfd: intel-lpss: Do not put device in reset state on suspend") changed the behavior on suspend by not putting LPSS controllers into reset. This was done because S3/S0ix fail if UART device is put into reset and no_console_suspend flag is enabled. Because of the above change, I2C controller gets into a bad state if it observes that the I2C lines are pulled low when power to I2C device is cut off during suspend (generally, I2C lines are pulled to power rail of the I2C device in order to ensure that there is no leakage because of the pulls when device is turned off). This results in the controller timing out for all future I2C operations after resume. It is primarily because of the following sequence of operations: During suspend: 1. I2C controller is disabled, but it is not put into reset. 2. Power to I2C device is cut off. 3. #2 results in the I2C lines being pulled low. ==> At this point the I2C controller gets into a bad state On resume: 1. Power to I2C device is enabled. 2. #2 results in the I2C lines being pulled high. 3. I2C controller is enabled. However, even after enabling the I2C controller, all future I2C xfers fail since the controller is in a bad state and does not attempt to make any transactions and hence times out. In order to ensure that the controller does not get into a bad state, this change puts it into reset if the controller type is not UART. With this change, the order of operations is: During suspend: 1. I2C controller is disabled and put into reset. 2. Power to I2C device is cut off. 3. #2 results in the I2C lines being pulled low. On resume: 1. Power to I2C device is enabled. 2. #2 results in the I2C lines being pulled high. 3. I2C controller is enabled and taken out of reset. Signed-off-by: Furquan Shaikh Signed-off-by: Lee Jones