lwn.git/drivers/mfd/rsmu_spi.c, branch docs-mw

mfd: rsmu: support I2C SMBus access

2024-05-10T14:39:18+00:00

8a3400x device implements its own reg_read and reg_write, which only supports I2C bus access. This patch adds support for SMBus access. Signed-off-by: Min Li Link: https://lore.kernel.org/r/LV3P220MB12021342F302AADEB6C1601CA0192@LV3P220MB1202.NAMP220.PROD.OUTLOOK.COM Signed-off-by: Lee Jones

mfd: rsmu_spi: Remove redundant of_match_ptr()

2023-08-22T07:07:50+00:00

The driver depends on CONFIG_OF, so it is not necessary to use of_match_ptr() here. We remove of_match_ptr() here. Signed-off-by: Zhu Wang Link: https://lore.kernel.org/r/20230808130023.202700-4-wangzhu9@huawei.com Signed-off-by: Lee Jones

mfd: rsmu: Support 32-bit address space

2023-04-26T10:40:34+00:00

We used to assume 0x2010xxxx address. Now that we need to access 0x2011xxxx address, we need to support read/write the whole 32-bit address space. Also defined RSMU_MAX_WRITE_COUNT and RSMU_MAX_READ_COUNT for readability Signed-off-by: Min Li Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/MW5PR03MB693295AF31ABCAF6AE52EE74A08B9@MW5PR03MB6932.namprd03.prod.outlook.com

mfd: rsmu_spi: Remove unneeded casts of void *

2023-04-26T10:40:32+00:00

There is no need to cast a "void *" to a different type of pointer. Signed-off-by: Geert Uytterhoeven Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/ae84c1751e79cb49ab584557f4ecd835a8493d7c.1678704562.git.geert+renesas@glider.be

spi: make remove callback a void function

2022-02-09T13:00:45+00:00

The value returned by an spi driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Signed-off-by: Uwe Kleine-König Acked-by: Marc Kleine-Budde Acked-by: Andy Shevchenko Reviewed-by: Geert Uytterhoeven Acked-by: Jérôme Pouiller Acked-by: Miquel Raynal Acked-by: Jonathan Cameron Acked-by: Claudius Heine Acked-by: Stefan Schmidt Acked-by: Alexandre Belloni Acked-by: Ulf Hansson # For MMC Acked-by: Marcus Folkesson Acked-by: Łukasz Stelmach Acked-by: Lee Jones Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown

mfd: Add Renesas Synchronization Management Unit (SMU) support

2021-07-13T11:20:44+00:00

Add support for ClockMatrix(TM) and 82P33xxx families of timing and synchronization devices. The access interface can be either SPI or I2C. Currently, it will create 2 types of MFD devices, which are to be used by the corresponding rsmu character device driver and the PTP hardware clock driver, respectively. Signed-off-by: Min Li Signed-off-by: Lee Jones