wireguard-linux/drivers/base/regmap/regmap.c, branch update-toolchain

regmap: Implement regmap_multi_reg_read()

2024-07-10T22:05:45Z

Merge series from Guenter Roeck : regmap_multi_reg_read() is similar to regmap_bilk_read() but reads from an array of non-sequential registers. It is helpful if multiple non- sequential registers need to be read in a single operation which would otherwise have to be mutex protected. The name of the new function was chosen to match the existing function regmap_multi_reg_write().

regmap: Implement regmap_multi_reg_read()

2024-07-10T17:45:34Z

regmap_multi_reg_read() is similar to regmap_bilk_read() but reads from an array of non-sequential registers. Signed-off-by: Guenter Roeck Link: https://lore.kernel.org/r/20240710015622.1960522-2-linux@roeck-us.net Signed-off-by: Mark Brown

regmap: Switch to use kmemdup_array()

2024-06-07T13:28:21Z

Let the kememdup_array() take care about multiplication and possible overflows. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240606164717.3031107-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown

regmap: Add regmap_read_bypassed()

2024-04-08T13:09:58Z

Add a regmap_read_bypassed() to allow reads from the hardware registers while the regmap is in cache-only mode. A typical use for this is to keep the cache in cache-only mode until the hardware has reached a valid state, but one or more status registers must be polled to determine when this state is reached. For example, firmware download on the cs35l56 can take several seconds if there are multiple amps sharing limited bus bandwidth. This is too long to block in probe() so it is done as a background task. The device must be soft-reset to reboot the firmware and during this time the registers are not accessible, so the cache should be in cache-only. But the driver must poll a register to detect when reboot has completed. Signed-off-by: Richard Fitzgerald Fixes: 8a731fd37f8b ("ASoC: cs35l56: Move utility functions to shared file") Link: https://msgid.link/r/20240408101803.43183-2-rf@opensource.cirrus.com Signed-off-by: Mark Brown

regmap: rework ->max_register handling

2024-02-05T14:32:35Z

When regmap consists of single register, 'regmap' subsystem is unable to understand whether ->max_register is set or not, because in both cases it is equal to zero. It leads to that the logic based on value of ->max_register doesn't work. For example using of REGCACHE_FLAT fails. This patch introduces an extra parameter to regmap config, indicating that zero value in ->max_register is authentic. Signed-off-by: Jan Dakinevich Link: https://lore.kernel.org/r/20240126200836.1829995-1-jan.dakinevich@salutedevices.com Signed-off-by: Mark Brown

regmap: fix regmap_noinc_write() description

2023-11-21T23:20:39Z

Change "Write data from" -> "Write data to". Signed-off-by: Hugo Villeneuve Link: https://lore.kernel.org/r/20231121230900.3754785-1-hugo@hugovil.com Signed-off-by: Mark Brown

Merge tag 'regmap-fix-v6.7-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

2023-11-08T00:56:10Z

Pull regmap fix from Mark Brown: "One fix here, for an interaction between noinc registers and caches. If a device uses noinc registers (which is rare) then we could corrupt registers after the noinc register in the cache" * tag 'regmap-fix-v6.7-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: prevent noinc writes from clobbering cache

regmap: prevent noinc writes from clobbering cache

2023-11-01T20:22:55Z

Currently, noinc writes are cached as if they were standard incrementing writes, overwriting unrelated register values in the cache. Instead, we want to cache the last value written to the register, as is done in the accelerated noinc handler (regmap_noinc_readwrite). Fixes: cdf6b11daa77 ("regmap: Add regmap_noinc_write API") Signed-off-by: Ben Wolsieffer Link: https://lore.kernel.org/r/20231101142926.2722603-2-ben.wolsieffer@hefring.com Signed-off-by: Mark Brown

regmap: fix NULL deref on lookup

2023-10-09T12:13:53Z

Not all regmaps have a name so make sure to check for that to avoid dereferencing a NULL pointer when dev_get_regmap() is used to lookup a named regmap. Fixes: e84861fec32d ("regmap: dev_get_regmap_match(): fix string comparison") Cc: stable@vger.kernel.org # 5.8 Cc: Marc Kleine-Budde Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20231006082104.16707-1-johan+linaro@kernel.org Signed-off-by: Mark Brown

regmap: Merge up fixes from mainline

2023-07-23T22:34:06Z

There's several things here that will really help my CI.