linux/drivers/base/regmap/regmap.c, branch v6.3

regmap: apply reg_base and reg_downshift for single register ops

2023-01-31T12:14:48Z

reg_base and reg_downshift currently don't have any effect if used with a regmap_bus or regmap_config which only offers single register operations (ie. reg_read, reg_write and optionally reg_update_bits). Fix that and take them into account also for regmap_bus with only reg_read and read_write operations by applying reg_base and reg_downshift in _regmap_bus_reg_write, _regmap_bus_reg_read. Also apply reg_base and reg_downshift in _regmap_update_bits, but only in case the operation is carried out with a reg_update_bits call defined in either regmap_bus or regmap_config. Fixes: 0074f3f2b1e43d ("regmap: allow a defined reg_base to be added to every address") Fixes: 86fc59ef818beb ("regmap: add configurable downshift for addresses") Signed-off-by: Daniel Golle Tested-by: Colin Foster Link: https://lore.kernel.org/r/Y9clyVS3tQEHlUhA@makrotopia.org Signed-off-by: Mark Brown

regmap: add regmap_might_sleep()

2022-11-22T12:23:17Z

With the dawn of MMIO gpio-regmap users, it is desirable to let gpio-regmap ask the regmap if it might sleep during an access so it can pass that information to gpiochip. Add a new regmap_might_sleep() to query the regmap. Signed-off-by: Michael Walle Link: https://lore.kernel.org/r/20221121150843.1562603-1-michael@walle.cc Signed-off-by: Mark Brown

regmap: check right noinc bounds in debug print

2022-08-23T16:47:16Z

We were using the wrong bound in the debug prints: this needs to be the number of elements, not the number of bytes, since we're indexing into an element-size typed array. Fixes: c20cc099b30a ("regmap: Support accelerated noinc operations") Reported-by: Dan Carpenter Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20220823135700.265019-1-linus.walleij@linaro.org Signed-off-by: Mark Brown

regmap: introduce value tracing for regmap bulk operations

2022-08-23T12:04:55Z

Currently, only one-register io operations support tracepoints with value logging. For the regmap bulk operations developer can view hw_start/hw_done tracepoints with starting reg number and registers count to be reading or writing. This patch injects tracepoints with dumping registers values in the hex format to regmap bulk reading and writing. Signed-off-by: Dmitry Rokosov Link: https://lore.kernel.org/r/20220816181451.5628-1-ddrokosov@sberdevices.ru Signed-off-by: Mark Brown

regmap: Support accelerated noinc operations

2022-08-17T12:00:31Z

Several architectures have accelerated operations for MMIO operations writing to a single register, such as writesb, writesw, writesl, writesq, readsb, readsw, readsl and readsq but regmap currently cannot use them because we have no hooks for providing an accelerated noinc back-end for MMIO. Solve this by providing reg_[read/write]_noinc callbacks for the bus abstraction, so that the regmap-mmio bus can use this. Currently I do not see a need to support this for custom regmaps so it is only added to the bus. Callbacks are passed a void * with the array of values and a count which is the number of items of the byte chunk size for the specific register width. Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20220816204832.265837-1-linus.walleij@linaro.org Signed-off-by: Mark Brown

regmap: Make use of get_unaligned_be24(), put_unaligned_be24()

2022-08-15T00:21:25Z

Since we have a proper endianness converters for BE 24-bit data use them. While at it, format the code using switch-cases as it's done for the rest of the endianness handlers. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220726151213.71712-1-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown

regmap: permit to set reg_update_bits with bulk implementation

2022-07-18T12:45:28Z

A regmap may still require to set a custom reg_update_bits instead of relying to the regmap_bus_read/write general function. Permit to set it in the map if provided by the regmap config. Signed-off-by: Christian Marangi Link: https://lore.kernel.org/r/20220715201032.19507-1-ansuelsmth@gmail.com Signed-off-by: Mark Brown

regmap: add WARN_ONCE when invalid mask is provided to regmap_field_init()

2022-07-08T10:51:56Z

In regmap_field_init() when a invalid mask is provided it still initializes with any warnings. An example of this is when the LSB is greater than MSB a mask of zero is produced. WARN_ONCE() is not ideal for this but requires less changes to core regmap code. Cc: Mark Brown Cc: Nishanth Menon Signed-off-by: Matt Ranostay Link: https://lore.kernel.org/r/20220708013125.313892-1-mranostay@ti.com Signed-off-by: Mark Brown

regmap: Merge up fixes

2022-06-29T17:12:24Z

Needed for the regmap-irq rework.

regmap: Wire up regmap_config provided bulk write in missed functions

2022-06-20T15:51:29Z

There are some functions that were missed by commit d77e74561368 ("regmap: Add bulk read/write callbacks into regmap_config") when support to define bulk read/write callbacks in regmap_config was introduced. The regmap_bulk_write() and regmap_noinc_write() functions weren't changed to use the added map->write instead of the map->bus->write handler. Also, the regmap_can_raw_write() was not modified to take map->write into account. So will only return true if a bus with a .write callback is set. Fixes: d77e74561368 ("regmap: Add bulk read/write callbacks into regmap_config") Signed-off-by: Javier Martinez Canillas Reviewed-by: Marek Vasut Link: https://lore.kernel.org/r/20220616073435.1988219-4-javierm@redhat.com Signed-off-by: Mark Brown