kernel/linux.git/drivers/base/regmap/regmap-mdio.c, branch v6.12.80

regmap: Drop capitalisation in MODULE_DESCRIPTION()

2024-04-10T21:45:52+00:00

'Regmap' should be spelled as 'regmap'. Update that. Suggested-by: Mark Brown Signed-off-by: Andy Shevchenko Link: https://msgid.link/r/20240410202912.1659275-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown

regmap: Rework regmap_mdio_c45_{read|write} for new C45 API.

2023-01-16T13:16:09+00:00

The MDIO subsystem is getting rid of MII_ADDR_C45 and thus also encoding associated encoding of the C45 device address and register address into one value. regmap-mdio also uses this encoding for the C45 bus. Move to the new C45 helpers for MDIO access and provide regmap-mdio helper macros. Signed-off-by: Andrew Lunn Signed-off-by: Michael Walle Link: https://lore.kernel.org/r/20230116111509.4086236-1-michael@walle.cc Signed-off-by: Mark Brown

net: Convert more users of mdiobus_* to mdiodev_*

2021-10-24T12:40:33+00:00

This converts users of mdiobus to mdiodev using the following semantic patch: @@ identifier mdiodev; expression regnum; @@ - mdiobus_read(mdiodev->bus, mdiodev->addr, regnum) + mdiodev_read(mdiodev, regnum) @@ identifier mdiodev; expression regnum, val; @@ - mdiobus_write(mdiodev->bus, mdiodev->addr, regnum, val) + mdiodev_write(mdiodev, regnum, val) Signed-off-by: Sean Anderson Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller

regmap: mdio: Reject invalid addresses

2021-06-14T14:00:29+00:00

When an invalid register offset is provided, the upper bits are silently discarded. Change this to return -ENXIO instead, to help catch potential bugs. Signed-off-by: Sander Vanheule Link: https://lore.kernel.org/r/047007e0e9fb596480829f11f8c7e6281d235c70.1623244066.git.sander@svanheule.net Signed-off-by: Mark Brown

regmap: mdio: Fix regmap_bus pointer constness

2021-06-14T14:00:28+00:00

A const qualifier was omitted in the declaration of the regmap_bus pointer, resulting in the following errors: drivers/base/regmap/regmap-mdio.c: In function ‘__regmap_init_mdio’: drivers/base/regmap/regmap-mdio.c:87:7: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] 87 | bus = ®map_mdio_c22_bus; | ^ drivers/base/regmap/regmap-mdio.c:89:7: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] 89 | bus = ®map_mdio_c45_bus; | ^ Fix this by ensuring the pointer has the same qualifiers as the assigned values. Fixes: f083be9db060 ("regmap: mdio: Add clause-45 support") Signed-off-by: Sander Vanheule Link: https://lore.kernel.org/r/f304ca638ffdc66d4803a6df1f75436894bd1d5f.1623244066.git.sander@svanheule.net Signed-off-by: Mark Brown

regmap: mdio: Add clause-45 support

2021-06-08T12:37:43+00:00

Modern ethernet phys support the so-called clause-45 register access mode, which allows for register address widths of 16 bit. Also allow for 16-bit register address widths, and return a regmap for clause-45 access in that case. Signed-off-by: Sander Vanheule Link: https://lore.kernel.org/r/9cc263e3e7d5865edd90453b4183f1cf363cb636.1622743333.git.sander@svanheule.net Signed-off-by: Mark Brown

regmap: mdio: Clean up invalid clause-22 addresses

2021-06-08T12:37:42+00:00

Currently a regmap configuration for regmap-mdio must have a register address width of 5 bits (cf. clause-22 register access). This is not enforced on the provided register addresses, which would enable clause-45 MDIO bus access, if the right bit packing is used. Prevent clause-45 access, and other invalid addresses, by masking the provided register address. Signed-off-by: Sander Vanheule Link: https://lore.kernel.org/r/f7013f67e6d6ff56ec98660f18320f6ffcc1a777.1622743333.git.sander@svanheule.net Signed-off-by: Mark Brown

regmap: mdio: Don't modify output if error happened

2021-05-20T16:57:32+00:00

regmap_mdio_read() breaks the principle of "no touch output till it's known that the operation succeeds". Refactor it accordingly. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210520120518.30490-1-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown

regmap: Add MDIO bus support

2021-05-19T13:19:10+00:00

Basic support for MDIO bus access. Support only includes clause-22 register access, with 5-bit addresses, and 16-bit wide registers. Signed-off-by: Sander Vanheule Link: https://lore.kernel.org/r/63b99a2fec2c4ea3c461d59d451af8d675ecf312.1621279162.git.sander@svanheule.net Signed-off-by: Mark Brown