kernel/git/stable/linux.git/drivers/spi/spi-altera.c, branch master

spi: altera: separate core code from platform code

2021-04-20T16:26:40+00:00

In preparation of adding support for a new bus type, separate the core spi-altera code from the platform driver code. Signed-off-by: Matthew Gerlach Link: https://lore.kernel.org/r/20210416165720.554144-2-matthew.gerlach@linux.intel.com Signed-off-by: Mark Brown

spi: altera: Fix memory leak on error path

2021-01-20T16:46:50+00:00

Release master that have been previously allocated if the number of chipselect is invalid. Fixes: 8e04187c1bc7 ("spi: altera: add SPI core parameters support via platform data.") Signed-off-by: Pan Bian Reviewed-by: Tom Rix Link: https://lore.kernel.org/r/20210120082635.49304-1-bianpan2016@163.com Signed-off-by: Mark Brown

spi: altera: fix return value for altera_spi_txrx()

2020-12-29T13:18:09+00:00

This patch fixes the return value for altera_spi_txrx. It should return 1 for interrupt transfer mode, and return 0 for polling transfer mode. The altera_spi_txrx() implements the spi_controller.transfer_one callback. According to the spi-summary.rst, the transfer_one should return 0 when transfer is finished, return 1 when transfer is still in progress. Signed-off-by: Xu Yilun Link: https://lore.kernel.org/r/1609219662-27057-2-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: fix module autoload

2020-06-24T15:37:47+00:00

Add the MODULE_DEVICE_TABLE macro for the platform_device_id table to allow proper creation of modalias strings and fix autoloading module for this driver. Signed-off-by: Xu Yilun Signed-off-by: Russ Weight Link: https://lore.kernel.org/r/1592962286-25752-3-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: fix driver matching failure of the device ID "spi_altera"

2020-06-24T15:37:46+00:00

The driver is expected to support device ID "spi_altera" for MMIO accessed devices, device ID "subdev_spi_altera" for indirect accessed devices. But the platform bus will not try driver name match anymore if the platform driver has an id_table. So the "spi_altera" should also be added to id_table. Signed-off-by: Xu Yilun Signed-off-by: Russ Weight Link: https://lore.kernel.org/r/1592962286-25752-2-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: fix size mismatch on 64 bit processors

2020-06-19T11:56:06+00:00

The spi-altera driver was originally written with a 32 bit processor, where sizeof(unsigned long) is 4. On a 64 bit processor sizeof(unsigned long) is 8. Change the structure member to u32 to match the actual size of the control register. Signed-off-by: Matthew Gerlach Signed-off-by: Xu Yilun Reviewed-by: Tom Rix Link: https://lore.kernel.org/r/1592531021-11412-4-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: support indirect access to the registers

2020-06-19T11:56:05+00:00

This patch adds support for indirect access to the registers via parent regmap. The use case is, the spi master is a sub device of a Multifunction device, which is connected to host by some indirect bus. To support this device type, a new platform_device_id is introduced, and the driver tries to get parent regmap for register accessing like many MFD sub device drivers do. Signed-off-by: Xu Yilun Signed-off-by: Matthew Gerlach Signed-off-by: Wu Hao Signed-off-by: Russ Weight Reviewed-by: Tom Rix Link: https://lore.kernel.org/r/1592531021-11412-3-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: use regmap-mmio instead of direct mmio register access

2020-06-19T11:56:04+00:00

This patch adds support for regmap. It makes preparation for supporting different ways to access the registers. Signed-off-by: Matthew Gerlach Signed-off-by: Wu Hao Signed-off-by: Xu Yilun Signed-off-by: Russ Weight Reviewed-by: Tom Rix Link: https://lore.kernel.org/r/1592531021-11412-2-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: add platform data for slave information.

2020-06-15T22:36:03+00:00

This patch introduces platform data for slave information, it allows spi-altera to add new spi devices once master registration is done. Signed-off-by: Wu Hao Signed-off-by: Xu Yilun Signed-off-by: Matthew Gerlach Signed-off-by: Russ Weight Reviewed-by: Tom Rix Link: https://lore.kernel.org/r/1591845911-10197-4-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown

spi: altera: add SPI core parameters support via platform data.

2020-06-15T22:36:02+00:00

This patch introduced SPI core parameters in platform data, it allows passing these SPI core parameters via platform data. Signed-off-by: Wu Hao Signed-off-by: Xu Yilun Signed-off-by: Matthew Gerlach Signed-off-by: Russ Weight Reviewed-by: Tom Rix Link: https://lore.kernel.org/r/1591845911-10197-3-git-send-email-yilun.xu@intel.com Signed-off-by: Mark Brown