Commit 4cf1c7bd authored Feb 23, 2022 by Michael Walle Committed by Tudor Ambarus Feb 25, 2022

mtd: spi-nor: allow a flash to define its own ready() function



Xilinx and Micron flashes have their own implementation of the
spi_nor_ready() function. At the moment, the core will figure out
which one to call according to some flags. Lay the foundation to
make it possible that a flash can register its own ready()
function.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220223134358.1914798-19-michael@walle.cc

parent b44aa9ac

drivers/mtd/spi-nor/core.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -794,6 +794,10 @@ static int spi_nor_ready(struct spi_nor *nor)
		{
		int sr, fsr;

		/* Flashes might override the standard routine. */
		if (nor->params->ready)
		return nor->params->ready(nor);

		if (nor->flags & SNOR_F_READY_XSR_RDY)
		sr = spi_nor_xsr_ready(nor);
		else

drivers/mtd/spi-nor/core.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -261,6 +261,9 @@ struct spi_nor_otp {
		* SPI NOR flashes that have peculiarities to the SPI NOR
		* standard e.g. different opcodes, specific address
		* calculation, page size, etc.
		* @ready: (optional) flashes might use a different mechanism
		* than reading the status register to indicate they
		* are ready for a new command
		* @locking_ops: SPI NOR locking methods.
		*/
		struct spi_nor_flash_parameter {
		@@ -282,6 +285,7 @@ struct spi_nor_flash_parameter {
		int (set_4byte_addr_mode)(struct spi_nor nor, bool enable);
		u32 (convert_addr)(struct spi_nor nor, u32 addr);
		int (setup)(struct spi_nor nor, const struct spi_nor_hwcaps *hwcaps);
		int (ready)(struct spi_nor nor);

		const struct spi_nor_locking_ops *locking_ops;
		};