user/sven/linux.git/include/linux/mtd/fsmc.h, branch v3.4.78

mtd: Add device-tree support to fsmc_nand

2012-03-27T00:01:07Z

This patch adds support to configure the FSMC NAND driver (used amongst others on SPEAr platforms) via device-tree instead of platform_data. Signed-off-by: Stefan Roese Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: nand/fsmc: Remove sparse warnings and errors

2012-03-27T00:00:30Z

This patch removes the sparse below warnings and errors for nand/fsmc driver /root/vipin/spear/kernel/3.3/linux-3.3/drivers/mtd/nand/fsmc_nand.c:363:31: warning: incorrect type in initializer (different address spaces) /root/vipin/spear/kernel/3.3/linux-3.3/drivers/mtd/nand/fsmc_nand.c:363:31: expected struct fsmc_regs *regs /root/vipin/spear/kernel/3.3/linux-3.3/drivers/mtd/nand/fsmc_nand.c:363:31: got void [noderef] *regs_va [...] Signed-off-by: Vipin Kumar Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: nand/fsmc: Add DMA support

2012-03-27T00:00:24Z

The fsmc_nand driver uses cpu to read/write onto the device. This is inefficient because of two reasons - the cpu gets locked on AHB bus while reading from NAND - the cpu is unnecessarily used when dma can do the job This patch adds the support for accessing the device through DMA Signed-off-by: Vipin Kumar Reviewed-by: Viresh Kumar Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: nand/fsmc: Access the NAND device word by word whenever possible

2012-03-27T00:00:14Z

The default way of accessing nand device is using the nand width. This means that 8bit devices are using u8 * and 16bit devices are accessed using u16 *. This results in a non-optimal performance since the FSMC is designed to translate the normal word accesses into device width based accesses. This patch implements read_buf and write_buf callbacks using word by word accesses. Signed-off-by: Vipin Kumar Reviewed-by: Viresh Kumar Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: nand/fsmc: Modify fsmc driver to accept nand timing parameters via platform

2012-03-26T23:59:34Z

FSMC controllers provide registers to program the required timing values for attached NAND device. The timing values used until now are relaxed and should work for all devices. Although, for read/write performance improvements, the fsmc nand driver should accept nand timings as a platform data and program the timing parameters into fsmc registers accordingly. This patch implements this modification. Additionally, it programs the default timing parameters if these are not passed via platform data. Signed-off-by: Vipin Kumar Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: fsmc: Move ALE, CLE defines to their respective platform

2012-03-26T23:46:19Z

Address Latch Enable (ALE) and Command Latch Enable (CLE) defines are platform specific and were wrongly put in driver specific fsmc.h file. Move such defines to their respective platform. Also instead of relying on fsmc driver, pass ALE, CLE offsets explicitly from individual platform. Signed-off-by: Shiraz Hashim Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: fsmc: use ALE and CLE offsets from platform data

2012-03-26T23:45:55Z

ALE and CLE offsets can be different on different devices. Let devices pass these offsets to the fsmc driver through platform data. Signed-off-by: Shiraz Hashim Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: FSMC NAND fix obvious speling errors

2010-12-03T16:35:40Z

Fix spelling in the interface file. Signed-off-by: Linus Walleij Signed-off-by: David Woodhouse

mtd: FSMC NAND use the PrimeCell identifier macros

2010-12-03T16:35:30Z

The FSMC actually has a standard ARM PrimeCell ID register, and the "revision" part of that register contains the thing that the code is looking at. Reuse the infrastructure from the AMBA bus abstraction and rid local defines. Signed-off-by: Linus Walleij Signed-off-by: David Woodhouse

mtd: fsmc.h: including linux/io.h for definition of readl

2010-12-03T16:29:17Z

Signed-off-by: Viresh Kumar Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse