Stanislaw Gruszka 5b96f17290 atmel_spi: allow transfer when max_speed_hz = 0 ...

For some reason I have to slowdown clock to touchscreen device.

In atmel_spi_setup() there is comment that max_speed_hz == 0 means as slow
as possible and divider is set to maximum value.  But in
atmel_spi_transfer() function is check against not zero max_speed_hz with
EINVAL returned.

Probably driver should setup divider for each transfer based on
transfer->speed_hz value, but I think that would be not necessary overhead
as all used devices have constant clock.

Below patch works fine for me.

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-01-15 16:39:35 -08:00

..

at25.c

spi: at25 driver is for EEPROM not FLASH

2007-12-05 09:21:18 -08:00

atmel_spi.c

atmel_spi: allow transfer when max_speed_hz = 0

2009-01-15 16:39:35 -08:00

atmel_spi.h

[PATCH] SPI: atmel_spi driver

2007-02-14 08:09:53 -08:00

au1550_spi.c

spi: au1550_spi full duplex dma fix

2008-12-01 19:55:24 -08:00

Kconfig

spi_gpio driver

2009-01-06 15:59:19 -08:00

Makefile

spi_gpio driver

2009-01-06 15:59:19 -08:00

mpc52xx_psc_spi.c

spi: mpc52xx_psc_spi chipselect bugfix

2008-12-01 19:55:24 -08:00

omap2_mcspi.c

[ARM] omap: convert OMAP drivers to use ioremap()

2008-09-05 17:02:30 +01:00

omap_uwire.c

[ARM] omap: convert OMAP drivers to use ioremap()

2008-09-05 17:02:30 +01:00

orion_spi.c

orion_spi: handle 88F6183 erratum

2008-10-16 11:21:38 -07:00

pxa2xx_spi.c

drivers/spi: move a dereference below a NULL test

2009-01-06 15:59:20 -08:00

spi_bfin5xx.c

spi_bfin5xx: use PIO for full duplex, not DMA

2008-05-01 08:04:01 -07:00

spi_bitbang.c

spi: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06 10:44:37 -08:00

spi_butterfly.c

spi: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06 10:44:37 -08:00

spi_gpio.c

spi_gpio driver

2009-01-06 15:59:19 -08:00

spi_imx.c

spi: fix spi_imx probe oopsing

2008-12-01 19:55:24 -08:00

spi_lm70llp.c

hwmon: (lm70) Code streamlining and cleanup

2009-01-07 16:37:34 +01:00

spi_mpc83xx.c

spi_mpc83xx: reject invalid transfer sizes

2008-09-13 14:41:51 -07:00

spi_s3c24xx_gpio.c

spi: fix spi_s3c24xx_gpio num_chipselect

2008-12-01 19:55:24 -08:00

spi_s3c24xx.c

spi: use generic gpio calls in spi_s3c24xx_gpio

2009-01-06 15:59:19 -08:00

spi_sh_sci.c

spi: fix platform driver hotplug/coldplug

2008-04-11 08:06:43 -07:00

spi_txx9.c

spi: fix platform driver hotplug/coldplug

2008-04-11 08:06:43 -07:00

spi.c

spi: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06 10:44:37 -08:00

spidev.c

spi: avoid spidev crash when device is removed

2008-12-01 19:55:24 -08:00

tle62x0.c

tle62x0 driver stops ignoring read errors

2007-11-14 18:45:42 -08:00

xilinx_spi.c

Xilinx: SPI: updated driver for device tree

2009-01-09 16:01:53 -07:00