linux-toradex.git/drivers/tty/serial/samsung.c, branch v3.4.16

serial: samsung: fix omission initialize ulcon in reset port fn()

2012-04-09T17:30:39+00:00

Fix omission initialize ulcon in s3c24xx_serial_resetport(),
reset port function in drivers/tty/serial/samsung.c. It has
been happened from commit 0dfb3b41("serial: samsung: merge
all SoC specific port reset functions")

Signed-off-by: Kukjin Kim 
Cc: stable  [3.3]
Signed-off-by: Greg Kroah-Hartman

serial: samsung: fix s3c2442 platform data

2012-02-24T21:50:46+00:00

Without that fix machines having a s3c2442 CPU have something
  like that in dmesg:
    samsung-uart s3c2440-uart.0: could not find driver data
    samsung-uart s3c2440-uart.1: could not find driver data
    samsung-uart s3c2440-uart.2: could not find driver data
  And serial is never initialized.

The previous log was obtained trough early printk on the gta02
  machine.

Signed-off-by: Denis 'GNUtoo' Carikli 
Signed-off-by: Greg Kroah-Hartman

serial: samsung: Add support for EXYNOS5250

2012-02-03T00:11:24+00:00

Cc: Thomas Abraham 
Cc: Greg Kroah-Hartman 
Signed-off-by: Kukjin Kim 
Signed-off-by: Greg Kroah-Hartman

serial: samsung: Add support for EXYNOS4212 and EXYNOS4412

2012-02-03T00:11:24+00:00

This should be added for EXYNOS4212 and EXYNOS4412 SoCs.

Cc: Thomas Abraham 
Cc: Greg Kroah-Hartman 
Cc: stable 
Signed-off-by: Kukjin Kim 
Signed-off-by: Greg Kroah-Hartman

serial: samsung: Fix build for non-Exynos4210 devices

2011-12-23T01:07:01+00:00

exynos4120_serial_drv_data is only defined when building with support
for Exynos4210 so use the already provided define to ensure that we
don't reference it when building for other SoCs.

Signed-off-by: Mark Brown 
[kgene.kim@samsung.com: Fixed build warning]
Signed-off-by: Kukjin Kim

serial: samsung: add device tree support

2011-12-23T01:07:01+00:00

Add device tree based discovery support for Samsung's uart controller.

Cc: Ben Dooks 
Acked-by: Grant Likely 
Signed-off-by: Thomas Abraham 
Signed-off-by: Kukjin Kim

serial: samsung: merge probe() function from all SoC specific extensions

2011-12-23T01:07:00+00:00

With reset port, set clock and get clock functions in SoC specific extentions
being removed, only the driver probe is left over in these extensions. The
probe function itself can be merged into one and moved into the samsung common
serial driver. With driver probe also moved, all the SoC specific extentions
are no longer required and they are deleted.

Cc: Ben Dooks 
Signed-off-by: Thomas Abraham 
Signed-off-by: Kukjin Kim

serial: samsung: merge all SoC specific port reset functions

2011-12-23T01:06:59+00:00

The port reset function in each of the platform specific extension performs
the same operations and hence all the reset port functions can be merged into
one and moved into the common samsung uart driver. The SoC specific port reset
functions are removed from SoC extensions.

Cc: Ben Dooks 
Signed-off-by: Thomas Abraham 
Signed-off-by: Kukjin Kim

serial: samsung: switch to clkdev based clock lookup

2011-12-23T01:06:56+00:00

Instead of using clock names supplied in platform data, use a generic
clock name 'clk_uart_baud' to look up clocks. The platform code should
register clocks with the name 'clk_uart_baud' which can be used by the
baud rate generator. The clock lookup and selection of the best clock
as baud rate clock is reworked.

Platform code can specify the clocks that can be used as source for the
baud clock (as supported previously by passing names of clocks). A new
member is added to the platform data 'clk_sel' which holds a bit-field
value with each bit representing a baud source clock. If a bit at any
bit position is set, that clock is looked up to participate in the
selection of the baud clock source.

Cc: Ben Dooks 
Signed-off-by: Thomas Abraham 
Signed-off-by: Kukjin Kim

ARM: S3C2440: move handling of fclk/n clock to platform code

2011-12-23T01:06:55+00:00

s3c2440 uses fclk/n (fclk divided by n) clock as one of the possible clocks used
to generate the baud rate clock. The divider 'n' in this case can be logically
represented outside of the uart controller.

This patch creates a new clock by name "fclk_n" for s3c2440 based platforms to
represent the fclk/n clock in the platform code. This clock provides a get_rate
callback that checks the UCON0/1/2 registers to determine the clock rate. The
samsung uart driver would receive the "fclk_n" clock name as one of the possible
baud rate clock options and the driver need not determine clock rate of fclk/n.

Cc: Ben Dooks 
Cc: Vasily Khoruzhick 
Signed-off-by: Thomas Abraham 
Signed-off-by: Kukjin Kim