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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-09 13:34:08 +0800 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2009-12-01 09:02:55 +0800 |
| commit | cc155c6f2cc705cb082ed676044368424e4b9121 (patch) | |
| tree | fdeeaaa4fe44d4a156249648f8ca77d7c68c8e20 /arch/arm/mach-pxa/devices.c | |
| parent | 7c6ccbf0ddce6d5a1e13e7f50befd864f289e108 (diff) | |
| download | lwn-cc155c6f2cc705cb082ed676044368424e4b9121.tar.gz lwn-cc155c6f2cc705cb082ed676044368424e4b9121.zip | |
[ARM] pxa: allow platforms to control which uarts are registered
For some platforms, it is inappropriate to register all PXA UARTs.
In some cases, the UARTs may not be used, and in others we may want
to avoid registering the UARTs to allow other drivers (eg, FICP) to
make use of the UART.
In addition, a while back there was a request to be able to pass
platform data to the UART driver.
This patch enables all of this by providing functions platforms can
call to register each individual UART.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/devices.c')
| -rw-r--r-- | arch/arm/mach-pxa/devices.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c index e2b427fa55e5..d4cc41d04b25 100644 --- a/arch/arm/mach-pxa/devices.c +++ b/arch/arm/mach-pxa/devices.c @@ -167,13 +167,18 @@ static struct resource pxa_resource_ffuart[] = { } }; -struct platform_device pxa_device_ffuart= { +struct platform_device pxa_device_ffuart = { .name = "pxa2xx-uart", .id = 0, .resource = pxa_resource_ffuart, .num_resources = ARRAY_SIZE(pxa_resource_ffuart), }; +void __init pxa_set_ffuart_info(void *info) +{ + pxa_register_device(&pxa_device_ffuart, info); +} + static struct resource pxa_resource_btuart[] = { { .start = 0x40200000, @@ -193,6 +198,11 @@ struct platform_device pxa_device_btuart = { .num_resources = ARRAY_SIZE(pxa_resource_btuart), }; +void __init pxa_set_btuart_info(void *info) +{ + pxa_register_device(&pxa_device_btuart, info); +} + static struct resource pxa_resource_stuart[] = { { .start = 0x40700000, @@ -212,6 +222,11 @@ struct platform_device pxa_device_stuart = { .num_resources = ARRAY_SIZE(pxa_resource_stuart), }; +void __init pxa_set_stuart_info(void *info) +{ + pxa_register_device(&pxa_device_stuart, info); +} + static struct resource pxa_resource_hwuart[] = { { .start = 0x41600000, @@ -231,6 +246,14 @@ struct platform_device pxa_device_hwuart = { .num_resources = ARRAY_SIZE(pxa_resource_hwuart), }; +void __init pxa_set_hwuart_info(void *info) +{ + if (cpu_is_pxa255()) + pxa_register_device(&pxa_device_hwuart, info); + else + pr_info("UART: Ignoring attempt to register HWUART on non-PXA255 hardware"); +} + static struct resource pxai2c_resources[] = { { .start = 0x40301680, |