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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-05-11 15:10:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-13 13:47:26 +0300 |
| commit | b334214ea08d941af376fec853621d856b12bc81 (patch) | |
| tree | 730476e5b7ed66c592d60f50eb949ce20c6274e8 /arch/mips/alchemy/common | |
| parent | 30c61f53fdf23e8a396dca8378615b4900edff6f (diff) | |
| download | linux-b334214ea08d941af376fec853621d856b12bc81.tar.xz | |
serial: 8250: RT288x/Au1xxx code away from core
A non-trivial amount of RT288x/Au1xxx code is encapsulated into
ifdeffery in 8250_port / 8250_early and some if UPIO_AU blocks.
Create a separate file from them.
Also handle errors properly in the cases where RT288x/Au1xxx code is
not configured.
It seems that 0x1000 mapsize is likely overkill but I've kept it the
same as previously (the value was shrunk to that value in commit
b2b13cdfd05e ("SERIAL 8250: Fixes for Alchemy UARTs.")). Seemingly, the
driver only needs to access register at 0x28 for the divisor latch.
The Kconfig side is a bit tricky. As SERIAL_8250_RT288X is bool it can
only be =y. It is possible to have SERIAL_8250=m + SERIAL_8250_RT288X=y
which required altering when 8250/ is included or the rt288x would not
be built.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230511121029.13128-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/mips/alchemy/common')
| -rw-r--r-- | arch/mips/alchemy/common/platform.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c index b8f3397c59c9..d4ab34b3b404 100644 --- a/arch/mips/alchemy/common/platform.c +++ b/arch/mips/alchemy/common/platform.c @@ -51,9 +51,9 @@ static void alchemy_8250_pm(struct uart_port *port, unsigned int state, #define PORT(_base, _irq) \ { \ .mapbase = _base, \ + .mapsize = 0x1000, \ .irq = _irq, \ .regshift = 2, \ - .iotype = UPIO_AU, \ .flags = UPF_SKIP_TEST | UPF_IOREMAP | \ UPF_FIXED_TYPE, \ .type = PORT_16550A, \ @@ -124,8 +124,14 @@ static void __init alchemy_setup_uarts(int ctype) au1xx0_uart_device.dev.platform_data = ports; /* Fill up uartclk. */ - for (s = 0; s < c; s++) + for (s = 0; s < c; s++) { ports[s].uartclk = uartclk; + if (au_platform_setup(&ports[s]) < 0) { + kfree(ports); + printk(KERN_INFO "Alchemy: missing support for UARTs\n"); + return; + } + } if (platform_device_register(&au1xx0_uart_device)) printk(KERN_INFO "Alchemy: failed to register UARTs\n"); } |