Messages in this thread Patches in this message | | | Date | Wed, 20 Dec 2006 16:33:10 +0300 | Subject | Re: [PATCH] Add support for Korenix 16C950-based PCI cards | From | Andrey Panin <> |
| |
On 347, 12 13, 2006 at 02:45:46PM +0000, Russell King wrote: > Linus, Andrew, > > This patch adds initial support to 8250-pci for the Korenix Jetcard PCI > serial cards. The JC12xx cards are standard RS232-based serial cards > utilising the Oxford 16C950 device. > > The JC14xx are RS422/RS485-based cards, but in order for these to be > supported natively, we will need additional tweaks to the 8250 layers > so we can specify some values for the 950's registers. Hence, these > two entries are commented out.
IIRC 16c950 just need two bits in ACR set properly. Will attached patch do the trick ?
> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> > > drivers/serial/8250_pci.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c > index 4d0ff8f..89c3f2c 100644 > --- a/drivers/serial/8250_pci.c > +++ b/drivers/serial/8250_pci.c > @@ -2239,6 +2239,30 @@ static struct pci_device_id serial_pci_t > pbn_b0_bt_1_460800 }, > > /* > + * Korenix Jetcard F0/F1 cards (JC1204, JC1208, JC1404, JC1408). > + * Cards are identified by their subsystem vendor IDs, which > + * (in hex) match the model number. > + * > + * Note that JC140x are RS422/485 cards which require ox950 > + * ACR = 0x10, and as such are not currently fully supported. > + */ > + { PCI_VENDOR_ID_KORENIX, PCI_DEVICE_ID_KORENIX_JETCARDF0, > + 0x1204, 0x0004, 0, 0, > + pbn_b0_4_921600 }, > + { PCI_VENDOR_ID_KORENIX, PCI_DEVICE_ID_KORENIX_JETCARDF0, > + 0x1208, 0x0004, 0, 0, > + pbn_b0_4_921600 }, > +/* { PCI_VENDOR_ID_KORENIX, PCI_DEVICE_ID_KORENIX_JETCARDF0, > + 0x1402, 0x0002, 0, 0, > + pbn_b0_2_921600 }, */ > +/* { PCI_VENDOR_ID_KORENIX, PCI_DEVICE_ID_KORENIX_JETCARDF0, > + 0x1404, 0x0004, 0, 0, > + pbn_b0_4_921600 }, */ > + { PCI_VENDOR_ID_KORENIX, PCI_DEVICE_ID_KORENIX_JETCARDF1, > + 0x1208, 0x0004, 0, 0, > + pbn_b0_4_921600 }, > + > + /* > * Dell Remote Access Card 4 - Tim_T_Murphy@Dell.com > */ > { PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_RAC4,
-- Andrey Panin | Linux and UNIX system administrator pazke@donpac.ru | PGP key: wwwkeys.pgp.net diff -urdpNX /usr/share/dontdiff -x Makefile linux-2.6.19.vanilla/drivers/serial/8250.c linux-2.6.19/drivers/serial/8250.c --- linux-2.6.19.vanilla/drivers/serial/8250.c 2006-12-19 20:18:26.000000000 +0300 +++ linux-2.6.19/drivers/serial/8250.c 2006-12-19 19:53:04.000000000 +0300 @@ -1548,7 +1548,7 @@ static int serial8250_startup(struct uar if (up->port.type == PORT_16C950) { /* Wake up and initialize UART */ - up->acr = 0; + up->acr = port->initial_acr; serial_outp(up, UART_LCR, 0xBF); serial_outp(up, UART_EFR, UART_EFR_ECB); serial_outp(up, UART_IER, 0); @@ -2599,6 +2599,7 @@ int serial8250_register_port(struct uart uart->port.iotype = port->iotype; uart->port.flags = port->flags | UPF_BOOT_AUTOCONF; uart->port.mapbase = port->mapbase; + uart->port.initial_acr = port->initial_acr; if (port->dev) uart->port.dev = port->dev; diff -urdpNX /usr/share/dontdiff -x Makefile linux-2.6.19.vanilla/drivers/serial/8250.h linux-2.6.19/drivers/serial/8250.h --- linux-2.6.19.vanilla/drivers/serial/8250.h 2006-12-19 20:44:12.000000000 +0300 +++ linux-2.6.19/drivers/serial/8250.h 2006-12-19 20:28:29.000000000 +0300 @@ -29,6 +29,8 @@ struct old_serial_port { unsigned short iomem_reg_shift; }; +#define initial_acr unused[0] + /* * This replaces serial_uart_config in include/linux/serial.h */ | |