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| author | Søren Holm <sgh@sgh.dk> | 2011-09-02 22:55:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-22 15:50:38 -0700 |
| commit | 06315348b16178e4c006e7892ef8e5e65f49c66a (patch) | |
| tree | 5be7085d5584e0cafdd0a51188e1658ddadb410d /drivers/tty | |
| parent | 2f7861de111bb8e33e6ab9f9607583c6fbc00132 (diff) | |
| download | op-kernel-dev-06315348b16178e4c006e7892ef8e5e65f49c66a.zip op-kernel-dev-06315348b16178e4c006e7892ef8e5e65f49c66a.tar.gz | |
serial: Support the EFR-register of XR1715x uarts.
The EFR (Enhenced-Features-Register) is located at a different offset
than the other devices supporting UART_CAP_EFR. This change add a special
setup quick to set UPF_EXAR_EFR on the port. UPF_EXAR_EFR is then used to
the port type to PORT_XR17D15X since it is for sure a XR17D15X uart.
Signed-off-by: Søren Holm <sgh@sgh.dk>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250.c | 20 | ||||
| -rw-r--r-- | drivers/tty/serial/8250_pci.c | 33 |
2 files changed, 52 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index 435ce14..82ca71a 100644 --- a/drivers/tty/serial/8250.c +++ b/drivers/tty/serial/8250.c @@ -309,6 +309,13 @@ static const struct serial8250_config uart_config[] = { UART_FCR_T_TRIG_01, .flags = UART_CAP_FIFO | UART_CAP_RTOIE, }, + [PORT_XR17D15X] = { + .name = "XR17D15X", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE | UART_CAP_EFR, + }, }; #if defined(CONFIG_MIPS_ALCHEMY) @@ -1075,6 +1082,14 @@ static void autoconfig_16550a(struct uart_8250_port *up) serial_outp(up, UART_IER, iersave); /* + * Exar uarts have EFR in a weird location + */ + if (up->port.flags & UPF_EXAR_EFR) { + up->port.type = PORT_XR17D15X; + up->capabilities |= UART_CAP_AFE | UART_CAP_EFR; + } + + /* * We distinguish between 16550A and U6 16550A by counting * how many bytes are in the FIFO. */ @@ -2417,7 +2432,10 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, efr |= UART_EFR_CTS; serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B); - serial_outp(up, UART_EFR, efr); + if (up->port.flags & UPF_EXAR_EFR) + serial_outp(up, UART_XR_EFR, efr); + else + serial_outp(up, UART_EFR, efr); } #ifdef CONFIG_ARCH_OMAP diff --git a/drivers/tty/serial/8250_pci.c b/drivers/tty/serial/8250_pci.c index 6b887d9..a79caba 100644 --- a/drivers/tty/serial/8250_pci.c +++ b/drivers/tty/serial/8250_pci.c @@ -1101,6 +1101,15 @@ static int pci_eg20t_init(struct pci_dev *dev) #endif } +static int +pci_xr17c154_setup(struct serial_private *priv, + const struct pciserial_board *board, + struct uart_port *port, int idx) +{ + port->flags |= UPF_EXAR_EFR; + return pci_default_setup(priv, board, port, idx); +} + /* This should be in linux/pci_ids.h */ #define PCI_VENDOR_ID_SBSMODULARIO 0x124B #define PCI_SUBVENDOR_ID_SBSMODULARIO 0x124B @@ -1506,6 +1515,30 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .setup = pci_timedia_setup, }, /* + * Exar cards + */ + { + .vendor = PCI_VENDOR_ID_EXAR, + .device = PCI_DEVICE_ID_EXAR_XR17C152, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_xr17c154_setup, + }, + { + .vendor = PCI_VENDOR_ID_EXAR, + .device = PCI_DEVICE_ID_EXAR_XR17C154, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_xr17c154_setup, + }, + { + .vendor = PCI_VENDOR_ID_EXAR, + .device = PCI_DEVICE_ID_EXAR_XR17C158, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_xr17c154_setup, + }, + /* * Xircom cards */ { |
