diff options
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 27 |
2 files changed, 24 insertions, 8 deletions
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 2b8334601c8..86e2c994d44 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1596,4 +1596,9 @@ config SERIAL_PCH_UART This driver is for PCH(Platform controller Hub) UART of Intel EG20T which is an IOH(Input/Output Hub) for x86 embedded processor. Enabling PCH_DMA, this PCH UART works as DMA mode. + + This driver also can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/ + Output Hub) which is for IVI(In-Vehicle Infotainment) use. + ML7213 is companion chip for Intel Atom E6xx series. + ML7213 is completely compatible for Intel EG20T PCH. endmenu diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 70a61458ec4..3b2fb93e1fa 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -40,10 +40,11 @@ enum { #define PCH_UART_DRIVER_DEVICE "ttyPCH" -#define PCH_UART_NR_GE_256FIFO 1 -#define PCH_UART_NR_GE_64FIFO 3 -#define PCH_UART_NR_GE (PCH_UART_NR_GE_256FIFO+PCH_UART_NR_GE_64FIFO) -#define PCH_UART_NR PCH_UART_NR_GE +/* Set the max number of UART port + * Intel EG20T PCH: 4 port + * OKI SEMICONDUCTOR ML7213 IOH: 3 port +*/ +#define PCH_UART_NR 4 #define PCH_UART_HANDLED_RX_INT (1<<((PCH_UART_HANDLED_RX_INT_SHIFT)<<1)) #define PCH_UART_HANDLED_TX_INT (1<<((PCH_UART_HANDLED_TX_INT_SHIFT)<<1)) @@ -192,6 +193,8 @@ enum { #define PCH_UART_HAL_LOOP (PCH_UART_MCR_LOOP) #define PCH_UART_HAL_AFE (PCH_UART_MCR_AFE) +#define PCI_VENDOR_ID_ROHM 0x10DB + struct pch_uart_buffer { unsigned char *buf; int size; @@ -1249,7 +1252,7 @@ static struct uart_driver pch_uart_driver = { }; static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, - int port_type) + const struct pci_device_id *id) { struct eg20t_port *priv; int ret; @@ -1258,6 +1261,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, unsigned char *rxbuf; int fifosize, base_baud; static int num; + int port_type = id->driver_data; priv = kzalloc(sizeof(struct eg20t_port), GFP_KERNEL); if (priv == NULL) @@ -1269,11 +1273,11 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, switch (port_type) { case PORT_UNKNOWN: - fifosize = 256; /* UART0 */ + fifosize = 256; /* EG20T/ML7213: UART0 */ base_baud = 1843200; /* 1.8432MHz */ break; case PORT_8250: - fifosize = 64; /* UART1~3 */ + fifosize = 64; /* EG20T:UART1~3 ML7213: UART1~2*/ base_baud = 1843200; /* 1.8432MHz */ break; default: @@ -1307,6 +1311,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, pci_set_drvdata(pdev, priv); pch_uart_hal_request(pdev, fifosize, base_baud); + ret = uart_add_one_port(&pch_uart_driver, &priv->port); if (ret < 0) goto init_port_hal_free; @@ -1384,6 +1389,12 @@ static DEFINE_PCI_DEVICE_TABLE(pch_uart_pci_id) = { .driver_data = PCH_UART_2LINE}, {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8814), .driver_data = PCH_UART_2LINE}, + {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8027), + .driver_data = PCH_UART_8LINE}, + {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8028), + .driver_data = PCH_UART_2LINE}, + {PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8029), + .driver_data = PCH_UART_2LINE}, {0,}, }; @@ -1397,7 +1408,7 @@ static int __devinit pch_uart_pci_probe(struct pci_dev *pdev, if (ret < 0) goto probe_error; - priv = pch_uart_init_port(pdev, id->driver_data); + priv = pch_uart_init_port(pdev, id); if (!priv) { ret = -EBUSY; goto probe_disable_device; |