diff options
author | Ji-Ze Hong (Peter Hong) <hpeter@gmail.com> | 2019-08-16 13:27:29 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-04 12:43:55 +0200 |
commit | 68e26a8d224f022cf7ec6ebb319a88ad29eb46a4 (patch) | |
tree | db1384b49c065e49ebcb33562dfb3d886cf92b5d /drivers/tty | |
parent | 4ad8e34d1f47fe46a05bb9fb17a7b5704beed446 (diff) | |
download | linux-68e26a8d224f022cf7ec6ebb319a88ad29eb46a4.tar.bz2 |
serial: 8250_pci: Add F81504A series Support
Fintek F81504A/508A/512A is PCIE to 4/8/12 UARTs device. It's support
IO/MMIO/PCIE conf to access all functions. The old F81504/508/512 is
only support IO.
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Link: https://lore.kernel.org/r/1565933249-23076-1-git-send-email-hpeter+linux_kernel@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r-- | drivers/tty/serial/8250/8250_pci.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 76d58bddeb06..83e21b65d57b 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -43,6 +43,11 @@ struct pci_serial_quirk { void (*exit)(struct pci_dev *dev); }; +struct f815xxa_data { + spinlock_t lock; + int idx; +}; + #define PCI_NUM_BAR_RESOURCES 6 struct serial_private { @@ -1707,6 +1712,77 @@ static int pci_fintek_init(struct pci_dev *dev) return max_port; } +static void f815xxa_mem_serial_out(struct uart_port *p, int offset, int value) +{ + struct f815xxa_data *data = p->private_data; + unsigned long flags; + + spin_lock_irqsave(&data->lock, flags); + writeb(value, p->membase + offset); + readb(p->membase + UART_SCR); /* Dummy read for flush pcie tx queue */ + spin_unlock_irqrestore(&data->lock, flags); +} + +static int pci_fintek_f815xxa_setup(struct serial_private *priv, + const struct pciserial_board *board, + struct uart_8250_port *port, int idx) +{ + struct pci_dev *pdev = priv->dev; + struct f815xxa_data *data; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->idx = idx; + spin_lock_init(&data->lock); + + port->port.private_data = data; + port->port.iotype = UPIO_MEM; + port->port.flags |= UPF_IOREMAP; + port->port.mapbase = pci_resource_start(pdev, 0) + 8 * idx; + port->port.serial_out = f815xxa_mem_serial_out; + + return 0; +} + +static int pci_fintek_f815xxa_init(struct pci_dev *dev) +{ + u32 max_port, i; + int config_base; + + if (!(pci_resource_flags(dev, 0) & IORESOURCE_MEM)) + return -ENODEV; + + switch (dev->device) { + case 0x1204: /* 4 ports */ + case 0x1208: /* 8 ports */ + max_port = dev->device & 0xff; + break; + case 0x1212: /* 12 ports */ + max_port = 12; + break; + default: + return -EINVAL; + } + + /* Set to mmio decode */ + pci_write_config_byte(dev, 0x209, 0x40); + + for (i = 0; i < max_port; ++i) { + /* UART0 configuration offset start from 0x2A0 */ + config_base = 0x2A0 + 0x08 * i; + + /* Select 128-byte FIFO and 8x FIFO threshold */ + pci_write_config_byte(dev, config_base + 0x01, 0x33); + + /* Enable UART I/O port */ + pci_write_config_byte(dev, config_base + 0, 0x01); + } + + return max_port; +} + static int skip_tx_en_setup(struct serial_private *priv, const struct pciserial_board *board, struct uart_8250_port *port, int idx) @@ -2819,6 +2895,30 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subdevice = PCI_ANY_ID, .setup = pci_moxa_setup, }, + { + .vendor = 0x1c29, + .device = 0x1204, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_fintek_f815xxa_setup, + .init = pci_fintek_f815xxa_init, + }, + { + .vendor = 0x1c29, + .device = 0x1208, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_fintek_f815xxa_setup, + .init = pci_fintek_f815xxa_init, + }, + { + .vendor = 0x1c29, + .device = 0x1212, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_fintek_f815xxa_setup, + .init = pci_fintek_f815xxa_init, + }, /* * Default "match everything" terminator entry @@ -3014,6 +3114,9 @@ enum pci_board_num_t { pbn_fintek_4, pbn_fintek_8, pbn_fintek_12, + pbn_fintek_F81504A, + pbn_fintek_F81508A, + pbn_fintek_F81512A, pbn_wch382_2, pbn_wch384_4, pbn_pericom_PI7C9X7951, @@ -3773,6 +3876,21 @@ static struct pciserial_board pci_boards[] = { .base_baud = 115200, .first_offset = 0x40, }, + [pbn_fintek_F81504A] = { + .num_ports = 4, + .uart_offset = 8, + .base_baud = 115200, + }, + [pbn_fintek_F81508A] = { + .num_ports = 8, + .uart_offset = 8, + .base_baud = 115200, + }, + [pbn_fintek_F81512A] = { + .num_ports = 12, + .uart_offset = 8, + .base_baud = 115200, + }, [pbn_wch382_2] = { .flags = FL_BASE0, .num_ports = 2, @@ -5719,6 +5837,9 @@ static const struct pci_device_id serial_pci_tbl[] = { { PCI_DEVICE(0x1c29, 0x1104), .driver_data = pbn_fintek_4 }, { PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 }, { PCI_DEVICE(0x1c29, 0x1112), .driver_data = pbn_fintek_12 }, + { PCI_DEVICE(0x1c29, 0x1204), .driver_data = pbn_fintek_F81504A }, + { PCI_DEVICE(0x1c29, 0x1208), .driver_data = pbn_fintek_F81508A }, + { PCI_DEVICE(0x1c29, 0x1212), .driver_data = pbn_fintek_F81512A }, /* MKS Tenta SCOM-080x serial cards */ { PCI_DEVICE(0x1601, 0x0800), .driver_data = pbn_b0_4_1250000 }, |