serial: 8250_pci: Add F81504A series Support (68e26a8d) · Commits · 戴 / test

drivers/tty/serial/8250/8250_pci.c

+121 −0

Original line number	Diff line number	Diff line
		@@ -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 },

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