| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Andy Shevchenko | 1202 | 99.92% | 2 | 66.67% |
| Ilpo Järvinen | 1 | 0.08% | 1 | 33.33% |
| Total | 1203 | 3 |
// SPDX-License-Identifier: GPL-2.0 /* Driver for Pericom UART */ #include <linux/bits.h> #include <linux/module.h> #include <linux/overflow.h> #include <linux/pci.h> #include "8250.h" #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SDB 0x1051 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2S 0x1053 #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_4 0x105a #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_4 0x105b #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SDB 0x105c #define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4S 0x105e #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_8 0x106a #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_8 0x106b #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_2DB 0x1091 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_2 0x1093 #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4 0x1098 #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4DB 0x1099 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_4 0x109b #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_8 0x10a9 #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SMDB 0x10d1 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2SM 0x10d3 #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SM 0x10d9 #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SMDB 0x10da #define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4SM 0x10dc #define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_8SM 0x10e9 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_1 0x1108 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_2 0x1110 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_2 0x1111 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_4 0x1118 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_4 0x1119 #define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2S 0x1152 #define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4S 0x115a #define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_2 0x1190 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_2 0x1191 #define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_4 0x1198 #define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_4 0x1199 #define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2SM 0x11d0 #define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4SM 0x11d8 struct pericom8250 { void __iomem *virt; unsigned int nr; int line[]; }; static void pericom_do_set_divisor(struct uart_port *port, unsigned int baud, unsigned int quot, unsigned int quot_frac) { int scr; for (scr = 16; scr > 4; scr--) { unsigned int maxrate = port->uartclk / scr; unsigned int divisor = max(maxrate / baud, 1U); int delta = maxrate / divisor - baud; if (baud > maxrate + baud / 50) continue; if (delta > baud / 50) divisor++; if (divisor > 0xffff) continue; /* Update delta due to possible divisor change */ delta = maxrate / divisor - baud; if (abs(delta) < baud / 50) { struct uart_8250_port *up = up_to_u8250p(port); int lcr = serial_port_in(port, UART_LCR); serial_port_out(port, UART_LCR, lcr | UART_LCR_DLAB); serial_dl_write(up, divisor); serial_port_out(port, 2, 16 - scr); serial_port_out(port, UART_LCR, lcr); return; } } } static int pericom8250_probe(struct pci_dev *pdev, const struct pci_device_id *id) { unsigned int nr, i, bar = 0, maxnr; struct pericom8250 *pericom; struct uart_8250_port uart; int ret; ret = pcim_enable_device(pdev); if (ret) return ret; maxnr = pci_resource_len(pdev, bar) >> 3; if (pdev->vendor == PCI_VENDOR_ID_PERICOM) nr = pdev->device & 0x0f; else if (pdev->vendor == PCI_VENDOR_ID_ACCESSIO) nr = BIT(((pdev->device & 0x38) >> 3) - 1); else nr = 1; pericom = devm_kzalloc(&pdev->dev, struct_size(pericom, line, nr), GFP_KERNEL); if (!pericom) return -ENOMEM; pericom->virt = pcim_iomap(pdev, bar, 0); if (!pericom->virt) return -ENOMEM; memset(&uart, 0, sizeof(uart)); uart.port.dev = &pdev->dev; uart.port.irq = pdev->irq; uart.port.private_data = pericom; uart.port.iotype = UPIO_PORT; uart.port.uartclk = 921600 * 16; uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ; uart.port.set_divisor = pericom_do_set_divisor; for (i = 0; i < nr && i < maxnr; i++) { unsigned int offset = (i == 3 && nr == 4) ? 0x38 : i * 0x8; uart.port.iobase = pci_resource_start(pdev, bar) + offset; dev_dbg(&pdev->dev, "Setup PCI port: port %lx, irq %d, type %d\n", uart.port.iobase, uart.port.irq, uart.port.iotype); pericom->line[i] = serial8250_register_8250_port(&uart); if (pericom->line[i] < 0) { dev_err(&pdev->dev, "Couldn't register serial port %lx, irq %d, type %d, error %d\n", uart.port.iobase, uart.port.irq, uart.port.iotype, pericom->line[i]); break; } } pericom->nr = i; pci_set_drvdata(pdev, pericom); return 0; } static void pericom8250_remove(struct pci_dev *pdev) { struct pericom8250 *pericom = pci_get_drvdata(pdev); unsigned int i; for (i = 0; i < pericom->nr; i++) serial8250_unregister_port(pericom->line[i]); } static const struct pci_device_id pericom8250_pci_ids[] = { /* * Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART * (Only 7954 has an offset jump for port 4) */ { PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7951) }, { PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7952) }, { PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7954) }, { PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7958) }, /* * ACCES I/O Products quad * (Only 7954 has an offset jump for port 4) */ { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SDB) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2S) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SDB) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4S) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_8) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_8) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_2DB) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_2) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4DB) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_8) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SMDB) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2SM) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SM) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SMDB) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4SM) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_8SM) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_1) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_2) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_2) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2S) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4S) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_2) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_2) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_4) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2SM) }, { PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4SM) }, { } }; MODULE_DEVICE_TABLE(pci, pericom8250_pci_ids); static struct pci_driver pericom8250_pci_driver = { .name = "8250_pericom", .id_table = pericom8250_pci_ids, .probe = pericom8250_probe, .remove = pericom8250_remove, }; module_pci_driver(pericom8250_pci_driver); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Pericom UART driver");
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