src/southbridge/ti/pci1x2x/pci1x2x.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <device/device.h>
   4 #include <device/pci.h>
   5 #include <device/pci_ids.h>
   6 #include <device/pci_ops.h>
   7 #include <device/cardbus.h>
   8 #include <console/console.h>
   9 #include "chip.h"
  10
  11 static void ti_pci1x2y_init(struct device *dev)
  12 {
  13         printk(BIOS_INFO, "Init of Texas Instruments PCI1x2x PCMCIA/CardBus controller\n");
  14         struct southbridge_ti_pci1x2x_config *conf = dev->chip_info;
  15
  16         if (conf) {
  17                 /* System control (offset 0x80) */
  18                 pci_write_config32(dev, 0x80, conf->scr);
  19                 /* Multifunction routing */
  20                 pci_write_config32(dev, 0x8C, conf->mrr);
  21         }
  22         /* Set the device control register (0x92) accordingly. */
  23         pci_write_config8(dev, 0x92, pci_read_config8(dev, 0x92) | 0x02);
  24 }
  25
  26 static void ti_pci1x2y_set_subsystem(struct device *dev, unsigned int vendor,
  27                                      unsigned int device)
  28 {
  29         /*
  30          * Enable change sub-vendor ID. Clear the bit 5 to enable to write
  31          * to the sub-vendor/device ids at 40 and 42.
  32          */
  33         pci_write_config32(dev, 0x80, pci_read_config32(dev, 0x080) & ~0x10);
  34         pci_dev_set_subsystem(dev, vendor, device);
  35         pci_write_config32(dev, 0x80, pci_read_config32(dev, 0x80) | 0x10);
  36 }
  37
  38 static struct pci_operations ti_pci1x2y_pci_ops = {
  39         .set_subsystem = ti_pci1x2y_set_subsystem,
  40 };
  41
  42 struct device_operations southbridge_ti_pci1x2x_pciops = {
  43         .read_resources   = cardbus_read_resources,
  44         .set_resources    = pci_dev_set_resources,
  45         .enable_resources = cardbus_enable_resources,
  46         .init             = ti_pci1x2y_init,
  47         .ops_pci          = &ti_pci1x2y_pci_ops,
  48 };
  49
  50 static const struct pci_driver ti_pci1225_driver __pci_driver = {
  51         .ops    = &southbridge_ti_pci1x2x_pciops,
  52         .vendor = PCI_VID_TI,
  53         .device = PCI_DID_TI_1225,
  54 };
  55
  56 static const struct pci_driver ti_pci1420_driver __pci_driver = {
  57         .ops    = &southbridge_ti_pci1x2x_pciops,
  58         .vendor = PCI_VID_TI,
  59         .device = PCI_DID_TI_1420,
  60 };
  61
  62 static const struct pci_driver ti_pci1510_driver __pci_driver = {
  63         .ops    = &southbridge_ti_pci1x2x_pciops,
  64         .vendor = PCI_VID_TI,
  65         .device = PCI_DID_TI_1510,
  66 };
  67
  68 static const struct pci_driver ti_pci1520_driver __pci_driver = {
  69         .ops    = &southbridge_ti_pci1x2x_pciops,
  70         .vendor = PCI_VID_TI,
  71         .device = PCI_DID_TI_1520,
  72 };
  73
  74 struct chip_operations southbridge_ti_pci1x2x_ops = {
  75         .name = "TI PCI1x2x Cardbus controller",
  76 };