1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <stdint.h>
4 #include <console/console.h>
5 #include <device/device.h>
6 #include <device/pci.h>
7 #include <device/pci_ops.h>
8 #include <device/cardbus.h>
9
pci7xx1_enable(struct device * const dev)10 static void pci7xx1_enable(struct device *const dev)
11 {
12 printk(BIOS_DEBUG, "%s: TI PCI7xx1 media controller\n", __func__);
13 if (PCI_FUNC(dev->path.pci.devfn) == 0) {
14 const unsigned int slot = PCI_SLOT(dev->path.pci.devfn);
15
16 int fn;
17
18 /* Hide functions based on devicetree info. */
19 u16 gcr = pci_read_config16(dev, 0x86);
20 for (fn = 5; fn > 0; --fn) {
21 const struct device *const d =
22 pcidev_path_behind(dev->upstream, PCI_DEVFN(slot, fn));
23 if (!d || d->enabled) continue;
24 printk(BIOS_DEBUG,
25 "%s: Hiding function #%d.\n", __func__, fn);
26 switch (fn) {
27 case 1: gcr |= 1 << 4; break; /* CardBus B */
28 case 2: gcr |= 1 << 3; break; /* OHCI 1394 */
29 case 3: gcr |= 1 << 5; break; /* Flash media */
30 case 4: gcr |= 1 << 6; break; /* SD card */
31 case 5: gcr |= 1 << 7; break; /* Smart Card */
32 }
33 }
34 pci_write_config16(dev, 0x86, gcr);
35 }
36 }
37
38 static struct device_operations device_ops = {
39 .read_resources = cardbus_read_resources,
40 .set_resources = pci_dev_set_resources,
41 .enable_resources = cardbus_enable_resources,
42 .init = 0,
43 .scan_bus = pci_scan_bridge,
44 .enable = pci7xx1_enable,
45 .reset_bus = pci_bus_reset,
46 };
47
48 static const struct pci_driver ti_pci7xx1 __pci_driver = {
49 .ops = &device_ops,
50 .vendor = 0x104c,
51 .device = 0x8031,
52 };
53