Angel Pons | 182dbde | 2020-04-02 23:49:05 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 2 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 3 | #include <device/device.h> |
| 4 | #include <device/path.h> |
| 5 | #include <device/smbus.h> |
| 6 | #include <device/pci.h> |
Elyes HAOUAS | a4dd33c | 2020-08-11 09:39:43 +0200 | [diff] [blame] | 7 | #include <device/pci_def.h> |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 8 | #include <device/pci_ids.h> |
| 9 | #include <device/pci_ops.h> |
Kyösti Mälkki | 1cae454 | 2020-01-06 12:31:34 +0200 | [diff] [blame] | 10 | #include <device/smbus_host.h> |
Angel Pons | 79b2a15 | 2020-12-05 20:43:00 +0100 | [diff] [blame] | 11 | #include <southbridge/intel/common/smbus_ops.h> |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 12 | #include "pch.h" |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 13 | |
Elyes HAOUAS | 4aec340 | 2018-05-25 08:29:27 +0200 | [diff] [blame] | 14 | static void pch_smbus_init(struct device *dev) |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 15 | { |
| 16 | struct resource *res; |
| 17 | u16 reg16; |
| 18 | |
| 19 | /* Enable clock gating */ |
Angel Pons | c803f65 | 2020-06-07 22:09:01 +0200 | [diff] [blame] | 20 | /* FIXME: Using 32-bit ops with a 16-bit variable is a bug! These should be 16-bit! */ |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 21 | reg16 = pci_read_config32(dev, 0x80); |
| 22 | reg16 &= ~((1 << 8)|(1 << 10)|(1 << 12)|(1 << 14)); |
| 23 | pci_write_config32(dev, 0x80, reg16); |
| 24 | |
| 25 | /* Set Receive Slave Address */ |
| 26 | res = find_resource(dev, PCI_BASE_ADDRESS_4); |
| 27 | if (res) |
Kyösti Mälkki | 73451fd | 2020-01-06 19:00:31 +0200 | [diff] [blame] | 28 | smbus_set_slave_addr(res->base, SMBUS_SLAVE_ADDR); |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 29 | } |
| 30 | |
Aaron Durbin | aa090cb | 2017-09-13 16:01:52 -0600 | [diff] [blame] | 31 | static const char *smbus_acpi_name(const struct device *dev) |
Patrick Rudolph | 604f698 | 2017-06-07 09:46:52 +0200 | [diff] [blame] | 32 | { |
| 33 | return "SBUS"; |
| 34 | } |
| 35 | |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 36 | static struct device_operations smbus_ops = { |
| 37 | .read_resources = smbus_read_resources, |
| 38 | .set_resources = pci_dev_set_resources, |
| 39 | .enable_resources = pci_dev_enable_resources, |
Kyösti Mälkki | d0e212c | 2015-02-26 20:47:47 +0200 | [diff] [blame] | 40 | .scan_bus = scan_smbus, |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 41 | .init = pch_smbus_init, |
| 42 | .ops_smbus_bus = &lops_smbus_bus, |
Angel Pons | 1fc0edd | 2020-05-31 00:03:28 +0200 | [diff] [blame] | 43 | .ops_pci = &pci_dev_ops_pci, |
Patrick Rudolph | 604f698 | 2017-06-07 09:46:52 +0200 | [diff] [blame] | 44 | .acpi_name = smbus_acpi_name, |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 45 | }; |
| 46 | |
Stefan Reinauer | 9a380ab | 2012-06-22 13:16:11 -0700 | [diff] [blame] | 47 | static const unsigned short pci_device_ids[] = { 0x1c22, 0x1e22, 0 }; |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 48 | |
Stefan Reinauer | 9a380ab | 2012-06-22 13:16:11 -0700 | [diff] [blame] | 49 | static const struct pci_driver pch_smbus __pci_driver = { |
| 50 | .ops = &smbus_ops, |
| 51 | .vendor = PCI_VENDOR_ID_INTEL, |
| 52 | .devices = pci_device_ids, |
Stefan Reinauer | 8e07382 | 2012-04-04 00:07:22 +0200 | [diff] [blame] | 53 | }; |