^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * cs5535-mfd.c - core MFD driver for CS5535/CS5536 southbridges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * The CS5535 and CS5536 has an ISA bridge on the PCI bus that is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * used for accessing GPIOs, MFGPTs, ACPI, etc. Each subdevice has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * an IO range that's specified in a single BAR. The BAR order is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * hardcoded in the CS553x specifications.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (c) 2010 Andres Salomon <dilinger@queued.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/olpc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define DRV_NAME "cs5535-mfd"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) enum cs5535_mfd_bars {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) SMB_BAR = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) GPIO_BAR = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MFGPT_BAR = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) PMS_BAR = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) ACPI_BAR = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) NR_BARS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static struct resource cs5535_mfd_resources[NR_BARS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct mfd_cell cs5535_mfd_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .name = "cs5535-smb",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) .resources = &cs5535_mfd_resources[SMB_BAR],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) .name = "cs5535-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .resources = &cs5535_mfd_resources[GPIO_BAR],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) .name = "cs5535-mfgpt",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .resources = &cs5535_mfd_resources[MFGPT_BAR],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .name = "cs5535-pms",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) .resources = &cs5535_mfd_resources[PMS_BAR],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static struct mfd_cell cs5535_olpc_mfd_cells[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .name = "olpc-xo1-pm-acpi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .resources = &cs5535_mfd_resources[ACPI_BAR],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .name = "olpc-xo1-sci-acpi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .num_resources = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .resources = &cs5535_mfd_resources[ACPI_BAR],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int cs5535_mfd_probe(struct pci_dev *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) const struct pci_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int err, bar;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) err = pci_enable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) for (bar = 0; bar < NR_BARS; bar++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct resource *r = &cs5535_mfd_resources[bar];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) r->flags = IORESOURCE_IO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) r->start = pci_resource_start(pdev, bar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) r->end = pci_resource_end(pdev, bar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) err = pci_request_region(pdev, PMS_BAR, DRV_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) dev_err(&pdev->dev, "Failed to request PMS_BAR's IO region\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) goto err_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) err = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, cs5535_mfd_cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ARRAY_SIZE(cs5535_mfd_cells), NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) "Failed to add CS5535 sub-devices: %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) goto err_release_pms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (machine_is_olpc()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) err = pci_request_region(pdev, ACPI_BAR, DRV_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) "Failed to request ACPI_BAR's IO region\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) goto err_remove_devices;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) err = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) cs5535_olpc_mfd_cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ARRAY_SIZE(cs5535_olpc_mfd_cells),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) "Failed to add CS5535 OLPC sub-devices: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) goto err_release_acpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) dev_info(&pdev->dev, "%zu devices registered.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ARRAY_SIZE(cs5535_mfd_cells));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) err_release_acpi:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) pci_release_region(pdev, ACPI_BAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) err_remove_devices:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) mfd_remove_devices(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) err_release_pms:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) pci_release_region(pdev, PMS_BAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) err_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) pci_disable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static void cs5535_mfd_remove(struct pci_dev *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) mfd_remove_devices(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (machine_is_olpc())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) pci_release_region(pdev, ACPI_BAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) pci_release_region(pdev, PMS_BAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) pci_disable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static const struct pci_device_id cs5535_mfd_pci_tbl[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_ISA) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) { 0, }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) MODULE_DEVICE_TABLE(pci, cs5535_mfd_pci_tbl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static struct pci_driver cs5535_mfd_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .name = DRV_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .id_table = cs5535_mfd_pci_tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .probe = cs5535_mfd_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .remove = cs5535_mfd_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) module_pci_driver(cs5535_mfd_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) MODULE_AUTHOR("Andres Salomon <dilinger@queued.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) MODULE_DESCRIPTION("MFD driver for CS5535/CS5536 southbridge's ISA PCI device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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