^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Platform IDE driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2007 MontaVista Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Maintainer: Kumar Gala <galak@kernel.crashing.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/ide.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ioport.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/ata_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static void plat_ide_setup_ports(struct ide_hw *hw, void __iomem *base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) void __iomem *ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct pata_platform_info *pdata, int irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) unsigned long port = (unsigned long)base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) hw->io_ports.data_addr = port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) port += (1 << pdata->ioport_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) for (i = 1; i <= 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) i++, port += (1 << pdata->ioport_shift))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) hw->io_ports_array[i] = port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) hw->io_ports.ctl_addr = (unsigned long)ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) hw->irq = irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static const struct ide_port_info platform_ide_port_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .host_flags = IDE_HFLAG_NO_DMA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .chipset = ide_generic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int plat_ide_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct resource *res_base, *res_alt, *res_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) void __iomem *base, *alt_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct pata_platform_info *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct ide_host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) int ret = 0, mmio = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct ide_hw hw, *hws[] = { &hw };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct ide_port_info d = platform_ide_port_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* get a pointer to the register memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (!res_base || !res_alt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (!res_base || !res_alt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) mmio = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (!res_irq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (mmio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) base = devm_ioremap(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) res_base->start, resource_size(res_base));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) alt_base = devm_ioremap(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) res_alt->start, resource_size(res_alt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) base = devm_ioport_map(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) res_base->start, resource_size(res_base));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) alt_base = devm_ioport_map(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) res_alt->start, resource_size(res_alt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) memset(&hw, 0, sizeof(hw));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) hw.dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) d.irq_flags = res_irq->flags & IRQF_TRIGGER_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (res_irq->flags & IORESOURCE_IRQ_SHAREABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) d.irq_flags |= IRQF_SHARED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (mmio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) d.host_flags |= IDE_HFLAG_MMIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ret = ide_host_add(&d, hws, 1, &host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) platform_set_drvdata(pdev, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static int plat_ide_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct ide_host *host = dev_get_drvdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ide_host_remove(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static struct platform_driver platform_ide_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .name = "pata_platform",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .probe = plat_ide_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .remove = plat_ide_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) module_platform_driver(platform_ide_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) MODULE_DESCRIPTION("Platform IDE driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) MODULE_ALIAS("platform:pata_platform");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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