mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 14:56:39 +07:00
7263bd3925
Change clk_enable/disable() calls to clk_prepare_enable() and clk_disable_unprepare(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
242 lines
5.5 KiB
C
242 lines
5.5 KiB
C
/*
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* Toshiba TC6387XB support
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* Copyright (c) 2005 Ian Molton
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This file contains TC6387XB base support.
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*
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/tmio.h>
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#include <linux/mfd/tc6387xb.h>
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#include <linux/slab.h>
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enum {
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TC6387XB_CELL_MMC,
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};
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struct tc6387xb {
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void __iomem *scr;
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struct clk *clk32k;
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struct resource rscr;
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};
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static struct resource tc6387xb_mmc_resources[] = {
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{
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.start = 0x800,
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.end = 0x9ff,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = 0,
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.end = 0,
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.flags = IORESOURCE_IRQ,
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},
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};
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/*--------------------------------------------------------------------------*/
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#ifdef CONFIG_PM
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static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state)
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{
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
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if (pdata && pdata->suspend)
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pdata->suspend(dev);
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clk_disable_unprepare(tc6387xb->clk32k);
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return 0;
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}
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static int tc6387xb_resume(struct platform_device *dev)
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{
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
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clk_prepare_enable(tc6387xb->clk32k);
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if (pdata && pdata->resume)
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pdata->resume(dev);
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tmio_core_mmc_resume(tc6387xb->scr + 0x200, 0,
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tc6387xb_mmc_resources[0].start & 0xfffe);
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return 0;
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}
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#else
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#define tc6387xb_suspend NULL
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#define tc6387xb_resume NULL
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#endif
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/*--------------------------------------------------------------------------*/
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static void tc6387xb_mmc_pwr(struct platform_device *mmc, int state)
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{
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struct platform_device *dev = to_platform_device(mmc->dev.parent);
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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tmio_core_mmc_pwr(tc6387xb->scr + 0x200, 0, state);
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}
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static void tc6387xb_mmc_clk_div(struct platform_device *mmc, int state)
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{
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struct platform_device *dev = to_platform_device(mmc->dev.parent);
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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tmio_core_mmc_clk_div(tc6387xb->scr + 0x200, 0, state);
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}
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static int tc6387xb_mmc_enable(struct platform_device *mmc)
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{
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struct platform_device *dev = to_platform_device(mmc->dev.parent);
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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clk_prepare_enable(tc6387xb->clk32k);
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tmio_core_mmc_enable(tc6387xb->scr + 0x200, 0,
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tc6387xb_mmc_resources[0].start & 0xfffe);
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return 0;
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}
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static int tc6387xb_mmc_disable(struct platform_device *mmc)
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{
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struct platform_device *dev = to_platform_device(mmc->dev.parent);
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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clk_disable_unprepare(tc6387xb->clk32k);
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return 0;
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}
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static struct tmio_mmc_data tc6387xb_mmc_data = {
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.hclk = 24000000,
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.set_pwr = tc6387xb_mmc_pwr,
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.set_clk_div = tc6387xb_mmc_clk_div,
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};
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/*--------------------------------------------------------------------------*/
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static const struct mfd_cell tc6387xb_cells[] = {
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[TC6387XB_CELL_MMC] = {
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.name = "tmio-mmc",
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.enable = tc6387xb_mmc_enable,
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.disable = tc6387xb_mmc_disable,
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.platform_data = &tc6387xb_mmc_data,
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.pdata_size = sizeof(tc6387xb_mmc_data),
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.num_resources = ARRAY_SIZE(tc6387xb_mmc_resources),
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.resources = tc6387xb_mmc_resources,
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},
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};
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static int tc6387xb_probe(struct platform_device *dev)
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{
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struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
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struct resource *iomem, *rscr;
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struct clk *clk32k;
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struct tc6387xb *tc6387xb;
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int irq, ret;
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iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
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if (!iomem)
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return -EINVAL;
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tc6387xb = kzalloc(sizeof(*tc6387xb), GFP_KERNEL);
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if (!tc6387xb)
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return -ENOMEM;
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ret = platform_get_irq(dev, 0);
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if (ret >= 0)
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irq = ret;
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else
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goto err_no_irq;
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clk32k = clk_get(&dev->dev, "CLK_CK32K");
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if (IS_ERR(clk32k)) {
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ret = PTR_ERR(clk32k);
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goto err_no_clk;
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}
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rscr = &tc6387xb->rscr;
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rscr->name = "tc6387xb-core";
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rscr->start = iomem->start;
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rscr->end = iomem->start + 0xff;
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rscr->flags = IORESOURCE_MEM;
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ret = request_resource(iomem, rscr);
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if (ret)
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goto err_resource;
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tc6387xb->scr = ioremap(rscr->start, resource_size(rscr));
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if (!tc6387xb->scr) {
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ret = -ENOMEM;
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goto err_ioremap;
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}
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tc6387xb->clk32k = clk32k;
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platform_set_drvdata(dev, tc6387xb);
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if (pdata && pdata->enable)
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pdata->enable(dev);
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dev_info(&dev->dev, "Toshiba tc6387xb initialised\n");
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ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells,
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ARRAY_SIZE(tc6387xb_cells), iomem, irq, NULL);
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if (!ret)
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return 0;
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iounmap(tc6387xb->scr);
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err_ioremap:
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release_resource(&tc6387xb->rscr);
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err_resource:
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clk_put(clk32k);
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err_no_clk:
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err_no_irq:
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kfree(tc6387xb);
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return ret;
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}
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static int tc6387xb_remove(struct platform_device *dev)
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{
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struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
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mfd_remove_devices(&dev->dev);
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iounmap(tc6387xb->scr);
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release_resource(&tc6387xb->rscr);
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clk_disable_unprepare(tc6387xb->clk32k);
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clk_put(tc6387xb->clk32k);
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kfree(tc6387xb);
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return 0;
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}
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static struct platform_driver tc6387xb_platform_driver = {
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.driver = {
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.name = "tc6387xb",
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},
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.probe = tc6387xb_probe,
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.remove = tc6387xb_remove,
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.suspend = tc6387xb_suspend,
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.resume = tc6387xb_resume,
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};
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module_platform_driver(tc6387xb_platform_driver);
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MODULE_DESCRIPTION("Toshiba TC6387XB core driver");
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Ian Molton");
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MODULE_ALIAS("platform:tc6387xb");
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