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584259d424
Use sdhci_pltfm_remove() instead of sdhci_pltfm_unregister() so that devm_clk_get_enabled() can be used for pltfm_host->clk. This has the side effect that the order of operations on the error path and remove path is not the same as it was before, but should be safe nevertheless. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230811130351.7038-6-adrian.hunter@intel.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* sdhci-dove.c Support for SDHCI on Marvell's Dove SoC
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*
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* Author: Saeed Bishara <saeed@marvell.com>
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* Mike Rapoport <mike@compulab.co.il>
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* Based on sdhci-cns3xxx.c
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*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/mmc/host.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include "sdhci-pltfm.h"
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static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
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{
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u16 ret;
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switch (reg) {
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case SDHCI_HOST_VERSION:
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case SDHCI_SLOT_INT_STATUS:
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/* those registers don't exist */
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return 0;
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default:
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ret = readw(host->ioaddr + reg);
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}
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return ret;
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}
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static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
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{
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u32 ret;
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ret = readl(host->ioaddr + reg);
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switch (reg) {
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case SDHCI_CAPABILITIES:
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/* Mask the support for 3.0V */
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ret &= ~SDHCI_CAN_VDD_300;
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break;
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}
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return ret;
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}
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static const struct sdhci_ops sdhci_dove_ops = {
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.read_w = sdhci_dove_readw,
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.read_l = sdhci_dove_readl,
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.set_clock = sdhci_set_clock,
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.set_bus_width = sdhci_set_bus_width,
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.reset = sdhci_reset,
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.set_uhs_signaling = sdhci_set_uhs_signaling,
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};
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static const struct sdhci_pltfm_data sdhci_dove_pdata = {
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.ops = &sdhci_dove_ops,
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.quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
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SDHCI_QUIRK_NO_BUSY_IRQ |
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SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
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SDHCI_QUIRK_FORCE_DMA |
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SDHCI_QUIRK_NO_HISPD_BIT,
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};
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static int sdhci_dove_probe(struct platform_device *pdev)
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{
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struct sdhci_host *host;
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struct sdhci_pltfm_host *pltfm_host;
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int ret;
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host = sdhci_pltfm_init(pdev, &sdhci_dove_pdata, 0);
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if (IS_ERR(host))
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return PTR_ERR(host);
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pltfm_host = sdhci_priv(host);
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pltfm_host->clk = devm_clk_get_enabled(&pdev->dev, NULL);
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ret = mmc_of_parse(host->mmc);
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if (ret)
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goto err_sdhci_add;
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ret = sdhci_add_host(host);
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if (ret)
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goto err_sdhci_add;
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return 0;
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err_sdhci_add:
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sdhci_pltfm_free(pdev);
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return ret;
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}
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static const struct of_device_id sdhci_dove_of_match_table[] = {
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{ .compatible = "marvell,dove-sdhci", },
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{}
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};
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MODULE_DEVICE_TABLE(of, sdhci_dove_of_match_table);
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static struct platform_driver sdhci_dove_driver = {
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.driver = {
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.name = "sdhci-dove",
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.probe_type = PROBE_PREFER_ASYNCHRONOUS,
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.pm = &sdhci_pltfm_pmops,
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.of_match_table = sdhci_dove_of_match_table,
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},
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.probe = sdhci_dove_probe,
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.remove_new = sdhci_pltfm_remove,
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};
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module_platform_driver(sdhci_dove_driver);
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MODULE_DESCRIPTION("SDHCI driver for Dove");
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MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>, "
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"Mike Rapoport <mike@compulab.co.il>");
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MODULE_LICENSE("GPL v2");
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