mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
bb9c8ae108
Since the devm_mmc_alloc_host() helper is already in use, sdhci_pltfm_free() is no longer needed. Cc: Avi Fishman <avifishman70@gmail.com> Cc: Tomer Maimon <tmaimon77@gmail.com> Cc: Tali Perry <tali.perry1@gmail.com> Cc: Patrick Venture <venture@google.com> Cc: Nancy Yuen <yuenn@google.com> Cc: Benjamin Fair <benjaminfair@google.com> Cc: openbmc@lists.ozlabs.org Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Link: https://lore.kernel.org/r/08f9a1f6c2a1ad908baaf01623cd9670bf540aa3.1749127796.git.zhoubinbin@loongson.cn Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* NPCM SDHC MMC host controller driver.
|
|
*
|
|
* Copyright (c) 2023 Nuvoton Technology corporation.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
#include <linux/mmc/host.h>
|
|
#include <linux/mmc/mmc.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
|
|
#include "sdhci-pltfm.h"
|
|
|
|
static const struct sdhci_pltfm_data npcm7xx_sdhci_pdata = {
|
|
.quirks = SDHCI_QUIRK_DELAY_AFTER_POWER,
|
|
.quirks2 = SDHCI_QUIRK2_STOP_WITH_TC |
|
|
SDHCI_QUIRK2_NO_1_8_V,
|
|
};
|
|
|
|
static const struct sdhci_pltfm_data npcm8xx_sdhci_pdata = {
|
|
.quirks = SDHCI_QUIRK_DELAY_AFTER_POWER,
|
|
.quirks2 = SDHCI_QUIRK2_STOP_WITH_TC,
|
|
};
|
|
|
|
static int npcm_sdhci_probe(struct platform_device *pdev)
|
|
{
|
|
const struct sdhci_pltfm_data *data;
|
|
struct sdhci_pltfm_host *pltfm_host;
|
|
struct device *dev = &pdev->dev;
|
|
struct sdhci_host *host;
|
|
u32 caps;
|
|
int ret;
|
|
|
|
data = of_device_get_match_data(dev);
|
|
if (!data)
|
|
return -EINVAL;
|
|
|
|
host = sdhci_pltfm_init(pdev, data, 0);
|
|
if (IS_ERR(host))
|
|
return PTR_ERR(host);
|
|
|
|
pltfm_host = sdhci_priv(host);
|
|
|
|
pltfm_host->clk = devm_clk_get_optional_enabled(dev, NULL);
|
|
if (IS_ERR(pltfm_host->clk)) {
|
|
return PTR_ERR(pltfm_host->clk);
|
|
}
|
|
|
|
caps = sdhci_readl(host, SDHCI_CAPABILITIES);
|
|
if (caps & SDHCI_CAN_DO_8BIT)
|
|
host->mmc->caps |= MMC_CAP_8_BIT_DATA;
|
|
|
|
ret = mmc_of_parse(host->mmc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return sdhci_add_host(host);
|
|
}
|
|
|
|
static const struct of_device_id npcm_sdhci_of_match[] = {
|
|
{ .compatible = "nuvoton,npcm750-sdhci", .data = &npcm7xx_sdhci_pdata },
|
|
{ .compatible = "nuvoton,npcm845-sdhci", .data = &npcm8xx_sdhci_pdata },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, npcm_sdhci_of_match);
|
|
|
|
static struct platform_driver npcm_sdhci_driver = {
|
|
.driver = {
|
|
.name = "npcm-sdhci",
|
|
.of_match_table = npcm_sdhci_of_match,
|
|
.pm = &sdhci_pltfm_pmops,
|
|
},
|
|
.probe = npcm_sdhci_probe,
|
|
.remove = sdhci_pltfm_remove,
|
|
};
|
|
module_platform_driver(npcm_sdhci_driver);
|
|
|
|
MODULE_DESCRIPTION("NPCM Secure Digital Host Controller Interface driver");
|
|
MODULE_AUTHOR("Tomer Maimon <tomer.maimon@nuvoton.com>");
|
|
MODULE_LICENSE("GPL");
|