+// SPDX-License-Identifier: GPL-2.0-only
/*
* Sony MemoryStick support
*
* Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* Special thanks to Carlos Corbacho for providing various MemoryStick cards
* that made this driver possible.
- *
*/
#include <linux/memstick.h>
return -ENOMEM;
rc = bus_register(&memstick_bus_type);
- if (!rc)
- rc = class_register(&memstick_host_class);
+ if (rc)
+ goto error_destroy_workqueue;
- if (!rc)
- return 0;
+ rc = class_register(&memstick_host_class);
+ if (rc)
+ goto error_bus_unregister;
+
+ return 0;
+ error_bus_unregister:
bus_unregister(&memstick_bus_type);
+ error_destroy_workqueue:
destroy_workqueue(workqueue);
return rc;
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Debugfs support for hosts and cards
*
* Copyright (C) 2008 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/moduleparam.h>
#include <linux/export.h>
struct dentry *root;
root = debugfs_create_dir(mmc_hostname(host), NULL);
- if (IS_ERR(root))
- /* Don't complain -- debugfs just isn't enabled */
- return;
- if (!root)
- /* Complain -- debugfs is enabled, but it failed to
- * create the directory. */
- goto err_root;
-
host->debugfs_root = root;
- if (!debugfs_create_file("ios", S_IRUSR, root, host, &mmc_ios_fops))
- goto err_node;
-
- if (!debugfs_create_x32("caps", S_IRUSR, root, &host->caps))
- goto err_node;
-
- if (!debugfs_create_x32("caps2", S_IRUSR, root, &host->caps2))
- goto err_node;
-
- if (!debugfs_create_file("clock", S_IRUSR | S_IWUSR, root, host,
- &mmc_clock_fops))
- goto err_node;
+ debugfs_create_file("ios", S_IRUSR, root, host, &mmc_ios_fops);
+ debugfs_create_x32("caps", S_IRUSR, root, &host->caps);
+ debugfs_create_x32("caps2", S_IRUSR, root, &host->caps2);
+ debugfs_create_file("clock", S_IRUSR | S_IWUSR, root, host,
+ &mmc_clock_fops);
#ifdef CONFIG_FAIL_MMC_REQUEST
if (fail_request)
setup_fault_attr(&fail_default_attr, fail_request);
host->fail_mmc_request = fail_default_attr;
- if (IS_ERR(fault_create_debugfs_attr("fail_mmc_request",
- root,
- &host->fail_mmc_request)))
- goto err_node;
+ fault_create_debugfs_attr("fail_mmc_request", root,
+ &host->fail_mmc_request);
#endif
- return;
-
- err_node:
- debugfs_remove_recursive(root);
- host->debugfs_root = NULL;
- err_root:
- dev_err(&host->class_dev, "failed to initialize debugfs\n");
}
void mmc_remove_host_debugfs(struct mmc_host *host)
return;
root = debugfs_create_dir(mmc_card_id(card), host->debugfs_root);
- if (IS_ERR(root))
- /* Don't complain -- debugfs just isn't enabled */
- return;
- if (!root)
- /* Complain -- debugfs is enabled, but it failed to
- * create the directory. */
- goto err;
-
card->debugfs_root = root;
- if (!debugfs_create_x32("state", S_IRUSR, root, &card->state))
- goto err;
-
- return;
-
- err:
- debugfs_remove_recursive(root);
- card->debugfs_root = NULL;
- dev_err(&card->dev, "failed to initialize debugfs\n");
+ debugfs_create_x32("state", S_IRUSR, root, &card->state);
}
void mmc_remove_card_debugfs(struct mmc_card *card)
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2003 Russell King, All Rights Reserved.
* Copyright 2006-2007 Pierre Ossman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
*/
#include <linux/slab.h>
#include <linux/module.h>
static void mmc_setup_queue(struct mmc_queue *mq, struct mmc_card *card)
{
struct mmc_host *host = card->host;
- u64 limit = BLK_BOUNCE_HIGH;
unsigned block_size = 512;
- if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
- limit = (u64)dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT;
-
blk_queue_flag_set(QUEUE_FLAG_NONROT, mq->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, mq->queue);
if (mmc_can_erase(card))
mmc_queue_setup_discard(mq->queue, card);
- blk_queue_bounce_limit(mq->queue, limit);
+ if (!mmc_dev(host)->dma_mask || !*mmc_dev(host)->dma_mask)
+ blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_HIGH);
blk_queue_max_hw_sectors(mq->queue,
min(host->max_blk_count, host->max_req_size / 512));
blk_queue_max_segments(mq->queue, host->max_segs);
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2007, Google Inc.
* Copyright 2012, Intel Inc.
* Written by Tuukka Tikkanen and Juha Yrjölä <juha.yrjola@nokia.com>
* Misc hacks here and there by Tony Lindgren <tony@atomide.com>
* Other hacks (DMA, SD, etc) by David Brownell
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/module.h>
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
- struct mmc_host *mmc;
struct device *dev;
unsigned char id; /* 16xx chips have 2 MMC blocks */
void *virt_base;
resptype = 3;
break;
default:
- dev_err(mmc_dev(host->mmc),
+ dev_err(mmc_dev(mmc_from_priv(host)),
"Invalid response type: %04x\n", mmc_resp_type(cmd));
break;
}
data->sg->length);
}
host->data->bytes_xfered += data->sg->length;
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
- dma_data_dir);
+ dma_unmap_sg(mmc_dev(mmc_from_priv(host)), data->sg,
+ host->sg_len, dma_data_dir);
}
host->data = NULL;
if (!data->stop) {
host->mrq = NULL;
- mmc_request_done(host->mmc, data->mrq);
+ mmc_request_done(mmc_from_priv(host), data->mrq);
return;
}
if (host->data == NULL || cmd->error) {
host->mrq = NULL;
- mmc_request_done(host->mmc, cmd->mrq);
+ mmc_request_done(mmc_from_priv(host), cmd->mrq);
}
}
struct mmc_request *mrq = host->mrq;
mrq->cmd->error = -ETIMEDOUT;
host->mrq = NULL;
- mmc_request_done(host->mmc, mrq);
+ mmc_request_done(mmc_from_priv(host), mrq);
}
if (end_command)
u32 state = GOLDFISH_MMC_READ(host, MMC_STATE);
pr_info("%s: Card detect now %d\n", __func__,
(state & MMC_STATE_INSERTED));
- mmc_detect_change(host->mmc, 0);
+ mmc_detect_change(mmc_from_priv(host), 0);
}
if (!end_command && !end_transfer && !state_changed && !cmd_timeout) {
status = GOLDFISH_MMC_READ(host, MMC_INT_STATUS);
- dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status);
+ dev_info(mmc_dev(mmc_from_priv(host)), "spurious irq 0x%04x\n",
+ status);
if (status != 0) {
GOLDFISH_MMC_WRITE(host, MMC_INT_STATUS, status);
GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE, 0);
dma_data_dir = mmc_get_dma_dir(data);
- host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
+ host->sg_len = dma_map_sg(mmc_dev(mmc_from_priv(host)), data->sg,
sg_len, dma_data_dir);
host->dma_done = 0;
host->dma_in_use = 1;
}
host = mmc_priv(mmc);
- host->mmc = mmc;
pr_err("mmc: Mapping %lX to %lX\n", (long)res->start, (long)res->end);
host->reg_base = ioremap(res->start, resource_size(res));
ret = device_create_file(&pdev->dev, &dev_attr_cover_switch);
if (ret)
- dev_warn(mmc_dev(host->mmc),
- "Unable to create sysfs attributes\n");
+ dev_warn(mmc_dev(mmc), "Unable to create sysfs attributes\n");
GOLDFISH_MMC_WRITE(host, MMC_SET_BUFFER, host->phys_base);
GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE,
dma_alloc_failed:
iounmap(host->reg_base);
ioremap_failed:
- mmc_free_host(host->mmc);
+ mmc_free_host(mmc);
err_alloc_host_failed:
return ret;
}
static int goldfish_mmc_remove(struct platform_device *pdev)
{
struct goldfish_mmc_host *host = platform_get_drvdata(pdev);
+ struct mmc_host *mmc = mmc_from_priv(host);
BUG_ON(host == NULL);
- mmc_remove_host(host->mmc);
+ mmc_remove_host(mmc);
free_irq(host->irq, host);
dma_free_coherent(&pdev->dev, BUFFER_SIZE, host->virt_base, host->phys_base);
iounmap(host->reg_base);
- mmc_free_host(host->mmc);
+ mmc_free_host(mmc);
return 0;
}
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Atmel MultiMedia Card Interface driver
*
* Copyright (C) 2004-2008 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/blkdev.h>
#include <linux/clk.h>
struct mmc_host *mmc = slot->mmc;
struct atmel_mci *host = slot->host;
struct dentry *root;
- struct dentry *node;
root = mmc->debugfs_root;
if (!root)
return;
- node = debugfs_create_file("regs", S_IRUSR, root, host,
- &atmci_regs_fops);
- if (IS_ERR(node))
- return;
- if (!node)
- goto err;
-
- node = debugfs_create_file("req", S_IRUSR, root, slot,
- &atmci_req_fops);
- if (!node)
- goto err;
-
- node = debugfs_create_u32("state", S_IRUSR, root, (u32 *)&host->state);
- if (!node)
- goto err;
-
- node = debugfs_create_x32("pending_events", S_IRUSR, root,
- (u32 *)&host->pending_events);
- if (!node)
- goto err;
-
- node = debugfs_create_x32("completed_events", S_IRUSR, root,
- (u32 *)&host->completed_events);
- if (!node)
- goto err;
-
- return;
-
- err:
- dev_err(&mmc->class_dev, "failed to initialize debugfs for slot\n");
+ debugfs_create_file("regs", S_IRUSR, root, host, &atmci_regs_fops);
+ debugfs_create_file("req", S_IRUSR, root, slot, &atmci_req_fops);
+ debugfs_create_u32("state", S_IRUSR, root, (u32 *)&host->state);
+ debugfs_create_x32("pending_events", S_IRUSR, root,
+ (u32 *)&host->pending_events);
+ debugfs_create_x32("completed_events", S_IRUSR, root,
+ (u32 *)&host->completed_events);
}
#if defined(CONFIG_OF)
-// SPDX-License-Identifier: GPL-2.0
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Amlogic SD/eMMC driver for the GX/S905 family SoCs
*
#define SD_EMMC_TXD 0x94
#define SD_EMMC_LAST_REG SD_EMMC_TXD
+ #define SD_EMMC_SRAM_DATA_BUF_LEN 1536
+ #define SD_EMMC_SRAM_DATA_BUF_OFF 0x200
+
#define SD_EMMC_CFG_BLK_SIZE 512 /* internal buffer max: 512 bytes */
#define SD_EMMC_CFG_RESP_TIMEOUT 256 /* in clock cycles */
#define SD_EMMC_CMD_TIMEOUT 1024 /* in ms */
unsigned long req_rate;
bool ddr;
+ bool dram_access_quirk;
+
struct pinctrl *pinctrl;
struct pinctrl_state *pins_default;
struct pinctrl_state *pins_clk_gate;
static void meson_mmc_get_transfer_mode(struct mmc_host *mmc,
struct mmc_request *mrq)
{
+ struct meson_host *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
struct scatterlist *sg;
int i;
bool use_desc_chain_mode = true;
+ /*
+ * When Controller DMA cannot directly access DDR memory, disable
+ * support for Chain Mode to directly use the internal SRAM using
+ * the bounce buffer mode.
+ */
+ if (host->dram_access_quirk)
+ return;
+
/*
* Broken SDIO with AP6255-based WiFi on Khadas VIM Pro has been
* reported. For some strange reason this occurs in descriptor
host->dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, host);
+ /* The G12A SDIO Controller needs an SRAM bounce buffer */
+ host->dram_access_quirk = device_property_read_bool(&pdev->dev,
+ "amlogic,dram-access-quirk");
+
/* Get regulators and the supported OCR mask */
host->vqmmc_enabled = false;
ret = mmc_regulator_get_supply(mmc);
goto err_init_clk;
mmc->caps |= MMC_CAP_CMD23;
- mmc->max_blk_count = CMD_CFG_LENGTH_MASK;
+ if (host->dram_access_quirk) {
+ /* Limit to the available sram memory */
+ mmc->max_segs = SD_EMMC_SRAM_DATA_BUF_LEN / mmc->max_blk_size;
+ mmc->max_blk_count = mmc->max_segs;
+ } else {
+ mmc->max_blk_count = CMD_CFG_LENGTH_MASK;
+ mmc->max_segs = SD_EMMC_DESC_BUF_LEN /
+ sizeof(struct sd_emmc_desc);
+ }
mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size;
- mmc->max_segs = SD_EMMC_DESC_BUF_LEN / sizeof(struct sd_emmc_desc);
mmc->max_seg_size = mmc->max_req_size;
/*
*/
mmc->caps2 &= ~MMC_CAP2_HS400;
- /* data bounce buffer */
- host->bounce_buf_size = mmc->max_req_size;
- host->bounce_buf =
- dma_alloc_coherent(host->dev, host->bounce_buf_size,
- &host->bounce_dma_addr, GFP_KERNEL);
- if (host->bounce_buf == NULL) {
- dev_err(host->dev, "Unable to map allocate DMA bounce buffer.\n");
- ret = -ENOMEM;
- goto err_free_irq;
+ if (host->dram_access_quirk) {
+ /*
+ * The MMC Controller embeds 1,5KiB of internal SRAM
+ * that can be used to be used as bounce buffer.
+ * In the case of the G12A SDIO controller, use these
+ * instead of the DDR memory
+ */
+ host->bounce_buf_size = SD_EMMC_SRAM_DATA_BUF_LEN;
+ host->bounce_buf = host->regs + SD_EMMC_SRAM_DATA_BUF_OFF;
+ host->bounce_dma_addr = res->start + SD_EMMC_SRAM_DATA_BUF_OFF;
+ } else {
+ /* data bounce buffer */
+ host->bounce_buf_size = mmc->max_req_size;
+ host->bounce_buf =
+ dma_alloc_coherent(host->dev, host->bounce_buf_size,
+ &host->bounce_dma_addr, GFP_KERNEL);
+ if (host->bounce_buf == NULL) {
+ dev_err(host->dev, "Unable to map allocate DMA bounce buffer.\n");
+ ret = -ENOMEM;
+ goto err_free_irq;
+ }
}
host->descs = dma_alloc_coherent(host->dev, SD_EMMC_DESC_BUF_LEN,
return 0;
err_bounce_buf:
- dma_free_coherent(host->dev, host->bounce_buf_size,
- host->bounce_buf, host->bounce_dma_addr);
+ if (!host->dram_access_quirk)
+ dma_free_coherent(host->dev, host->bounce_buf_size,
+ host->bounce_buf, host->bounce_dma_addr);
err_free_irq:
free_irq(host->irq, host);
err_init_clk:
dma_free_coherent(host->dev, SD_EMMC_DESC_BUF_LEN,
host->descs, host->descs_dma_addr);
- dma_free_coherent(host->dev, host->bounce_buf_size,
- host->bounce_buf, host->bounce_dma_addr);
+
+ if (!host->dram_access_quirk)
+ dma_free_coherent(host->dev, host->bounce_buf_size,
+ host->bounce_buf, host->bounce_dma_addr);
clk_disable_unprepare(host->mmc_clk);
clk_disable_unprepare(host->core_clk);
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
*
*
* Current driver maintained by Ben Dooks and Simtec Electronics
* Copyright (C) 2008 Simtec Electronics <ben-linux@fluff.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/module.h>
static void s3cmci_debugfs_attach(struct s3cmci_host *host)
{
struct device *dev = &host->pdev->dev;
+ struct dentry *root;
- host->debug_root = debugfs_create_dir(dev_name(dev), NULL);
- if (IS_ERR(host->debug_root)) {
- dev_err(dev, "failed to create debugfs root\n");
- return;
- }
-
- host->debug_state = debugfs_create_file("state", 0444,
- host->debug_root, host,
- &s3cmci_state_fops);
-
- if (IS_ERR(host->debug_state))
- dev_err(dev, "failed to create debug state file\n");
-
- host->debug_regs = debugfs_create_file("regs", 0444,
- host->debug_root, host,
- &s3cmci_regs_fops);
+ root = debugfs_create_dir(dev_name(dev), NULL);
+ host->debug_root = root;
- if (IS_ERR(host->debug_regs))
- dev_err(dev, "failed to create debug regs file\n");
+ debugfs_create_file("state", 0444, root, host, &s3cmci_state_fops);
+ debugfs_create_file("regs", 0444, root, host, &s3cmci_regs_fops);
}
static void s3cmci_debugfs_remove(struct s3cmci_host *host)
{
- debugfs_remove(host->debug_regs);
- debugfs_remove(host->debug_state);
- debugfs_remove(host->debug_root);
+ debugfs_remove_recursive(host->debug_root);
}
#else
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
*
* Copyright (C) 2004-2006 Thomas Kleffel, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
enum s3cmci_waitfor {
#ifdef CONFIG_DEBUG_FS
struct dentry *debug_root;
- struct dentry *debug_state;
- struct dentry *debug_regs;
#endif
#ifdef CONFIG_ARM_S3C24XX_CPUFREQ
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/include/linux/mmc/host.h
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* Host driver specific definitions.
*/
#ifndef LINUX_MMC_HOST_H
wake_up_process(host->sdio_irq_thread);
}
- void sdio_run_irqs(struct mmc_host *host);
void sdio_signal_irq(struct mmc_host *host);
#ifdef CONFIG_REGULATOR
projects / linux-2.6-block.git / commitdiff