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-rw-r--r--drivers/mtd/maps/pcmciamtd.c102
-rw-r--r--drivers/mtd/mtd_blkdevs.c14
-rw-r--r--drivers/mtd/mtdchar.c15
-rw-r--r--drivers/mtd/nand/bf5xx_nand.c9
-rw-r--r--drivers/mtd/nand/mxc_nand.c137
-rw-r--r--drivers/mtd/nand/omap2.c2
-rw-r--r--drivers/mtd/nand/pxa3xx_nand.c6
-rw-r--r--drivers/mtd/onenand/samsung.c16
8 files changed, 174 insertions, 127 deletions
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c
index e9ca5ba7d9d..57a1acfe22c 100644
--- a/drivers/mtd/maps/pcmciamtd.c
+++ b/drivers/mtd/maps/pcmciamtd.c
@@ -16,7 +16,6 @@
#include <asm/io.h>
#include <asm/system.h>
-#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
@@ -101,7 +100,7 @@ MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)")
static caddr_t remap_window(struct map_info *map, unsigned long to)
{
struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
- window_handle_t win = (window_handle_t)map->map_priv_2;
+ struct resource *win = (struct resource *) map->map_priv_2;
unsigned int offset;
int ret;
@@ -316,30 +315,19 @@ static void pcmciamtd_set_vpp(struct map_info *map, int on)
{
struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
struct pcmcia_device *link = dev->p_dev;
- modconf_t mod;
- int ret;
-
- mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
- mod.Vcc = 0;
- mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;
DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
- ret = pcmcia_modify_configuration(link, &mod);
+ pcmcia_fixup_vpp(link, on ? dev->vpp : 0);
}
-/* After a card is removed, pcmciamtd_release() will unregister the
- * device, and release the PCMCIA configuration. If the device is
- * still open, this will be postponed until it is closed.
- */
-
static void pcmciamtd_release(struct pcmcia_device *link)
{
struct pcmciamtd_dev *dev = link->priv;
DEBUG(3, "link = 0x%p", link);
- if (link->win) {
+ if (link->resource[2]->end) {
if(dev->win_base) {
iounmap(dev->win_base);
dev->win_base = NULL;
@@ -482,18 +470,12 @@ static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev
}
-/* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
- * is received, to configure the PCMCIA socket, and to make the
- * MTD device available to the system.
- */
-
static int pcmciamtd_config(struct pcmcia_device *link)
{
struct pcmciamtd_dev *dev = link->priv;
struct mtd_info *mtd = NULL;
- win_req_t req;
int ret;
- int i;
+ int i, j = 0;
static char *probes[] = { "jedec_probe", "cfi_probe" };
int new_name = 0;
@@ -520,28 +502,34 @@ static int pcmciamtd_config(struct pcmcia_device *link)
* smaller windows until we succeed
*/
- req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE;
- req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
- req.Base = 0;
- req.AccessSpeed = mem_speed;
- link->win = (window_handle_t)link;
- req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
+ link->resource[2]->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
+ link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
+ WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
+ link->resource[2]->start = 0;
+ link->resource[2]->end = (force_size) ? force_size << 20 :
+ MAX_PCMCIA_ADDR;
dev->win_size = 0;
do {
int ret;
- DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
- req.Size >> 10, req.AccessSpeed);
- ret = pcmcia_request_window(link, &req, &link->win);
+ DEBUG(2, "requesting window with size = %luKiB memspeed = %d",
+ (unsigned long) resource_size(link->resource[2]) >> 10,
+ mem_speed);
+ ret = pcmcia_request_window(link, link->resource[2], mem_speed);
DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
if(ret) {
- req.Size >>= 1;
+ j++;
+ link->resource[2]->start = 0;
+ link->resource[2]->end = (force_size) ?
+ force_size << 20 : MAX_PCMCIA_ADDR;
+ link->resource[2]->end >>= j;
} else {
- DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
- dev->win_size = req.Size;
+ DEBUG(2, "Got window of size %luKiB", (unsigned long)
+ resource_size(link->resource[2]) >> 10);
+ dev->win_size = resource_size(link->resource[2]);
break;
}
- } while(req.Size >= 0x1000);
+ } while (link->resource[2]->end >= 0x1000);
DEBUG(2, "dev->win_size = %d", dev->win_size);
@@ -553,33 +541,31 @@ static int pcmciamtd_config(struct pcmcia_device *link)
DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
/* Get write protect status */
- DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win);
- dev->win_base = ioremap(req.Base, req.Size);
+ dev->win_base = ioremap(link->resource[2]->start,
+ resource_size(link->resource[2]));
if(!dev->win_base) {
- dev_err(&dev->p_dev->dev, "ioremap(%lu, %u) failed\n",
- req.Base, req.Size);
+ dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
+ link->resource[2]);
pcmciamtd_release(link);
return -ENODEV;
}
- DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
- dev, req.Base, dev->win_base, req.Size);
+ DEBUG(1, "mapped window dev = %p @ %pR, base = %p",
+ dev, link->resource[2], dev->win_base);
dev->offset = 0;
dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
- dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
+ dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
- link->conf.Attributes = 0;
if(setvpp == 2) {
- link->conf.Vpp = dev->vpp;
+ link->vpp = dev->vpp;
} else {
- link->conf.Vpp = 0;
+ link->vpp = 0;
}
- link->conf.IntType = INT_MEMORY;
- link->conf.ConfigIndex = 0;
+ link->config_index = 0;
DEBUG(2, "Setting Configuration");
- ret = pcmcia_request_configuration(link, &link->conf);
+ ret = pcmcia_enable_device(link);
if (ret != 0) {
if (dev->win_base) {
iounmap(dev->win_base);
@@ -680,12 +666,6 @@ static int pcmciamtd_resume(struct pcmcia_device *dev)
}
-/* This deletes a driver "instance". The device is de-registered
- * with Card Services. If it has been released, all local data
- * structures are freed. Otherwise, the structures will be freed
- * when the device is released.
- */
-
static void pcmciamtd_detach(struct pcmcia_device *link)
{
struct pcmciamtd_dev *dev = link->priv;
@@ -703,11 +683,6 @@ static void pcmciamtd_detach(struct pcmcia_device *link)
}
-/* pcmciamtd_attach() creates an "instance" of the driver, allocating
- * local data structures for one device. The device is registered
- * with Card Services.
- */
-
static int pcmciamtd_probe(struct pcmcia_device *link)
{
struct pcmciamtd_dev *dev;
@@ -720,9 +695,6 @@ static int pcmciamtd_probe(struct pcmcia_device *link)
dev->p_dev = link;
link->priv = dev;
- link->conf.Attributes = 0;
- link->conf.IntType = INT_MEMORY;
-
return pcmciamtd_config(link);
}
@@ -757,9 +729,7 @@ static struct pcmcia_device_id pcmciamtd_ids[] = {
MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
static struct pcmcia_driver pcmciamtd_driver = {
- .drv = {
- .name = "pcmciamtd"
- },
+ .name = "pcmciamtd",
.probe = pcmciamtd_probe,
.remove = pcmciamtd_detach,
.owner = THIS_MODULE,
@@ -771,8 +741,6 @@ static struct pcmcia_driver pcmciamtd_driver = {
static int __init init_pcmciamtd(void)
{
- info(DRIVER_DESC);
-
if(bankwidth && bankwidth != 1 && bankwidth != 2) {
info("bad bankwidth (%d), using default", bankwidth);
bankwidth = 2;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 62e68707b07..50ab431b24e 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -29,7 +29,6 @@
#include <linux/blkdev.h>
#include <linux/blkpg.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/hdreg.h>
#include <linux/init.h>
#include <linux/mutex.h>
@@ -38,6 +37,7 @@
#include "mtdcore.h"
+static DEFINE_MUTEX(mtd_blkdevs_mutex);
static LIST_HEAD(blktrans_majors);
static DEFINE_MUTEX(blktrans_ref_mutex);
@@ -181,7 +181,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
if (!dev)
return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
- lock_kernel();
+ mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (!dev->mtd) {
@@ -198,7 +198,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
- unlock_kernel();
+ mutex_unlock(&mtd_blkdevs_mutex);
return ret;
}
@@ -210,7 +210,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
if (!dev)
return ret;
- lock_kernel();
+ mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
/* Release one reference, we sure its not the last one here*/
@@ -223,7 +223,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
- unlock_kernel();
+ mutex_unlock(&mtd_blkdevs_mutex);
return ret;
}
@@ -256,7 +256,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
if (!dev)
return ret;
- lock_kernel();
+ mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (!dev->mtd)
@@ -271,7 +271,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
}
unlock:
mutex_unlock(&dev->lock);
- unlock_kernel();
+ mutex_unlock(&mtd_blkdevs_mutex);
blktrans_dev_put(dev);
return ret;
}
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index a825002123c..5ef45487b65 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -26,7 +26,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/sched.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <linux/backing-dev.h>
#include <linux/compat.h>
#include <linux/mount.h>
@@ -37,6 +37,7 @@
#include <asm/uaccess.h>
#define MTD_INODE_FS_MAGIC 0x11307854
+static DEFINE_MUTEX(mtd_mutex);
static struct vfsmount *mtd_inode_mnt __read_mostly;
/*
@@ -90,7 +91,7 @@ static int mtd_open(struct inode *inode, struct file *file)
if ((file->f_mode & FMODE_WRITE) && (minor & 1))
return -EACCES;
- lock_kernel();
+ mutex_lock(&mtd_mutex);
mtd = get_mtd_device(NULL, devnum);
if (IS_ERR(mtd)) {
@@ -138,7 +139,7 @@ static int mtd_open(struct inode *inode, struct file *file)
file->private_data = mfi;
out:
- unlock_kernel();
+ mutex_unlock(&mtd_mutex);
return ret;
} /* mtd_open */
@@ -866,9 +867,9 @@ static long mtd_unlocked_ioctl(struct file *file, u_int cmd, u_long arg)
{
int ret;
- lock_kernel();
+ mutex_lock(&mtd_mutex);
ret = mtd_ioctl(file, cmd, arg);
- unlock_kernel();
+ mutex_unlock(&mtd_mutex);
return ret;
}
@@ -892,7 +893,7 @@ static long mtd_compat_ioctl(struct file *file, unsigned int cmd,
void __user *argp = compat_ptr(arg);
int ret = 0;
- lock_kernel();
+ mutex_lock(&mtd_mutex);
switch (cmd) {
case MEMWRITEOOB32:
@@ -927,7 +928,7 @@ static long mtd_compat_ioctl(struct file *file, unsigned int cmd,
ret = mtd_ioctl(file, cmd, (unsigned long)argp);
}
- unlock_kernel();
+ mutex_unlock(&mtd_mutex);
return ret;
}
diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index a382e3dd0a5..6fbeefa3a76 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/drivers/mtd/nand/bf5xx_nand.c
@@ -682,7 +682,6 @@ static int __devinit bf5xx_nand_add_partition(struct bf5xx_nand_info *info)
static int __devexit bf5xx_nand_remove(struct platform_device *pdev)
{
struct bf5xx_nand_info *info = to_nand_info(pdev);
- struct mtd_info *mtd = NULL;
platform_set_drvdata(pdev, NULL);
@@ -690,11 +689,7 @@ static int __devexit bf5xx_nand_remove(struct platform_device *pdev)
* and their partitions, then go through freeing the
* resources used
*/
- mtd = &info->mtd;
- if (mtd) {
- nand_release(mtd);
- kfree(mtd);
- }
+ nand_release(&info->mtd);
peripheral_free_list(bfin_nfc_pin_req);
bf5xx_nand_dma_remove(info);
@@ -710,7 +705,7 @@ static int bf5xx_nand_scan(struct mtd_info *mtd)
struct nand_chip *chip = mtd->priv;
int ret;
- ret = nand_scan_ident(mtd, 1);
+ ret = nand_scan_ident(mtd, 1, NULL);
if (ret)
return ret;
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index fcf8ceb277d..214b03afdd4 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -30,6 +30,8 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/completion.h>
#include <asm/mach/flash.h>
#include <mach/mxc_nand.h>
@@ -67,7 +69,9 @@
#define NFC_V1_V2_CONFIG1_BIG (1 << 5)
#define NFC_V1_V2_CONFIG1_RST (1 << 6)
#define NFC_V1_V2_CONFIG1_CE (1 << 7)
-#define NFC_V1_V2_CONFIG1_ONE_CYCLE (1 << 8)
+#define NFC_V2_CONFIG1_ONE_CYCLE (1 << 8)
+#define NFC_V2_CONFIG1_PPB(x) (((x) & 0x3) << 9)
+#define NFC_V2_CONFIG1_FP_INT (1 << 11)
#define NFC_V1_V2_CONFIG2_INT (1 << 15)
@@ -149,7 +153,7 @@ struct mxc_nand_host {
int irq;
int eccsize;
- wait_queue_head_t irq_waitq;
+ struct completion op_completion;
uint8_t *data_buf;
unsigned int buf_start;
@@ -162,6 +166,7 @@ struct mxc_nand_host {
void (*send_read_id)(struct mxc_nand_host *);
uint16_t (*get_dev_status)(struct mxc_nand_host *);
int (*check_int)(struct mxc_nand_host *);
+ void (*irq_control)(struct mxc_nand_host *, int);
};
/* OOB placement block for use with hardware ecc generation */
@@ -214,9 +219,12 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id)
{
struct mxc_nand_host *host = dev_id;
- disable_irq_nosync(irq);
+ if (!host->check_int(host))
+ return IRQ_NONE;
- wake_up(&host->irq_waitq);
+ host->irq_control(host, 0);
+
+ complete(&host->op_completion);
return IRQ_HANDLED;
}
@@ -243,11 +251,54 @@ static int check_int_v1_v2(struct mxc_nand_host *host)
if (!(tmp & NFC_V1_V2_CONFIG2_INT))
return 0;
- writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2);
+ if (!cpu_is_mx21())
+ writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2);
return 1;
}
+/*
+ * It has been observed that the i.MX21 cannot read the CONFIG2:INT bit
+ * if interrupts are masked (CONFIG1:INT_MSK is set). To handle this, the
+ * driver can enable/disable the irq line rather than simply masking the
+ * interrupts.
+ */
+static void irq_control_mx21(struct mxc_nand_host *host, int activate)
+{
+ if (activate)
+ enable_irq(host->irq);
+ else
+ disable_irq_nosync(host->irq);
+}
+
+static void irq_control_v1_v2(struct mxc_nand_host *host, int activate)
+{
+ uint16_t tmp;
+
+ tmp = readw(NFC_V1_V2_CONFIG1);
+
+ if (activate)
+ tmp &= ~NFC_V1_V2_CONFIG1_INT_MSK;
+ else
+ tmp |= NFC_V1_V2_CONFIG1_INT_MSK;
+
+ writew(tmp, NFC_V1_V2_CONFIG1);
+}
+
+static void irq_control_v3(struct mxc_nand_host *host, int activate)
+{
+ uint32_t tmp;
+
+ tmp = readl(NFC_V3_CONFIG2);
+
+ if (activate)
+ tmp &= ~NFC_V3_CONFIG2_INT_MSK;
+ else
+ tmp |= NFC_V3_CONFIG2_INT_MSK;
+
+ writel(tmp, NFC_V3_CONFIG2);
+}
+
/* This function polls the NANDFC to wait for the basic operation to
* complete by checking the INT bit of config2 register.
*/
@@ -257,10 +308,9 @@ static void wait_op_done(struct mxc_nand_host *host, int useirq)
if (useirq) {
if (!host->check_int(host)) {
-
- enable_irq(host->irq);
-
- wait_event(host->irq_waitq, host->check_int(host));
+ INIT_COMPLETION(host->op_completion);
+ host->irq_control(host, 1);
+ wait_for_completion(&host->op_completion);
}
} else {
while (max_retries-- > 0) {
@@ -402,16 +452,16 @@ static void send_read_id_v1_v2(struct mxc_nand_host *host)
/* Wait for operation to complete */
wait_op_done(host, true);
+ memcpy(host->data_buf, host->main_area0, 16);
+
if (this->options & NAND_BUSWIDTH_16) {
- void __iomem *main_buf = host->main_area0;
/* compress the ID info */
- writeb(readb(main_buf + 2), main_buf + 1);
- writeb(readb(main_buf + 4), main_buf + 2);
- writeb(readb(main_buf + 6), main_buf + 3);
- writeb(readb(main_buf + 8), main_buf + 4);
- writeb(readb(main_buf + 10), main_buf + 5);
+ host->data_buf[1] = host->data_buf[2];
+ host->data_buf[2] = host->data_buf[4];
+ host->data_buf[3] = host->data_buf[6];
+ host->data_buf[4] = host->data_buf[8];
+ host->data_buf[5] = host->data_buf[10];
}
- memcpy(host->data_buf, host->main_area0, 16);
}
static uint16_t get_dev_status_v3(struct mxc_nand_host *host)
@@ -729,27 +779,30 @@ static void preset_v1_v2(struct mtd_info *mtd)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
- uint16_t tmp;
+ uint16_t config1 = 0;
- /* enable interrupt, disable spare enable */
- tmp = readw(NFC_V1_V2_CONFIG1);
- tmp &= ~NFC_V1_V2_CONFIG1_INT_MSK;
- tmp &= ~NFC_V1_V2_CONFIG1_SP_EN;
- if (nand_chip->ecc.mode == NAND_ECC_HW) {
- tmp |= NFC_V1_V2_CONFIG1_ECC_EN;
- } else {
- tmp &= ~NFC_V1_V2_CONFIG1_ECC_EN;
- }
+ if (nand_chip->ecc.mode == NAND_ECC_HW)
+ config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
+
+ if (nfc_is_v21())
+ config1 |= NFC_V2_CONFIG1_FP_INT;
+
+ if (!cpu_is_mx21())
+ config1 |= NFC_V1_V2_CONFIG1_INT_MSK;
if (nfc_is_v21() && mtd->writesize) {
+ uint16_t pages_per_block = mtd->erasesize / mtd->writesize;
+
host->eccsize = get_eccsize(mtd);
if (host->eccsize == 4)
- tmp |= NFC_V2_CONFIG1_ECC_MODE_4;
+ config1 |= NFC_V2_CONFIG1_ECC_MODE_4;
+
+ config1 |= NFC_V2_CONFIG1_PPB(ffs(pages_per_block) - 6);
} else {
host->eccsize = 1;
}
- writew(tmp, NFC_V1_V2_CONFIG1);
+ writew(config1, NFC_V1_V2_CONFIG1);
/* preset operation */
/* Unlock the internal RAM Buffer */
@@ -794,6 +847,7 @@ static void preset_v3(struct mtd_info *mtd)
NFC_V3_CONFIG2_2CMD_PHASES |
NFC_V3_CONFIG2_SPAS(mtd->oobsize >> 1) |
NFC_V3_CONFIG2_ST_CMD(0x70) |
+ NFC_V3_CONFIG2_INT_MSK |
NFC_V3_CONFIG2_NUM_ADDR_PHASE0;
if (chip->ecc.mode == NAND_ECC_HW)
@@ -1019,6 +1073,10 @@ static int __init mxcnd_probe(struct platform_device *pdev)
host->send_read_id = send_read_id_v1_v2;
host->get_dev_status = get_dev_status_v1_v2;
host->check_int = check_int_v1_v2;
+ if (cpu_is_mx21())
+ host->irq_control = irq_control_mx21;
+ else
+ host->irq_control = irq_control_v1_v2;
}
if (nfc_is_v21()) {
@@ -1057,6 +1115,7 @@ static int __init mxcnd_probe(struct platform_device *pdev)
host->send_read_id = send_read_id_v3;
host->check_int = check_int_v3;
host->get_dev_status = get_dev_status_v3;
+ host->irq_control = irq_control_v3;
oob_smallpage = &nandv2_hw_eccoob_smallpage;
oob_largepage = &nandv2_hw_eccoob_largepage;
} else
@@ -1088,14 +1147,34 @@ static int __init mxcnd_probe(struct platform_device *pdev)
this->options |= NAND_USE_FLASH_BBT;
}
- init_waitqueue_head(&host->irq_waitq);
+ init_completion(&host->op_completion);
host->irq = platform_get_irq(pdev, 0);
+ /*
+ * mask the interrupt. For i.MX21 explicitely call
+ * irq_control_v1_v2 to use the mask bit. We can't call
+ * disable_irq_nosync() for an interrupt we do not own yet.
+ */
+ if (cpu_is_mx21())
+ irq_control_v1_v2(host, 0);
+ else
+ host->irq_control(host, 0);
+
err = request_irq(host->irq, mxc_nfc_irq, IRQF_DISABLED, DRIVER_NAME, host);
if (err)
goto eirq;
+ host->irq_control(host, 0);
+
+ /*
+ * Now that the interrupt is disabled make sure the interrupt
+ * mask bit is cleared on i.MX21. Otherwise we can't read
+ * the interrupt status bit on this machine.
+ */
+ if (cpu_is_mx21())
+ irq_control_v1_v2(host, 1);
+
/* first scan to find the device and get the page size */
if (nand_scan_ident(mtd, 1, NULL)) {
err = -ENXIO;
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 133d51528f8..513e0a76a4a 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -413,7 +413,7 @@ static inline int omap_nand_dma_transfer(struct mtd_info *mtd, void *addr,
prefetch_status = gpmc_read_status(GPMC_PREFETCH_COUNT);
} while (prefetch_status);
/* disable and stop the PFPW engine */
- gpmc_prefetch_reset();
+ gpmc_prefetch_reset(info->gpmc_cs);
dma_unmap_single(&info->pdev->dev, dma_addr, len, dir);
return 0;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 4d89f378020..4d01cda6884 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1320,6 +1320,7 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
goto fail_free_irq;
}
+#ifdef CONFIG_MTD_PARTITIONS
if (mtd_has_cmdlinepart()) {
static const char *probes[] = { "cmdlinepart", NULL };
struct mtd_partition *parts;
@@ -1332,6 +1333,9 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
}
return add_mtd_partitions(mtd, pdata->parts, pdata->nr_parts);
+#else
+ return 0;
+#endif
fail_free_irq:
free_irq(irq, info);
@@ -1364,7 +1368,9 @@ static int pxa3xx_nand_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
del_mtd_device(mtd);
+#ifdef CONFIG_MTD_PARTITIONS
del_mtd_partitions(mtd);
+#endif
irq = platform_get_irq(pdev, 0);
if (irq >= 0)
free_irq(irq, info);
diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c
index cb443af3d45..a460f1b748c 100644
--- a/drivers/mtd/onenand/samsung.c
+++ b/drivers/mtd/onenand/samsung.c
@@ -554,14 +554,13 @@ static int s5pc110_dma_ops(void *dst, void *src, size_t count, int direction)
do {
status = readl(base + S5PC110_DMA_TRANS_STATUS);
+ if (status & S5PC110_DMA_TRANS_STATUS_TE) {
+ writel(S5PC110_DMA_TRANS_CMD_TEC,
+ base + S5PC110_DMA_TRANS_CMD);
+ return -EIO;
+ }
} while (!(status & S5PC110_DMA_TRANS_STATUS_TD));
- if (status & S5PC110_DMA_TRANS_STATUS_TE) {
- writel(S5PC110_DMA_TRANS_CMD_TEC, base + S5PC110_DMA_TRANS_CMD);
- writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD);
- return -EIO;
- }
-
writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD);
return 0;
@@ -571,13 +570,12 @@ static int s5pc110_read_bufferram(struct mtd_info *mtd, int area,
unsigned char *buffer, int offset, size_t count)
{
struct onenand_chip *this = mtd->priv;
- void __iomem *bufferram;
void __iomem *p;
void *buf = (void *) buffer;
dma_addr_t dma_src, dma_dst;
int err;
- p = bufferram = this->base + area;
+ p = this->base + area;
if (ONENAND_CURRENT_BUFFERRAM(this)) {
if (area == ONENAND_DATARAM)
p += this->writesize;
@@ -621,7 +619,7 @@ static int s5pc110_read_bufferram(struct mtd_info *mtd, int area,
normal:
if (count != mtd->writesize) {
/* Copy the bufferram to memory to prevent unaligned access */
- memcpy(this->page_buf, bufferram, mtd->writesize);
+ memcpy(this->page_buf, p, mtd->writesize);
p = this->page_buf + offset;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-01-03 20:19:49 +0000