bcm53xx: drop unused source file of bcm53xxspiflash
We don't use this driver since commit 741715331a ("bcm53xx: switch to
m25p80 and drop bcm53xxspiflash").
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
parent
ef4fc00c91
commit
c5ca3043d1
1 changed files with 0 additions and 228 deletions
|
|
@ -1,228 +0,0 @@
|
|||
#include <linux/module.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/mtd/spi-nor.h>
|
||||
#include <linux/mtd/mtd.h>
|
||||
#include <linux/mtd/cfi.h>
|
||||
#include <linux/mtd/partitions.h>
|
||||
|
||||
static const char * const probes[] = { "ofpart", "bcm47xxpart", NULL };
|
||||
|
||||
struct bcm53xxsf {
|
||||
struct spi_device *spi;
|
||||
struct spi_nor nor;
|
||||
};
|
||||
|
||||
/**************************************************
|
||||
* spi-nor API
|
||||
**************************************************/
|
||||
|
||||
static int bcm53xxspiflash_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf,
|
||||
int len)
|
||||
{
|
||||
struct bcm53xxsf *b53sf = nor->priv;
|
||||
|
||||
return spi_write_then_read(b53sf->spi, &opcode, 1, buf, len);
|
||||
}
|
||||
|
||||
static int bcm53xxspiflash_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf,
|
||||
int len)
|
||||
{
|
||||
struct bcm53xxsf *b53sf = nor->priv;
|
||||
u8 *cmd = kzalloc(len + 1, GFP_KERNEL);
|
||||
int err;
|
||||
|
||||
if (!cmd)
|
||||
return -ENOMEM;
|
||||
|
||||
cmd[0] = opcode;
|
||||
memcpy(&cmd[1], buf, len);
|
||||
err = spi_write(b53sf->spi, cmd, len + 1);
|
||||
|
||||
kfree(cmd);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int bcm53xxspiflash_read(struct spi_nor *nor, loff_t from, size_t len,
|
||||
size_t *retlen, u_char *buf)
|
||||
{
|
||||
struct bcm53xxsf *b53sf = nor->priv;
|
||||
struct spi_message m;
|
||||
struct spi_transfer t[2] = { { 0 }, { 0 } };
|
||||
unsigned char cmd[5];
|
||||
int cmd_len = 0;
|
||||
int err;
|
||||
|
||||
spi_message_init(&m);
|
||||
|
||||
cmd[cmd_len++] = SPINOR_OP_READ;
|
||||
if (nor->mtd.size > 0x1000000)
|
||||
cmd[cmd_len++] = (from & 0xFF000000) >> 24;
|
||||
cmd[cmd_len++] = (from & 0x00FF0000) >> 16;
|
||||
cmd[cmd_len++] = (from & 0x0000FF00) >> 8;
|
||||
cmd[cmd_len++] = (from & 0x000000FF) >> 0;
|
||||
|
||||
t[0].tx_buf = cmd;
|
||||
t[0].len = cmd_len;
|
||||
spi_message_add_tail(&t[0], &m);
|
||||
|
||||
t[1].rx_buf = buf;
|
||||
t[1].len = len;
|
||||
spi_message_add_tail(&t[1], &m);
|
||||
|
||||
err = spi_sync(b53sf->spi, &m);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (retlen && m.actual_length > cmd_len)
|
||||
*retlen = m.actual_length - cmd_len;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void bcm53xxspiflash_write(struct spi_nor *nor, loff_t to, size_t len,
|
||||
size_t *retlen, const u_char *buf)
|
||||
{
|
||||
struct bcm53xxsf *b53sf = nor->priv;
|
||||
struct spi_message m;
|
||||
struct spi_transfer t = { 0 };
|
||||
u8 *cmd = kzalloc(len + 5, GFP_KERNEL);
|
||||
int cmd_len = 0;
|
||||
int err;
|
||||
|
||||
if (!cmd)
|
||||
return;
|
||||
|
||||
spi_message_init(&m);
|
||||
|
||||
cmd[cmd_len++] = nor->program_opcode;
|
||||
if (nor->mtd.size > 0x1000000)
|
||||
cmd[cmd_len++] = (to & 0xFF000000) >> 24;
|
||||
cmd[cmd_len++] = (to & 0x00FF0000) >> 16;
|
||||
cmd[cmd_len++] = (to & 0x0000FF00) >> 8;
|
||||
cmd[cmd_len++] = (to & 0x000000FF) >> 0;
|
||||
memcpy(&cmd[cmd_len], buf, len);
|
||||
|
||||
t.tx_buf = cmd;
|
||||
t.len = cmd_len + len;
|
||||
spi_message_add_tail(&t, &m);
|
||||
|
||||
err = spi_sync(b53sf->spi, &m);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
if (retlen && m.actual_length > cmd_len)
|
||||
*retlen += m.actual_length - cmd_len;
|
||||
|
||||
out:
|
||||
kfree(cmd);
|
||||
}
|
||||
|
||||
static int bcm53xxspiflash_erase(struct spi_nor *nor, loff_t offs)
|
||||
{
|
||||
struct bcm53xxsf *b53sf = nor->priv;
|
||||
unsigned char cmd[5];
|
||||
int i;
|
||||
|
||||
i = 0;
|
||||
cmd[i++] = nor->erase_opcode;
|
||||
if (nor->mtd.size > 0x1000000)
|
||||
cmd[i++] = (offs & 0xFF000000) >> 24;
|
||||
cmd[i++] = ((offs & 0x00FF0000) >> 16);
|
||||
cmd[i++] = ((offs & 0x0000FF00) >> 8);
|
||||
cmd[i++] = ((offs & 0x000000FF) >> 0);
|
||||
|
||||
return spi_write(b53sf->spi, cmd, i);
|
||||
}
|
||||
|
||||
static const char *bcm53xxspiflash_chip_name(struct spi_nor *nor)
|
||||
{
|
||||
struct bcm53xxsf *b53sf = nor->priv;
|
||||
struct device *dev = &b53sf->spi->dev;
|
||||
unsigned char cmd[4];
|
||||
unsigned char resp[2];
|
||||
int err;
|
||||
|
||||
/* SST and Winbond/NexFlash specific command */
|
||||
cmd[0] = 0x90; /* Read Manufacturer / Device ID */
|
||||
cmd[1] = 0;
|
||||
cmd[2] = 0;
|
||||
cmd[3] = 0;
|
||||
err = spi_write_then_read(b53sf->spi, cmd, 4, resp, 2);
|
||||
if (err < 0) {
|
||||
dev_err(dev, "error reading SPI flash id\n");
|
||||
return ERR_PTR(-EBUSY);
|
||||
}
|
||||
switch (resp[0]) {
|
||||
case 0xef: /* Winbond/NexFlash */
|
||||
switch (resp[1]) {
|
||||
case 0x17:
|
||||
return "w25q128";
|
||||
}
|
||||
dev_err(dev, "Unknown Winbond/NexFlash flash: %02X %02X\n",
|
||||
resp[0], resp[1]);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* TODO: Try more ID commands */
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**************************************************
|
||||
* SPI driver
|
||||
**************************************************/
|
||||
|
||||
static int bcm53xxspiflash_probe(struct spi_device *spi)
|
||||
{
|
||||
struct mtd_part_parser_data parser_data = {};
|
||||
struct bcm53xxsf *b53sf;
|
||||
struct spi_nor *nor;
|
||||
int err;
|
||||
|
||||
b53sf = devm_kzalloc(&spi->dev, sizeof(*b53sf), GFP_KERNEL);
|
||||
if (!b53sf)
|
||||
return -ENOMEM;
|
||||
spi_set_drvdata(spi, b53sf);
|
||||
|
||||
nor = &b53sf->nor;
|
||||
b53sf->spi = spi;
|
||||
|
||||
nor->dev = &spi->dev;
|
||||
nor->read_reg = bcm53xxspiflash_read_reg;
|
||||
nor->write_reg = bcm53xxspiflash_write_reg;
|
||||
nor->read = bcm53xxspiflash_read;
|
||||
nor->write = bcm53xxspiflash_write;
|
||||
nor->erase = bcm53xxspiflash_erase;
|
||||
nor->priv = b53sf;
|
||||
|
||||
err = spi_nor_scan(&b53sf->nor, bcm53xxspiflash_chip_name(nor),
|
||||
SPI_NOR_NORMAL);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
parser_data.of_node = spi->master->dev.parent->of_node;
|
||||
err = mtd_device_parse_register(&nor->mtd, probes, &parser_data,
|
||||
NULL, 0);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm53xxspiflash_remove(struct spi_device *spi)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct spi_driver bcm53xxspiflash_driver = {
|
||||
.driver = {
|
||||
.name = "bcm53xxspiflash",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = bcm53xxspiflash_probe,
|
||||
.remove = bcm53xxspiflash_remove,
|
||||
};
|
||||
|
||||
module_spi_driver(bcm53xxspiflash_driver);
|
||||
Loading…
Reference in a new issue