bcm53xx: drop unused source file of bcm53xxspiflash

We don't use this driver since commit 741715331aee ("bcm53xx: switch to
m25p80 and drop bcm53xxspiflash").

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

diff --git a/target/linux/bcm53xx/files/drivers/mtd/spi-nor/bcm53xxspiflash.c b/target/linux/bcm53xx/files/drivers/mtd/spi-nor/bcm53xxspiflash.c
deleted file mode 100644 (file)
index 438fd49..0000000
--- a/target/linux/bcm53xx/files/drivers/mtd/spi-nor/bcm53xxspiflash.c
+++ /dev/null
@@ -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);