[source] bcm53xx: drop unused source file of bcm53xxspiflash

[LEDE Commits]

rmilecki pushed a commit to source.git, branch master:
https://git.lede-project.org/c5ca3043d105462ed75d7cc46ee2e7a376623fa9

commit c5ca3043d105462ed75d7cc46ee2e7a376623fa9
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Thu Dec 29 18:03:30 2016 +0100

    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 at milecki.pl>
---
 .../files/drivers/mtd/spi-nor/bcm53xxspiflash.c    | 228 ---------------------
 1 file changed, 228 deletions(-)

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
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);