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| author | John Crispin <blogic@openwrt.org> | 2015-02-19 14:04:47 +0000 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2015-02-19 14:04:47 +0000 |
| commit | 0b743d302b4a559c08803878eb3b6fb0f43488d3 (patch) | |
| tree | 94adc48de3b71c691d29eee3e33220c41a98c080 /target/linux/ramips/patches-3.18 | |
| parent | ca5bbee2474a154b522cc8a721a21f63cf6c9d77 (diff) | |
| download | master-187ad058-0b743d302b4a559c08803878eb3b6fb0f43488d3.tar.gz master-187ad058-0b743d302b4a559c08803878eb3b6fb0f43488d3.tar.bz2 master-187ad058-0b743d302b4a559c08803878eb3b6fb0f43488d3.zip | |
ralink: bump to v3.18
Signed-off-by: John Crispin <blogic@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44495 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/patches-3.18')
| -rw-r--r-- | target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch b/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch new file mode 100644 index 0000000000..b014c3e847 --- /dev/null +++ b/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch @@ -0,0 +1,100 @@ +--- a/drivers/mtd/devices/m25p80.c ++++ b/drivers/mtd/devices/m25p80.c +@@ -19,6 +19,7 @@ + #include <linux/errno.h> + #include <linux/module.h> + #include <linux/device.h> ++#include <linux/of.h> + + #include <linux/mtd/mtd.h> + #include <linux/mtd/partitions.h> +@@ -32,6 +33,7 @@ + struct spi_device *spi; + struct spi_nor spi_nor; + struct mtd_info mtd; ++ u16 chunk_size; + u8 command[MAX_CMD_SIZE]; + }; + +@@ -157,6 +159,58 @@ + return 0; + } + ++static void m25p80_chunked_write(struct spi_nor *nor, loff_t _from, size_t _len, ++ size_t *_retlen, const u_char *_buf) ++{ ++ struct m25p *flash = nor->priv; ++ int chunk_size; ++ int retlen = 0; ++ ++ chunk_size = flash->chunk_size; ++ if (!chunk_size) ++ chunk_size = _len; ++ ++ while (retlen < _len) { ++ size_t len = min_t(int, chunk_size, _len - retlen); ++ const u_char *buf = _buf + retlen; ++ loff_t from = _from + retlen; ++ ++ nor->wait_till_ready(nor); ++ nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0); ++ ++ m25p80_write(nor, from, len, &retlen, buf); ++ } ++ *_retlen += retlen; ++} ++ ++static int m25p80_chunked_read(struct spi_nor *nor, loff_t _from, size_t _len, ++ size_t *_retlen, u_char *_buf) ++{ ++ struct m25p *flash = nor->priv; ++ int chunk_size; ++ ++ chunk_size = flash->chunk_size; ++ if (!chunk_size) ++ chunk_size = _len; ++ ++ *_retlen = 0; ++ ++ while (*_retlen < _len) { ++ size_t len = min_t(int, chunk_size, _len - *_retlen); ++ u_char *buf = _buf + *_retlen; ++ loff_t from = _from + *_retlen; ++ int retlen = 0; ++ int ret = m25p80_read(nor, from, len, &retlen, buf); ++ ++ if (ret) ++ return ret; ++ ++ *_retlen += retlen; ++ } ++ ++ return 0; ++} ++ + static int m25p80_erase(struct spi_nor *nor, loff_t offset) + { + struct m25p *flash = nor->priv; +@@ -197,6 +251,7 @@ + struct spi_nor *nor; + enum read_mode mode = SPI_NOR_NORMAL; + char *flash_name = NULL; ++ u32 val; + int ret; + + data = dev_get_platdata(&spi->dev); +@@ -244,6 +299,14 @@ + if (ret) + return ret; + ++ if (spi->dev.of_node && ++ !of_property_read_u32(spi->dev.of_node, "m25p,chunked-io", &val)) { ++ dev_warn(&spi->dev, "using chunked io\n"); ++ nor->read = m25p80_chunked_read; ++ nor->write = m25p80_chunked_write; ++ flash->chunk_size = val; ++ } ++ + ppdata.of_node = spi->dev.of_node; + + return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, |