From 3abf5ce6564e24a388b86caf1a00f91f4262b312 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 7 Mar 2016 17:56:53 +0000 Subject: ramips: convert the remaining subtargets to 4.4 Signed-off-by: Felix Fietkau SVN-Revision: 48954 --- .../0054-mtd-add-chunked-read-io-to-m25p80.patch | 123 --------------------- 1 file changed, 123 deletions(-) delete mode 100644 target/linux/ramips/patches-4.3/0054-mtd-add-chunked-read-io-to-m25p80.patch (limited to 'target/linux/ramips/patches-4.3/0054-mtd-add-chunked-read-io-to-m25p80.patch') diff --git a/target/linux/ramips/patches-4.3/0054-mtd-add-chunked-read-io-to-m25p80.patch b/target/linux/ramips/patches-4.3/0054-mtd-add-chunked-read-io-to-m25p80.patch deleted file mode 100644 index c7a33d2c38..0000000000 --- a/target/linux/ramips/patches-4.3/0054-mtd-add-chunked-read-io-to-m25p80.patch +++ /dev/null @@ -1,123 +0,0 @@ ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -1008,6 +1008,66 @@ write_err: - return ret; - } - -+static int spi_nor_chunked_write(struct mtd_info *mtd, loff_t _to, size_t _len, -+ size_t *_retlen, const u_char *_buf) -+{ -+ struct spi_nor *nor = mtd_to_spi_nor(mtd); -+ int chunk_size; -+ int retlen = 0; -+ int ret; -+ -+ chunk_size = nor->chunk_size; -+ if (!chunk_size) -+ chunk_size = _len; -+ -+ if (nor->addr_width > 3) -+ chunk_size -= nor->addr_width - 3; -+ -+ while (retlen < _len) { -+ size_t len = min_t(int, chunk_size, _len - retlen); -+ const u_char *buf = _buf + retlen; -+ loff_t to = _to + retlen; -+ -+ if (nor->flags & SNOR_F_SST) -+ ret = sst_write(mtd, to, len, &retlen, buf); -+ else -+ ret = spi_nor_write(mtd, to, len, &retlen, buf); -+ if (ret) -+ return ret; -+ } -+ -+ *_retlen += retlen; -+ return 0; -+} -+ -+static int spi_nor_chunked_read(struct mtd_info *mtd, loff_t _from, size_t _len, -+ size_t *_retlen, u_char *_buf) -+{ -+ struct spi_nor *nor = mtd_to_spi_nor(mtd); -+ int chunk_size; -+ int ret; -+ -+ chunk_size = nor->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; -+ -+ ret = spi_nor_read(mtd, from, len, &retlen, buf); -+ if (ret) -+ return ret; -+ -+ *_retlen += retlen; -+ } -+ -+ return 0; -+} -+ - static int macronix_quad_enable(struct spi_nor *nor) - { - int ret, val; -@@ -1231,10 +1291,12 @@ int spi_nor_scan(struct spi_nor *nor, co - } - - /* sst nor chips use AAI word program */ -- if (info->flags & SST_WRITE) -+ if (info->flags & SST_WRITE) { - mtd->_write = sst_write; -- else -+ nor->flags |= SNOR_F_SST; -+ } else { - mtd->_write = spi_nor_write; -+ } - - if (info->flags & USE_FSR) - nor->flags |= SNOR_F_USE_FSR; -@@ -1262,11 +1324,20 @@ int spi_nor_scan(struct spi_nor *nor, co - mtd->writebufsize = nor->page_size; - - if (np) { -+ u32 val; -+ - /* If we were instantiated by DT, use it */ - if (of_property_read_bool(np, "m25p,fast-read")) - nor->flash_read = SPI_NOR_FAST; - else - nor->flash_read = SPI_NOR_NORMAL; -+ -+ if (!of_property_read_u32(np, "m25p,chunked-io", &val)) { -+ dev_info(dev, "using chunked io (size=%d)\n", val); -+ mtd->_read = spi_nor_chunked_read; -+ mtd->_write = spi_nor_chunked_write; -+ nor->chunk_size = val; -+ } - } else { - /* If we weren't instantiated by DT, default to fast-read */ - nor->flash_read = SPI_NOR_FAST; ---- a/include/linux/mtd/spi-nor.h -+++ b/include/linux/mtd/spi-nor.h -@@ -116,6 +116,7 @@ enum spi_nor_ops { - - enum spi_nor_option_flags { - SNOR_F_USE_FSR = BIT(0), -+ SNOR_F_SST = BIT(1), - }; - - /** -@@ -156,6 +157,7 @@ struct spi_nor { - struct device *dev; - struct device_node *flash_node; - u32 page_size; -+ u16 chunk_size; - u8 addr_width; - u8 erase_opcode; - u8 read_opcode; -- cgit v1.2.3