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Unverified Commit f1570cac authored by Matthias Schiffer's avatar Matthias Schiffer
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ramips: add missing patch to spi-nor backport to fix mt7621 support

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patches/openwrt/0029-kernel-backport-spi-nor-driver-from-4.4.9.patch
+ 122
− 51
View file @ f1570cac
...@@ -1915,11 +1915,10 @@ index 2beb39c..21f823d 100644 ...@@ -1915,11 +1915,10 @@ index 2beb39c..21f823d 100644
spi-max-frequency = <25000000>; spi-max-frequency = <25000000>;
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 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
deleted file mode 100644 index 1716e1c..8dc181a 100644
index 1716e1c..0000000
--- a/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch --- a/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch
+++ /dev/null +++ b/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch
@@ -1,103 +0,0 @@ @@ -1,33 +1,18 @@
---- a/drivers/mtd/devices/m25p80.c ---- a/drivers/mtd/devices/m25p80.c
-+++ b/drivers/mtd/devices/m25p80.c -+++ b/drivers/mtd/devices/m25p80.c
-@@ -19,6 +19,7 @@ -@@ -19,6 +19,7 @@
...@@ -1940,65 +1939,86 @@ index 1716e1c..0000000 ...@@ -1940,65 +1939,86 @@ index 1716e1c..0000000
- -
-@@ -157,6 +159,61 @@ static int m25p80_read(struct spi_nor *n -@@ -157,6 +159,61 @@ static int m25p80_read(struct spi_nor *n
- return 0; - return 0;
- } +--- a/drivers/mtd/spi-nor/spi-nor.c
- ++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -1016,6 +1016,66 @@ write_err:
+ return ret;
}
-+static void m25p80_chunked_write(struct spi_nor *nor, loff_t _from, size_t _len, -+static void m25p80_chunked_write(struct spi_nor *nor, loff_t _from, size_t _len,
-+ size_t *_retlen, const u_char *_buf) -+ size_t *_retlen, const u_char *_buf)
-+{ ++static int spi_nor_chunked_write(struct mtd_info *mtd, loff_t _to, size_t _len,
++ size_t *_retlen, const u_char *_buf)
+{
-+ struct m25p *flash = nor->priv; -+ struct m25p *flash = nor->priv;
-+ int chunk_size; ++ struct spi_nor *nor = mtd_to_spi_nor(mtd);
-+ int retlen = 0; + int chunk_size;
-+ + int retlen = 0;
++ int ret;
+
-+ chunk_size = flash->chunk_size; -+ chunk_size = flash->chunk_size;
-+ if (!chunk_size) ++ chunk_size = nor->chunk_size;
-+ chunk_size = _len; + if (!chunk_size)
-+ + chunk_size = _len;
-+ if (nor->addr_width > 3) +
-+ chunk_size -= nor->addr_width - 3; @@ -37,35 +22,39 @@
-+ + while (retlen < _len) {
-+ while (retlen < _len) { + size_t len = min_t(int, chunk_size, _len - retlen);
-+ size_t len = min_t(int, chunk_size, _len - retlen); + const u_char *buf = _buf + retlen;
-+ const u_char *buf = _buf + retlen;
-+ loff_t from = _from + retlen; -+ loff_t from = _from + retlen;
-+ -+
-+ nor->wait_till_ready(nor); -+ nor->wait_till_ready(nor);
-+ nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0); -+ nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0);
-+ ++ loff_t to = _to + retlen;
+
-+ m25p80_write(nor, from, len, &retlen, buf); -+ m25p80_write(nor, from, len, &retlen, buf);
-+ } ++ if (nor->flags & SNOR_F_SST)
-+ *_retlen += retlen; ++ 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 m25p80_chunked_read(struct spi_nor *nor, loff_t _from, size_t _len, -+static int m25p80_chunked_read(struct spi_nor *nor, loff_t _from, size_t _len,
-+ size_t *_retlen, u_char *_buf) -+ size_t *_retlen, u_char *_buf)
-+{ ++static int spi_nor_chunked_read(struct mtd_info *mtd, loff_t _from, size_t _len,
++ size_t *_retlen, u_char *_buf)
+{
-+ struct m25p *flash = nor->priv; -+ struct m25p *flash = nor->priv;
-+ int chunk_size; ++ struct spi_nor *nor = mtd_to_spi_nor(mtd);
-+ + int chunk_size;
++ int ret;
+
-+ chunk_size = flash->chunk_size; -+ chunk_size = flash->chunk_size;
-+ if (!chunk_size) ++ chunk_size = nor->chunk_size;
-+ chunk_size = _len; + if (!chunk_size)
-+ + chunk_size = _len;
-+ *_retlen = 0; +
+ *_retlen = 0;
-+ -+
-+ while (*_retlen < _len) { + while (*_retlen < _len) {
-+ size_t len = min_t(int, chunk_size, _len - *_retlen); + size_t len = min_t(int, chunk_size, _len - *_retlen);
-+ u_char *buf = _buf + *_retlen; + u_char *buf = _buf + *_retlen;
-+ loff_t from = _from + *_retlen; + loff_t from = _from + *_retlen;
-+ int retlen = 0; + int retlen = 0;
-+ int ret = m25p80_read(nor, from, len, &retlen, buf); -+ int ret = m25p80_read(nor, from, len, &retlen, buf);
-+ +
-+ if (ret) ++ ret = spi_nor_read(mtd, from, len, &retlen, buf);
-+ return ret; + if (ret)
-+ + return ret;
-+ *_retlen += retlen; +
-+ } @@ -75,29 +64,60 @@
-+ + return 0;
-+ return 0; +}
-+} +
-+
- static int m25p80_erase(struct spi_nor *nor, loff_t offset) - static int m25p80_erase(struct spi_nor *nor, loff_t offset)
- { + static int macronix_quad_enable(struct spi_nor *nor)
{
- struct m25p *flash = nor->priv; - struct m25p *flash = nor->priv;
-@@ -197,6 +254,7 @@ static int m25p_probe(struct spi_device -@@ -197,6 +254,7 @@ static int m25p_probe(struct spi_device
- struct spi_nor *nor; - struct spi_nor *nor;
...@@ -2011,15 +2031,66 @@ index 1716e1c..0000000 ...@@ -2011,15 +2031,66 @@ index 1716e1c..0000000
-@@ -244,6 +302,14 @@ static int m25p_probe(struct spi_device -@@ -244,6 +302,14 @@ static int m25p_probe(struct spi_device
- if (ret) - if (ret)
- return ret; - return ret;
- + int ret, val;
+@@ -1197,10 +1257,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+ }
-+ if (spi->dev.of_node && -+ if (spi->dev.of_node &&
-+ !of_property_read_u32(spi->dev.of_node, "m25p,chunked-io", &val)) { -+ !of_property_read_u32(spi->dev.of_node, "m25p,chunked-io", &val)) {
-+ dev_warn(&spi->dev, "using chunked io\n"); -+ dev_warn(&spi->dev, "using chunked io\n");
-+ nor->read = m25p80_chunked_read; -+ nor->read = m25p80_chunked_read;
-+ nor->write = m25p80_chunked_write; -+ nor->write = m25p80_chunked_write;
-+ flash->chunk_size = val; -+ flash->chunk_size = val;
-+ } + /* 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;
+@@ -1228,11 +1290,20 @@ int spi_nor_scan(struct spi_nor *nor, co
+ mtd->writebufsize = nor->page_size;
+
+ if (np) {
++ u32 val;
+
- ppdata.of_node = spi->dev.of_node; - ppdata.of_node = spi->dev.of_node;
- + /* 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
+@@ -115,6 +115,7 @@ enum spi_nor_ops {
+
+ enum spi_nor_option_flags {
+ SNOR_F_USE_FSR = BIT(0),
++ SNOR_F_SST = BIT(1),
+ };
- return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, - return mtd_device_parse_register(&flash->mtd, NULL, &ppdata,
+ struct mtd_info;
+@@ -157,6 +158,7 @@ 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;
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