git.openwrt.org Git - openwrt/staging/blogic.git/blob

   1 From 0ff26c3761e5a17d21e7ee0bd9a2068f55c84d55 Mon Sep 17 00:00:00 2001
   2 From: Yunhui Cui <yunhui.cui@nxp.com>
   3 Date: Wed, 15 Jun 2016 14:57:08 +0800
   4 Subject: [PATCH 57/93] driver: spi: Fix DSPI bug after adding exceed 16MB for
   5  QSPI
   6
   7 => sf probe 1:0
   8 SF: Detected N25Q128A with page size 256 Bytes, erase size 64 KiB, total
   9 16 MiB
  10 => mw.l     80000000 55555555 1100
  11 => mw.l     80020000 aaaaaaaa 1100
  12 => sf erase 0 +1100
  13 SF: 65536 bytes @ 0x0 Erased: OK
  14 => sf write 80020000 0 1100
  15 device 0 offset 0x0, size 0x1100
  16 SF: 4352 bytes @ 0x0 Written: OK
  17 => sf read  80000000 0 1100
  18 device 0 offset 0x0, size 0x1100
  19 SF: 4352 bytes @ 0x0 Read: OK
  20 => cmp.b 80000000 80020000 1100
  21 byte at 0x00000000800010fe (0xff) != byte at 0x00000000800210fe (0xaa)
  22 Total of 4350 byte(s) were the same
  23
  24 Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com>
  25 ---
  26  drivers/mtd/spi/spi_flash.c |   21 +++++++++++++++------
  27  1 file changed, 15 insertions(+), 6 deletions(-)
  28
  29 diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
  30 index b0f09ab..e04bd55 100644
  31 --- a/drivers/mtd/spi/spi_flash.c
  32 +++ b/drivers/mtd/spi/spi_flash.c
  33 @@ -326,8 +326,11 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
  34                         return -EINVAL;
  35                 }
  36         }
  37 +       if (flash->size > SPI_FLASH_16MB_BOUN)
  38 +               cmdsz = SPI_FLASH_CMD_LEN_EXT + flash->dummy_byte;
  39 +       else
  40 +               cmdsz = SPI_FLASH_CMD_LEN;
  41
  42 -       cmdsz = SPI_FLASH_CMD_LEN_EXT + flash->dummy_byte;
  43         cmd = calloc(1, cmdsz);
  44         if (!cmd) {
  45                 debug("SF: Failed to allocate cmd\n");
  46 @@ -353,7 +356,7 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
  47                 debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
  48                       cmd[2], cmd[3], erase_addr);
  49
  50 -               ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0);
  51 +               ret = spi_flash_write_common(flash, cmd, cmdsz, NULL, 0);
  52                 if (ret < 0) {
  53                         debug("SF: erase failed\n");
  54                         break;
  55 @@ -385,8 +388,10 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
  56                         return -EINVAL;
  57                 }
  58         }
  59 -
  60 -       cmdsz = SPI_FLASH_CMD_LEN_EXT + flash->dummy_byte;
  61 +       if (flash->size > SPI_FLASH_16MB_BOUN)
  62 +               cmdsz = SPI_FLASH_CMD_LEN_EXT + flash->dummy_byte;
  63 +       else
  64 +               cmdsz = SPI_FLASH_CMD_LEN;
  65         cmd = calloc(1, cmdsz);
  66         if (!cmd) {
  67                 debug("SF: Failed to allocate cmd\n");
  68 @@ -418,7 +423,7 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
  69                 debug("SF: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n",
  70                       buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
  71
  72 -               ret = spi_flash_write_common(flash, cmd, sizeof(cmd),
  73 +               ret = spi_flash_write_common(flash, cmd, cmdsz,
  74                                         buf + actual, chunk_len);
  75                 if (ret < 0) {
  76                         debug("SF: write failed\n");
  77 @@ -482,7 +487,11 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
  78                 return 0;
  79         }
  80
  81 -       cmdsz = SPI_FLASH_CMD_LEN_EXT + flash->dummy_byte;
  82 +       if (flash->size > SPI_FLASH_16MB_BOUN)
  83 +               cmdsz = SPI_FLASH_CMD_LEN_EXT + flash->dummy_byte;
  84 +       else
  85 +               cmdsz = SPI_FLASH_CMD_LEN + flash->dummy_byte;
  86 +
  87         cmd = calloc(1, cmdsz);
  88         if (!cmd) {
  89                 debug("SF: Failed to allocate cmd\n");
  90 --
  91 1.7.9.5
  92