package/boot/uboot-lantiq/patches/0004-sf-add-slim-probe-funtions-for-SPL.patch

   1 From da11da943487e2f724f25d409bcaa1f099637c0b Mon Sep 17 00:00:00 2001
   2 From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   3 Date: Sun, 13 Oct 2013 14:56:45 +0200
   4 Subject: sf: add slim probe funtions for SPL
   5
   6 Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   7
   8 --- a/drivers/mtd/spi/sf_probe.c
   9 +++ b/drivers/mtd/spi/sf_probe.c
  10 @@ -365,3 +365,58 @@ void spi_flash_free(struct spi_flash *fl
  11         spi_free_slave(flash->spi);
  12         free(flash);
  13  }
  14 +
  15 +#ifdef CONFIG_SPI_SPL_SIMPLE
  16 +int spl_spi_flash_probe(struct spi_flash *flash)
  17 +{
  18 +       struct spi_slave *spi;
  19 +       u8 idcode[5];
  20 +       int ret;
  21 +
  22 +       /* Setup spi_slave */
  23 +       spi = spi_setup_slave(CONFIG_SPL_SPI_BUS, CONFIG_SPL_SPI_CS,
  24 +               CONFIG_SPL_SPI_MAX_HZ, CONFIG_SPL_SPI_MODE);
  25 +       if (!spi) {
  26 +               debug("SF: Failed to set up slave\n");
  27 +               return -1;
  28 +       }
  29 +
  30 +       /* Claim spi bus */
  31 +       ret = spi_claim_bus(spi);
  32 +       if (ret) {
  33 +               debug("SF: Failed to claim SPI bus: %d\n", ret);
  34 +               goto err_claim_bus;
  35 +       }
  36 +
  37 +       /* Read the ID codes */
  38 +       ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
  39 +       if (ret) {
  40 +               debug("SF: Failed to get idcodes\n");
  41 +               goto err_read_id;
  42 +       }
  43 +
  44 +       /* Validate params from spi_flash_params table */
  45 +       flash->spi = spi;
  46 +       ret = spi_flash_validate_params(flash, idcode);
  47 +       if (ret)
  48 +               goto err_read_id;
  49 +
  50 +       /* Release spi bus */
  51 +       spi_release_bus(spi);
  52 +
  53 +       return 0;
  54 +
  55 +err_read_id:
  56 +       spi_release_bus(spi);
  57 +err_claim_bus:
  58 +       spi_free_slave(spi);
  59 +       flash->spi = NULL;
  60 +
  61 +       return ret;
  62 +}
  63 +
  64 +void spl_spi_flash_free(struct spi_flash *flash)
  65 +{
  66 +       spi_free_slave(flash->spi);
  67 +}
  68 +#endif
  69 --- a/include/spi_flash.h
  70 +++ b/include/spi_flash.h
  71 @@ -69,6 +69,9 @@ struct spi_flash *spi_flash_probe(unsign
  72                 unsigned int max_hz, unsigned int spi_mode);
  73  void spi_flash_free(struct spi_flash *flash);
  74
  75 +int spl_spi_flash_probe(struct spi_flash *flash);
  76 +void spl_spi_flash_free(struct spi_flash *flash);
  77 +
  78  static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
  79                 size_t len, void *buf)
  80  {