sf: sst: setup read func

[u-boot] / drivers / mtd / spi / stmicro.c

diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index 31340279cb872f98e0fdafe84f087ff0dc0f7786..a1980b1ed78a6da72f6bd149e778b677c9146190 100644 (file)
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -55,8 +55,6 @@
 #define STM_ID_M25P80          0x14
 #define STM_ID_M25P128         0x18
 
-#define STMICRO_SR_WIP         (1 << 0)        /* Write-in-Progress */
-
 struct stmicro_spi_flash_params {
        u8 idcode1;
        u16 page_size;
@@ -136,60 +134,6 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
        },
 };
 
-static int stmicro_wait_ready(struct spi_flash *flash, unsigned long timeout)
-{
-       struct spi_slave *spi = flash->spi;
-       unsigned long timebase;
-       int ret;
-       u8 cmd = CMD_M25PXX_RDSR;
-       u8 status;
-
-       ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
-       if (ret) {
-               debug("SF: Failed to send command %02x: %d\n", cmd, ret);
-               return ret;
-       }
-
-       timebase = get_timer(0);
-       do {
-               ret = spi_xfer(spi, 8, NULL, &status, 0);
-               if (ret)
-                       return -1;
-
-               if ((status & STMICRO_SR_WIP) == 0)
-                       break;
-
-       } while (get_timer(timebase) < timeout);
-
-       spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
-       if ((status & STMICRO_SR_WIP) == 0)
-               return 0;
-
-       /* Timed out */
-       return -1;
-}
-
-static int stmicro_read_fast(struct spi_flash *flash,
-                            u32 offset, size_t len, void *buf)
-{
-       struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
-       unsigned long page_addr;
-       unsigned long page_size;
-       u8 cmd[5];
-
-       page_size = stm->params->page_size;
-       page_addr = offset / page_size;
-
-       cmd[0] = CMD_READ_ARRAY_FAST;
-       cmd[1] = page_addr >> 8;
-       cmd[2] = page_addr;
-       cmd[3] = offset % page_size;
-       cmd[4] = 0x00;
-
-       return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
-}
-
 static int stmicro_write(struct spi_flash *flash,
                         u32 offset, size_t len, const void *buf)
 {
@@ -238,11 +182,9 @@ static int stmicro_write(struct spi_flash *flash,
                        break;
                }
 
-               ret = stmicro_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
-               if (ret < 0) {
-                       debug("SF: STMicro page programming timed out\n");
+               ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
+               if (ret)
                        break;
-               }
 
                page_addr++;
                byte_addr = 0;
@@ -257,65 +199,7 @@ static int stmicro_write(struct spi_flash *flash,
 
 int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-       struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
-       unsigned long sector_size;
-       size_t actual;
-       int ret;
-       u8 cmd[4];
-
-       /*
-        * This function currently uses sector erase only.
-        * probably speed things up by using bulk erase
-        * when possible.
-        */
-
-       sector_size = stm->params->page_size * stm->params->pages_per_sector;
-
-       if (offset % sector_size || len % sector_size) {
-               debug("SF: Erase offset/length not multiple of sector size\n");
-               return -1;
-       }
-
-       len /= sector_size;
-       cmd[0] = CMD_M25PXX_SE;
-       cmd[2] = 0x00;
-       cmd[3] = 0x00;
-
-       ret = spi_claim_bus(flash->spi);
-       if (ret) {
-               debug("SF: Unable to claim SPI bus\n");
-               return ret;
-       }
-
-       ret = 0;
-       for (actual = 0; actual < len; actual++) {
-               cmd[1] = offset >> 16;
-               offset += sector_size;
-
-               ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0);
-               if (ret < 0) {
-                       debug("SF: Enabling Write failed\n");
-                       break;
-               }
-
-               ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0);
-               if (ret < 0) {
-                       debug("SF: STMicro page erase failed\n");
-                       break;
-               }
-
-               ret = stmicro_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
-               if (ret < 0) {
-                       debug("SF: STMicro page erase timed out\n");
-                       break;
-               }
-       }
-
-       debug("SF: STMicro: Successfully erased %u bytes @ 0x%x\n",
-             len * sector_size, offset);
-
-       spi_release_bus(flash->spi);
-       return ret;
+       return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
@@ -361,13 +245,9 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
 
        stm->flash.write = stmicro_write;
        stm->flash.erase = stmicro_erase;
-       stm->flash.read = stmicro_read_fast;
-       stm->flash.size = params->page_size * params->pages_per_sector
-           * params->nr_sectors;
-
-       printf("SF: Detected %s with page size %u, total ",
-              params->name, params->page_size);
-       print_size(stm->flash.size, "\n");
+       stm->flash.read = spi_flash_cmd_read_fast;
+       stm->flash.sector_size = params->page_size * params->pages_per_sector;
+       stm->flash.size = stm->flash.sector_size * params->nr_sectors;
 
        return &stm->flash;
 }