@@ -719,6 +719,42 @@ static int bch_write(struct mtd_info *mtd, struct nand_chip *chip,
}
/*
+ * Hamming-FLEX operations
+ */
+static int flex_wait_rbn(struct nandi_controller *nandi)
+{
+ int ret;
+
+ ret = wait_for_completion_timeout(&nandi->rbn_completed, HZ/2);
+ if (!ret)
+ dev_err(nandi->dev, "FLEX RBn timeout\n");
+
+ return ret;
+}
+
+static void flex_cmd(struct nandi_controller *nandi, uint8_t cmd)
+{
+ uint32_t val;
+
+ val = (FLEX_CMD_CSN | FLEX_CMD_BEATS_1 | cmd);
+ writel(val, nandi->base + NANDHAM_FLEX_CMD);
+}
+
+static void flex_addr(struct nandi_controller *nandi,
+ uint32_t addr, int cycles)
+{
+ addr &= 0x00ffffff;
+
+ BUG_ON(cycles < 1);
+ BUG_ON(cycles > 3);
+
+ addr |= (FLEX_ADDR_CSN | FLEX_ADDR_ADD8_VALID);
+ addr |= (cycles & 0x3) << 28;
+
+ writel(addr, nandi->base + NANDHAM_FLEX_ADD);
+}
+
+/*
* Bad Block Tables/Bad Block Markers
*/
#define BBT_MARK_BAD_FACTORY 0x0
Including; a check for Ready/NotBusy (RBn) (i.e. wait for current operation to finish and a method to issue Flex commands to the controller. Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/mtd/nand/stm_nand_bch.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)