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| author | Pekon Gupta <pekon@ti.com> | 2014-03-20 18:48:36 +0530 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-03-25 23:09:02 -0700 |
| commit | 79f013518d435e238e6bddd0073de631bbefb556 (patch) | |
| tree | 725d64591ed30edb913828c6b92511eecc1e087d | |
| parent | ea0760244d235688b5fae4e5cdd9412c1fb1c2fe (diff) | |
| download | blackbird-op-linux-79f013518d435e238e6bddd0073de631bbefb556.tar.gz blackbird-op-linux-79f013518d435e238e6bddd0073de631bbefb556.zip | |
mtd: devices: elm: configure parallel channels based on ecc_steps
ELM hardware can process up to maximum of 8 hannels in parallel for
ECC error detection. Currently the number of channels getting configured for
processing is static determined by macro ERROR_VECTOR_MAX. However, the actual
number of channels that need to be processed is the ECC step number.
This patch just avoids configuring extra unused channels.
Signed-off-by: Pekon Gupta <pekon@ti.com>
Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| -rw-r--r-- | drivers/mtd/devices/elm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/mtd/devices/elm.c b/drivers/mtd/devices/elm.c index 4fbfaf65fabd..26df41f20c1f 100644 --- a/drivers/mtd/devices/elm.c +++ b/drivers/mtd/devices/elm.c @@ -84,6 +84,7 @@ struct elm_info { struct list_head list; enum bch_ecc bch_type; struct elm_registers elm_regs; + int ecc_steps; int ecc_syndrome_size; }; @@ -128,6 +129,7 @@ int elm_config(struct device *dev, enum bch_ecc bch_type, reg_val = (bch_type & ECC_BCH_LEVEL_MASK) | (ELM_ECC_SIZE << 16); elm_write_reg(info, ELM_LOCATION_CONFIG, reg_val); info->bch_type = bch_type; + info->ecc_steps = ecc_steps; info->ecc_syndrome_size = ecc_syndrome_size; return 0; @@ -170,7 +172,7 @@ static void elm_load_syndrome(struct elm_info *info, int i, offset; u32 val; - for (i = 0; i < ERROR_VECTOR_MAX; i++) { + for (i = 0; i < info->ecc_steps; i++) { /* Check error reported */ if (err_vec[i].error_reported) { @@ -238,7 +240,7 @@ static void elm_start_processing(struct elm_info *info, * Set syndrome vector valid, so that ELM module * will process it for vectors error is reported */ - for (i = 0; i < ERROR_VECTOR_MAX; i++) { + for (i = 0; i < info->ecc_steps; i++) { if (err_vec[i].error_reported) { offset = ELM_SYNDROME_FRAGMENT_6 + SYNDROME_FRAGMENT_REG_SIZE * i; @@ -267,7 +269,7 @@ static void elm_error_correction(struct elm_info *info, int offset; u32 reg_val; - for (i = 0; i < ERROR_VECTOR_MAX; i++) { + for (i = 0; i < info->ecc_steps; i++) { /* Check error reported */ if (err_vec[i].error_reported) { |
