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path: root/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
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Diffstat (limited to 'drivers/mtd/nand/gpmi-nand/gpmi-lib.c')
-rw-r--r--drivers/mtd/nand/gpmi-nand/gpmi-lib.c127
1 files changed, 63 insertions, 64 deletions
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
index aaced29727fb..dd1df605a1d6 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c
@@ -20,6 +20,7 @@
*/
#include <linux/delay.h>
#include <linux/clk.h>
+#include <linux/slab.h>
#include "gpmi-nand.h"
#include "gpmi-regs.h"
@@ -207,30 +208,41 @@ void gpmi_dump_info(struct gpmi_nand_data *this)
u32 reg;
int i;
- pr_err("Show GPMI registers :\n");
+ dev_err(this->dev, "Show GPMI registers :\n");
for (i = 0; i <= HW_GPMI_DEBUG / 0x10 + 1; i++) {
reg = readl(r->gpmi_regs + i * 0x10);
- pr_err("offset 0x%.3x : 0x%.8x\n", i * 0x10, reg);
+ dev_err(this->dev, "offset 0x%.3x : 0x%.8x\n", i * 0x10, reg);
}
/* start to print out the BCH info */
- pr_err("Show BCH registers :\n");
+ dev_err(this->dev, "Show BCH registers :\n");
for (i = 0; i <= HW_BCH_VERSION / 0x10 + 1; i++) {
reg = readl(r->bch_regs + i * 0x10);
- pr_err("offset 0x%.3x : 0x%.8x\n", i * 0x10, reg);
+ dev_err(this->dev, "offset 0x%.3x : 0x%.8x\n", i * 0x10, reg);
}
- pr_err("BCH Geometry :\n");
- pr_err("GF length : %u\n", geo->gf_len);
- pr_err("ECC Strength : %u\n", geo->ecc_strength);
- pr_err("Page Size in Bytes : %u\n", geo->page_size);
- pr_err("Metadata Size in Bytes : %u\n", geo->metadata_size);
- pr_err("ECC Chunk Size in Bytes: %u\n", geo->ecc_chunk_size);
- pr_err("ECC Chunk Count : %u\n", geo->ecc_chunk_count);
- pr_err("Payload Size in Bytes : %u\n", geo->payload_size);
- pr_err("Auxiliary Size in Bytes: %u\n", geo->auxiliary_size);
- pr_err("Auxiliary Status Offset: %u\n", geo->auxiliary_status_offset);
- pr_err("Block Mark Byte Offset : %u\n", geo->block_mark_byte_offset);
- pr_err("Block Mark Bit Offset : %u\n", geo->block_mark_bit_offset);
+ dev_err(this->dev, "BCH Geometry :\n"
+ "GF length : %u\n"
+ "ECC Strength : %u\n"
+ "Page Size in Bytes : %u\n"
+ "Metadata Size in Bytes : %u\n"
+ "ECC Chunk Size in Bytes: %u\n"
+ "ECC Chunk Count : %u\n"
+ "Payload Size in Bytes : %u\n"
+ "Auxiliary Size in Bytes: %u\n"
+ "Auxiliary Status Offset: %u\n"
+ "Block Mark Byte Offset : %u\n"
+ "Block Mark Bit Offset : %u\n",
+ geo->gf_len,
+ geo->ecc_strength,
+ geo->page_size,
+ geo->metadata_size,
+ geo->ecc_chunk_size,
+ geo->ecc_chunk_count,
+ geo->payload_size,
+ geo->auxiliary_size,
+ geo->auxiliary_status_offset,
+ geo->block_mark_byte_offset,
+ geo->block_mark_bit_offset);
}
/* Configures the geometry for BCH. */
@@ -265,8 +277,8 @@ int bch_set_geometry(struct gpmi_nand_data *this)
* chip, otherwise it will lock up. So we skip resetting BCH on the MX23.
* On the other hand, the MX28 needs the reset, because one case has been
* seen where the BCH produced ECC errors constantly after 10000
- * consecutive reboots. The latter case has not been seen on the MX23 yet,
- * still we don't know if it could happen there as well.
+ * consecutive reboots. The latter case has not been seen on the MX23
+ * yet, still we don't know if it could happen there as well.
*/
ret = gpmi_reset_block(r->bch_regs, GPMI_IS_MX23(this));
if (ret)
@@ -353,7 +365,7 @@ static int gpmi_nfc_compute_hardware_timing(struct gpmi_nand_data *this,
improved_timing_is_available =
(target.tREA_in_ns >= 0) &&
(target.tRLOH_in_ns >= 0) &&
- (target.tRHOH_in_ns >= 0) ;
+ (target.tRHOH_in_ns >= 0);
/* Inspect the clock. */
nfc->clock_frequency_in_hz = clk_get_rate(r->clock[0]);
@@ -911,10 +923,14 @@ static int enable_edo_mode(struct gpmi_nand_data *this, int mode)
struct resources *r = &this->resources;
struct nand_chip *nand = &this->nand;
struct mtd_info *mtd = &this->mtd;
- uint8_t feature[ONFI_SUBFEATURE_PARAM_LEN] = {};
+ uint8_t *feature;
unsigned long rate;
int ret;
+ feature = kzalloc(ONFI_SUBFEATURE_PARAM_LEN, GFP_KERNEL);
+ if (!feature)
+ return -ENOMEM;
+
nand->select_chip(mtd, 0);
/* [1] send SET FEATURE commond to NAND */
@@ -942,11 +958,13 @@ static int enable_edo_mode(struct gpmi_nand_data *this, int mode)
this->flags |= GPMI_ASYNC_EDO_ENABLED;
this->timing_mode = mode;
+ kfree(feature);
dev_info(this->dev, "enable the asynchronous EDO mode %d\n", mode);
return 0;
err_out:
nand->select_chip(mtd, -1);
+ kfree(feature);
dev_err(this->dev, "mode:%d ,failed in set feature.\n", mode);
return -EINVAL;
}
@@ -986,7 +1004,7 @@ void gpmi_begin(struct gpmi_nand_data *this)
/* Enable the clock. */
ret = gpmi_enable_clk(this);
if (ret) {
- pr_err("We failed in enable the clk\n");
+ dev_err(this->dev, "We failed in enable the clk\n");
goto err_out;
}
@@ -1003,7 +1021,7 @@ void gpmi_begin(struct gpmi_nand_data *this)
/* [1] Set HW_GPMI_TIMING0 */
reg = BF_GPMI_TIMING0_ADDRESS_SETUP(hw.address_setup_in_cycles) |
BF_GPMI_TIMING0_DATA_HOLD(hw.data_hold_in_cycles) |
- BF_GPMI_TIMING0_DATA_SETUP(hw.data_setup_in_cycles) ;
+ BF_GPMI_TIMING0_DATA_SETUP(hw.data_setup_in_cycles);
writel(reg, gpmi_regs + HW_GPMI_TIMING0);
@@ -1090,7 +1108,7 @@ int gpmi_is_ready(struct gpmi_nand_data *this, unsigned chip)
mask = MX28_BF_GPMI_STAT_READY_BUSY(1 << chip);
reg = readl(r->gpmi_regs + HW_GPMI_STAT);
} else
- pr_err("unknow arch.\n");
+ dev_err(this->dev, "unknow arch.\n");
return reg & mask;
}
@@ -1121,10 +1139,8 @@ int gpmi_send_command(struct gpmi_nand_data *this)
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
- if (!desc) {
- pr_err("step 1 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [2] send out the COMMAND + ADDRESS string stored in @buffer */
sgl = &this->cmd_sgl;
@@ -1134,11 +1150,8 @@ int gpmi_send_command(struct gpmi_nand_data *this)
desc = dmaengine_prep_slave_sg(channel,
sgl, 1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-
- if (!desc) {
- pr_err("step 2 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [3] submit the DMA */
set_dma_type(this, DMA_FOR_COMMAND);
@@ -1167,20 +1180,17 @@ int gpmi_send_data(struct gpmi_nand_data *this)
pio[1] = 0;
desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
- if (!desc) {
- pr_err("step 1 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [2] send DMA request */
prepare_data_dma(this, DMA_TO_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (!desc) {
- pr_err("step 2 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
+
/* [3] submit the DMA */
set_dma_type(this, DMA_FOR_WRITE_DATA);
return start_dma_without_bch_irq(this, desc);
@@ -1204,20 +1214,16 @@ int gpmi_read_data(struct gpmi_nand_data *this)
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
- if (!desc) {
- pr_err("step 1 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [2] : send DMA request */
prepare_data_dma(this, DMA_FROM_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (!desc) {
- pr_err("step 2 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [3] : submit the DMA */
set_dma_type(this, DMA_FOR_READ_DATA);
@@ -1262,10 +1268,9 @@ int gpmi_send_page(struct gpmi_nand_data *this,
(struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE,
DMA_CTRL_ACK);
- if (!desc) {
- pr_err("step 2 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
+
set_dma_type(this, DMA_FOR_WRITE_ECC_PAGE);
return start_dma_with_bch_irq(this, desc);
}
@@ -1297,10 +1302,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio, 2,
DMA_TRANS_NONE, 0);
- if (!desc) {
- pr_err("step 1 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [2] Enable the BCH block and read. */
command_mode = BV_GPMI_CTRL0_COMMAND_MODE__READ;
@@ -1327,10 +1330,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
(struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (!desc) {
- pr_err("step 2 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [3] Disable the BCH block */
command_mode = BV_GPMI_CTRL0_COMMAND_MODE__WAIT_FOR_READY;
@@ -1348,10 +1349,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
(struct scatterlist *)pio, 3,
DMA_TRANS_NONE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (!desc) {
- pr_err("step 3 error\n");
- return -1;
- }
+ if (!desc)
+ return -EINVAL;
/* [4] submit the DMA */
set_dma_type(this, DMA_FOR_READ_ECC_PAGE);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.