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Diffstat (limited to 'drivers/mtd/nand/raw')
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c14
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c20
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h11
3 files changed, 19 insertions, 26 deletions
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
index d479358758a0..447961b798b4 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
@@ -587,7 +587,7 @@ int gpmi_send_command(struct gpmi_nand_data *this)
return ret;
}
-int gpmi_send_data(struct gpmi_nand_data *this)
+int gpmi_send_data(struct gpmi_nand_data *this, const void *buf, int len)
{
struct dma_async_tx_descriptor *desc;
struct dma_chan *channel = get_dma_chan(this);
@@ -606,7 +606,7 @@ int gpmi_send_data(struct gpmi_nand_data *this)
| BF_GPMI_CTRL0_CS(chip, this)
| BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this)
| BF_GPMI_CTRL0_ADDRESS(address)
- | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len);
+ | BF_GPMI_CTRL0_XFER_COUNT(len);
pio[1] = 0;
desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
@@ -614,7 +614,7 @@ int gpmi_send_data(struct gpmi_nand_data *this)
return -EINVAL;
/* [2] send DMA request */
- prepare_data_dma(this, DMA_TO_DEVICE);
+ prepare_data_dma(this, buf, len, DMA_TO_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
@@ -629,7 +629,7 @@ int gpmi_send_data(struct gpmi_nand_data *this)
return ret;
}
-int gpmi_read_data(struct gpmi_nand_data *this)
+int gpmi_read_data(struct gpmi_nand_data *this, void *buf, int len)
{
struct dma_async_tx_descriptor *desc;
struct dma_chan *channel = get_dma_chan(this);
@@ -643,7 +643,7 @@ int gpmi_read_data(struct gpmi_nand_data *this)
| BF_GPMI_CTRL0_CS(chip, this)
| BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this)
| BF_GPMI_CTRL0_ADDRESS(BV_GPMI_CTRL0_ADDRESS__NAND_DATA)
- | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len);
+ | BF_GPMI_CTRL0_XFER_COUNT(len);
pio[1] = 0;
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio,
@@ -652,7 +652,7 @@ int gpmi_read_data(struct gpmi_nand_data *this)
return -EINVAL;
/* [2] : send DMA request */
- prepare_data_dma(this, DMA_FROM_DEVICE);
+ prepare_data_dma(this, buf, len, DMA_FROM_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
@@ -665,7 +665,7 @@ int gpmi_read_data(struct gpmi_nand_data *this)
dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_FROM_DEVICE);
if (this->direct_dma_map_ok == false)
- memcpy(this->upper_buf, this->data_buffer_dma, this->upper_len);
+ memcpy(buf, this->data_buffer_dma, len);
return ret;
}
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 6252776b32ca..c66712e594f7 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -447,15 +447,15 @@ struct dma_chan *get_dma_chan(struct gpmi_nand_data *this)
}
/* Can we use the upper's buffer directly for DMA? */
-void prepare_data_dma(struct gpmi_nand_data *this, enum dma_data_direction dr)
+void prepare_data_dma(struct gpmi_nand_data *this, const void *buf, int len,
+ enum dma_data_direction dr)
{
struct scatterlist *sgl = &this->data_sgl;
int ret;
/* first try to map the upper buffer directly */
- if (virt_addr_valid(this->upper_buf) &&
- !object_is_on_stack(this->upper_buf)) {
- sg_init_one(sgl, this->upper_buf, this->upper_len);
+ if (virt_addr_valid(buf) && !object_is_on_stack(buf)) {
+ sg_init_one(sgl, buf, len);
ret = dma_map_sg(this->dev, sgl, 1, dr);
if (ret == 0)
goto map_fail;
@@ -466,10 +466,10 @@ void prepare_data_dma(struct gpmi_nand_data *this, enum dma_data_direction dr)
map_fail:
/* We have to use our own DMA buffer. */
- sg_init_one(sgl, this->data_buffer_dma, this->upper_len);
+ sg_init_one(sgl, this->data_buffer_dma, len);
if (dr == DMA_TO_DEVICE)
- memcpy(this->data_buffer_dma, this->upper_buf, this->upper_len);
+ memcpy(this->data_buffer_dma, buf, len);
dma_map_sg(this->dev, sgl, 1, dr);
@@ -929,10 +929,8 @@ static void gpmi_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
struct gpmi_nand_data *this = nand_get_controller_data(chip);
dev_dbg(this->dev, "len is %d\n", len);
- this->upper_buf = buf;
- this->upper_len = len;
- gpmi_read_data(this);
+ gpmi_read_data(this, buf, len);
}
static void gpmi_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
@@ -941,10 +939,8 @@ static void gpmi_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
struct gpmi_nand_data *this = nand_get_controller_data(chip);
dev_dbg(this->dev, "len is %d\n", len);
- this->upper_buf = (uint8_t *)buf;
- this->upper_len = len;
- gpmi_send_data(this);
+ gpmi_send_data(this, buf, len);
}
static uint8_t gpmi_read_byte(struct mtd_info *mtd)
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
index 2397010a8963..fba72ad28263 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
@@ -141,10 +141,6 @@ struct gpmi_nand_data {
int current_chip;
unsigned int command_length;
- /* passed from upper layer */
- uint8_t *upper_buf;
- int upper_len;
-
/* for DMA operations */
bool direct_dma_map_ok;
@@ -178,7 +174,7 @@ struct gpmi_nand_data {
/* Common Services */
int common_nfc_set_geometry(struct gpmi_nand_data *);
struct dma_chan *get_dma_chan(struct gpmi_nand_data *);
-void prepare_data_dma(struct gpmi_nand_data *,
+void prepare_data_dma(struct gpmi_nand_data *, const void *buf, int len,
enum dma_data_direction dr);
int start_dma_without_bch_irq(struct gpmi_nand_data *,
struct dma_async_tx_descriptor *);
@@ -197,8 +193,9 @@ int gpmi_disable_clk(struct gpmi_nand_data *this);
int gpmi_setup_data_interface(struct mtd_info *mtd, int chipnr,
const struct nand_data_interface *conf);
void gpmi_nfc_apply_timings(struct gpmi_nand_data *this);
-int gpmi_read_data(struct gpmi_nand_data *);
-int gpmi_send_data(struct gpmi_nand_data *);
+int gpmi_read_data(struct gpmi_nand_data *, void *buf, int len);
+int gpmi_send_data(struct gpmi_nand_data *, const void *buf, int len);
+
int gpmi_send_page(struct gpmi_nand_data *,
dma_addr_t payload, dma_addr_t auxiliary);
int gpmi_read_page(struct gpmi_nand_data *,
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-26 16:08:59 +0300