@@ -29,7 +29,7 @@
/*
* MTD structure for E3 (Delta)
*/
-struct ams_delta_nand {
+struct gpio_nand {
struct nand_controller base;
struct nand_chip nand_chip;
struct gpio_desc *gpiod_rdy;
@@ -43,19 +43,18 @@ struct ams_delta_nand {
bool data_in;
unsigned int tRP;
unsigned int tWP;
- u8 (*io_read)(struct ams_delta_nand *this);
- void (*io_write)(struct ams_delta_nand *this,
- u8 byte);
+ u8 (*io_read)(struct gpio_nand *this);
+ void (*io_write)(struct gpio_nand *this, u8 byte);
};
-static void ams_delta_write_commit(struct ams_delta_nand *priv)
+static void gpio_nand_write_commit(struct gpio_nand *priv)
{
gpiod_set_value(priv->gpiod_nwe, 1);
ndelay(priv->tWP);
gpiod_set_value(priv->gpiod_nwe, 0);
}
-static void ams_delta_io_write(struct ams_delta_nand *priv, u8 byte)
+static void gpio_nand_io_write(struct gpio_nand *priv, u8 byte)
{
struct gpio_descs *data_gpiods = priv->data_gpiods;
DECLARE_BITMAP(values, BITS_PER_TYPE(byte)) = { byte, };
@@ -63,10 +62,10 @@ static void ams_delta_io_write(struct ams_delta_nand *priv, u8 byte)
gpiod_set_raw_array_value(data_gpiods->ndescs, data_gpiods->desc,
data_gpiods->info, values);
- ams_delta_write_commit(priv);
+ gpio_nand_write_commit(priv);
}
-static void ams_delta_dir_output(struct ams_delta_nand *priv, u8 byte)
+static void gpio_nand_dir_output(struct gpio_nand *priv, u8 byte)
{
struct gpio_descs *data_gpiods = priv->data_gpiods;
DECLARE_BITMAP(values, BITS_PER_TYPE(byte)) = { byte, };
@@ -76,12 +75,12 @@ static void ams_delta_dir_output(struct ams_delta_nand *priv, u8 byte)
gpiod_direction_output_raw(data_gpiods->desc[i],
test_bit(i, values));
- ams_delta_write_commit(priv);
+ gpio_nand_write_commit(priv);
priv->data_in = false;
}
-static u8 ams_delta_io_read(struct ams_delta_nand *priv)
+static u8 gpio_nand_io_read(struct gpio_nand *priv)
{
u8 res;
struct gpio_descs *data_gpiods = priv->data_gpiods;
@@ -99,7 +98,7 @@ static u8 ams_delta_io_read(struct ams_delta_nand *priv)
return res;
}
-static void ams_delta_dir_input(struct ams_delta_nand *priv)
+static void gpio_nand_dir_input(struct gpio_nand *priv)
{
struct gpio_descs *data_gpiods = priv->data_gpiods;
int i;
@@ -110,68 +109,67 @@ static void ams_delta_dir_input(struct ams_delta_nand *priv)
priv->data_in = true;
}
-static void ams_delta_write_buf(struct ams_delta_nand *priv, const u8 *buf,
- int len)
+static void gpio_nand_write_buf(struct gpio_nand *priv, const u8 *buf, int len)
{
int i = 0;
if (len > 0 && priv->data_in)
- ams_delta_dir_output(priv, buf[i++]);
+ gpio_nand_dir_output(priv, buf[i++]);
while (i < len)
priv->io_write(priv, buf[i++]);
}
-static void ams_delta_read_buf(struct ams_delta_nand *priv, u8 *buf, int len)
+static void gpio_nand_read_buf(struct gpio_nand *priv, u8 *buf, int len)
{
int i;
if (priv->data_gpiods && !priv->data_in)
- ams_delta_dir_input(priv);
+ gpio_nand_dir_input(priv);
for (i = 0; i < len; i++)
buf[i] = priv->io_read(priv);
}
-static void ams_delta_ctrl_cs(struct ams_delta_nand *priv, bool assert)
+static void gpio_nand_ctrl_cs(struct gpio_nand *priv, bool assert)
{
gpiod_set_value(priv->gpiod_nce, assert);
}
-static int ams_delta_exec_op(struct nand_chip *this,
+static int gpio_nand_exec_op(struct nand_chip *this,
const struct nand_operation *op, bool check_only)
{
- struct ams_delta_nand *priv = nand_get_controller_data(this);
+ struct gpio_nand *priv = nand_get_controller_data(this);
const struct nand_op_instr *instr;
int ret = 0;
if (check_only)
return 0;
- ams_delta_ctrl_cs(priv, 1);
+ gpio_nand_ctrl_cs(priv, 1);
for (instr = op->instrs; instr < op->instrs + op->ninstrs; instr++) {
switch (instr->type) {
case NAND_OP_CMD_INSTR:
gpiod_set_value(priv->gpiod_cle, 1);
- ams_delta_write_buf(priv, &instr->ctx.cmd.opcode, 1);
+ gpio_nand_write_buf(priv, &instr->ctx.cmd.opcode, 1);
gpiod_set_value(priv->gpiod_cle, 0);
break;
case NAND_OP_ADDR_INSTR:
gpiod_set_value(priv->gpiod_ale, 1);
- ams_delta_write_buf(priv, instr->ctx.addr.addrs,
+ gpio_nand_write_buf(priv, instr->ctx.addr.addrs,
instr->ctx.addr.naddrs);
gpiod_set_value(priv->gpiod_ale, 0);
break;
case NAND_OP_DATA_IN_INSTR:
- ams_delta_read_buf(priv, instr->ctx.data.buf.in,
+ gpio_nand_read_buf(priv, instr->ctx.data.buf.in,
instr->ctx.data.len);
break;
case NAND_OP_DATA_OUT_INSTR:
- ams_delta_write_buf(priv, instr->ctx.data.buf.out,
+ gpio_nand_write_buf(priv, instr->ctx.data.buf.out,
instr->ctx.data.len);
break;
@@ -188,15 +186,15 @@ static int ams_delta_exec_op(struct nand_chip *this,
break;
}
- ams_delta_ctrl_cs(priv, 0);
+ gpio_nand_ctrl_cs(priv, 0);
return ret;
}
-static int ams_delta_setup_data_interface(struct nand_chip *this, int csline,
+static int gpio_nand_setup_data_interface(struct nand_chip *this, int csline,
const struct nand_data_interface *cf)
{
- struct ams_delta_nand *priv = nand_get_controller_data(this);
+ struct gpio_nand *priv = nand_get_controller_data(this);
const struct nand_sdr_timings *sdr = nand_get_sdr_timings(cf);
struct device *dev = &nand_to_mtd(this)->dev;
@@ -217,23 +215,23 @@ static int ams_delta_setup_data_interface(struct nand_chip *this, int csline,
return 0;
}
-static const struct nand_controller_ops ams_delta_ops = {
- .exec_op = ams_delta_exec_op,
- .setup_data_interface = ams_delta_setup_data_interface,
+static const struct nand_controller_ops gpio_nand_ops = {
+ .exec_op = gpio_nand_exec_op,
+ .setup_data_interface = gpio_nand_setup_data_interface,
};
/*
* Main initialization routine
*/
-static int ams_delta_init(struct platform_device *pdev)
+static int gpio_nand_probe(struct platform_device *pdev)
{
struct gpio_nand_platdata *pdata = dev_get_platdata(&pdev->dev);
const struct mtd_partition *partitions = NULL;
int num_partitions = 0;
- struct ams_delta_nand *priv;
+ struct gpio_nand *priv;
struct nand_chip *this;
struct mtd_info *mtd;
- int (*probe)(struct platform_device *pdev, struct ams_delta_nand *priv);
+ int (*probe)(struct platform_device *pdev, struct gpio_nand *priv);
int err = 0;
if (pdata) {
@@ -242,7 +240,7 @@ static int ams_delta_init(struct platform_device *pdev)
}
/* Allocate memory for MTD device structure and private data */
- priv = devm_kzalloc(&pdev->dev, sizeof(struct ams_delta_nand),
+ priv = devm_kzalloc(&pdev->dev, sizeof(struct gpio_nand),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
@@ -329,8 +327,8 @@ static int ams_delta_init(struct platform_device *pdev)
return -ENODEV;
}
- priv->io_read = ams_delta_io_read;
- priv->io_write = ams_delta_io_write;
+ priv->io_read = gpio_nand_io_read;
+ priv->io_write = gpio_nand_io_write;
priv->data_in = true;
}
@@ -348,8 +346,8 @@ static int ams_delta_init(struct platform_device *pdev)
return -ENODEV;
}
- /* Initialize the NAND controller object embedded in ams_delta_nand. */
- priv->base.ops = &ams_delta_ops;
+ /* Initialize the NAND controller object embedded in gpio_nand. */
+ priv->base.ops = &gpio_nand_ops;
nand_controller_init(&priv->base);
this->controller = &priv->base;
@@ -385,9 +383,9 @@ static int ams_delta_init(struct platform_device *pdev)
/*
* Clean up routine
*/
-static int ams_delta_cleanup(struct platform_device *pdev)
+static int gpio_nand_remove(struct platform_device *pdev)
{
- struct ams_delta_nand *priv = platform_get_drvdata(pdev);
+ struct gpio_nand *priv = platform_get_drvdata(pdev);
struct mtd_info *mtd = nand_to_mtd(&priv->nand_chip);
/* Apply write protection */
@@ -415,9 +413,9 @@ static const struct platform_device_id gpio_nand_plat_id_table[] = {
};
MODULE_DEVICE_TABLE(of, gpio_nand_plat_id_table);
-static struct platform_driver ams_delta_nand_driver = {
- .probe = ams_delta_init,
- .remove = ams_delta_cleanup,
+static struct platform_driver gpio_nand_driver = {
+ .probe = gpio_nand_probe,
+ .remove = gpio_nand_remove,
.id_table = gpio_nand_plat_id_table,
.driver = {
.name = "ams-delta-nand",
@@ -425,7 +423,7 @@ static struct platform_driver ams_delta_nand_driver = {
},
};
-module_platform_driver(ams_delta_nand_driver);
+module_platform_driver(gpio_nand_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
Another step in preparation for merging the driver with "gpio-nand". Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> --- drivers/mtd/nand/raw/ams-delta.c | 86 ++++++++++++++++---------------- 1 file changed, 42 insertions(+), 44 deletions(-)