mtd: rawnand: ams-delta: Stop implementing ->select_chip()

Now that the CS to be selected is passed in nand_operation->cs, we can
get rid of the ->select_chip() implementation and replace it by an
internal function which is called from the chip->exec_op() hook.
Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com>
Tested-by: NJanusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/ams-delta.c

@@ -116,14 +116,9 @@ static void ams_delta_read_buf(struct ams_delta_nand *priv, u8 *buf, int len)
 		buf[i] = ams_delta_io_read(priv);
 }
 
-static void ams_delta_select_chip(struct nand_chip *this, int n)
+static void ams_delta_ctrl_cs(struct ams_delta_nand *priv, bool assert)
 {
-	struct ams_delta_nand *priv = nand_get_controller_data(this);
-
-	if (n > 0)
-		return;
-
-	gpiod_set_value(priv->gpiod_nce, n < 0);
+	gpiod_set_value(priv->gpiod_nce, assert ? 0 : 1);
 }
 
 static int ams_delta_exec_op(struct nand_chip *this,
@@ -136,6 +131,8 @@ static int ams_delta_exec_op(struct nand_chip *this,
 	if (check_only)
 		return 0;
 
+	ams_delta_ctrl_cs(priv, 1);
+
 	for (instr = op->instrs; instr < op->instrs + op->ninstrs; instr++) {
 		switch (instr->type) {
 		case NAND_OP_CMD_INSTR:
@@ -174,6 +171,8 @@ static int ams_delta_exec_op(struct nand_chip *this,
 			break;
 	}
 
+	ams_delta_ctrl_cs(priv, 0);
+
 	return ret;
 }
 
@@ -217,7 +216,6 @@ static int ams_delta_init(struct platform_device *pdev)
 	priv->io_base = io_base;
 	nand_set_controller_data(this, priv);
 
-	this->select_chip = ams_delta_select_chip;
 	this->exec_op = ams_delta_exec_op;
 
 	priv->gpiod_rdy = devm_gpiod_get_optional(&pdev->dev, "rdy", GPIOD_IN);