Merge branch 'clk-rs9' into clk-next

* clk-rs9:
  clk: rs9: Add support for 9FGV0841
  clk: rs9: Replace model check with bitshift from chip data
  clk: rs9: Limit check to vendor ID in VID register
  dt-bindings: clk: rs9: Add 9FGV0841

1 files changed, 20 insertions, 17 deletions

diff --git a/drivers/clk/clk-renesas-pcie.c b/drivers/clk/clk-renesas-pcie.c
index 6606aba253c5..53e21ac302e6 100644
--- a/drivers/clk/clk-renesas-pcie.c
+++ b/drivers/clk/clk-renesas-pcie.c
@@ -7,6 +7,7 @@
  * Currently supported:
  *   - 9FGV0241
  *   - 9FGV0441
+ *   - 9FGV0841
  *
  * Copyright (C) 2022 Marek Vasut <marex@denx.de>
  */
@@ -42,6 +43,7 @@
 #define RS9_REG_DID				0x6
 #define RS9_REG_BCP				0x7
 
+#define RS9_REG_VID_MASK			GENMASK(3, 0)
 #define RS9_REG_VID_IDT				0x01
 
 #define RS9_REG_DID_TYPE_FGV			(0x0 << RS9_REG_DID_TYPE_SHIFT)
@@ -49,16 +51,10 @@
 #define RS9_REG_DID_TYPE_DMV			(0x2 << RS9_REG_DID_TYPE_SHIFT)
 #define RS9_REG_DID_TYPE_SHIFT			0x6
 
-/* Supported Renesas 9-series models. */
-enum rs9_model {
-	RENESAS_9FGV0241,
-	RENESAS_9FGV0441,
-};
-
 /* Structure to describe features of a particular 9-series model */
 struct rs9_chip_info {
-	const enum rs9_model	model;
 	unsigned int		num_clks;
+	u8			outshift;
 	u8			did;
 };
 
@@ -160,14 +156,12 @@ static const struct regmap_config rs9_regmap_config = {
 
 static u8 rs9_calc_dif(const struct rs9_driver_data *rs9, int idx)
 {
-	enum rs9_model model = rs9->chip_info->model;
-
-	if (model == RENESAS_9FGV0241)
-		return BIT(idx + 1);
-	else if (model == RENESAS_9FGV0441)
-		return BIT(idx);
-
-	return 0;
+	/*
+	 * On 9FGV0241, the DIF OE0 is BIT(1) and DIF OE(1) is BIT(2),
+	 * on 9FGV0441 and 9FGV0841 the DIF OE0 is BIT(0) and so on.
+	 * Increment the index in the 9FGV0241 special case here.
+	 */
+	return BIT(idx + rs9->chip_info->outshift);
 }
 
 static int rs9_get_output_config(struct rs9_driver_data *rs9, int idx)
@@ -333,6 +327,7 @@ static int rs9_probe(struct i2c_client *client)
 	if (ret < 0)
 		return ret;
 
+	vid &= RS9_REG_VID_MASK;
 	if (vid != RS9_REG_VID_IDT || did != rs9->chip_info->did)
 		return dev_err_probe(&client->dev, -ENODEV,
 				     "Incorrect VID/DID: %#02x, %#02x. Expected %#02x, %#02x\n",
@@ -380,20 +375,27 @@ static int __maybe_unused rs9_resume(struct device *dev)
 }
 
 static const struct rs9_chip_info renesas_9fgv0241_info = {
-	.model		= RENESAS_9FGV0241,
 	.num_clks	= 2,
+	.outshift	= 1,
 	.did		= RS9_REG_DID_TYPE_FGV | 0x02,
 };
 
 static const struct rs9_chip_info renesas_9fgv0441_info = {
-	.model		= RENESAS_9FGV0441,
 	.num_clks	= 4,
+	.outshift	= 0,
 	.did		= RS9_REG_DID_TYPE_FGV | 0x04,
 };
 
+static const struct rs9_chip_info renesas_9fgv0841_info = {
+	.num_clks	= 8,
+	.outshift	= 0,
+	.did		= RS9_REG_DID_TYPE_FGV | 0x08,
+};
+
 static const struct i2c_device_id rs9_id[] = {
 	{ "9fgv0241", .driver_data = (kernel_ulong_t)&renesas_9fgv0241_info },
 	{ "9fgv0441", .driver_data = (kernel_ulong_t)&renesas_9fgv0441_info },
+	{ "9fgv0841", .driver_data = (kernel_ulong_t)&renesas_9fgv0841_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, rs9_id);
@@ -401,6 +403,7 @@ MODULE_DEVICE_TABLE(i2c, rs9_id);
 static const struct of_device_id clk_rs9_of_match[] = {
 	{ .compatible = "renesas,9fgv0241", .data = &renesas_9fgv0241_info },
 	{ .compatible = "renesas,9fgv0441", .data = &renesas_9fgv0441_info },
+	{ .compatible = "renesas,9fgv0841", .data = &renesas_9fgv0841_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, clk_rs9_of_match);