[PATCH v10 4/8] platform/x86: int3472: tps68470: add static clock consumer support

[Thierry Chatard]

On some platforms a sensor's ACPI _DEP does not list the INT3472 device,
so for_each_acpi_consumer_dev() misses that sensor and never registers its
tps68470-clk consumer entry, leaving the sensor without its MCLK.

Add optional n_clk_consumers/clk_consumers fields to the board data. When
set, probe builds the tps68470-clk platform data from that static list
instead of walking the ACPI consumers. Boards that leave the fields unset
keep using the existing ACPI traversal.

Assisted-by: Claude Code:claude-opus-4-8
Signed-off-by: Thierry Chatard <tchatard@xxxxxxxxx>
---
 drivers/platform/x86/intel/int3472/tps68470.c | 19 ++++++++++++++++---
 drivers/platform/x86/intel/int3472/tps68470.h |  8 ++++++++
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c
index 35fa77eb3..df0f5f962 100644
--- a/drivers/platform/x86/intel/int3472/tps68470.c
+++ b/drivers/platform/x86/intel/int3472/tps68470.c
@@ -190,9 +190,22 @@ static int skl_int3472_tps68470_probe(struct i2c_client *client)
 		return dev_err_probe(dev, -ENODATA,
 				     "No board-data found for this model\n");
 
-	n_consumers = skl_int3472_fill_clk_pdata(dev, &clk_pdata);
-	if (n_consumers < 0)
-		return n_consumers;
+	if (board_data->n_clk_consumers) {
+		clk_pdata = devm_kzalloc(dev,
+					 struct_size(clk_pdata, consumers,
+						     board_data->n_clk_consumers),
+					 GFP_KERNEL);
+		if (!clk_pdata)
+			return -ENOMEM;
+		clk_pdata->n_consumers = board_data->n_clk_consumers;
+		for (i = 0; i < board_data->n_clk_consumers; i++)
+			clk_pdata->consumers[i] = board_data->clk_consumers[i];
+		n_consumers = board_data->n_clk_consumers;
+	} else {
+		n_consumers = skl_int3472_fill_clk_pdata(dev, &clk_pdata);
+		if (n_consumers < 0)
+			return n_consumers;
+	}
 
 	cells = kzalloc_objs(*cells, TPS68470_WIN_MFD_CELL_COUNT);
 	if (!cells)
diff --git a/drivers/platform/x86/intel/int3472/tps68470.h b/drivers/platform/x86/intel/int3472/tps68470.h
index 3bbaade96..68303e6fa 100644
--- a/drivers/platform/x86/intel/int3472/tps68470.h
+++ b/drivers/platform/x86/intel/int3472/tps68470.h
@@ -12,12 +12,20 @@
 #define _INTEL_SKL_INT3472_TPS68470_H
 
 struct gpiod_lookup_table;
+
+struct tps68470_clk_consumer;
 struct tps68470_regulator_platform_data;
 
 struct int3472_tps68470_board_data {
 	const char *dev_name;
 	const struct tps68470_regulator_platform_data *tps68470_regulator_pdata;
 	const struct software_node *tps68470_gpio_swnode;
+	/*
+	 * Optional static clock consumers, used in place of the ACPI _DEP
+	 * traversal on platforms where a sensor's _DEP omits the INT3472.
+	 */
+	unsigned int n_clk_consumers;
+	const struct tps68470_clk_consumer *clk_consumers;
 	unsigned int n_gpiod_lookups;
 	struct gpiod_lookup_table *tps68470_gpio_lookup_tables[];
 };
-- 
2.53.0