[PATCH v2 4/7] media: platform: qcom/iris: introduce optional controller_rst_tbl

[Neil Armstrong]

Introduce an optional controller_rst_tbl use to store reset lines
used to reset part of the controller.

This is necessary for the vpu3 support, when the xo reset line
must be asserted separately from the other reset line
on power off operation.

Factor the iris_init_resets() logic to allow requesting
multiple reset tables.

Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
 drivers/media/platform/qcom/iris/iris_core.h       |  1 +
 .../platform/qcom/iris/iris_platform_common.h      |  2 ++
 drivers/media/platform/qcom/iris/iris_probe.c      | 39 +++++++++++++++-------
 3 files changed, 30 insertions(+), 12 deletions(-)

diff --git a/drivers/media/platform/qcom/iris/iris_core.h b/drivers/media/platform/qcom/iris/iris_core.h
index 37fb4919fecc62182784b4dca90fcab47dd38a80..78143855b277cd3ebdc7a1e7f35f6df284aa364c 100644
--- a/drivers/media/platform/qcom/iris/iris_core.h
+++ b/drivers/media/platform/qcom/iris/iris_core.h
@@ -82,6 +82,7 @@ struct iris_core {
 	struct clk_bulk_data			*clock_tbl;
 	u32					clk_count;
 	struct reset_control_bulk_data		*resets;
+	struct reset_control_bulk_data		*controller_resets;
 	const struct iris_platform_data		*iris_platform_data;
 	enum iris_core_state			state;
 	dma_addr_t				iface_q_table_daddr;
diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
index f6b15d2805fb2004699709bb12cd7ce9b052180c..fdd40fd80178c4c66b37e392d07a0a62f492f108 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_common.h
+++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
@@ -156,6 +156,8 @@ struct iris_platform_data {
 	unsigned int clk_tbl_size;
 	const char * const *clk_rst_tbl;
 	unsigned int clk_rst_tbl_size;
+	const char * const *controller_rst_tbl;
+	unsigned int controller_rst_tbl_size;
 	u64 dma_mask;
 	const char *fwname;
 	u32 pas_id;
diff --git a/drivers/media/platform/qcom/iris/iris_probe.c b/drivers/media/platform/qcom/iris/iris_probe.c
index aca442dcc153830e6252d1dca87afb38c0b9eb8f..4f8bce6e2002bffee4c93dcaaf6e52bf4e40992e 100644
--- a/drivers/media/platform/qcom/iris/iris_probe.c
+++ b/drivers/media/platform/qcom/iris/iris_probe.c
@@ -91,25 +91,40 @@ static int iris_init_clocks(struct iris_core *core)
 	return 0;
 }
 
-static int iris_init_resets(struct iris_core *core)
+static int iris_init_reset_table(struct iris_core *core,
+				 struct reset_control_bulk_data **resets,
+				 const char * const *rst_tbl, u32 rst_tbl_size)
 {
-	const char * const *rst_tbl;
-	u32 rst_tbl_size;
 	u32 i = 0;
 
-	rst_tbl = core->iris_platform_data->clk_rst_tbl;
-	rst_tbl_size = core->iris_platform_data->clk_rst_tbl_size;
-
-	core->resets = devm_kzalloc(core->dev,
-				    sizeof(*core->resets) * rst_tbl_size,
-				    GFP_KERNEL);
-	if (!core->resets)
+	*resets = devm_kzalloc(core->dev,
+			       sizeof(struct reset_control_bulk_data) * rst_tbl_size,
+			       GFP_KERNEL);
+	if (!*resets)
 		return -ENOMEM;
 
 	for (i = 0; i < rst_tbl_size; i++)
-		core->resets[i].id = rst_tbl[i];
+		(*resets)[i].id = rst_tbl[i];
+
+	return devm_reset_control_bulk_get_exclusive(core->dev, rst_tbl_size, *resets);
+}
+
+static int iris_init_resets(struct iris_core *core)
+{
+	int ret;
+
+	ret = iris_init_reset_table(core, &core->resets,
+				    core->iris_platform_data->clk_rst_tbl,
+				    core->iris_platform_data->clk_rst_tbl_size);
+	if (ret)
+		return ret;
+
+	if (!core->iris_platform_data->controller_rst_tbl_size)
+		return 0;
 
-	return devm_reset_control_bulk_get_exclusive(core->dev, rst_tbl_size, core->resets);
+	return iris_init_reset_table(core, &core->controller_resets,
+				     core->iris_platform_data->controller_rst_tbl,
+				     core->iris_platform_data->controller_rst_tbl_size);
 }
 
 static int iris_init_resources(struct iris_core *core)

-- 
2.34.1