[PATCH v3 7/8] i2c: qcom-geni: Use common GENI resource initialization helper

[Praveen Talari]

The driver implements a custom resources_init() callback for clock
frequency validation and bandwidth vote programming. Neither operation is
required for resource initialization itself.

Move clock frequency validation to probe and program the ICC bandwidth vote
from qcom_geni_i2c_conf(), where the bus frequency is configured. This
allows the driver to use geni_se_resources_init() directly and removes the
I2C-specific resource initialization wrapper.

Reviewed-by: Mukesh Kumar Savaliya <mukesh.savaliya at oss.qualcomm.com>
Signed-off-by: Praveen Talari <praveen.talari at oss.qualcomm.com>
---
 drivers/i2c/busses/i2c-qcom-geni.c | 29 ++++++++++-------------------
 1 file changed, 10 insertions(+), 19 deletions(-)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index a6fe89d0934f..dbe344719b86 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -275,7 +275,9 @@ static int qcom_geni_i2c_conf(struct geni_se *se, unsigned long freq)
 	trace_geni_i2c_bus_setup(gi2c->se.dev, gi2c->clk_freq_out,
 				 itr->clk_div, itr->t_high_cnt,
 				 itr->t_low_cnt, itr->t_cycle_cnt);
-	return 0;
+
+	return geni_icc_set_bw_ab(&gi2c->se, GENI_DEFAULT_BW, GENI_DEFAULT_BW,
+				  Bps_to_icc(gi2c->clk_freq_out));
 }
 
 static void geni_i2c_err_misc(struct geni_i2c_dev *gi2c)
@@ -1167,22 +1169,6 @@ static int geni_i2c_init(struct geni_i2c_dev *gi2c)
 	return ret;
 }
 
-static int geni_i2c_resources_init(struct geni_se *se)
-{
-	struct geni_i2c_dev *gi2c = dev_get_drvdata(se->dev);
-	int ret;
-
-	ret = geni_se_resources_init(&gi2c->se);
-	if (ret)
-		return ret;
-
-	ret = geni_i2c_clk_map_idx(gi2c);
-	if (ret)
-		return ret;
-
-	return geni_icc_set_bw_ab(&gi2c->se, GENI_DEFAULT_BW, GENI_DEFAULT_BW,
-				  Bps_to_icc(gi2c->clk_freq_out));
-}
 
 static int geni_i2c_probe(struct platform_device *pdev)
 {
@@ -1251,6 +1237,11 @@ static int geni_i2c_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
+	ret = geni_i2c_clk_map_idx(gi2c);
+	if (ret)
+		return dev_err_probe(gi2c->se.dev, ret, "Invalid clk frequency %d Hz\n",
+				     gi2c->clk_freq_out);
+
 	ret = i2c_add_adapter(&gi2c->adap);
 	if (ret) {
 		release_gpi_dma(gi2c);
@@ -1353,7 +1344,7 @@ static const struct dev_pm_ops geni_i2c_pm_ops = {
 };
 
 static const struct geni_i2c_desc geni_i2c = {
-	.resources_init = geni_i2c_resources_init,
+	.resources_init = geni_se_resources_init,
 	.set_rate = qcom_geni_i2c_conf,
 	.power_on = geni_se_resources_activate,
 	.power_off = geni_se_resources_deactivate,
@@ -1362,7 +1353,7 @@ static const struct geni_i2c_desc geni_i2c = {
 static const struct geni_i2c_desc i2c_master_hub = {
 	.no_dma_support = true,
 	.tx_fifo_depth = 16,
-	.resources_init = geni_i2c_resources_init,
+	.resources_init = geni_se_resources_init,
 	.set_rate = qcom_geni_i2c_conf,
 	.power_on = geni_se_resources_activate,
 	.power_off = geni_se_resources_deactivate,

-- 
2.34.1