[PATCH V2 05/21] clk: tegra: dfll: registration for multiple SoCs

[Joseph Lo <josephl@xxxxxxxxxx>]

From: Peter De Schrijver <pdeschrijver@xxxxxxxxxx>

In a future patch, support for the DFLL in Tegra210 will be introduced.
This requires support for more than 1 set of CVB and CPU max frequency
tables.

Signed-off-by: Peter De Schrijver <pdeschrijver@xxxxxxxxxx>
Signed-off-by: Joseph Lo <josephl@xxxxxxxxxx>
Acked-by: Jon Hunter <jonathanh@xxxxxxxxxx>
---
*V2:
 - add ack tag
---
 drivers/clk/tegra/clk-tegra124-dfll-fcpu.c | 45 ++++++++++++++++------
 1 file changed, 34 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
index 269d3595758b..1a2cc113e5c8 100644
--- a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
+++ b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
@@ -1,7 +1,7 @@
 /*
  * Tegra124 DFLL FCPU clock source driver
  *
- * Copyright (C) 2012-2014 NVIDIA Corporation.  All rights reserved.
+ * Copyright (C) 2012-2018 NVIDIA Corporation.  All rights reserved.
  *
  * Aleksandr Frid <afrid@xxxxxxxxxx>
  * Paul Walmsley <pwalmsley@xxxxxxxxxx>
@@ -21,6 +21,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <soc/tegra/fuse.h>
 
@@ -28,8 +29,15 @@
 #include "clk-dfll.h"
 #include "cvb.h"
 
+struct dfll_fcpu_data {
+	const unsigned long *cpu_max_freq_table;
+	unsigned int cpu_max_freq_table_size;
+	const struct cvb_table *cpu_cvb_tables;
+	unsigned int cpu_cvb_tables_size;
+};
+
 /* Maximum CPU frequency, indexed by CPU speedo id */
-static const unsigned long cpu_max_freq_table[] = {
+static const unsigned long tegra124_cpu_max_freq_table[] = {
 	[0] = 2014500000UL,
 	[1] = 2320500000UL,
 	[2] = 2116500000UL,
@@ -82,16 +90,36 @@ static const struct cvb_table tegra124_cpu_cvb_tables[] = {
 	},
 };
 
+static const struct dfll_fcpu_data tegra124_dfll_fcpu_data = {
+	.cpu_max_freq_table = tegra124_cpu_max_freq_table,
+	.cpu_max_freq_table_size = ARRAY_SIZE(tegra124_cpu_max_freq_table),
+	.cpu_cvb_tables = tegra124_cpu_cvb_tables,
+	.cpu_cvb_tables_size = ARRAY_SIZE(tegra124_cpu_cvb_tables)
+};
+
+static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
+	{
+		.compatible = "nvidia,tegra124-dfll",
+		.data = &tegra124_dfll_fcpu_data,
+	},
+	{ },
+};
+
 static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 {
 	int process_id, speedo_id, speedo_value, err;
 	struct tegra_dfll_soc_data *soc;
+	const struct dfll_fcpu_data *fcpu_data;
+
+	fcpu_data = of_device_get_match_data(&pdev->dev);
+	if (!fcpu_data)
+		return -ENODEV;
 
 	process_id = tegra_sku_info.cpu_process_id;
 	speedo_id = tegra_sku_info.cpu_speedo_id;
 	speedo_value = tegra_sku_info.cpu_speedo_value;
 
-	if (speedo_id >= ARRAY_SIZE(cpu_max_freq_table)) {
+	if (speedo_id >= fcpu_data->cpu_max_freq_table_size) {
 		dev_err(&pdev->dev, "unknown max CPU freq for speedo_id=%d\n",
 			speedo_id);
 		return -ENODEV;
@@ -107,10 +135,10 @@ static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	soc->max_freq = cpu_max_freq_table[speedo_id];
+	soc->max_freq = fcpu_data->cpu_max_freq_table[speedo_id];
 
-	soc->cvb = tegra_cvb_add_opp_table(soc->dev, tegra124_cpu_cvb_tables,
-					   ARRAY_SIZE(tegra124_cpu_cvb_tables),
+	soc->cvb = tegra_cvb_add_opp_table(soc->dev, fcpu_data->cpu_cvb_tables,
+					   fcpu_data->cpu_cvb_tables_size,
 					   process_id, speedo_id, speedo_value,
 					   soc->max_freq);
 	if (IS_ERR(soc->cvb)) {
@@ -142,11 +170,6 @@ static int tegra124_dfll_fcpu_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id tegra124_dfll_fcpu_of_match[] = {
-	{ .compatible = "nvidia,tegra124-dfll", },
-	{ },
-};
-
 static const struct dev_pm_ops tegra124_dfll_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra_dfll_runtime_suspend,
 			   tegra_dfll_runtime_resume, NULL)
-- 
2.19.2