diff mbox series

[5/8] power: reset: at91-reset: add at91_reset_data

Message ID 20220405112724.2760905-6-claudiu.beznea@microchip.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series power: reset: at91-reset: add support for sama7g5 | expand

Commit Message

Claudiu Beznea April 5, 2022, 11:27 a.m. UTC 
Add struct at91_reset_data to keep per platform related information.
This is a prerequisite for adding reset_controller_dev support.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 drivers/power/reset/at91-reset.c | 33 +++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index 64def79d557a..0d721e27f545 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -59,6 +59,11 @@  struct at91_reset {
 	u32 ramc_lpr;
 };
 
+struct at91_reset_data {
+	u32 reset_args;
+	u32 n_device_reset;
+};
+
 /*
 * unless the SDRAM is cleanly shutdown before we hit the
 * reset register it can be left driving the data bus and
@@ -153,29 +158,34 @@  static const struct of_device_id at91_ramc_of_match[] = {
 	{ /* sentinel */ }
 };
 
+static const struct at91_reset_data sam9260 = {
+	.reset_args = AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST,
+};
+
+static const struct at91_reset_data samx7 = {
+	.reset_args = AT91_RSTC_KEY | AT91_RSTC_PROCRST,
+};
+
 static const struct of_device_id at91_reset_of_match[] = {
 	{
 		.compatible = "atmel,at91sam9260-rstc",
-		.data = (void *)(AT91_RSTC_KEY | AT91_RSTC_PERRST |
-				 AT91_RSTC_PROCRST),
+		.data = &sam9260,
 	},
 	{
 		.compatible = "atmel,at91sam9g45-rstc",
-		.data = (void *)(AT91_RSTC_KEY | AT91_RSTC_PERRST |
-				 AT91_RSTC_PROCRST)
+		.data = &sam9260,
 	},
 	{
 		.compatible = "atmel,sama5d3-rstc",
-		.data = (void *)(AT91_RSTC_KEY | AT91_RSTC_PERRST |
-				 AT91_RSTC_PROCRST)
+		.data = &sam9260,
 	},
 	{
 		.compatible = "atmel,samx7-rstc",
-		.data = (void *)(AT91_RSTC_KEY | AT91_RSTC_PROCRST)
+		.data = &samx7,
 	},
 	{
 		.compatible = "microchip,sam9x60-rstc",
-		.data = (void *)(AT91_RSTC_KEY | AT91_RSTC_PROCRST)
+		.data = &samx7,
 	},
 	{ /* sentinel */ }
 };
@@ -184,6 +194,7 @@  MODULE_DEVICE_TABLE(of, at91_reset_of_match);
 static int __init at91_reset_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *match;
+	const struct at91_reset_data *data;
 	struct at91_reset *reset;
 	struct device_node *np;
 	int ret, idx = 0;
@@ -213,9 +224,13 @@  static int __init at91_reset_probe(struct platform_device *pdev)
 	}
 
 	match = of_match_node(at91_reset_of_match, pdev->dev.of_node);
+	if (!match || !match->data)
+		return -ENODEV;
+
+	data = match->data;
 	reset->nb.notifier_call = at91_reset;
 	reset->nb.priority = 192;
-	reset->args = (u32)match->data;
+	reset->args = data->reset_args;
 
 	reset->sclk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(reset->sclk))