From d387ff5427be6b93e11986c6ab6d7a8e6031e976 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Tue, 16 Oct 2018 16:21:47 +0200
Subject: clk: at91: add new DT lookup function
Add a new DT lookup function to lookup for PMC clocks.
Note that the #ifndef AT91_PMC_MOSCS section will be removed once all the
platforms are converted.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
drivers/clk/at91/pmc.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
(limited to 'drivers/clk/at91/pmc.c')
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index 0f8b3add1b04..db24539d5740 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -19,6 +19,8 @@
#include <asm/proc-fns.h>
+#include <dt-bindings/clock/at91.h>
+
#include "pmc.h"
#define PMC_MAX_IDS 128
@@ -47,6 +49,38 @@ int of_at91_get_clk_range(struct device_node *np, const char *propname,
}
EXPORT_SYMBOL_GPL(of_at91_get_clk_range);
+struct clk_hw *of_clk_hw_pmc_get(struct of_phandle_args *clkspec, void *data)
+{
+ unsigned int type = clkspec->args[0];
+ unsigned int idx = clkspec->args[1];
+ struct pmc_data *pmc_data = data;
+
+ switch (type) {
+ case PMC_TYPE_CORE:
+ if (idx < pmc_data->ncore)
+ return pmc_data->chws[idx];
+ break;
+ case PMC_TYPE_SYSTEM:
+ if (idx < pmc_data->nsystem)
+ return pmc_data->shws[idx];
+ break;
+ case PMC_TYPE_PERIPHERAL:
+ if (idx < pmc_data->nperiph)
+ return pmc_data->phws[idx];
+ break;
+ case PMC_TYPE_GCK:
+ if (idx < pmc_data->ngck)
+ return pmc_data->ghws[idx];
+ break;
+ default:
+ break;
+ }
+
+ pr_err("%s: invalid type (%u) or index (%u)\n", __func__, type, idx);
+
+ return ERR_PTR(-EINVAL);
+}
+
void pmc_data_free(struct pmc_data *pmc_data)
{
kfree(pmc_data->chws);
--
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