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@xxxxxxxxxxx>
---
drivers/clk/at91/pmc.c | 34 ++++++++++++++++++++++++++++++++
include/dt-bindings/clock/at91.h | 14 +++++++++++++
2 files changed, 48 insertions(+)
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index 0f8b3add1b04..f5697092ec52 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 ERR_PTR(-EINVAL);
+ return pmc_data->chws[idx];
+ case PMC_TYPE_SYSTEM:
+ if (idx >= pmc_data->nsystem)
+ return ERR_PTR(-EINVAL);
+ return pmc_data->shws[idx];
+ case PMC_TYPE_PERIPHERAL:
+ if (idx >= pmc_data->nperiph)
+ return ERR_PTR(-EINVAL);
+ return pmc_data->phws[idx];
+ case PMC_TYPE_GCK:
+ if (idx >= pmc_data->ngck)
+ return ERR_PTR(-EINVAL);
+ return pmc_data->ghws[idx];
+ 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);
diff --git a/include/dt-bindings/clock/at91.h b/include/dt-bindings/clock/at91.h
index ab3ee241d10c..c007adcb5512 100644
--- a/include/dt-bindings/clock/at91.h
+++ b/include/dt-bindings/clock/at91.h
@@ -9,6 +9,19 @@
#ifndef _DT_BINDINGS_CLK_AT91_H
#define _DT_BINDINGS_CLK_AT91_H
+#define PMC_TYPE_CORE 0
+#define PMC_TYPE_SYSTEM 1
+#define PMC_TYPE_PERIPHERAL 2
+#define PMC_TYPE_GCK 3
+
+#define PMC_MCK 0
+#define PMC_UTMI 1
+#define PMC_MCK2 2
+#define PMC_MAIN 3
+#define PMC_I2S0_MUX 4
+#define PMC_I2S1_MUX 5
+
+#ifndef AT91_PMC_MOSCS
#define AT91_PMC_MOSCS 0 /* MOSCS Flag */
#define AT91_PMC_LOCKA 1 /* PLLA Lock */
#define AT91_PMC_LOCKB 2 /* PLLB Lock */
@@ -19,5 +32,6 @@
#define AT91_PMC_MOSCRCS 17 /* Main On-Chip RC */
#define AT91_PMC_CFDEV 18 /* Clock Failure Detector Event */
#define AT91_PMC_GCKRDY 24 /* Generated Clocks */
+#endif
#endif
--
2.18.0
--
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