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Commit b00cd8e4 authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Stephen Boyd
Browse files

clk: at91: add pmc_data struct and helpers 



Add a new strut to handle references to all the PMC clocks and implement
allocation/free helpers.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent b2e39dc0

drivers/clk/at91/pmc.c

+44 −0
Original line number Diff line number Diff line
@@ -47,6 +47,50 @@ int of_at91_get_clk_range(struct device_node *np, const char *propname, 
}

EXPORT_SYMBOL_GPL(of_at91_get_clk_range);



void pmc_data_free(struct pmc_data *pmc_data)

{

	kfree(pmc_data->chws);

	kfree(pmc_data->shws);

	kfree(pmc_data->phws);

	kfree(pmc_data->ghws);

}



struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,

				   unsigned int nperiph, unsigned int ngck)

{

	struct pmc_data *pmc_data = kzalloc(sizeof(*pmc_data), GFP_KERNEL);



	if (!pmc_data)

		return NULL;



	pmc_data->ncore = ncore;

	pmc_data->chws = kcalloc(ncore, sizeof(struct clk_hw *), GFP_KERNEL);

	if (!pmc_data->chws)

		goto err;



	pmc_data->nsystem = nsystem;

	pmc_data->shws = kcalloc(nsystem, sizeof(struct clk_hw *), GFP_KERNEL);

	if (!pmc_data->shws)

		goto err;



	pmc_data->nperiph = nperiph;

	pmc_data->phws = kcalloc(nperiph, sizeof(struct clk_hw *), GFP_KERNEL);

	if (!pmc_data->phws)

		goto err;



	pmc_data->ngck = ngck;

	pmc_data->ghws = kcalloc(ngck, sizeof(struct clk_hw *), GFP_KERNEL);

	if (!pmc_data->ghws)

		goto err;



	return pmc_data;



err:

	pmc_data_free(pmc_data);



	return NULL;

}



#ifdef CONFIG_PM

static struct regmap *pmcreg;

drivers/clk/at91/pmc.h

+17 −0
Original line number Diff line number Diff line
@@ -19,6 +19,17 @@ 


extern spinlock_t pmc_pcr_lock;



struct pmc_data {

	unsigned int ncore;

	struct clk_hw **chws;

	unsigned int nsystem;

	struct clk_hw **shws;

	unsigned int nperiph;

	struct clk_hw **phws;

	unsigned int ngck;

	struct clk_hw **ghws;

};



struct clk_range {

	unsigned long min;

	unsigned long max;
@@ -69,6 +80,12 @@ extern const struct clk_programmable_layout at91rm9200_programmable_layout; 
extern const struct clk_programmable_layout at91sam9g45_programmable_layout;

extern const struct clk_programmable_layout at91sam9x5_programmable_layout;



#define ndck(a, s) (a[s - 1].id + 1)

#define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1)

struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,

				   unsigned int nperiph, unsigned int ngck);

void pmc_data_free(struct pmc_data *pmc_data);



int of_at91_get_clk_range(struct device_node *np, const char *propname,

			  struct clk_range *range);