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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: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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@ -47,6 +47,50 @@ int of_at91_get_clk_range(struct device_node *np, const char *propname,
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}
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EXPORT_SYMBOL_GPL(of_at91_get_clk_range);
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void pmc_data_free(struct pmc_data *pmc_data)
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{
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kfree(pmc_data->chws);
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kfree(pmc_data->shws);
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kfree(pmc_data->phws);
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kfree(pmc_data->ghws);
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}
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struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,
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unsigned int nperiph, unsigned int ngck)
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{
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struct pmc_data *pmc_data = kzalloc(sizeof(*pmc_data), GFP_KERNEL);
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if (!pmc_data)
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return NULL;
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pmc_data->ncore = ncore;
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pmc_data->chws = kcalloc(ncore, sizeof(struct clk_hw *), GFP_KERNEL);
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if (!pmc_data->chws)
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goto err;
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pmc_data->nsystem = nsystem;
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pmc_data->shws = kcalloc(nsystem, sizeof(struct clk_hw *), GFP_KERNEL);
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if (!pmc_data->shws)
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goto err;
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pmc_data->nperiph = nperiph;
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pmc_data->phws = kcalloc(nperiph, sizeof(struct clk_hw *), GFP_KERNEL);
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if (!pmc_data->phws)
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goto err;
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pmc_data->ngck = ngck;
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pmc_data->ghws = kcalloc(ngck, sizeof(struct clk_hw *), GFP_KERNEL);
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if (!pmc_data->ghws)
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goto err;
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return pmc_data;
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err:
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pmc_data_free(pmc_data);
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return NULL;
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}
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#ifdef CONFIG_PM
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static struct regmap *pmcreg;
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@ -19,6 +19,17 @@
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extern spinlock_t pmc_pcr_lock;
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struct pmc_data {
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unsigned int ncore;
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struct clk_hw **chws;
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unsigned int nsystem;
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struct clk_hw **shws;
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unsigned int nperiph;
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struct clk_hw **phws;
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unsigned int ngck;
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struct clk_hw **ghws;
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};
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struct clk_range {
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unsigned long min;
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unsigned long max;
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@ -69,6 +80,12 @@ extern const struct clk_programmable_layout at91rm9200_programmable_layout;
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extern const struct clk_programmable_layout at91sam9g45_programmable_layout;
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extern const struct clk_programmable_layout at91sam9x5_programmable_layout;
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#define ndck(a, s) (a[s - 1].id + 1)
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#define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1)
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struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,
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unsigned int nperiph, unsigned int ngck);
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void pmc_data_free(struct pmc_data *pmc_data);
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int of_at91_get_clk_range(struct device_node *np, const char *propname,
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struct clk_range *range);
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