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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Stephen Boyd <sboyd@kernel.org>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>,
	Michael Turquette <mturquette@baylibre.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH v2 07/22] clk: at91: add pmc_data struct and helpers
Date: Tue, 16 Oct 2018 16:21:45 +0200	[thread overview]
Message-ID: <20181016142200.19741-8-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20181016142200.19741-1-alexandre.belloni@bootlin.com>

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>
---
 drivers/clk/at91/pmc.c | 44 ++++++++++++++++++++++++++++++++++++++++++
 drivers/clk/at91/pmc.h | 17 ++++++++++++++++
 2 files changed, 61 insertions(+)

diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index 1fa27f4ea538..0f8b3add1b04 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -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;
 
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 3dc50267a458..672a79bda88c 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -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);
 
-- 
2.19.1


  parent reply	other threads:[~2018-10-16 14:24 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-16 14:21 [PATCH v2 00/22] clk: at91: Rework DT bindings Alexandre Belloni
2018-10-16 14:21 ` [PATCH v2 01/22] clk: at91: audio-pll: fix audio pmc type Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 02/22] clk: at91: generated: SSCs don't have a gclk Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 03/22] clk: at91: h32mx: separate registration from DT parsing Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 04/22] clk: at91: audio-pll: " Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 05/22] clk: at91: generated: set audio_pll_allowed in at91_clk_register_generated() Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 06/22] clk: at91: allow clock registration from C code Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` Alexandre Belloni [this message]
2018-10-17 17:49   ` [PATCH v2 07/22] clk: at91: add pmc_data struct and helpers Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 08/22] dt-bindings: clk: at91: Document new PMC binding Alexandre Belloni
2018-10-17 17:49   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 09/22] clk: at91: add new DT lookup function Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 10/22] clk: at91: add sama5d4 pmc driver Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 11/22] clk: at91: add sama5d2 PMC driver Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 12/22] clk: at91: add at91sam9260 " Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 13/22] clk: at91: add at91sam9x5 PMCs driver Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 14/22] clk: at91: add at91sam9rl PMC driver Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 15/22] clk: at91: move DT compatibility code to its own file Alexandre Belloni
2018-10-17 17:50   ` Stephen Boyd
2018-10-16 14:21 ` [PATCH v2 16/22] ARM: dts: at91: sama5d4: switch to new clock bindings Alexandre Belloni
2018-10-16 14:21 ` [PATCH v2 17/22] ARM: dts: at91: sama5d2: switch to new binding Alexandre Belloni
2018-10-16 14:21 ` [PATCH v2 18/22] ARM: dts: at91: at91sam9260: switch to new clock bindings Alexandre Belloni
2018-10-16 14:21 ` [PATCH v2 19/22] ARM: dts: at91: at91sam9261: " Alexandre Belloni
2018-10-16 14:21 ` [PATCH v2 20/22] ARM: dts: at91: at91sam9263: " Alexandre Belloni
2018-10-16 14:21 ` [PATCH v2 21/22] ARM: dts: at91: at91sam9x5: " Alexandre Belloni
2018-10-16 14:22 ` [PATCH v2 22/22] ARM: dts: at91: at91sam9rl: " Alexandre Belloni
2018-10-17 16:50 ` [PATCH v2 00/22] clk: at91: Rework DT bindings Stephen Boyd
2018-10-17 17:27   ` Alexandre Belloni

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