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From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Jason Cooper <jason@lakedaemon.net>,
	Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH 25/35] ARM: davinci: cp-intc: use the new-style config structure
Date: Thu, 31 Jan 2019 14:39:18 +0100	[thread overview]
Message-ID: <20190131133928.17985-26-brgl@bgdev.pl> (raw)
In-Reply-To: <20190131133928.17985-1-brgl@bgdev.pl>

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Modify the cp-intc driver to take all its configuration from the new
config structure. Stop referencing davinci_soc_info in any way.
Move the declaration for davinci_cp_intc_init() to
irq-davinci-cp-intc.h and make it take the new config structure as
parameter. Convert all users to the new version.

Also: since the two da8xx SoCs default all irq priorities to 7, just
drop the priority configuration at all and hardcode the channels to 7.

It will simplify the driver code and make our lives easier when it
comes to device-tree support.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 arch/arm/mach-davinci/cp_intc.c             | 92 +++++++++------------
 arch/arm/mach-davinci/da830.c               |  2 +-
 arch/arm/mach-davinci/da850.c               |  2 +-
 arch/arm/mach-davinci/include/mach/common.h |  1 -
 include/linux/irqchip/irq-davinci-cp-intc.h |  2 +
 5 files changed, 44 insertions(+), 55 deletions(-)

diff --git a/arch/arm/mach-davinci/cp_intc.c b/arch/arm/mach-davinci/cp_intc.c
index 1f55d68672db..2ce0b7653c88 100644
--- a/arch/arm/mach-davinci/cp_intc.c
+++ b/arch/arm/mach-davinci/cp_intc.c
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/irqchip.h>
+#include <linux/irqchip/irq-davinci-cp-intc.h>
 #include <linux/irqdomain.h>
 #include <linux/io.h>
 #include <linux/of.h>
@@ -144,22 +145,15 @@ static const struct irq_domain_ops davinci_cp_intc_irq_domain_ops = {
 	.xlate = irq_domain_xlate_onetwocell,
 };
 
-static int __init davinci_cp_intc_of_init(struct device_node *node,
-					  struct device_node *parent)
+static int __init
+davinci_cp_intc_do_init(const struct davinci_cp_intc_config *config,
+			struct device_node *node)
 {
-	u32 num_irq		= davinci_soc_info.intc_irq_num;
-	u8 *irq_prio		= davinci_soc_info.intc_irq_prios;
-	unsigned num_reg	= BITS_TO_LONGS(num_irq);
-	int i, irq_base;
-
-	if (node) {
-		davinci_cp_intc_base = of_iomap(node, 0);
-		if (of_property_read_u32(node, "ti,intc-size", &num_irq))
-			pr_warn("unable to get intc-size, default to %d\n",
-				num_irq);
-	} else {
-		davinci_cp_intc_base = ioremap(davinci_soc_info.intc_base, SZ_8K);
-	}
+	unsigned int num_regs = BITS_TO_LONGS(config->num_irqs);
+	int offset, irq_base;
+
+	davinci_cp_intc_base = ioremap(config->reg.start,
+				       resource_size(&config->reg));
 	if (WARN_ON(!davinci_cp_intc_base))
 		return -EINVAL;
 
@@ -169,51 +163,29 @@ static int __init davinci_cp_intc_of_init(struct device_node *node,
 	davinci_cp_intc_write(0, DAVINCI_CP_INTC_HOST_ENABLE(0));
 
 	/* Disable system interrupts */
-	for (i = 0; i < num_reg; i++)
-		davinci_cp_intc_write(~0, DAVINCI_CP_INTC_SYS_ENABLE_CLR(i));
+	for (offset = 0; offset < num_regs; offset++)
+		davinci_cp_intc_write(~0,
+			DAVINCI_CP_INTC_SYS_ENABLE_CLR(offset));
 
 	/* Set to normal mode, no nesting, no priority hold */
 	davinci_cp_intc_write(0, DAVINCI_CP_INTC_CTRL);
 	davinci_cp_intc_write(0, DAVINCI_CP_INTC_HOST_CTRL);
 
 	/* Clear system interrupt status */
-	for (i = 0; i < num_reg; i++)
-		davinci_cp_intc_write(~0, DAVINCI_CP_INTC_SYS_STAT_CLR(i));
+	for (offset = 0; offset < num_regs; offset++)
+		davinci_cp_intc_write(~0,
+			DAVINCI_CP_INTC_SYS_STAT_CLR(offset));
 
 	/* Enable nIRQ (what about nFIQ?) */
 	davinci_cp_intc_write(1, DAVINCI_CP_INTC_HOST_ENABLE_IDX_SET);
 
-	/*
-	 * Priority is determined by host channel: lower channel number has
-	 * higher priority i.e. channel 0 has highest priority and channel 31
-	 * had the lowest priority.
-	 */
-	num_reg = (num_irq + 3) >> 2;	/* 4 channels per register */
-	if (irq_prio) {
-		unsigned j, k;
-		u32 val;
-
-		for (k = i = 0; i < num_reg; i++) {
-			for (val = j = 0; j < 4; j++, k++) {
-				val >>= 8;
-				if (k < num_irq)
-					val |= irq_prio[k] << 24;
-			}
-
-			davinci_cp_intc_write(val, DAVINCI_CP_INTC_CHAN_MAP(i));
-		}
-	} else	{
-		/*
-		 * Default everything to channel 15 if priority not specified.
-		 * Note that channel 0-1 are mapped to nFIQ and channels 2-31
-		 * are mapped to nIRQ.
-		 */
-		for (i = 0; i < num_reg; i++)
-			davinci_cp_intc_write(0x0f0f0f0f,
-					      DAVINCI_CP_INTC_CHAN_MAP(i));
-	}
+	/* Default all priorities to channel 7. */
+	num_regs = (config->num_irqs + 3) >> 2;	/* 4 channels per register */
+	for (offset = 0; offset < num_regs; offset++)
+		davinci_cp_intc_write(0x07070707,
+			DAVINCI_CP_INTC_CHAN_MAP(offset));
 
-	irq_base = irq_alloc_descs(-1, 0, num_irq, 0);
+	irq_base = irq_alloc_descs(-1, 0, config->num_irqs, 0);
 	if (irq_base < 0) {
 		pr_warn("Couldn't allocate IRQ numbers\n");
 		irq_base = 0;
@@ -221,7 +193,7 @@ static int __init davinci_cp_intc_of_init(struct device_node *node,
 
 	/* create a legacy host */
 	davinci_cp_intc_irq_domain = irq_domain_add_legacy(
-					node, num_irq, irq_base, 0,
+					node, config->num_irqs, irq_base, 0,
 					&davinci_cp_intc_irq_domain_ops, NULL);
 
 	if (!davinci_cp_intc_irq_domain) {
@@ -237,9 +209,25 @@ static int __init davinci_cp_intc_of_init(struct device_node *node,
 	return 0;
 }
 
-void __init davinci_cp_intc_init(void)
+int __init davinci_cp_intc_init(const struct davinci_cp_intc_config *config)
 {
-	davinci_cp_intc_of_init(NULL, NULL);
+	return davinci_cp_intc_do_init(config, NULL);
 }
 
+static int __init davinci_cp_intc_of_init(struct device_node *node,
+					  struct device_node *parent)
+{
+	struct davinci_cp_intc_config config = { };
+	int rv;
+
+	rv = of_address_to_resource(node, 0, &config.reg);
+	if (WARN_ON(rv))
+		return rv;
+
+	rv = of_property_read_u32(node, "ti,intc-size", &config.num_irqs);
+	if (WARN_ON(rv))
+		return rv;
+
+	return davinci_cp_intc_do_init(&config, node);
+}
 IRQCHIP_DECLARE(cp_intc, "ti,cp-intc", davinci_cp_intc_of_init);
diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
index 565c306e5252..bdbd66ffd2ea 100644
--- a/arch/arm/mach-davinci/da830.c
+++ b/arch/arm/mach-davinci/da830.c
@@ -754,7 +754,7 @@ static const struct davinci_cp_intc_config da830_cp_intc_config = {
 
 void __init da830_init_irqs(void)
 {
-	davinci_cp_intc_init();
+	davinci_cp_intc_init(&da830_cp_intc_config);
 }
 
 void __init da830_init_time(void)
diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 794ddbe78534..fe370e85aeb1 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -683,7 +683,7 @@ static const struct davinci_cp_intc_config da850_cp_intc_config = {
 
 void __init da850_init_irqs(void)
 {
-	davinci_cp_intc_init();
+	davinci_cp_intc_init(&da850_cp_intc_config);
 }
 
 void __init da850_init_time(void)
diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h
index 0a6607ea4560..9e06974c85bb 100644
--- a/arch/arm/mach-davinci/include/mach/common.h
+++ b/arch/arm/mach-davinci/include/mach/common.h
@@ -17,7 +17,6 @@
 #include <linux/types.h>
 #include <linux/reboot.h>
 
-void davinci_cp_intc_init(void);
 void davinci_timer_init(struct clk *clk);
 
 struct davinci_timer_instance {
diff --git a/include/linux/irqchip/irq-davinci-cp-intc.h b/include/linux/irqchip/irq-davinci-cp-intc.h
index 9b0c7d6189eb..596145c2f3d1 100644
--- a/include/linux/irqchip/irq-davinci-cp-intc.h
+++ b/include/linux/irqchip/irq-davinci-cp-intc.h
@@ -13,4 +13,6 @@ struct davinci_cp_intc_config {
 	unsigned int num_irqs;
 };
 
+int davinci_cp_intc_init(const struct davinci_cp_intc_config *config);
+
 #endif /* _LINUX_IRQ_DAVINCI_CP_INTC_ */
-- 
2.20.1


  parent reply	other threads:[~2019-01-31 13:41 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-31 13:38 [PATCH 00/35] ARM: davinci: modernize the irq support Bartosz Golaszewski
2019-01-31 13:38 ` [PATCH 01/35] ARM: davinci: remove intc_host_map from davinci_soc_info struct Bartosz Golaszewski
2019-02-04 21:50   ` David Lechner
2019-02-06  8:32   ` Sekhar Nori
2019-01-31 13:38 ` [PATCH 02/35] ARM: davinci: select GENERIC_IRQ_MULTI_HANDLER Bartosz Golaszewski
2019-02-04 22:02   ` David Lechner
2019-02-06 12:39   ` Sekhar Nori
2019-02-07 15:49     ` Bartosz Golaszewski
2019-02-08  8:59       ` Sekhar Nori
2019-01-31 13:38 ` [PATCH 03/35] ARM: davinci: remove davinci_intc_type Bartosz Golaszewski
2019-02-04 22:04   ` David Lechner
2019-01-31 13:38 ` [PATCH 04/35] ARM: davinci: pull davinci_intc_base into the respective intc drivers Bartosz Golaszewski
2019-02-04 22:06   ` David Lechner
2019-01-31 13:38 ` [PATCH 05/35] ARM: davinci: drop irq defines from default_priorites Bartosz Golaszewski
2019-02-04 22:21   ` David Lechner
2019-02-06 13:03     ` Sekhar Nori
2019-02-06 13:32       ` Bartosz Golaszewski
2019-02-06 14:50         ` Sekhar Nori
2019-02-05  0:20   ` David Lechner
2019-02-05 16:16     ` Bartosz Golaszewski
2019-01-31 13:38 ` [PATCH 06/35] ARM: davinci: wrap interrupt definitions with a macro for SPARSE_IRQ Bartosz Golaszewski
2019-02-04 22:32   ` David Lechner
2019-02-05 16:17     ` Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 07/35] ARM: davinci: aintc: use irq domain Bartosz Golaszewski
2019-02-04 22:42   ` David Lechner
2019-02-05 16:29     ` Bartosz Golaszewski
2019-02-06 15:08   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 08/35] ARM: davinci: select SPARSE_IRQ Bartosz Golaszewski
2019-02-04 22:46   ` David Lechner
2019-01-31 13:39 ` [PATCH 09/35] ARM: davinci: aintc: drop GPL license boilerplate Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 10/35] ARM: davinci: aintc: wrap davinci_irq_init() with a helper Bartosz Golaszewski
2019-02-04 22:51   ` David Lechner
2019-01-31 13:39 ` [PATCH 11/35] ARM: davinci: aintc: use a common prefix for symbols in the driver Bartosz Golaszewski
2019-02-04 22:54   ` David Lechner
2019-01-31 13:39 ` [PATCH 12/35] ARM: davinci: aintc: drop the 00 prefix from register offsets Bartosz Golaszewski
2019-02-04 22:56   ` David Lechner
2019-01-31 13:39 ` [PATCH 13/35] ARM: davinci: aintc: add a new config structure Bartosz Golaszewski
2019-02-04 23:02   ` David Lechner
2019-02-07 13:33   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 14/35] ARM: davinci: aintc: use the new irqchip config structure in dm* SoCs Bartosz Golaszewski
2019-02-04 23:09   ` David Lechner
2019-01-31 13:39 ` [PATCH 15/35] ARM: davinci: aintc: use the new config structure Bartosz Golaszewski
2019-02-04 23:29   ` David Lechner
2019-01-31 13:39 ` [PATCH 16/35] ARM: davinci: aintc: move timer-specific irq_set_handler() out of irq.c Bartosz Golaszewski
2019-02-04 23:36   ` David Lechner
2019-02-07 12:21   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 17/35] ARM: davinci: aintc: remove unnecessary includes Bartosz Golaszewski
2019-02-04 23:37   ` David Lechner
2019-01-31 13:39 ` [PATCH 18/35] irqchip: davinci-aintc: move the driver to drivers/irqchip Bartosz Golaszewski
2019-02-04 23:43   ` David Lechner
2019-02-08 16:03     ` Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 19/35] ARM: davinci: cp-intc: remove cp_intc.h Bartosz Golaszewski
2019-02-04 23:48   ` David Lechner
2019-01-31 13:39 ` [PATCH 20/35] ARM: davinci: cp-intc: add a wrapper around cp_intc_init() Bartosz Golaszewski
2019-02-04 23:50   ` David Lechner
2019-01-31 13:39 ` [PATCH 21/35] ARM: davinci: cp-intc: add a new config structure Bartosz Golaszewski
2019-02-04 23:54   ` David Lechner
2019-01-31 13:39 ` [PATCH 22/35] ARM: davinci: cp-intc: add the new config structures for da8xx SoCs Bartosz Golaszewski
2019-02-04 23:58   ` David Lechner
2019-02-07 13:35   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 23/35] ARM: davinci: cp-intc: use a common prefix for all symbols Bartosz Golaszewski
2019-02-05  0:01   ` David Lechner
2019-02-07 13:43   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 24/35] ARM: davinci: cp-intc: convert all hex numbers to lowercase Bartosz Golaszewski
2019-02-05  0:04   ` David Lechner
2019-01-31 13:39 ` Bartosz Golaszewski [this message]
2019-02-05  0:29   ` [PATCH 25/35] ARM: davinci: cp-intc: use the new-style config structure David Lechner
2019-02-08 16:27     ` Bartosz Golaszewski
2019-02-07 13:59   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 26/35] ARM: davinci: cp-intc: improve coding style Bartosz Golaszewski
2019-02-05  0:35   ` David Lechner
2019-01-31 13:39 ` [PATCH 27/35] ARM: davinci: cp-intc: unify error handling Bartosz Golaszewski
2019-02-05  0:37   ` David Lechner
2019-01-31 13:39 ` [PATCH 28/35] ARM: davinci: cp-intc: remove unneeded include Bartosz Golaszewski
2019-02-05  0:39   ` David Lechner
2019-01-31 13:39 ` [PATCH 29/35] ARM: davinci: cp-intc: drop GPL license boilerplate Bartosz Golaszewski
2019-02-05  0:41   ` David Lechner
2019-01-31 13:39 ` [PATCH 30/35] ARM: davinci: cp-intc: remove redundant comments Bartosz Golaszewski
2019-02-05  0:42   ` David Lechner
2019-01-31 13:39 ` [PATCH 31/35] irqchip: davinci-cp-intc: move the driver to drivers/irqchip Bartosz Golaszewski
2019-02-05  0:44   ` David Lechner
2019-01-31 13:39 ` [PATCH 32/35] ARM: davinci: remove intc related fields from davinci_soc_info Bartosz Golaszewski
2019-02-05  0:48   ` David Lechner
2019-02-07 14:04   ` Sekhar Nori
2019-02-08 16:41     ` Bartosz Golaszewski
2019-01-31 13:39 ` [PATCH 33/35] ARM: davinci: prepare to remove mach/irqs.h Bartosz Golaszewski
2019-02-07 14:07   ` Sekhar Nori
2019-01-31 13:39 ` [PATCH 34/35] ARM: davinci: stop using defines from mach/irqs.h Bartosz Golaszewski
2019-02-05  1:05   ` David Lechner
2019-01-31 13:39 ` [PATCH 35/35] ARM: davinci: remove mach/irqs.h Bartosz Golaszewski
2019-02-05  1:06   ` David Lechner
2019-02-04 21:49 ` [PATCH 00/35] ARM: davinci: modernize the irq support David Lechner
2019-02-05 16:11   ` Bartosz Golaszewski
2019-02-08 11:43     ` Sekhar Nori
2019-02-08 12:27       ` Bartosz Golaszewski
2019-02-08 12:29         ` Sekhar Nori
2019-02-07 15:24 ` Sekhar Nori

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