irqchip: msm: Add snaphot of msm irq driver

Snapshot the msm irq driver as of msm-3.14 commit:

3bc54cf86bdc7affa7cd4bf7faa3c57fe8f8819d (Merge "msm:
camera: Add dummy sub module in sensor pipeline")

Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>

Conflicts:
	drivers/irqchip/Kconfig
	drivers/irqchip/Makefile

Change-Id: Idf5284906af960fe03dcf881df1b57149c8e6ad8

4 files changed, 113 insertions, 0 deletions

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 4d7294e5d982..463dbf3dbf6d 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -193,3 +193,7 @@ config IRQ_MXS
 	def_bool y if MACH_ASM9260 || ARCH_MXS
 	select IRQ_DOMAIN
 	select STMP_DEVICE
+
+config MSM_IRQ
+	bool
+	select IRQ_DOMAIN
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 177f78f6e6d6..305f110447a3 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -55,3 +55,5 @@ obj-$(CONFIG_RENESAS_H8S_INTC)		+= irq-renesas-h8s.o
 obj-$(CONFIG_ARCH_SA1100)		+= irq-sa11x0.o
 obj-$(CONFIG_INGENIC_IRQ)		+= irq-ingenic.o
 obj-$(CONFIG_IMX_GPCV2)			+= irq-imx-gpcv2.o
+obj-$(CONFIG_MSM_IRQ)                   += irq-msm.o
+obj-$(CONFIG_MSM_SHOW_RESUME_IRQ)       += msm_show_resume_irq.o
diff --git a/drivers/irqchip/irq-msm.c b/drivers/irqchip/irq-msm.c
new file mode 100644
index 000000000000..420a86796d35
--- /dev/null
+++ b/drivers/irqchip/irq-msm.c
@@ -0,0 +1,56 @@
+/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/irqchip/qpnp-int.h>
+#include <linux/irqchip/msm-gpio-irq.h>
+#include <linux/irqchip/msm-mpm-irq.h>
+#include <linux/mfd/wcd9xxx/core.h>
+#include "irqchip.h"
+
+static int __init irq_msm_gpio_init(struct device_node *node,
+			struct device_node *parent)
+{
+	int rc;
+
+#ifdef CONFIG_USE_PINCTRL_IRQ
+	rc = msm_tlmm_of_irq_init(node, parent);
+#else
+	rc = msm_gpio_of_init(node, parent);
+#endif
+	if (rc) {
+		pr_err("Couldn't initlialize gpio irq rc = %d\n", rc);
+		return rc;
+	}
+
+	/*
+	 * Initialize the mpm after gpio (and gic) are initialized. Note that
+	 * gpio irq controller is the child of gic irq controller, hence gic's
+	 * init function will be called prior to gpio.
+	 */
+	of_mpm_init();
+
+	return 0;
+}
+
+static int __init pinctrl_irq_dummy(struct device_node *node,
+			struct device_node *parent)
+{
+	return 0;
+}
+#ifdef CONFIG_USE_PINCTRL_IRQ
+IRQCHIP_DECLARE(tlmmv3_irq, "qcom,msm-tlmm-gp", irq_msm_gpio_init);
+#else
+IRQCHIP_DECLARE(tlmm_irq, "qcom,msm-gpio", irq_msm_gpio_init);
+#endif
+IRQCHIP_DECLARE(8996_pinctrl, "qcom,msm8996-pinctrl", pinctrl_irq_dummy);
+IRQCHIP_DECLARE(qpnp_irq, "qcom,spmi-pmic-arb", qpnpint_of_init);
+IRQCHIP_DECLARE(wcd9xxx_irq, "qcom,wcd9xxx-irq", wcd9xxx_irq_of_init);
diff --git a/include/linux/irqchip/msm-gpio-irq.h b/include/linux/irqchip/msm-gpio-irq.h
new file mode 100644
index 000000000000..f57279424038
--- /dev/null
+++ b/include/linux/irqchip/msm-gpio-irq.h
@@ -0,0 +1,51 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef MSM_GPIO_IRQ_H
+#define MSM_GPIO_IRQ_H
+
+#include <linux/irq.h>
+
+#if (defined(CONFIG_GPIO_MSM_V1) || defined(CONFIG_GPIO_MSM_V2) \
+	|| defined(CONFIG_GPIO_MSM_V3) && !defined(CONFIG_USE_PINCTRL_IRQ))
+int __init msm_gpio_of_init(struct device_node *node,
+					struct device_node *parent);
+extern struct irq_chip msm_gpio_irq_extn;
+static inline int __init msm_tlmm_of_irq_init(struct device_node *node,
+					struct device_node *parent)
+{
+	return 0;
+}
+#elif defined(CONFIG_PINCTRL_MSM_TLMM)
+int __init msm_tlmm_of_irq_init(struct device_node *node,
+					struct device_node *parent);
+extern struct irq_chip mpm_tlmm_irq_extn;
+static inline int __init msm_gpio_of_init(struct device_node *node,
+					struct device_node *parent)
+{
+	return 0;
+}
+#else
+extern struct irq_chip mpm_pinctrl_extn;
+static inline int __init msm_tlmm_of_irq_init(struct device_node *node,
+					      struct device_node *parent)
+{
+	return 0;
+}
+
+static inline int __init msm_gpio_of_init(struct device_node *node,
+					struct device_node *parent)
+{
+	return 0;
+}
+#endif
+#endif