+++ /dev/null
-From 2034addc7e193dc81d7ca60d8884832751b76758 Mon Sep 17 00:00:00 2001
-From: Ajay Kishore <akisho@codeaurora.org>
-Date: Tue, 24 Jan 2017 14:14:16 +0530
-Subject: pinctrl: qcom: use scm_call to route GPIO irq to Apps
-
-For IPQ806x targets, TZ protects the registers that are used to
-configure the routing of interrupts to a target processor.
-To resolve this, this patch uses scm call to route GPIO interrupts
-to application processor. Also the scm call interface is changed.
-
-Change-Id: Ib6c06829d04bc8c20483c36e63da92e26cdef9ce
-Signed-off-by: Ajay Kishore <akisho@codeaurora.org>
----
- drivers/firmware/qcom_scm-32.c | 17 +++++++++++++++++
- drivers/firmware/qcom_scm-64.c | 9 +++++++++
- drivers/firmware/qcom_scm.c | 13 +++++++++++++
- drivers/firmware/qcom_scm.h | 8 ++++++++
- drivers/pinctrl/qcom/pinctrl-msm.c | 34 ++++++++++++++++++++++++++++------
- include/linux/qcom_scm.h | 3 ++-
- 6 files changed, 77 insertions(+), 7 deletions(-)
-
---- a/drivers/firmware/qcom_scm-32.c
-+++ b/drivers/firmware/qcom_scm-32.c
-@@ -561,6 +561,24 @@ int __qcom_scm_pas_mss_reset(struct devi
- return ret ? : le32_to_cpu(out);
- }
-
-+int __qcom_scm_pinmux_read(u32 svc_id, u32 cmd_id, u32 arg1)
-+{
-+ s32 ret;
-+
-+ ret = qcom_scm_call_atomic1(svc_id, cmd_id, arg1);
-+
-+ return ret;
-+}
-+
-+int __qcom_scm_pinmux_write(u32 svc_id, u32 cmd_id, u32 arg1, u32 arg2)
-+{
-+ s32 ret;
-+
-+ ret = qcom_scm_call_atomic2(svc_id, cmd_id, arg1, arg2);
-+
-+ return ret;
-+}
-+
- int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
- {
- struct {
---- a/drivers/firmware/qcom_scm-64.c
-+++ b/drivers/firmware/qcom_scm-64.c
-@@ -366,6 +366,16 @@ int __qcom_scm_pas_mss_reset(struct devi
- return ret ? : res.a1;
- }
-
-+int __qcom_scm_pinmux_read(u32 svc_id, u32 cmd_id, u32 arg1)
-+{
-+ return -ENOTSUPP;
-+}
-+
-+int __qcom_scm_pinmux_write(u32 svc_id, u32 cmd_id, u32 arg1, u32 arg2)
-+{
-+ return -ENOTSUPP;
-+}
-+
- int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
- {
- struct qcom_scm_desc desc = {0};
---- a/drivers/firmware/qcom_scm.c
-+++ b/drivers/firmware/qcom_scm.c
-@@ -470,3 +470,16 @@ static int __init qcom_scm_init(void)
- return platform_driver_register(&qcom_scm_driver);
- }
- subsys_initcall(qcom_scm_init);
-+
-+int qcom_scm_pinmux_read(u32 arg1)
-+{
-+ return __qcom_scm_pinmux_read(SCM_SVC_IO_ACCESS, SCM_IO_READ, arg1);
-+}
-+EXPORT_SYMBOL(qcom_scm_pinmux_read);
-+
-+int qcom_scm_pinmux_write(u32 arg1, u32 arg2)
-+{
-+ return __qcom_scm_pinmux_write(SCM_SVC_IO_ACCESS, SCM_IO_WRITE,
-+ arg1, arg2);
-+}
-+EXPORT_SYMBOL(qcom_scm_pinmux_write);
---- a/drivers/firmware/qcom_scm.h
-+++ b/drivers/firmware/qcom_scm.h
-@@ -58,6 +58,13 @@ extern int __qcom_scm_pas_auth_and_rese
- extern int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral);
- extern int __qcom_scm_pas_mss_reset(struct device *dev, bool reset);
-
-+#define SCM_IO_READ 1
-+#define SCM_IO_WRITE 2
-+#define SCM_SVC_IO_ACCESS 0x5
-+
-+s32 __qcom_scm_pinmux_read(u32 svc_id, u32 cmd_id, u32 arg1);
-+s32 __qcom_scm_pinmux_write(u32 svc_id, u32 cmd_id, u32 arg1, u32 arg2);
-+
- /* common error codes */
- #define QCOM_SCM_V2_EBUSY -12
- #define QCOM_SCM_ENOMEM -5
---- a/drivers/pinctrl/qcom/pinctrl-msm.c
-+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
-@@ -30,7 +30,8 @@
- #include <linux/reboot.h>
- #include <linux/pm.h>
- #include <linux/log2.h>
--
-+#include <linux/qcom_scm.h>
-+#include <linux/io.h>
- #include "../core.h"
- #include "../pinconf.h"
- #include "pinctrl-msm.h"
-@@ -646,6 +647,9 @@ static void msm_gpio_irq_ack(struct irq_
- const struct msm_pingroup *g;
- unsigned long flags;
- u32 val;
-+ u32 addr;
-+ int ret;
-+ const __be32 *reg;
-
- g = &pctrl->soc->groups[d->hwirq];
-
-@@ -684,11 +688,30 @@ static int msm_gpio_irq_set_type(struct
- else
- clear_bit(d->hwirq, pctrl->dual_edge_irqs);
-
-+ int ret = of_device_is_compatible(pctrl->dev->of_node,
-+ "qcom,ipq8064-pinctrl");
- /* Route interrupts to application cpu */
-- val = readl(pctrl->regs + g->intr_target_reg);
-- val &= ~(7 << g->intr_target_bit);
-- val |= g->intr_target_kpss_val << g->intr_target_bit;
-- writel(val, pctrl->regs + g->intr_target_reg);
-+ if (!ret) {
-+ val = readl(pctrl->regs + g->intr_target_reg);
-+ val &= ~(7 << g->intr_target_bit);
-+ val |= g->intr_target_kpss_val << g->intr_target_bit;
-+ writel(val, pctrl->regs + g->intr_target_reg);
-+ } else {
-+ const __be32 *reg = of_get_property(pctrl->dev->of_node, "reg", NULL);
-+ if (reg) {
-+ u32 addr = be32_to_cpup(reg) + g->intr_target_reg;
-+ val = qcom_scm_pinmux_read(addr);
-+ __iormb();
-+
-+ val &= ~(7 << g->intr_target_bit);
-+ val |= g->intr_target_kpss_val << g->intr_target_bit;
-+
-+ __iowmb();
-+ ret = qcom_scm_pinmux_write(addr, val);
-+ if (ret)
-+ pr_err("\n Routing interrupts to Apps proc failed");
-+ }
-+ }
-
- /* Update configuration for gpio.
- * RAW_STATUS_EN is left on for all gpio irqs. Due to the
-@@ -975,4 +998,3 @@ int msm_pinctrl_remove(struct platform_d
- return 0;
- }
- EXPORT_SYMBOL(msm_pinctrl_remove);
--
---- a/include/linux/qcom_scm.h
-+++ b/include/linux/qcom_scm.h
-@@ -43,6 +43,8 @@ extern int qcom_scm_set_remote_state(u32
- extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
- extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
- extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
-+extern s32 qcom_scm_pinmux_read(u32 arg1);
-+extern s32 qcom_scm_pinmux_write(u32 arg1, u32 arg2);
- #else
-
- #include <linux/errno.h>
-@@ -76,5 +78,7 @@ qcom_scm_set_remote_state(u32 state,u32
- static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { return -ENODEV; }
- static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { return -ENODEV; }
- static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { return -ENODEV; }
-+extern s32 qcom_scm_pinmux_read(u32 arg1) { return -ENODEV; }
-+extern s32 qcom_scm_pinmux_write(u32 arg1, u32 arg2) { return -ENODEV; }
- #endif
- #endif
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