diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.4/0073-pinctrl-qom-use-scm_call-to-route-GPIO-irq-to-Apps.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.4/0073-pinctrl-qom-use-scm_call-to-route-GPIO-irq-to-Apps.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.4/0073-pinctrl-qom-use-scm_call-to-route-GPIO-irq-to-Apps.patch b/target/linux/ipq806x/patches-5.4/0073-pinctrl-qom-use-scm_call-to-route-GPIO-irq-to-Apps.patch new file mode 100644 index 0000000000..78a5bb4173 --- /dev/null +++ b/target/linux/ipq806x/patches-5.4/0073-pinctrl-qom-use-scm_call-to-route-GPIO-irq-to-Apps.patch @@ -0,0 +1,71 @@ +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> +--- + +--- 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" +@@ -628,6 +629,9 @@ static void msm_gpio_irq_mask(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]; + +@@ -732,11 +736,30 @@ 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; ++ qcom_scm_io_readl(addr, &val); ++ __iormb(); ++ ++ val &= ~(7 << g->intr_target_bit); ++ val |= g->intr_target_kpss_val << g->intr_target_bit; ++ ++ __iowmb(); ++ ret = qcom_scm_io_writel(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 |