This patch creates a virtual platform device each time the apb-soc-regs
and sctl devices have been probed for a given sta2x11 instance.
This will trigger clock registration for such instance.
Signed-off-by: Davide Ciminaghi <cimina...@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asna...@st.com>
---
arch/x86/include/asm/sta2x11.h | 1 +
arch/x86/platform/sta2x11/sta2x11.c | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/sta2x11.h b/arch/x86/include/asm/sta2x11.h
index 31fc648..3c5dee4 100644
--- a/arch/x86/include/asm/sta2x11.h
+++ b/arch/x86/include/asm/sta2x11.h
@@ -78,6 +78,7 @@ struct sta2x11_instance_data *sta2x11_dev_to_instance(struct
device *dev)
#define STA2X11_APBREG_NAME "sta2x11-apbreg"
#define STA2X11_APB_SOC_REGS_NAME "sta2x11-apb-soc-regs"
#define STA2X11_VIC_NAME "sta2x11-vic"
+#define STA2X11_CLOCK_REGS_NAME "sta2x11-clock-regs"
/* CAN and MLB */
#define APBREG_BSR 0x00 /* Bridge Status Reg */
diff --git a/arch/x86/platform/sta2x11/sta2x11.c
b/arch/x86/platform/sta2x11/sta2x11.c
index 1f1d1af..57ed10d 100644
--- a/arch/x86/platform/sta2x11/sta2x11.c
+++ b/arch/x86/platform/sta2x11/sta2x11.c
@@ -243,6 +243,20 @@ struct sta2x11_instance_data
*sta2x11_node_to_instance(struct device_node *n)
}
EXPORT_SYMBOL(sta2x11_node_to_instance);
+static int create_clk_dev(struct sta2x11_instance_data *instance)
+{
+ int stat;
+ struct platform_device *cpd =
+ platform_device_alloc(STA2X11_CLOCK_REGS_NAME, instance->id);
+ if (!cpd)
+ return -ENOMEM;
+
+ cpd->dev.platform_data = instance;
+ stat = platform_device_add(cpd);
+ if (stat < 0)
+ platform_device_put(cpd);
+ return stat;
+}
/* Common probe for the four platform devices */
static int sta2x11_platform_probe(struct platform_device *dev,
@@ -312,6 +326,13 @@ static int sta2x11_platform_probe(struct platform_device
*dev,
}
*dst = platform_drv_data;
+ /*
+ * When both sctl and apb_soc_regs have been probed, we're ready for
+ * creating the "sta2x11-clock-regs" platform device
+ */
+ if (instance->sctl && instance->apb_soc_regs)
+ create_clk_dev(instance);
+
platform_set_drvdata(dev, platform_drv_data);
return 0;
}
--
1.7.7.2
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