For better maintenance split ACPI helpers to the separate module.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/dma/dw/Makefile | 3 ++-
drivers/dma/dw/acpi.c | 53 +++++++++++++++++++++++++++++++++++++++
drivers/dma/dw/internal.h | 8 ++++++
drivers/dma/dw/platform.c | 52 --------------------------------------
4 files changed, 63 insertions(+), 53 deletions(-)
create mode 100644 drivers/dma/dw/acpi.c
diff --git a/drivers/dma/dw/Makefile b/drivers/dma/dw/Makefile
index 63ed895c09aa..5e69815f3cf1 100644
--- a/drivers/dma/dw/Makefile
+++ b/drivers/dma/dw/Makefile
@@ -3,7 +3,8 @@ obj-$(CONFIG_DW_DMAC_CORE) += dw_dmac_core.o
dw_dmac_core-objs := core.o dw.o idma32.o
obj-$(CONFIG_DW_DMAC) += dw_dmac.o
-dw_dmac-objs := platform.o
+dw_dmac-y := platform.o
+dw_dmac-$(CONFIG_ACPI) += acpi.o
obj-$(CONFIG_DW_DMAC_PCI) += dw_dmac_pci.o
dw_dmac_pci-objs := pci.o
diff --git a/drivers/dma/dw/acpi.c b/drivers/dma/dw/acpi.c
new file mode 100644
index 000000000000..f6e8d55b4f6e
--- /dev/null
+++ b/drivers/dma/dw/acpi.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2013,2019 Intel Corporation
+
+#include <linux/acpi.h>
+#include <linux/acpi_dma.h>
+
+#include "internal.h"
+
+static bool dw_dma_acpi_filter(struct dma_chan *chan, void *param)
+{
+ struct acpi_dma_spec *dma_spec = param;
+ struct dw_dma_slave slave = {
+ .dma_dev = dma_spec->dev,
+ .src_id = dma_spec->slave_id,
+ .dst_id = dma_spec->slave_id,
+ .m_master = 0,
+ .p_master = 1,
+ };
+
+ return dw_dma_filter(chan, &slave);
+}
+
+void dw_dma_acpi_controller_register(struct dw_dma *dw)
+{
+ struct device *dev = dw->dma.dev;
+ struct acpi_dma_filter_info *info;
+ int ret;
+
+ if (!has_acpi_companion(dev))
+ return;
+
+ info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return;
+
+ dma_cap_zero(info->dma_cap);
+ dma_cap_set(DMA_SLAVE, info->dma_cap);
+ info->filter_fn = dw_dma_acpi_filter;
+
+ ret = acpi_dma_controller_register(dev, acpi_dma_simple_xlate, info);
+ if (ret)
+ dev_err(dev, "could not register acpi_dma_controller\n");
+}
+
+void dw_dma_acpi_controller_free(struct dw_dma *dw)
+{
+ struct device *dev = dw->dma.dev;
+
+ if (!has_acpi_companion(dev))
+ return;
+
+ acpi_dma_controller_free(dev);
+}
diff --git a/drivers/dma/dw/internal.h b/drivers/dma/dw/internal.h
index df5c84e2a4fd..acada530aa96 100644
--- a/drivers/dma/dw/internal.h
+++ b/drivers/dma/dw/internal.h
@@ -23,6 +23,14 @@ int do_dw_dma_enable(struct dw_dma_chip *chip);
extern bool dw_dma_filter(struct dma_chan *chan, void *param);
+#ifdef CONFIG_ACPI
+void dw_dma_acpi_controller_register(struct dw_dma *dw);
+void dw_dma_acpi_controller_free(struct dw_dma *dw);
+#else /* !CONFIG_ACPI */
+static inline void dw_dma_acpi_controller_register(struct dw_dma *dw) {}
+static inline void dw_dma_acpi_controller_free(struct dw_dma *dw) {}
+#endif /* !CONFIG_ACPI */
+
struct dw_dma_chip_pdata {
const struct dw_dma_platform_data *pdata;
int (*probe)(struct dw_dma_chip *chip);
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index 11f2f6ed4c8a..dcf9b6dc96a9 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -19,7 +19,6 @@
#include <linux/of.h>
#include <linux/of_dma.h>
#include <linux/acpi.h>
-#include <linux/acpi_dma.h>
#include "internal.h"
@@ -55,57 +54,6 @@ static struct dma_chan *dw_dma_of_xlate(struct of_phandle_args *dma_spec,
return dma_request_channel(cap, dw_dma_filter, &slave);
}
-#ifdef CONFIG_ACPI
-static bool dw_dma_acpi_filter(struct dma_chan *chan, void *param)
-{
- struct acpi_dma_spec *dma_spec = param;
- struct dw_dma_slave slave = {
- .dma_dev = dma_spec->dev,
- .src_id = dma_spec->slave_id,
- .dst_id = dma_spec->slave_id,
- .m_master = 0,
- .p_master = 1,
- };
-
- return dw_dma_filter(chan, &slave);
-}
-
-static void dw_dma_acpi_controller_register(struct dw_dma *dw)
-{
- struct device *dev = dw->dma.dev;
- struct acpi_dma_filter_info *info;
- int ret;
-
- if (!has_acpi_companion(dev))
- return;
-
- info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
- if (!info)
- return;
-
- dma_cap_zero(info->dma_cap);
- dma_cap_set(DMA_SLAVE, info->dma_cap);
- info->filter_fn = dw_dma_acpi_filter;
-
- ret = acpi_dma_controller_register(dev, acpi_dma_simple_xlate, info);
- if (ret)
- dev_err(dev, "could not register acpi_dma_controller\n");
-}
-
-static void dw_dma_acpi_controller_free(struct dw_dma *dw)
-{
- struct device *dev = dw->dma.dev;
-
- if (!has_acpi_companion(dev))
- return;
-
- acpi_dma_controller_free(dev);
-}
-#else /* !CONFIG_ACPI */
-static inline void dw_dma_acpi_controller_register(struct dw_dma *dw) {}
-static inline void dw_dma_acpi_controller_free(struct dw_dma *dw) {}
-#endif /* !CONFIG_ACPI */
-
#ifdef CONFIG_OF
static struct dw_dma_platform_data *
dw_dma_parse_dt(struct platform_device *pdev)
--
2.20.1
