mcbuf_sz means bytes to allocate for MicroCode buffer.
flags is for irq sharing, default is non-shared, in AMD
Carrizo, pl330 shares IRQ with its corresponding UART device.
Signed-off-by: Wang Hongcheng <annie.w...@amd.com>
---
drivers/acpi/acpi_apd.c | 17 +++++++++++++++++
drivers/dma/pl330.c | 9 ++++++++-
include/linux/amba/pl330.h | 2 ++
3 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
index 9520daf..4d71a65 100644
--- a/drivers/acpi/acpi_apd.c
+++ b/drivers/acpi/acpi_apd.c
@@ -20,6 +20,9 @@
#include <linux/pm.h>
#include <linux/amba/bus.h>
#include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
+#include <linux/interrupt.h>
+#include <linux/amba/pl330.h>
#include "internal.h"
@@ -33,6 +36,14 @@ struct apd_private_data;
#define ACPI_APD_SYSFS BIT(0)
#define ACPI_APD_PM BIT(1)
+static u8 peri_id[2] = { 0, 1 };
+
+static struct dma_pl330_platdata amd_pl330 = {
+ .nr_valid_peri = 2,
+ .peri_id = peri_id,
+ .mcbuf_sz = 0,
+ .flags = IRQF_SHARED,
+};
/**
* struct apd_device_desc - a descriptor for apd device
* @flags: device flags like %ACPI_APD_SYSFS, %ACPI_APD_PM
@@ -150,6 +161,12 @@ static int acpi_apd_setup_quirks(struct apd_private_data
*pdata)
goto amba_register_err;
kfree(resource);
+
+ dma_cap_set(DMA_MEMCPY, amd_pl330.cap_mask);
+ dma_cap_set(DMA_SLAVE, amd_pl330.cap_mask);
+ dma_cap_set(DMA_CYCLIC, amd_pl330.cap_mask);
+ dma_cap_set(DMA_PRIVATE, amd_pl330.cap_mask);
+
return 0;
amba_register_err:
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 17ee758..5e5fb46 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -26,6 +26,8 @@
#include <linux/scatterlist.h>
#include <linux/of.h>
#include <linux/of_dma.h>
+#include <linux/acpi.h>
+#include <linux/acpi_dma.h>
#include <linux/err.h>
#include <linux/pm_runtime.h>
@@ -488,6 +490,9 @@ struct pl330_dmac {
/* Peripheral channels connected to this DMAC */
unsigned int num_peripherals;
struct dma_pl330_chan *peripherals; /* keep at end */
+
+ /*IRQ register flags */
+ unsigned int flags;
};
struct dma_pl330_desc {
@@ -2800,6 +2805,8 @@ pl330_probe(struct amba_device *adev, const struct
amba_id *id)
pl330->mcbufsz = pdat ? pdat->mcbuf_sz : 0;
+ pl330->flags = pdat ? pdat->flags : IRQF_TRIGGER_NONE;
+
res = &adev->res;
pl330->base = devm_ioremap_resource(&adev->dev, res);
if (IS_ERR(pl330->base))
@@ -2811,7 +2818,7 @@ pl330_probe(struct amba_device *adev, const struct
amba_id *id)
irq = adev->irq[i];
if (irq) {
ret = devm_request_irq(&adev->dev, irq,
- pl330_irq_handler, 0,
+ pl330_irq_handler, pl330->flags,
dev_name(&adev->dev), pl330);
if (ret)
return ret;
diff --git a/include/linux/amba/pl330.h b/include/linux/amba/pl330.h
index fe93758..cdc80f0 100644
--- a/include/linux/amba/pl330.h
+++ b/include/linux/amba/pl330.h
@@ -29,6 +29,8 @@ struct dma_pl330_platdata {
dma_cap_mask_t cap_mask;
/* Bytes to allocate for MC buffer */
unsigned mcbuf_sz;
+ /*flags for irq sharing, default is non-shared*/
+ unsigned flags;
};
extern bool pl330_filter(struct dma_chan *chan, void *param);
--
1.9.1
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