Declare the number of DMA requestor lines per platform :
- for pxa25x: 40 requestor lines
- for pxa27x: 75 requestor lines
- for pxa3xx: 100 requestor lines
This information will be used to activate the DMA flow control or not.
Signed-off-by: Robert Jarzmik <robert.jarz...@free.fr>
---
Since v1: rename of property to #dma-requests
---
arch/arm/boot/dts/pxa27x.dtsi | 1 +
arch/arm/boot/dts/pxa3xx.dtsi | 1 +
arch/arm/mach-pxa/devices.c | 3 ++-
arch/arm/mach-pxa/pxa25x.c | 2 +-
arch/arm/mach-pxa/pxa27x.c | 2 +-
arch/arm/mach-pxa/pxa3xx.c | 2 +-
arch/arm/plat-pxa/include/plat/dma.h | 2 +-
7 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/dts/pxa27x.dtsi b/arch/arm/boot/dts/pxa27x.dtsi
index ef366b204c89..aab08a48dbca 100644
--- a/arch/arm/boot/dts/pxa27x.dtsi
+++ b/arch/arm/boot/dts/pxa27x.dtsi
@@ -13,6 +13,7 @@
interrupts = <25>;
#dma-channels = <32>;
#dma-cells = <2>;
+ #dma-requests = <75>;
status = "okay";
};
diff --git a/arch/arm/boot/dts/pxa3xx.dtsi b/arch/arm/boot/dts/pxa3xx.dtsi
index cf6998a0804d..bea454f50ff9 100644
--- a/arch/arm/boot/dts/pxa3xx.dtsi
+++ b/arch/arm/boot/dts/pxa3xx.dtsi
@@ -12,6 +12,7 @@
interrupts = <25>;
#dma-channels = <32>;
#dma-cells = <2>;
+ #dma-requests = <100>;
status = "okay";
};
diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index 6e12c162506f..d9ff6e4dd854 100644
--- a/arch/arm/mach-pxa/devices.c
+++ b/arch/arm/mach-pxa/devices.c
@@ -1233,6 +1233,7 @@ void __init pxa2xx_set_spi_info(unsigned id, struct
pxa2xx_spi_master *info)
static struct mmp_dma_platdata pxa_dma_pdata = {
.dma_channels = 0,
+ .nb_requestors = 0,
};
static struct resource pxa_dma_resource[] = {
@@ -1261,7 +1262,7 @@ static struct platform_device pxa2xx_pxa_dma = {
.resource = pxa_dma_resource,
};
-void __init pxa2xx_set_dmac_info(int nb_channels)
+void __init pxa2xx_set_dmac_info(int nb_channels, int nb_requestors)
{
pxa_dma_pdata.dma_channels = nb_channels;
pxa_register_device(&pxa2xx_pxa_dma, &pxa_dma_pdata);
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index a177bf45feef..823504f48f80 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -206,7 +206,7 @@ static int __init pxa25x_init(void)
register_syscore_ops(&pxa_irq_syscore_ops);
register_syscore_ops(&pxa2xx_mfp_syscore_ops);
- pxa2xx_set_dmac_info(16);
+ pxa2xx_set_dmac_info(16, 40);
pxa_register_device(&pxa25x_device_gpio, &pxa25x_gpio_info);
ret = platform_add_devices(pxa25x_devices,
ARRAY_SIZE(pxa25x_devices));
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 73e96270dc53..d84239c89639 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -310,7 +310,7 @@ static int __init pxa27x_init(void)
if (!of_have_populated_dt()) {
pxa_register_device(&pxa27x_device_gpio,
&pxa27x_gpio_info);
- pxa2xx_set_dmac_info(32);
+ pxa2xx_set_dmac_info(32, 75);
ret = platform_add_devices(devices,
ARRAY_SIZE(devices));
}
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index a1c4c888f246..fb0adb669124 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -450,7 +450,7 @@ static int __init pxa3xx_init(void)
if (of_have_populated_dt())
return 0;
- pxa2xx_set_dmac_info(32);
+ pxa2xx_set_dmac_info(32, 100);
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
if (ret)
return ret;
diff --git a/arch/arm/plat-pxa/include/plat/dma.h
b/arch/arm/plat-pxa/include/plat/dma.h
index 28848b344e2d..ceba3e4184fc 100644
--- a/arch/arm/plat-pxa/include/plat/dma.h
+++ b/arch/arm/plat-pxa/include/plat/dma.h
@@ -95,6 +95,6 @@ static inline int pxad_toggle_reserved_channel(int
legacy_channel)
}
#endif
-extern void __init pxa2xx_set_dmac_info(int nb_channels);
+extern void __init pxa2xx_set_dmac_info(int nb_channels, int nb_requestors);
#endif /* __PLAT_DMA_H */
--
2.1.4
