[v3,2/3] davinci: da8xx/omapl EVM: Specify reserved channels/slots

Commit Message

Sekhar Nori March 15, 2010, 1:13 p.m. UTC

None

Patch

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index dc19870..90088af 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -482,12 +482,35 @@  static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
 	.bus_delay	= 0,	/* usec */
 };
 
+/*
+ * The following EDMA channels/slots are not being used by drivers (for
+ * example: Timer, GPIO, UART events etc) on da830/omap-l137 EVM, hence
+ * they are being reserved for codecs on the DSP side.
+ */
+static const s16 da830_dma_rsv_chans[][2] = {
+	/* (offset, number) */
+	{ 8,  2},
+	{12,  2},
+	{24,  4},
+	{30,  2},
+	{-1, -1}
+};
+
+static const s16 da830_dma_rsv_slots[][2] = {
+	/* (offset, number) */
+	{ 8,  2},
+	{12,  2},
+	{24,  4},
+	{30, 26},
+	{-1, -1}
+};
+
 static __init void da830_evm_init(void)
 {
 	struct davinci_soc_info *soc_info = &davinci_soc_info;
 	int ret;
 
-	ret = da8xx_register_edma();
+	ret = da830_register_edma(da830_dma_rsv_chans, da830_dma_rsv_slots);
 	if (ret)
 		pr_warning("da830_evm_init: edma registration failed: %d\n",
 				ret);
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 411284d..37f9714 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -612,6 +612,41 @@  static int __init da850_evm_config_emac(void)
 }
 device_initcall(da850_evm_config_emac);
 
+/*
+ * The following EDMA channels/slots are not being used by drivers (for
+ * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM, hence
+ * they are being reserved for codecs on the DSP side.
+ */
+static const s16 da850_dma0_rsv_chans[][2] = {
+	/* (offset, number) */
+	{ 8,  6},
+	{24,  4},
+	{30,  2},
+	{-1, -1}
+};
+
+static const s16 da850_dma0_rsv_slots[][2] = {
+	/* (offset, number) */
+	{ 8,  6},
+	{24,  4},
+	{30, 50},
+	{-1, -1}
+};
+
+static const s16 da850_dma1_rsv_chans[][2] = {
+	/* (offset, number) */
+	{ 0, 28},
+	{30,  2},
+	{-1, -1}
+};
+
+static const s16 da850_dma1_rsv_slots[][2] = {
+	/* (offset, number) */
+	{ 0, 28},
+	{30, 90},
+	{-1, -1}
+};
+
 static __init void da850_evm_init(void)
 {
 	int ret;
@@ -621,7 +656,8 @@  static __init void da850_evm_init(void)
 		pr_warning("da850_evm_init: TPS65070 PMIC init failed: %d\n",
 				ret);
 
-	ret = da8xx_register_edma();
+	ret = da850_register_edma(da850_dma0_rsv_chans, da850_dma0_rsv_slots,
+			da850_dma1_rsv_chans, da850_dma1_rsv_slots);
 	if (ret)
 		pr_warning("da850_evm_init: edma registration failed: %d\n",
 				ret);
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 0a96791..6e913f8 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -248,18 +248,26 @@  static struct platform_device da850_edma_device = {
 	.resource	= da850_edma_resources,
 };
 
-int __init da8xx_register_edma(void)
+int __init da830_register_edma(const s16 (*rsv_chans)[2],
+		const s16 (*rsv_slots)[2])
 {
-	struct platform_device *pdev;
+	da830_edma_info[0].rsv_chans = rsv_chans;
+	da830_edma_info[0].rsv_slots = rsv_slots;
 
-	if (cpu_is_davinci_da830())
-		pdev = &da830_edma_device;
-	else if (cpu_is_davinci_da850())
-		pdev = &da850_edma_device;
-	else
-		return -ENODEV;
+	return platform_device_register(&da830_edma_device);
+}
 
-	return platform_device_register(pdev);
+int __init da850_register_edma(const s16 (*rsv_chans0)[2],
+		const s16 (*rsv_slots0)[2], const s16 (*rsv_chans1)[2],
+		const s16 (*rsv_slots1)[2])
+{
+	da850_edma_info[0].rsv_chans = rsv_chans0;
+	da850_edma_info[0].rsv_slots = rsv_slots0;
+
+	da850_edma_info[1].rsv_chans = rsv_chans1;
+	da850_edma_info[1].rsv_slots = rsv_slots1;
+
+	return platform_device_register(&da850_edma_device);
 }
 
 static struct resource da8xx_i2c_resources0[] = {
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index b87a6ba..015be8c 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -86,7 +86,9 @@  extern void __iomem *da8xx_syscfg1_base;
 void __init da830_init(void);
 void __init da850_init(void);
 
-int da8xx_register_edma(void);
+int da830_register_edma(const s16 (*rsv_chans)[2], const s16 (*rsv_slots)[2]);
+int da850_register_edma(const s16 (*rsv_chans0)[2], const s16 (*rsv_slots0)[2],
+		const s16 (*rsv_chans1)[2], const s16 (*rsv_slots1)[2]);
 int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
 int da8xx_register_watchdog(void);
 int da8xx_register_usb20(unsigned mA, unsigned potpgt);