[v5,3/4] davinci: da8xx/omapl EVM: Specify reserved channels/slots

Commit Message

Sekhar Nori June 29, 2010, 6:05 a.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 212d970..b61e872 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -494,12 +494,42 @@  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 struct edma_rsv_info da830_edma_rsv[] = {
+	{
+		.rsv_chans	= da830_dma_rsv_chans,
+		.rsv_slots	= da830_dma_rsv_slots,
+	},
+};
+
 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_edma_rsv);
 	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 2ec3095..ef7d9de 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -629,6 +629,56 @@  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 struct edma_rsv_info da850_edma_cc0_rsv = {
+	.rsv_chans	= da850_dma0_rsv_chans,
+	.rsv_slots	= da850_dma0_rsv_slots,
+};
+
+static struct edma_rsv_info da850_edma_cc1_rsv = {
+	.rsv_chans	= da850_dma1_rsv_chans,
+	.rsv_slots	= da850_dma1_rsv_slots,
+};
+
+static struct edma_rsv_info *da850_edma_rsv[2] = {
+	&da850_edma_cc0_rsv,
+	&da850_edma_cc1_rsv,
+};
+
 static __init void da850_evm_init(void)
 {
 	int ret;
@@ -638,7 +688,7 @@  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_edma_rsv);
 	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 1d956bf..52bc7b1 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -255,18 +255,21 @@  static struct platform_device da850_edma_device = {
 	.resource	= da850_edma_resources,
 };
 
-int __init da8xx_register_edma(void)
+int __init da830_register_edma(struct edma_rsv_info *rsv)
 {
-	struct platform_device *pdev;
+	da830_edma_cc0_info.rsv = rsv;
 
-	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(struct edma_rsv_info *rsv[2])
+{
+	if (rsv) {
+		da850_edma_cc_info[0].rsv = rsv[0];
+		da850_edma_cc_info[1].rsv = rsv[1];
+	}
+
+	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 1b31a9a..3c07059 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -67,7 +67,8 @@  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(struct edma_rsv_info *rsv);
+int da850_register_edma(struct edma_rsv_info *rsv[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);