From: Eduardo Valentin <eduardo.valentin@xxxxxxxxxxx>
This patch adds support for mach-omap2 based on current
mcbsp platform driver.
Signed-off-by: Eduardo Valentin <eduardo.valentin@xxxxxxxxxxx>
---
arch/arm/mach-omap2/Makefile | 2 +
arch/arm/mach-omap2/mcbsp.c | 105 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 107 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/mcbsp.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 552664c..84fa698 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -7,6 +7,8 @@ obj-y := irq.o id.o io.o memory.o control.o prcm.o clock.o mux.o \
devices.o serial.o gpmc.o timer-gp.o powerdomain.o \
clockdomain.o
+obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
+
# Functions loaded to SRAM
obj-$(CONFIG_ARCH_OMAP2) += sram24xx.o
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
new file mode 100644
index 0000000..e2ee8f7
--- /dev/null
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -0,0 +1,105 @@
+/*
+ * linux/arch/arm/mach-omap2/mcbsp.c
+ *
+ * Copyright (C) 2008 Instituto Nokia de Tecnologia
+ * Contact: Eduardo Valentin <eduardo.valentin@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Multichannel mode not supported.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <asm/arch/dma.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/mcbsp.h>
+
+static void omap2_mcbsp2_mux_setup(void)
+{
+ omap_cfg_reg(Y15_24XX_MCBSP2_CLKX);
+ omap_cfg_reg(R14_24XX_MCBSP2_FSX);
+ omap_cfg_reg(W15_24XX_MCBSP2_DR);
+ omap_cfg_reg(V15_24XX_MCBSP2_DX);
+ omap_cfg_reg(V14_24XX_GPIO117);
+ /*
+ * TODO: Need to add MUX settings for OMAP 2430 SDP
+ */
+}
+
+static void omap2_mcbsp_request(unsigned int id)
+{
+ if (cpu_is_omap2420() && (id == OMAP_MCBSP2))
+ omap2_mcbsp2_mux_setup();
+}
+
+static int omap2_mcbsp_check(unsigned int id)
+{
+ if (id > OMAP_MAX_MCBSP_COUNT - 1) {
+ printk(KERN_ERR "OMAP-McBSP: McBSP%d doesn't exist\n", id + 1);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static struct omap_mcbsp_ops omap2_mcbsp_ops = {
+ .request = omap2_mcbsp_request,
+ .check = omap2_mcbsp_check,
+};
+
+static struct omap_mcbsp_platform_data omap2_mcbsp_pdata[] = {
+#ifdef CONFIG_ARCH_OMAP24XX
+ {
+ .virt_base = IO_ADDRESS(OMAP24XX_MCBSP1_BASE),
+ .dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
+ .dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
+ .rx_irq = INT_24XX_MCBSP1_IRQ_RX,
+ .tx_irq = INT_24XX_MCBSP1_IRQ_TX,
+ .ops = &omap2_mcbsp_ops,
+ .clocks = { "mcbsp_ick", "mcbsp_fck" },
+ },
+ {
+ .virt_base = IO_ADDRESS(OMAP24XX_MCBSP2_BASE),
+ .dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
+ .dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
+ .rx_irq = INT_24XX_MCBSP2_IRQ_RX,
+ .tx_irq = INT_24XX_MCBSP2_IRQ_TX,
+ .ops = &omap2_mcbsp_ops,
+ .clocks = { "mcbsp_ick", "mcbsp_fck" },
+ },
+#endif
+#ifdef CONFIG_ARCH_OMAP34XX
+ {
+ .virt_base = IO_ADDRESS(OMAP34XX_MCBSP1_BASE),
+ .dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
+ .dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
+ .rx_irq = INT_24XX_MCBSP1_IRQ_RX,
+ .tx_irq = INT_24XX_MCBSP1_IRQ_TX,
+ .ops = &omap2_mcbsp_ops,
+ .clocks = { "mcbsp_ick", "mcbsp_fck" },
+ },
+ {
+ .virt_base = IO_ADDRESS(OMAP34XX_MCBSP2_BASE),
+ .dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
+ .dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
+ .rx_irq = INT_24XX_MCBSP2_IRQ_RX,
+ .tx_irq = INT_24XX_MCBSP2_IRQ_TX,
+ .ops = &omap2_mcbsp_ops,
+ .clocks = { "mcbsp_ick", "mcbsp_fck" },
+ },
+#endif
+};
+#define mcbsp_count ARRAY_SIZE(omap2_mcbsp_pdata)
+
+int __init omap2_mcbsp_init(void)
+{
+ omap_mcbsp_register_board_cfg(omap2_mcbsp_pdata, mcbsp_count);
+
+ return omap_mcbsp_init();
+}
+arch_initcall(omap2_mcbsp_init);
--
1.5.5.1.67.gbdb8.dirty
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