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-rw-r--r--arch/arm/mach-omap1/mcbsp.c410
1 files changed, 410 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/mcbsp.c b/arch/arm/mach-omap1/mcbsp.c
new file mode 100644
index 00000000..d9af9811
--- /dev/null
+++ b/arch/arm/mach-omap1/mcbsp.c
@@ -0,0 +1,410 @@
+/*
+ * linux/arch/arm/mach-omap1/mcbsp.c
+ *
+ * Copyright (C) 2008 Instituto Nokia de Tecnologia
+ * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
+ *
+ * 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/ioport.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <mach/irqs.h>
+#include <plat/dma.h>
+#include <plat/mux.h>
+#include <plat/cpu.h>
+#include <plat/mcbsp.h>
+
+#define DPS_RSTCT2_PER_EN (1 << 0)
+#define DSP_RSTCT2_WD_PER_EN (1 << 1)
+
+static int dsp_use;
+static struct clk *api_clk;
+static struct clk *dsp_clk;
+
+static void omap1_mcbsp_request(unsigned int id)
+{
+ /*
+ * On 1510, 1610 and 1710, McBSP1 and McBSP3
+ * are DSP public peripherals.
+ */
+ if (id == OMAP_MCBSP1 || id == OMAP_MCBSP3) {
+ if (dsp_use++ == 0) {
+ api_clk = clk_get(NULL, "api_ck");
+ dsp_clk = clk_get(NULL, "dsp_ck");
+ if (!IS_ERR(api_clk) && !IS_ERR(dsp_clk)) {
+ clk_enable(api_clk);
+ clk_enable(dsp_clk);
+
+ /*
+ * DSP external peripheral reset
+ * FIXME: This should be moved to dsp code
+ */
+ __raw_writew(__raw_readw(DSP_RSTCT2) | DPS_RSTCT2_PER_EN |
+ DSP_RSTCT2_WD_PER_EN, DSP_RSTCT2);
+ }
+ }
+ }
+}
+
+static void omap1_mcbsp_free(unsigned int id)
+{
+ if (id == OMAP_MCBSP1 || id == OMAP_MCBSP3) {
+ if (--dsp_use == 0) {
+ if (!IS_ERR(api_clk)) {
+ clk_disable(api_clk);
+ clk_put(api_clk);
+ }
+ if (!IS_ERR(dsp_clk)) {
+ clk_disable(dsp_clk);
+ clk_put(dsp_clk);
+ }
+ }
+ }
+}
+
+static struct omap_mcbsp_ops omap1_mcbsp_ops = {
+ .request = omap1_mcbsp_request,
+ .free = omap1_mcbsp_free,
+};
+
+#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
+struct resource omap7xx_mcbsp_res[][6] = {
+ {
+ {
+ .start = OMAP7XX_MCBSP1_BASE,
+ .end = OMAP7XX_MCBSP1_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_7XX_McBSP1RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_7XX_McBSP1TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP1_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP1_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+ {
+ {
+ .start = OMAP7XX_MCBSP2_BASE,
+ .end = OMAP7XX_MCBSP2_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_7XX_McBSP2RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_7XX_McBSP2TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP3_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP3_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+};
+
+#define omap7xx_mcbsp_res_0 omap7xx_mcbsp_res[0]
+
+static struct omap_mcbsp_platform_data omap7xx_mcbsp_pdata[] = {
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+};
+#define OMAP7XX_MCBSP_RES_SZ ARRAY_SIZE(omap7xx_mcbsp_res[1])
+#define OMAP7XX_MCBSP_COUNT ARRAY_SIZE(omap7xx_mcbsp_res)
+#else
+#define omap7xx_mcbsp_res_0 NULL
+#define omap7xx_mcbsp_pdata NULL
+#define OMAP7XX_MCBSP_RES_SZ 0
+#define OMAP7XX_MCBSP_COUNT 0
+#endif
+
+#ifdef CONFIG_ARCH_OMAP15XX
+struct resource omap15xx_mcbsp_res[][6] = {
+ {
+ {
+ .start = OMAP1510_MCBSP1_BASE,
+ .end = OMAP1510_MCBSP1_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_McBSP1RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_McBSP1TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP1_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP1_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+ {
+ {
+ .start = OMAP1510_MCBSP2_BASE,
+ .end = OMAP1510_MCBSP2_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_1510_SPI_RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_1510_SPI_TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP2_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP2_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+ {
+ {
+ .start = OMAP1510_MCBSP3_BASE,
+ .end = OMAP1510_MCBSP3_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_McBSP3RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_McBSP3TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP3_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP3_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+};
+
+#define omap15xx_mcbsp_res_0 omap15xx_mcbsp_res[0]
+
+static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+};
+#define OMAP15XX_MCBSP_RES_SZ ARRAY_SIZE(omap15xx_mcbsp_res[1])
+#define OMAP15XX_MCBSP_COUNT ARRAY_SIZE(omap15xx_mcbsp_res)
+#else
+#define omap15xx_mcbsp_res_0 NULL
+#define omap15xx_mcbsp_pdata NULL
+#define OMAP15XX_MCBSP_RES_SZ 0
+#define OMAP15XX_MCBSP_COUNT 0
+#endif
+
+#ifdef CONFIG_ARCH_OMAP16XX
+struct resource omap16xx_mcbsp_res[][6] = {
+ {
+ {
+ .start = OMAP1610_MCBSP1_BASE,
+ .end = OMAP1610_MCBSP1_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_McBSP1RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_McBSP1TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP1_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP1_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+ {
+ {
+ .start = OMAP1610_MCBSP2_BASE,
+ .end = OMAP1610_MCBSP2_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_1610_McBSP2_RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_1610_McBSP2_TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP2_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP2_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+ {
+ {
+ .start = OMAP1610_MCBSP3_BASE,
+ .end = OMAP1610_MCBSP3_BASE + SZ_256,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "rx",
+ .start = INT_McBSP3RX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "tx",
+ .start = INT_McBSP3TX,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "rx",
+ .start = OMAP_DMA_MCBSP3_RX,
+ .flags = IORESOURCE_DMA,
+ },
+ {
+ .name = "tx",
+ .start = OMAP_DMA_MCBSP3_TX,
+ .flags = IORESOURCE_DMA,
+ },
+ },
+};
+
+#define omap16xx_mcbsp_res_0 omap16xx_mcbsp_res[0]
+
+static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+ {
+ .ops = &omap1_mcbsp_ops,
+ },
+};
+#define OMAP16XX_MCBSP_RES_SZ ARRAY_SIZE(omap16xx_mcbsp_res[1])
+#define OMAP16XX_MCBSP_COUNT ARRAY_SIZE(omap16xx_mcbsp_res)
+#else
+#define omap16xx_mcbsp_res_0 NULL
+#define omap16xx_mcbsp_pdata NULL
+#define OMAP16XX_MCBSP_RES_SZ 0
+#define OMAP16XX_MCBSP_COUNT 0
+#endif
+
+static int __init omap1_mcbsp_init(void)
+{
+ if (!cpu_class_is_omap1())
+ return -ENODEV;
+
+ if (cpu_is_omap7xx())
+ omap_mcbsp_count = OMAP7XX_MCBSP_COUNT;
+ else if (cpu_is_omap15xx())
+ omap_mcbsp_count = OMAP15XX_MCBSP_COUNT;
+ else if (cpu_is_omap16xx())
+ omap_mcbsp_count = OMAP16XX_MCBSP_COUNT;
+
+ mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
+ GFP_KERNEL);
+ if (!mcbsp_ptr)
+ return -ENOMEM;
+
+ if (cpu_is_omap7xx())
+ omap_mcbsp_register_board_cfg(omap7xx_mcbsp_res_0,
+ OMAP7XX_MCBSP_RES_SZ,
+ omap7xx_mcbsp_pdata,
+ OMAP7XX_MCBSP_COUNT);
+
+ if (cpu_is_omap15xx())
+ omap_mcbsp_register_board_cfg(omap15xx_mcbsp_res_0,
+ OMAP15XX_MCBSP_RES_SZ,
+ omap15xx_mcbsp_pdata,
+ OMAP15XX_MCBSP_COUNT);
+
+ if (cpu_is_omap16xx())
+ omap_mcbsp_register_board_cfg(omap16xx_mcbsp_res_0,
+ OMAP16XX_MCBSP_RES_SZ,
+ omap16xx_mcbsp_pdata,
+ OMAP16XX_MCBSP_COUNT);
+
+ return omap_mcbsp_init();
+}
+
+arch_initcall(omap1_mcbsp_init);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 07:05:18 +0000