| /* |
| * 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 <plat-omap/dma-omap.h> |
| #include <mach/mux.h> |
| #include "soc.h" |
| #include <linux/platform_data/asoc-ti-mcbsp.h> |
| |
| #include <mach/irqs.h> |
| |
| #include "iomap.h" |
| #include "dma.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 struct platform_device **omap_mcbsp_devices; |
| |
| static void omap1_mcbsp_request(unsigned int id) |
| { |
| /* |
| * On 1510, 1610 and 1710, McBSP1 and McBSP3 |
| * are DSP public peripherals. |
| */ |
| if (id == 0 || id == 2) { |
| 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 == 0 || id == 2) { |
| 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, |
| }; |
| |
| #define OMAP7XX_MCBSP1_BASE 0xfffb1000 |
| #define OMAP7XX_MCBSP2_BASE 0xfffb1800 |
| |
| #define OMAP1510_MCBSP1_BASE 0xe1011800 |
| #define OMAP1510_MCBSP2_BASE 0xfffb1000 |
| #define OMAP1510_MCBSP3_BASE 0xe1017000 |
| |
| #define OMAP1610_MCBSP1_BASE 0xe1011800 |
| #define OMAP1610_MCBSP2_BASE 0xfffb1000 |
| #define OMAP1610_MCBSP3_BASE 0xe1017000 |
| |
| #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 void omap_mcbsp_register_board_cfg(struct resource *res, int res_count, |
| struct omap_mcbsp_platform_data *config, int size) |
| { |
| int i; |
| |
| omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *), |
| GFP_KERNEL); |
| if (!omap_mcbsp_devices) { |
| printk(KERN_ERR "Could not register McBSP devices\n"); |
| return; |
| } |
| |
| for (i = 0; i < size; i++) { |
| struct platform_device *new_mcbsp; |
| int ret; |
| |
| new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1); |
| if (!new_mcbsp) |
| continue; |
| platform_device_add_resources(new_mcbsp, &res[i * res_count], |
| res_count); |
| config[i].reg_size = 2; |
| config[i].reg_step = 2; |
| new_mcbsp->dev.platform_data = &config[i]; |
| ret = platform_device_add(new_mcbsp); |
| if (ret) { |
| platform_device_put(new_mcbsp); |
| continue; |
| } |
| omap_mcbsp_devices[i] = new_mcbsp; |
| } |
| } |
| |
| static int __init omap1_mcbsp_init(void) |
| { |
| if (!cpu_class_is_omap1()) |
| return -ENODEV; |
| |
| 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 0; |
| } |
| |
| arch_initcall(omap1_mcbsp_init); |