From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/mach-omap1/mcbsp.c | 410 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 410 insertions(+) create mode 100644 arch/arm/mach-omap1/mcbsp.c (limited to 'arch/arm/mach-omap1/mcbsp.c') 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 + * + * 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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#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); -- cgit v1.2.3