From: Eduardo Valentin This patch adds support for mach-omap1 based on current mcbsp platform driver. Signed-off-by: Eduardo Valentin --- arch/arm/mach-omap1/Makefile | 2 + arch/arm/mach-omap1/mcbsp.c | 165 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 167 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-omap1/mcbsp.c diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile index 6ebf23b..09246a7 100644 --- a/arch/arm/mach-omap1/Makefile +++ b/arch/arm/mach-omap1/Makefile @@ -5,6 +5,8 @@ # Common support obj-y := io.o id.o clock.o irq.o mux.o serial.o devices.o +obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o + obj-$(CONFIG_OMAP_MPU_TIMER) += time.o obj-$(CONFIG_OMAP_32K_TIMER) += timer32k.o diff --git a/arch/arm/mach-omap1/mcbsp.c b/arch/arm/mach-omap1/mcbsp.c new file mode 100644 index 0000000..f30624a --- /dev/null +++ b/arch/arm/mach-omap1/mcbsp.c @@ -0,0 +1,165 @@ +/* + * 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 + +#define DPS_RSTCT2_PER_EN (1 << 0) +#define DSP_RSTCT2_WD_PER_EN (1 << 1) + +static int omap1_mcbsp_check(unsigned int id) +{ + /* REVISIT: Check correctly for number of registered McBSPs */ + if (cpu_is_omap730()) { + if (id > OMAP_MAX_MCBSP_COUNT - 2) { + printk(KERN_ERR "OMAP-McBSP: McBSP%d doesn't exist\n", + id + 1); + return -ENODEV; + } + return 0; + } + + if (cpu_is_omap15xx() || cpu_is_omap16xx()) { + if (id > OMAP_MAX_MCBSP_COUNT - 1) { + printk(KERN_ERR "OMAP-McBSP: McBSP%d doesn't exist\n", + id + 1); + return -ENODEV; + } + return 0; + } + + return -ENODEV; +} + +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) { + omap_dsp_request_mem(); + /* + * 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) + omap_dsp_release_mem(); +} + +static struct omap_mcbsp_ops omap1_mcbsp_ops = { + .check = omap1_mcbsp_check, + .request = omap1_mcbsp_request, + .free = omap1_mcbsp_free, +}; + +static struct omap_mcbsp_platform_data omap1_mcbsp_pdata[] = { +#ifdef CONFIG_ARCH_OMAP730 + { + .virt_base = io_p2v(OMAP730_MCBSP1_BASE), + .dma_rx_sync = OMAP_DMA_MCBSP1_RX, + .dma_tx_sync = OMAP_DMA_MCBSP1_TX, + .rx_irq = INT_730_McBSP1RX, + .tx_irq = INT_730_McBSP1TX, + .ops = &omap1_mcbsp_ops, + }, + { + .virt_base = io_p2v(OMAP730_MCBSP2_BASE), + .dma_rx_sync = OMAP_DMA_MCBSP3_RX, + .dma_tx_sync = OMAP_DMA_MCBSP3_TX, + .rx_irq = INT_730_McBSP2RX, + .tx_irq = INT_730_McBSP2TX + .ops = &omap1_mcbsp_ops, + }, +#endif +#ifdef CONFIG_ARCH_OMAP15XX + { + .virt_base = OMAP1510_MCBSP1_BASE, + .dma_rx_sync = OMAP_DMA_MCBSP1_RX, + .dma_tx_sync = OMAP_DMA_MCBSP1_TX, + .rx_irq = INT_McBSP1RX, + .tx_irq = INT_McBSP1TX, + .ops = &omap1_mcbsp_ops, + .clocks = { "dsp_ck", "api_ck", "dspxor_ck" }, + }, + { + .virt_base = io_p2v(OMAP1510_MCBSP2_BASE), + .dma_rx_sync = OMAP_DMA_MCBSP2_RX, + .dma_tx_sync = OMAP_DMA_MCBSP2_TX, + .rx_irq = INT_1510_SPI_RX, + .tx_irq = INT_1510_SPI_TX, + .ops = &omap1_mcbsp_ops, + }, + { + .virt_base = OMAP1510_MCBSP3_BASE, + .dma_rx_sync = OMAP_DMA_MCBSP3_RX, + .dma_tx_sync = OMAP_DMA_MCBSP3_TX, + .rx_irq = INT_McBSP3RX, + .tx_irq = INT_McBSP3TX, + .ops = &omap1_mcbsp_ops, + .clocks = { "dsp_ck", "api_ck", "dspxor_ck" }, + }, +#endif +#ifdef CONFIG_ARCH_OMAP16XX + { + .virt_base = OMAP1610_MCBSP1_BASE, + .dma_rx_sync = OMAP_DMA_MCBSP1_RX, + .dma_tx_sync = OMAP_DMA_MCBSP1_TX, + .rx_irq = INT_McBSP1RX, + .tx_irq = INT_McBSP1TX, + .ops = &omap1_mcbsp_ops, + .clocks = { "dsp_ck", "api_ck", "dspxor_ck" }, + }, + { + .virt_base = io_p2v(OMAP1610_MCBSP2_BASE), + .dma_rx_sync = OMAP_DMA_MCBSP2_RX, + .dma_tx_sync = OMAP_DMA_MCBSP2_TX, + .rx_irq = INT_1610_McBSP2_RX, + .tx_irq = INT_1610_McBSP2_TX, + .ops = &omap1_mcbsp_ops, + }, + { + .virt_base = OMAP1610_MCBSP3_BASE, + .dma_rx_sync = OMAP_DMA_MCBSP3_RX, + .dma_tx_sync = OMAP_DMA_MCBSP3_TX, + .rx_irq = INT_McBSP3RX, + .tx_irq = INT_McBSP3TX, + .ops = &omap1_mcbsp_ops, + .clocks = { "dsp_ck", "api_ck", "dspxor_ck" }, + }, +#endif +}; +#define mcbsp_count ARRAY_SIZE(omap1_mcbsp_pdata) + +int __init omap1_mcbsp_init(void) +{ + omap_mcbsp_register_board_cfg(omap1_mcbsp_pdata, mcbsp_count); + + return omap_mcbsp_init(); +} +arch_initcall(omap1_mcbsp_init); -- 1.5.5.1.67.gbdb8.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html