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26955c07dc
Devices which utilise DMA use the same device numbers for transmitting and receiving. In this patch we encode the source and destination information into one single attribute. We can subsequently exploit the direction attribute to see which of the transfer directions are being described. This also lessens the burden on platform data. Cc: Dan Williams <djbw@fb.com> Cc: Per Forlin <per.forlin@stericsson.com> Cc: Rabin Vincent <rabin@rab.in> Acked-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
171 lines
4.1 KiB
C
171 lines
4.1 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* License terms: GNU General Public License (GPL), version 2
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*/
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#include <linux/platform_device.h>
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#include <linux/init.h>
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#include <linux/gpio.h>
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#include <linux/platform_data/pinctrl-nomadik.h>
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#include <linux/platform_data/dma-ste-dma40.h>
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#include "devices.h"
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#include "irqs.h"
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#include <linux/platform_data/asoc-ux500-msp.h>
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#include "ste-dma40-db8500.h"
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#include "board-mop500.h"
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#include "devices-db8500.h"
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#include "pins-db8500.h"
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static struct stedma40_chan_cfg msp0_dma_rx = {
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.high_priority = true,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.dev_type = DB8500_DMA_DEV31_MSP0_SLIM0_CH0,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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static struct stedma40_chan_cfg msp0_dma_tx = {
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.high_priority = true,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.dev_type = DB8500_DMA_DEV31_MSP0_SLIM0_CH0,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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struct msp_i2s_platform_data msp0_platform_data = {
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.id = MSP_I2S_0,
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.msp_i2s_dma_rx = &msp0_dma_rx,
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.msp_i2s_dma_tx = &msp0_dma_tx,
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};
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static struct stedma40_chan_cfg msp1_dma_rx = {
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.high_priority = true,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.dev_type = DB8500_DMA_DEV30_MSP3,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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static struct stedma40_chan_cfg msp1_dma_tx = {
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.high_priority = true,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.dev_type = DB8500_DMA_DEV30_MSP1,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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struct msp_i2s_platform_data msp1_platform_data = {
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.id = MSP_I2S_1,
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.msp_i2s_dma_rx = NULL,
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.msp_i2s_dma_tx = &msp1_dma_tx,
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};
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static struct stedma40_chan_cfg msp2_dma_rx = {
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.high_priority = true,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.dev_type = DB8500_DMA_DEV14_MSP2,
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/* MSP2 DMA doesn't work with PSIZE == 4 on DB8500v2 */
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.src_info.psize = STEDMA40_PSIZE_LOG_1,
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.dst_info.psize = STEDMA40_PSIZE_LOG_1,
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/* data_width is set during configuration */
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};
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static struct stedma40_chan_cfg msp2_dma_tx = {
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.high_priority = true,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.dev_type = DB8500_DMA_DEV14_MSP2,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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.use_fixed_channel = true,
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.phy_channel = 1,
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/* data_width is set during configuration */
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};
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static struct platform_device *db8500_add_msp_i2s(struct device *parent,
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int id,
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resource_size_t base, int irq,
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struct msp_i2s_platform_data *pdata)
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{
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struct platform_device *pdev;
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struct resource res[] = {
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DEFINE_RES_MEM(base, SZ_4K),
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DEFINE_RES_IRQ(irq),
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};
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pr_info("Register platform-device 'ux500-msp-i2s', id %d, irq %d\n",
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id, irq);
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pdev = platform_device_register_resndata(parent, "ux500-msp-i2s", id,
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res, ARRAY_SIZE(res),
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pdata, sizeof(*pdata));
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if (!pdev) {
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pr_err("Failed to register platform-device 'ux500-msp-i2s.%d'!\n",
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id);
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return NULL;
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}
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return pdev;
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}
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/* Platform device for ASoC MOP500 machine */
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static struct platform_device snd_soc_mop500 = {
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.name = "snd-soc-mop500",
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.id = 0,
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.dev = {
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.platform_data = NULL,
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},
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};
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struct msp_i2s_platform_data msp2_platform_data = {
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.id = MSP_I2S_2,
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.msp_i2s_dma_rx = &msp2_dma_rx,
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.msp_i2s_dma_tx = &msp2_dma_tx,
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};
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struct msp_i2s_platform_data msp3_platform_data = {
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.id = MSP_I2S_3,
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.msp_i2s_dma_rx = &msp1_dma_rx,
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.msp_i2s_dma_tx = NULL,
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};
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void mop500_audio_init(struct device *parent)
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{
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pr_info("%s: Register platform-device 'snd-soc-mop500'.\n", __func__);
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platform_device_register(&snd_soc_mop500);
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pr_info("Initialize MSP I2S-devices.\n");
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db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0,
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&msp0_platform_data);
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db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1,
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&msp1_platform_data);
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db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2,
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&msp2_platform_data);
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db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1,
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&msp3_platform_data);
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}
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