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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5d7b8467e1
This will configure the platform data for the PL011, PL022 and PL180 (derivate) PrimeCells found in the Ux500 to use DMA with the generic DMA engine for DMA40. Signed-off-by: Per Forlin <per.forlin@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* Author: Hanumath Prasad <ulf.hansson@stericsson.com>
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* License terms: GNU General Public License (GPL) version 2
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*/
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#include <linux/amba/mmci.h>
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#include <linux/mmc/host.h>
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#include <linux/gpio.h>
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#include <plat/pincfg.h>
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#include <mach/db5500-regs.h>
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#include <plat/ste_dma40.h>
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#include "pins-db5500.h"
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#include "devices-db5500.h"
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#include "ste-dma40-db5500.h"
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static pin_cfg_t u5500_sdi_pins[] = {
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/* SDI0 (POP eMMC) */
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GPIO5_MC0_DAT0 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO6_MC0_DAT1 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO7_MC0_DAT2 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO8_MC0_DAT3 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO9_MC0_DAT4 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO10_MC0_DAT5 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO11_MC0_DAT6 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO12_MC0_DAT7 | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO13_MC0_CMD | PIN_DIR_INPUT | PIN_PULL_UP,
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GPIO14_MC0_CLK | PIN_DIR_OUTPUT | PIN_VAL_LOW,
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};
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#ifdef CONFIG_STE_DMA40
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struct stedma40_chan_cfg u5500_sdi0_dma_cfg_rx = {
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.mode = STEDMA40_MODE_LOGICAL,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.src_dev_type = DB5500_DMA_DEV24_SDMMC0_RX,
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.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
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.src_info.data_width = STEDMA40_WORD_WIDTH,
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.dst_info.data_width = STEDMA40_WORD_WIDTH,
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};
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static struct stedma40_chan_cfg u5500_sdi0_dma_cfg_tx = {
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.mode = STEDMA40_MODE_LOGICAL,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.src_dev_type = STEDMA40_DEV_SRC_MEMORY,
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.dst_dev_type = DB5500_DMA_DEV24_SDMMC0_TX,
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.src_info.data_width = STEDMA40_WORD_WIDTH,
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.dst_info.data_width = STEDMA40_WORD_WIDTH,
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};
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#endif
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static struct mmci_platform_data u5500_sdi0_data = {
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.ocr_mask = MMC_VDD_165_195,
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.f_max = 50000000,
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.capabilities = MMC_CAP_4_BIT_DATA |
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MMC_CAP_8_BIT_DATA |
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MMC_CAP_MMC_HIGHSPEED,
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.gpio_cd = -1,
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.gpio_wp = -1,
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#ifdef CONFIG_STE_DMA40
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.dma_filter = stedma40_filter,
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.dma_rx_param = &u5500_sdi0_dma_cfg_rx,
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.dma_tx_param = &u5500_sdi0_dma_cfg_tx,
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#endif
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};
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void __init u5500_sdi_init(void)
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{
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nmk_config_pins(u5500_sdi_pins, ARRAY_SIZE(u5500_sdi_pins));
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db5500_add_sdi0(&u5500_sdi0_data);
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}
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