6  *  JZ4740 SD/MMC controller driver
18 #include <linux/mmc/host.h>
19 #include <linux/mmc/slot-gpio.h>
131  * The MMC core allows to prepare a mmc_request while another mmc_request
150 	struct mmc_host *mmc;  member
230 	struct device *dev = mmc_dev(host->mmc);  in jz4740_mmc_acquire_dma_channels()
241 	host->dma_tx = dma_request_chan(mmc_dev(host->mmc), "tx");  in jz4740_mmc_acquire_dma_channels()
243 		dev_err(mmc_dev(host->mmc), "Failed to get dma_tx channel\n");  in jz4740_mmc_acquire_dma_channels()
247 	host->dma_rx = dma_request_chan(mmc_dev(host->mmc), "rx");  in jz4740_mmc_acquire_dma_channels()
249 		dev_err(mmc_dev(host->mmc), "Failed to get dma_rx channel\n");  in jz4740_mmc_acquire_dma_channels()
262 		if (max_seg_size < host->mmc->max_seg_size)  in jz4740_mmc_acquire_dma_channels()
263 			host->mmc->max_seg_size = max_seg_size;  in jz4740_mmc_acquire_dma_channels()
270 		if (max_seg_size < host->mmc->max_seg_size)  in jz4740_mmc_acquire_dma_channels()
271 			host->mmc->max_seg_size = max_seg_size;  in jz4740_mmc_acquire_dma_channels()
316 		dev_err(mmc_dev(host->mmc),  in jz4740_mmc_prepare_dma_data()
357 		dev_err(mmc_dev(host->mmc),  in jz4740_mmc_start_dma_transfer()
374 static void jz4740_mmc_pre_request(struct mmc_host *mmc,  in jz4740_mmc_pre_request()  argument
377 	struct jz4740_mmc_host *host = mmc_priv(mmc);  in jz4740_mmc_pre_request()
388 static void jz4740_mmc_post_request(struct mmc_host *mmc,  in jz4740_mmc_post_request()  argument
392 	struct jz4740_mmc_host *host = mmc_priv(mmc);  in jz4740_mmc_post_request()
467 	mmc_request_done(host->mmc, req);  in jz4740_mmc_request_done()
712 			 * The JZ4780's MMC controller has integrated DMA ability  in jz4740_mmc_send_command()
859 		mmc_signal_sdio_irq(host->mmc);  in jz_mmc_irq()
894 	clk_set_rate(host->clk, host->mmc->f_max);  in jz4740_mmc_set_clock_rate()
923 static void jz4740_mmc_request(struct mmc_host *mmc, struct mmc_request *req)  in jz4740_mmc_request()  argument
925 	struct jz4740_mmc_host *host = mmc_priv(mmc);  in jz4740_mmc_request()
939 static void jz4740_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)  in jz4740_mmc_set_ios()  argument
941 	struct jz4740_mmc_host *host = mmc_priv(mmc);  in jz4740_mmc_set_ios()
950 		if (!IS_ERR(mmc->supply.vmmc))  in jz4740_mmc_set_ios()
951 			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);  in jz4740_mmc_set_ios()
956 		if (!IS_ERR(mmc->supply.vqmmc) && !host->vqmmc_enabled) {  in jz4740_mmc_set_ios()
957 			ret = regulator_enable(mmc->supply.vqmmc);  in jz4740_mmc_set_ios()
965 		if (!IS_ERR(mmc->supply.vmmc))  in jz4740_mmc_set_ios()
966 			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);  in jz4740_mmc_set_ios()
967 		if (!IS_ERR(mmc->supply.vqmmc) && host->vqmmc_enabled) {  in jz4740_mmc_set_ios()
968 			regulator_disable(mmc->supply.vqmmc);  in jz4740_mmc_set_ios()
994 static void jz4740_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)  in jz4740_mmc_enable_sdio_irq()  argument
996 	struct jz4740_mmc_host *host = mmc_priv(mmc);  in jz4740_mmc_enable_sdio_irq()
1000 static int jz4740_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)  in jz4740_voltage_switch()  argument
1005 	if (!IS_ERR(mmc->supply.vqmmc)) {  in jz4740_voltage_switch()
1006 		ret = mmc_regulator_set_vqmmc(mmc, ios);  in jz4740_voltage_switch()
1029 	{ .compatible = "ingenic,jz4740-mmc", .data = (void *) JZ_MMC_JZ4740 },
1030 	{ .compatible = "ingenic,jz4725b-mmc", .data = (void *)JZ_MMC_JZ4725B },
1031 	{ .compatible = "ingenic,jz4760-mmc", .data = (void *) JZ_MMC_JZ4760 },
1032 	{ .compatible = "ingenic,jz4775-mmc", .data = (void *) JZ_MMC_JZ4780 },
1033 	{ .compatible = "ingenic,jz4780-mmc", .data = (void *) JZ_MMC_JZ4780 },
1034 	{ .compatible = "ingenic,x1000-mmc", .data = (void *) JZ_MMC_X1000 },
1042 	struct mmc_host *mmc;  in jz4740_mmc_probe()  local
1045 	mmc = mmc_alloc_host(sizeof(struct jz4740_mmc_host), &pdev->dev);  in jz4740_mmc_probe()
1046 	if (!mmc) {  in jz4740_mmc_probe()
1047 		dev_err(&pdev->dev, "Failed to alloc mmc host structure\n");  in jz4740_mmc_probe()
1051 	host = mmc_priv(mmc);  in jz4740_mmc_probe()
1056 	ret = mmc_of_parse(mmc);  in jz4740_mmc_probe()
1062 	mmc_regulator_get_supply(mmc);  in jz4740_mmc_probe()
1070 	host->clk = devm_clk_get(&pdev->dev, "mmc");  in jz4740_mmc_probe()
1073 		dev_err(&pdev->dev, "Failed to get mmc clock\n");  in jz4740_mmc_probe()
1083 	mmc->ops = &jz4740_mmc_ops;  in jz4740_mmc_probe()
1084 	if (!mmc->f_max)  in jz4740_mmc_probe()
1085 		mmc->f_max = JZ_MMC_CLK_RATE;  in jz4740_mmc_probe()
1093 	if (host->version == JZ_MMC_JZ4760 && mmc->f_max > JZ_MMC_CLK_RATE)  in jz4740_mmc_probe()
1094 		mmc->f_max = JZ_MMC_CLK_RATE;  in jz4740_mmc_probe()
1096 	mmc->f_min = mmc->f_max / 128;  in jz4740_mmc_probe()
1097 	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;  in jz4740_mmc_probe()
1103 	mmc->max_busy_timeout = JZ_MMC_REQ_TIMEOUT_MS;  in jz4740_mmc_probe()
1105 	mmc->max_blk_size = (1 << 10) - 1;  in jz4740_mmc_probe()
1106 	mmc->max_blk_count = (1 << 15) - 1;  in jz4740_mmc_probe()
1107 	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;  in jz4740_mmc_probe()
1109 	mmc->max_segs = 128;  in jz4740_mmc_probe()
1110 	mmc->max_seg_size = mmc->max_req_size;  in jz4740_mmc_probe()
1112 	host->mmc = mmc;  in jz4740_mmc_probe()
1135 	ret = mmc_add_host(mmc);  in jz4740_mmc_probe()
1138 		dev_err(&pdev->dev, "Failed to add mmc host: %d\n", ret);  in jz4740_mmc_probe()
1141 	dev_info(&pdev->dev, "Ingenic SD/MMC card driver registered\n");  in jz4740_mmc_probe()
1145 		 (mmc->caps & MMC_CAP_8_BIT_DATA) ? 8 :  in jz4740_mmc_probe()
1146 		 ((mmc->caps & MMC_CAP_4_BIT_DATA) ? 4 : 1));  in jz4740_mmc_probe()
1156 	mmc_free_host(mmc);  in jz4740_mmc_probe()
1169 	mmc_remove_host(host->mmc);  in jz4740_mmc_remove()
1176 	mmc_free_host(host->mmc);  in jz4740_mmc_remove()
1196 		.name = "jz4740-mmc",
1205 MODULE_DESCRIPTION("JZ4740 SD/MMC controller driver");