3  * Driver for sunxi SD/MMC host controllers
21 #include <linux/mmc/card.h>
22 #include <linux/mmc/core.h>
23 #include <linux/mmc/host.h>
24 #include <linux/mmc/mmc.h>
25 #include <linux/mmc/sd.h>
26 #include <linux/mmc/sdio.h>
27 #include <linux/mmc/slot-gpio.h>
259 	 * a mode switch in the clock controller, or the mmc controller
271 	struct mmc_host	*mmc;  member
317 		dev_err(mmc_dev(host->mmc), "fatal err reset timeout\n");  in sunxi_mmc_reset_host()
404 	dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,  in sunxi_mmc_map_dma()
407 		dev_err(mmc_dev(host->mmc), "dma_map_sg failed\n");  in sunxi_mmc_map_dma()
413 			dev_err(mmc_dev(host->mmc),  in sunxi_mmc_map_dma()
472 		dev_err(mmc_dev(host->mmc), "send stop command failed\n");  in sunxi_mmc_send_manual_stop()
488 	/* For some cmds timeout is normal with sd/mmc cards */  in sunxi_mmc_dump_errinfo()
494 	dev_dbg(mmc_dev(host->mmc),  in sunxi_mmc_dump_errinfo()
496 		host->mmc->index, cmd->opcode,  in sunxi_mmc_dump_errinfo()
555 		dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,  in sunxi_mmc_finalize_request()
582 	dev_dbg(mmc_dev(host->mmc), "irq: rq %p mi %08x idi %08x\n",  in sunxi_mmc_irq()
617 		mmc_request_done(host->mmc, mrq);  in sunxi_mmc_irq()
620 		mmc_signal_sdio_irq(host->mmc);  in sunxi_mmc_irq()
636 		dev_err(mmc_dev(host->mmc), "no request for manual stop\n");  in sunxi_mmc_handle_manual_stop()
640 	dev_err(mmc_dev(host->mmc), "data error, sending stop command\n");  in sunxi_mmc_handle_manual_stop()
656 	mmc_request_done(host->mmc, mrq);  in sunxi_mmc_handle_manual_stop()
666 	dev_dbg(mmc_dev(host->mmc), "%sabling the clock\n",  in sunxi_mmc_oclk_onoff()
691 		dev_err(mmc_dev(host->mmc), "fatal err update clk timeout\n");  in sunxi_mmc_oclk_onoff()
750 		dev_dbg(mmc_dev(host->mmc), "Invalid clock... returning\n");  in sunxi_mmc_clk_set_phase()
763 	struct mmc_host *mmc = host->mmc;  in sunxi_mmc_clk_set_rate()  local
773 	mmc->actual_clock = 0;  in sunxi_mmc_clk_set_rate()
783 	 * We currently only support the standard MMC DDR52 mode.  in sunxi_mmc_clk_set_rate()
797 			dev_err(mmc_dev(mmc),  in sunxi_mmc_clk_set_rate()
805 		dev_err(mmc_dev(mmc), "error rounding clk to %d: %ld\n",  in sunxi_mmc_clk_set_rate()
809 	dev_dbg(mmc_dev(mmc), "setting clk to %d, rounded %ld\n",  in sunxi_mmc_clk_set_rate()
815 		dev_err(mmc_dev(mmc), "error setting clk to %ld: %d\n",  in sunxi_mmc_clk_set_rate()
864 	mmc->actual_clock = rate;  in sunxi_mmc_clk_set_rate()
905 	struct mmc_host *mmc = host->mmc;  in sunxi_mmc_card_power()  local
909 		dev_dbg(mmc_dev(mmc), "Powering card up\n");  in sunxi_mmc_card_power()
911 		if (!IS_ERR(mmc->supply.vmmc)) {  in sunxi_mmc_card_power()
912 			host->ferror = mmc_regulator_set_ocr(mmc,  in sunxi_mmc_card_power()
913 							     mmc->supply.vmmc,  in sunxi_mmc_card_power()
919 		if (!IS_ERR(mmc->supply.vqmmc)) {  in sunxi_mmc_card_power()
920 			host->ferror = regulator_enable(mmc->supply.vqmmc);  in sunxi_mmc_card_power()
922 				dev_err(mmc_dev(mmc),  in sunxi_mmc_card_power()
931 		dev_dbg(mmc_dev(mmc), "Powering card off\n");  in sunxi_mmc_card_power()
933 		if (!IS_ERR(mmc->supply.vmmc))  in sunxi_mmc_card_power()
934 			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);  in sunxi_mmc_card_power()
936 		if (!IS_ERR(mmc->supply.vqmmc) && host->vqmmc_enabled)  in sunxi_mmc_card_power()
937 			regulator_disable(mmc->supply.vqmmc);  in sunxi_mmc_card_power()
943 		dev_dbg(mmc_dev(mmc), "Ignoring unknown card power state\n");  in sunxi_mmc_card_power()
948 static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)  in sunxi_mmc_set_ios()  argument
950 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_set_ios()
957 static int sunxi_mmc_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)  in sunxi_mmc_volt_switch()  argument
962 	if (!IS_ERR(mmc->supply.vqmmc)) {  in sunxi_mmc_volt_switch()
963 		ret = mmc_regulator_set_vqmmc(mmc, ios);  in sunxi_mmc_volt_switch()
968 	if (mmc->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330)  in sunxi_mmc_volt_switch()
974 static void sunxi_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)  in sunxi_mmc_enable_sdio_irq()  argument
976 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_enable_sdio_irq()
997 		pm_runtime_put_noidle(host->mmc->parent);  in sunxi_mmc_enable_sdio_irq()
1000 static void sunxi_mmc_hw_reset(struct mmc_host *mmc)  in sunxi_mmc_hw_reset()  argument
1002 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_hw_reset()
1009 static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)  in sunxi_mmc_request()  argument
1011 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_request()
1023 		mmc_request_done(mmc, mrq);  in sunxi_mmc_request()
1030 			dev_err(mmc_dev(mmc), "map DMA failed\n");  in sunxi_mmc_request()
1033 			mmc_request_done(mmc, mrq);  in sunxi_mmc_request()
1071 	dev_dbg(mmc_dev(mmc), "cmd %d(%08x) arg %x ie 0x%08x len %d\n",  in sunxi_mmc_request()
1081 			dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len,  in sunxi_mmc_request()
1084 		dev_err(mmc_dev(mmc), "request already pending\n");  in sunxi_mmc_request()
1086 		mmc_request_done(mmc, mrq);  in sunxi_mmc_request()
1105 static int sunxi_mmc_card_busy(struct mmc_host *mmc)  in sunxi_mmc_card_busy()  argument
1107 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_card_busy()
1211 	{ .compatible = "allwinner,sun4i-a10-mmc", .data = &sun4i_a10_cfg },
1212 	{ .compatible = "allwinner,sun5i-a13-mmc", .data = &sun5i_a13_cfg },
1213 	{ .compatible = "allwinner,sun7i-a20-mmc", .data = &sun7i_a20_cfg },
1215 	{ .compatible = "allwinner,sun9i-a80-mmc", .data = &sun9i_a80_cfg },
1216 	{ .compatible = "allwinner,sun20i-d1-mmc", .data = &sun20i_d1_cfg },
1217 	{ .compatible = "allwinner,sun50i-a64-mmc", .data = &sun50i_a64_cfg },
1219 	{ .compatible = "allwinner,sun50i-a100-mmc", .data = &sun20i_d1_cfg },
1221 	{ .compatible = "allwinner,sun50i-h616-mmc", .data = &sun50i_h616_cfg },
1233 			dev_err(host->dev, "Couldn't reset the MMC controller (%d)\n",  in sunxi_mmc_enable()
1247 		dev_err(host->dev, "Enable mmc clk err %d\n", ret);  in sunxi_mmc_enable()
1309 	ret = mmc_regulator_get_supply(host->mmc);  in sunxi_mmc_resource_request()
1323 	host->clk_mmc = devm_clk_get(&pdev->dev, "mmc");  in sunxi_mmc_resource_request()
1325 		dev_err(&pdev->dev, "Could not get mmc clock\n");  in sunxi_mmc_resource_request()
1359 			sunxi_mmc_handle_manual_stop, 0, "sunxi-mmc", host);  in sunxi_mmc_resource_request()
1369 	struct mmc_host *mmc;  in sunxi_mmc_probe()  local
1372 	mmc = mmc_alloc_host(sizeof(struct sunxi_mmc_host), &pdev->dev);  in sunxi_mmc_probe()
1373 	if (!mmc) {  in sunxi_mmc_probe()
1374 		dev_err(&pdev->dev, "mmc alloc host failed\n");  in sunxi_mmc_probe()
1377 	platform_set_drvdata(pdev, mmc);  in sunxi_mmc_probe()
1379 	host = mmc_priv(mmc);  in sunxi_mmc_probe()
1381 	host->mmc = mmc;  in sunxi_mmc_probe()
1410 			dev_warn(&pdev->dev, "MMC clk timing mode unknown\n");  in sunxi_mmc_probe()
1420 	mmc->ops		= &sunxi_mmc_ops;  in sunxi_mmc_probe()
1421 	mmc->max_blk_count	= 8192;  in sunxi_mmc_probe()
1422 	mmc->max_blk_size	= 4096;  in sunxi_mmc_probe()
1423 	mmc->max_segs		= PAGE_SIZE / sizeof(struct sunxi_idma_des);  in sunxi_mmc_probe()
1424 	mmc->max_seg_size	= (1 << host->cfg->idma_des_size_bits);  in sunxi_mmc_probe()
1425 	mmc->max_req_size	= mmc->max_seg_size * mmc->max_segs;  in sunxi_mmc_probe()
1427 	mmc->f_min		=   400000;  in sunxi_mmc_probe()
1428 	mmc->f_max		= 52000000;  in sunxi_mmc_probe()
1429 	mmc->caps	       |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |  in sunxi_mmc_probe()
1442 		mmc->caps      |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;  in sunxi_mmc_probe()
1444 	ret = mmc_of_parse(mmc);  in sunxi_mmc_probe()
1455 		mmc->caps &= ~(MMC_CAP_3_3V_DDR | MMC_CAP_1_8V_DDR |  in sunxi_mmc_probe()
1457 		mmc->caps2 &= ~MMC_CAP2_HS200;  in sunxi_mmc_probe()
1461 	mmc->caps2 &= ~MMC_CAP2_HS400;  in sunxi_mmc_probe()
1472 	ret = mmc_add_host(mmc);  in sunxi_mmc_probe()
1477 		 mmc->max_req_size >> 10,  in sunxi_mmc_probe()
1485 	mmc_free_host(mmc);  in sunxi_mmc_probe()
1491 	struct mmc_host	*mmc = platform_get_drvdata(pdev);  in sunxi_mmc_remove()  local
1492 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_remove()
1494 	mmc_remove_host(mmc);  in sunxi_mmc_remove()
1501 	mmc_free_host(mmc);  in sunxi_mmc_remove()
1507 	struct mmc_host	*mmc = dev_get_drvdata(dev);  in sunxi_mmc_runtime_resume()  local
1508 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_runtime_resume()
1516 	sunxi_mmc_set_bus_width(host, mmc->ios.bus_width);  in sunxi_mmc_runtime_resume()
1517 	sunxi_mmc_set_clk(host, &mmc->ios);  in sunxi_mmc_runtime_resume()
1525 	struct mmc_host	*mmc = dev_get_drvdata(dev);  in sunxi_mmc_runtime_suspend()  local
1526 	struct sunxi_mmc_host *host = mmc_priv(mmc);  in sunxi_mmc_runtime_suspend()
1551 		.name	= "sunxi-mmc",
1561 MODULE_DESCRIPTION("Allwinner's SD/MMC Card Controller Driver");
1564 MODULE_ALIAS("platform:sunxi-mmc");