1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/platform_data/mmc-esdhc-mcf.h>
13 #include "sdhci-pltfm.h"
14 #include "sdhci-esdhc.h"
49 	void __iomem *base = host->ioaddr + (reg & ~3);  in esdhc_clrset_be()
62  * Note: mcf is big-endian, single bytes need to be accessed at big endian
67 	void __iomem *base = host->ioaddr + (reg & ~3);  in esdhc_mcf_writeb_be()
74 		u8 tmp = readb(host->ioaddr + SDHCI_HOST_CONTROL + 1);  in esdhc_mcf_writeb_be()
85 		writel(host_ctrl, host->ioaddr + SDHCI_HOST_CONTROL);  in esdhc_mcf_writeb_be()
97 	void __iomem *base = host->ioaddr + (reg & ~3);  in esdhc_mcf_writew_be()
103 		mcf_data->aside = val;  in esdhc_mcf_writew_be()
106 		if (host->cmd->opcode == MMC_STOP_TRANSMISSION)  in esdhc_mcf_writew_be()
113 		writel(val << 16 | mcf_data->aside,  in esdhc_mcf_writew_be()
114 		       host->ioaddr + SDHCI_TRANSFER_MODE);  in esdhc_mcf_writew_be()
123 	writel(val, host->ioaddr + reg);  in esdhc_mcf_writel_be()
129 		u8 __iomem *base = host->ioaddr + (reg & ~3);  in esdhc_mcf_readb_be()
140 	return readb(host->ioaddr + (reg ^ 0x3));  in esdhc_mcf_readb_be()
146 	 * For SDHCI_HOST_VERSION, sdhci specs defines 0xFE,  in esdhc_mcf_readw_be()
150 		reg -= 2;  in esdhc_mcf_readw_be()
152 	return readw(host->ioaddr + (reg ^ 0x2));  in esdhc_mcf_readw_be()
159 	val = readl(host->ioaddr + reg);  in esdhc_mcf_readl_be()
199 			mcf_data->current_bus_width, SDHCI_HOST_CONTROL);  in esdhc_mcf_reset()
201 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in esdhc_mcf_reset()
202 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in esdhc_mcf_reset()
209 	return pltfm_host->clock;  in esdhc_mcf_pltfm_get_max_clock()
216 	return pltfm_host->clock / 256 / 16;  in esdhc_mcf_pltfm_get_min_clock()
230 		host->mmc->actual_clock = 0;  in esdhc_mcf_pltfm_set_clock()
237 	 * pll -+-> / outdiv1 --> fsys  in esdhc_mcf_pltfm_set_clock()
238 	 *      +-> / outdiv3 --> eSDHC clock ---> / SDCCLKFS / DVS  in esdhc_mcf_pltfm_set_clock()
249 	fsys = pltfm_host->clock;  in esdhc_mcf_pltfm_set_clock()
259 			delta = abs(clock - finale);  in esdhc_mcf_pltfm_set_clock()
270 	 * Apply divisors and re-enable all the clocks  in esdhc_mcf_pltfm_set_clock()
272 	temp = ((sdclkfs[ri] >> 1) << 8) | ((rq - 1) << 4) |  in esdhc_mcf_pltfm_set_clock()
276 	host->mmc->actual_clock = clock;  in esdhc_mcf_pltfm_set_clock()
288 		mcf_data->current_bus_width = ESDHC_CTRL_4BITBUS;  in esdhc_mcf_pltfm_set_bus_width()
291 		mcf_data->current_bus_width = 0;  in esdhc_mcf_pltfm_set_bus_width()
296 			mcf_data->current_bus_width, SDHCI_HOST_CONTROL);  in esdhc_mcf_pltfm_set_bus_width()
305 	if (!mrq->data || !mrq->data->bytes_xfered)  in esdhc_mcf_request_done()
308 	if (mmc_get_dma_dir(mrq->data) != DMA_FROM_DEVICE)  in esdhc_mcf_request_done()
315 	sg_miter_start(&sgm, mrq->data->sg, mrq->data->sg_len,  in esdhc_mcf_request_done()
324 	mmc_request_done(host->mmc, mrq);  in esdhc_mcf_request_done()
331 	sg_copy_to_buffer(data->sg, data->sg_len,  in esdhc_mcf_copy_to_bounce_buffer()
332 			  host->bounce_buffer, length);  in esdhc_mcf_copy_to_bounce_buffer()
334 	esdhc_mcf_buffer_swap32((u32 *)host->bounce_buffer,  in esdhc_mcf_copy_to_bounce_buffer()
335 				data->blksz * data->blocks);  in esdhc_mcf_copy_to_bounce_buffer()
372 	struct device *dev = mmc_dev(host->mmc);  in esdhc_mcf_plat_init()
374 	if (!dev->platform_data) {  in esdhc_mcf_plat_init()
376 		return -EINVAL;  in esdhc_mcf_plat_init()
379 	plat_data = (struct mcf_esdhc_platform_data *)dev->platform_data;  in esdhc_mcf_plat_init()
382 	switch (plat_data->cd_type) {  in esdhc_mcf_plat_init()
386 		host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;  in esdhc_mcf_plat_init()
389 		host->mmc->caps |= MMC_CAP_NONREMOVABLE;  in esdhc_mcf_plat_init()
395 	switch (plat_data->max_bus_width) {  in esdhc_mcf_plat_init()
397 		host->mmc->caps |= MMC_CAP_4_BIT_DATA;  in esdhc_mcf_plat_init()
401 		host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;  in esdhc_mcf_plat_init()
424 	host->sdma_boundary = 0;  in sdhci_esdhc_mcf_probe()
426 	host->flags |= SDHCI_AUTO_CMD12;  in sdhci_esdhc_mcf_probe()
428 	mcf_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");  in sdhci_esdhc_mcf_probe()
429 	if (IS_ERR(mcf_data->clk_ipg)) {  in sdhci_esdhc_mcf_probe()
430 		err = PTR_ERR(mcf_data->clk_ipg);  in sdhci_esdhc_mcf_probe()
434 	mcf_data->clk_ahb = devm_clk_get(&pdev->dev, "ahb");  in sdhci_esdhc_mcf_probe()
435 	if (IS_ERR(mcf_data->clk_ahb)) {  in sdhci_esdhc_mcf_probe()
436 		err = PTR_ERR(mcf_data->clk_ahb);  in sdhci_esdhc_mcf_probe()
440 	mcf_data->clk_per = devm_clk_get(&pdev->dev, "per");  in sdhci_esdhc_mcf_probe()
441 	if (IS_ERR(mcf_data->clk_per)) {  in sdhci_esdhc_mcf_probe()
442 		err = PTR_ERR(mcf_data->clk_per);  in sdhci_esdhc_mcf_probe()
446 	pltfm_host->clk = mcf_data->clk_per;  in sdhci_esdhc_mcf_probe()
447 	pltfm_host->clock = clk_get_rate(pltfm_host->clk);  in sdhci_esdhc_mcf_probe()
448 	err = clk_prepare_enable(mcf_data->clk_per);  in sdhci_esdhc_mcf_probe()
452 	err = clk_prepare_enable(mcf_data->clk_ipg);  in sdhci_esdhc_mcf_probe()
456 	err = clk_prepare_enable(mcf_data->clk_ahb);  in sdhci_esdhc_mcf_probe()
468 	if (!host->bounce_buffer) {  in sdhci_esdhc_mcf_probe()
469 		dev_err(&pdev->dev, "bounce buffer not allocated");  in sdhci_esdhc_mcf_probe()
470 		err = -ENOMEM;  in sdhci_esdhc_mcf_probe()
483 	clk_disable_unprepare(mcf_data->clk_ahb);  in sdhci_esdhc_mcf_probe()
485 	clk_disable_unprepare(mcf_data->clk_ipg);  in sdhci_esdhc_mcf_probe()
487 	clk_disable_unprepare(mcf_data->clk_per);  in sdhci_esdhc_mcf_probe()
502 	clk_disable_unprepare(mcf_data->clk_ipg);  in sdhci_esdhc_mcf_remove()
503 	clk_disable_unprepare(mcf_data->clk_ahb);  in sdhci_esdhc_mcf_remove()
504 	clk_disable_unprepare(mcf_data->clk_per);  in sdhci_esdhc_mcf_remove()
511 		.name = "sdhci-esdhc-mcf",
520 MODULE_DESCRIPTION("SDHCI driver for Freescale ColdFire eSDHC");