1 // SPDX-License-Identifier: GPL-2.0-only
3  * sdhci-brcmstb.c Support for SDHCI on Broadcom BRCMSTB SoC's
15 #include "sdhci-cqhci.h"
16 #include "sdhci-pltfm.h"
59 	/* Reset will clear this, so re-enable it */  in brcmstb_reset()
60 	if (priv->flags & BRCMSTB_PRIV_FLAGS_GATE_CLOCK)  in brcmstb_reset()
70 	dev_dbg(mmc_dev(mmc), "%s(): Setting HS400-Enhanced-Strobe mode\n",  in sdhci_brcmstb_hs400es()
72 	reg = readl(host->ioaddr + SDHCI_VENDOR);  in sdhci_brcmstb_hs400es()
73 	if (ios->enhanced_strobe)  in sdhci_brcmstb_hs400es()
77 	writel(reg, host->ioaddr + SDHCI_VENDOR);  in sdhci_brcmstb_hs400es()
84 	host->mmc->actual_clock = 0;  in sdhci_brcmstb_set_clock()
86 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);  in sdhci_brcmstb_set_clock()
100 	dev_dbg(mmc_dev(host->mmc), "%s: Setting UHS signaling for %d timing\n",  in sdhci_brcmstb_set_uhs_signaling()
120 		ctrl_2 |= SDHCI_CTRL_HS400; /* Non-standard */  in sdhci_brcmstb_set_uhs_signaling()
152 	.reset = sdhci_reset,
159 	.reset = brcmstb_reset,
181 	{ .compatible = "brcm,bcm7425-sdhci", .data = &match_priv_7425 },
182 	{ .compatible = "brcm,bcm7445-sdhci", .data = &match_priv_7445 },
183 	{ .compatible = "brcm,bcm7216-sdhci", .data = &match_priv_7216 },
195 	cqhci_irq(host->mmc, intmask, cmd_error, data_error);  in sdhci_brcmstb_cqhci_irq()
207 	if ((priv->flags & BRCMSTB_PRIV_FLAGS_HAS_CQE) == 0)  in sdhci_brcmstb_add_host()
210 	dev_dbg(mmc_dev(host->mmc), "CQE is enabled\n");  in sdhci_brcmstb_add_host()
211 	host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;  in sdhci_brcmstb_add_host()
216 	cq_host = devm_kzalloc(mmc_dev(host->mmc),  in sdhci_brcmstb_add_host()
219 		ret = -ENOMEM;  in sdhci_brcmstb_add_host()
223 	cq_host->mmio = host->ioaddr + SDHCI_ARASAN_CQE_BASE_ADDR;  in sdhci_brcmstb_add_host()
224 	cq_host->ops = &sdhci_brcmstb_cqhci_ops;  in sdhci_brcmstb_add_host()
226 	dma64 = host->flags & SDHCI_USE_64_BIT_DMA;  in sdhci_brcmstb_add_host()
228 		dev_dbg(mmc_dev(host->mmc), "Using 64 bit DMA\n");  in sdhci_brcmstb_add_host()
229 		cq_host->caps |= CQHCI_TASK_DESC_SZ_128;  in sdhci_brcmstb_add_host()
232 	ret = cqhci_init(cq_host, host->mmc, dma64);  in sdhci_brcmstb_add_host()
259 	match = of_match_node(sdhci_brcm_of_match, pdev->dev.of_node);  in sdhci_brcmstb_probe()
260 	match_priv = match->data;  in sdhci_brcmstb_probe()
262 	dev_dbg(&pdev->dev, "Probe found match for %s\n",  match->compatible);  in sdhci_brcmstb_probe()
264 	clk = devm_clk_get_optional(&pdev->dev, NULL);  in sdhci_brcmstb_probe()
266 		return dev_err_probe(&pdev->dev, PTR_ERR(clk),  in sdhci_brcmstb_probe()
274 	brcmstb_pdata.ops = match_priv->ops;  in sdhci_brcmstb_probe()
284 	if (device_property_read_bool(&pdev->dev, "supports-cqe")) {  in sdhci_brcmstb_probe()
285 		priv->flags |= BRCMSTB_PRIV_FLAGS_HAS_CQE;  in sdhci_brcmstb_probe()
286 		match_priv->ops->irq = sdhci_brcmstb_cqhci_irq;  in sdhci_brcmstb_probe()
289 	/* Map in the non-standard CFG registers */  in sdhci_brcmstb_probe()
291 	priv->cfg_regs = devm_ioremap_resource(&pdev->dev, iomem);  in sdhci_brcmstb_probe()
292 	if (IS_ERR(priv->cfg_regs)) {  in sdhci_brcmstb_probe()
293 		res = PTR_ERR(priv->cfg_regs);  in sdhci_brcmstb_probe()
298 	res = mmc_of_parse(host->mmc);  in sdhci_brcmstb_probe()
304 	 * voltage switch so only enable it for non-removable devices.  in sdhci_brcmstb_probe()
306 	if ((match_priv->flags & BRCMSTB_MATCH_FLAGS_HAS_CLOCK_GATE) &&  in sdhci_brcmstb_probe()
307 	    (host->mmc->caps & MMC_CAP_NONREMOVABLE))  in sdhci_brcmstb_probe()
308 		priv->flags |= BRCMSTB_PRIV_FLAGS_GATE_CLOCK;  in sdhci_brcmstb_probe()
314 	if (match_priv->hs400es &&  in sdhci_brcmstb_probe()
315 	    (host->mmc->caps2 & MMC_CAP2_HS400_ES))  in sdhci_brcmstb_probe()
316 		host->mmc_host_ops.hs400_enhanced_strobe = match_priv->hs400es;  in sdhci_brcmstb_probe()
323 	host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);  in sdhci_brcmstb_probe()
324 	if (match_priv->flags & BRCMSTB_MATCH_FLAGS_NO_64BIT)  in sdhci_brcmstb_probe()
325 		host->caps &= ~SDHCI_CAN_64BIT;  in sdhci_brcmstb_probe()
326 	host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);  in sdhci_brcmstb_probe()
327 	host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 |  in sdhci_brcmstb_probe()
329 	host->quirks |= SDHCI_QUIRK_MISSING_CAPS;  in sdhci_brcmstb_probe()
331 	if (match_priv->flags & BRCMSTB_MATCH_FLAGS_BROKEN_TIMEOUT)  in sdhci_brcmstb_probe()
332 		host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;  in sdhci_brcmstb_probe()
338 	pltfm_host->clk = clk;  in sdhci_brcmstb_probe()
350 	sdhci_pltfm_suspend(&pdev->dev);  in sdhci_brcmstb_shutdown()
357 		.name	= "sdhci-brcmstb",
369 MODULE_DESCRIPTION("SDHCI driver for Broadcom BRCMSTB SoCs");