mmc/host/sdhci-xenon.c

27 static int xenon_enable_internal_clk(struct sdhci_host *host)
32 	reg = sdhci_readl(host, SDHCI_CLOCK_CONTROL);
34 	sdhci_writel(host, reg, SDHCI_CLOCK_CONTROL);
40 		reg = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
44 			dev_err(mmc_dev(host->mmc), "Internal clock never stabilised.\n");
54 static void xenon_set_sdclk_off_idle(struct sdhci_host *host,
60 	reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
68 	sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
72 static void xenon_set_acg(struct sdhci_host *host, bool enable)
76 	reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
81 	sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
85 static void xenon_enable_sdhc(struct sdhci_host *host,
90 	reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
92 	sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
94 	host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
99 	host->mmc->caps &= ~MMC_CAP_BUS_WIDTH_TEST;
103 static void xenon_disable_sdhc(struct sdhci_host *host,
108 	reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
110 	sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
114 static void xenon_enable_sdhc_parallel_tran(struct sdhci_host *host,
119 	reg = sdhci_readl(host, XENON_SYS_EXT_OP_CTRL);
121 	sdhci_writel(host, reg, XENON_SYS_EXT_OP_CTRL);
125 static void xenon_mask_cmd_conflict_err(struct sdhci_host *host)
129 	reg = sdhci_readl(host, XENON_SYS_EXT_OP_CTRL);
131 	sdhci_writel(host, reg, XENON_SYS_EXT_OP_CTRL);
134 static void xenon_retune_setup(struct sdhci_host *host)
136 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
141 	reg = sdhci_readl(host, XENON_SLOT_RETUNING_REQ_CTRL);
143 	sdhci_writel(host, reg, XENON_SLOT_RETUNING_REQ_CTRL);
146 	reg = sdhci_readl(host, SDHCI_SIGNAL_ENABLE);
148 	sdhci_writel(host, reg, SDHCI_SIGNAL_ENABLE);
149 	reg = sdhci_readl(host, SDHCI_INT_ENABLE);
151 	sdhci_writel(host, reg, SDHCI_INT_ENABLE);
154 	host->tuning_mode = SDHCI_TUNING_MODE_1;
156 	host->tuning_count = 1 << (priv->tuning_count - 1);
163 static void xenon_reset_exit(struct sdhci_host *host,
171 	xenon_retune_setup(host);
178 	xenon_set_acg(host, false);
180 	xenon_set_sdclk_off_idle(host, sdhc_id, false);
182 	xenon_mask_cmd_conflict_err(host);
185 static void xenon_reset(struct sdhci_host *host, u8 mask)
187 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
190 	sdhci_reset(host, mask);
191 	xenon_reset_exit(host, priv->sdhc_id, mask);
198 static void xenon_set_uhs_signaling(struct sdhci_host *host,
203 	ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
204 	/* Select Bus Speed Mode for host */
221 	sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
224 static void xenon_set_power(struct sdhci_host *host, unsigned char mode,
227 	struct mmc_host *mmc = host->mmc;
228 	u8 pwr = host->pwr;
230 	sdhci_set_power_noreg(host, mode, vdd);
232 	if (host->pwr == pwr)
235 	if (host->pwr == 0)
242 static void xenon_voltage_switch(struct sdhci_host *host)
248 static unsigned int xenon_get_max_clock(struct sdhci_host *host)
250 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
253 		return sdhci_pltfm_clk_get_max_clock(host);
280 	struct sdhci_host *host = mmc_priv(mmc);
281 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
295 		host->preset_enabled = false;
296 		host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
297 		host->flags &= ~SDHCI_PV_ENABLED;
299 		reg = sdhci_readw(host, SDHCI_HOST_CONTROL2);
301 		sdhci_writew(host, reg, SDHCI_HOST_CONTROL2);
303 		host->quirks2 &= ~SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
307 	xenon_phy_adj(host, ios);
309 	if (host->clock > XENON_DEFAULT_SDCLK_FREQ)
310 		xenon_set_sdclk_off_idle(host, priv->sdhc_id, true);
316 	struct sdhci_host *host = mmc_priv(mmc);
328 	xenon_enable_internal_clk(host);
330 	xenon_soc_pad_ctrl(host, ios->signal_voltage);
349 	struct sdhci_host *host = mmc_priv(mmc);
350 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
359 	struct sdhci_host *host = mmc_priv(mmc);
361 	if (host->timing == MMC_TIMING_UHS_DDR50 ||
362 		host->timing == MMC_TIMING_MMC_DDR52)
370 	if (host->tuning_mode != SDHCI_TUNING_MODE_1)
371 		xenon_retune_setup(host);
378 	struct sdhci_host *host = mmc_priv(mmc);
379 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
391 		reg = sdhci_readl(host, XENON_SYS_CFG_INFO);
393 		sdhci_writel(host, reg, XENON_SYS_CFG_INFO);
396 		reg = sdhci_readl(host, XENON_SYS_CFG_INFO);
398 		sdhci_writel(host, reg, XENON_SYS_CFG_INFO);
402 static void xenon_replace_mmc_host_ops(struct sdhci_host *host)
404 	host->mmc_host_ops.set_ios = xenon_set_ios;
405 	host->mmc_host_ops.start_signal_voltage_switch =
407 	host->mmc_host_ops.init_card = xenon_init_card;
408 	host->mmc_host_ops.execute_tuning = xenon_execute_tuning;
409 	host->mmc_host_ops.enable_sdio_irq = xenon_enable_sdio_irq;
421 	struct sdhci_host *host = platform_get_drvdata(pdev);
422 	struct mmc_host *mmc = host->mmc;
423 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
431 		host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
435 		nr_sdhc = sdhci_readl(host, XENON_SYS_CFG_INFO);
468 			host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
469 			host->quirks2 |= SDHCI_QUIRK2_BROKEN_64_BIT_DMA;
473 	return xenon_phy_parse_params(dev, host);
476 static int xenon_sdhc_prepare(struct sdhci_host *host)
478 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
483 	xenon_enable_sdhc(host, sdhc_id);
486 	xenon_set_acg(host, true);
489 	xenon_enable_sdhc_parallel_tran(host, sdhc_id);
492 	xenon_set_sdclk_off_idle(host, sdhc_id, false);
494 	xenon_mask_cmd_conflict_err(host);
499 static void xenon_sdhc_unprepare(struct sdhci_host *host)
501 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
506 	xenon_disable_sdhc(host, sdhc_id);
513 	struct sdhci_host *host;
517 	host = sdhci_pltfm_init(pdev, &sdhci_xenon_pdata,
519 	if (IS_ERR(host))
520 		return PTR_ERR(host);
522 	pltfm_host = sdhci_priv(host);
531 	xenon_replace_mmc_host_ops(host);
556 	err = mmc_of_parse(host->mmc);
562 	xenon_set_acg(host, false);
569 	err = xenon_sdhc_prepare(host);
580 	err = sdhci_add_host(host);
593 	    host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA)
601 	xenon_sdhc_unprepare(host);
613 	struct sdhci_host *host = platform_get_drvdata(pdev);
614 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
621 	sdhci_remove_host(host, 0);
623 	xenon_sdhc_unprepare(host);
633 	struct sdhci_host *host = dev_get_drvdata(dev);
634 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
648 	struct sdhci_host *host = dev_get_drvdata(dev);
649 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
653 	ret = sdhci_runtime_suspend_host(host);
657 	if (host->tuning_mode != SDHCI_TUNING_MODE_3)
658 		mmc_retune_needed(host->mmc);
672 	struct sdhci_host *host = dev_get_drvdata(dev);
673 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
684 		ret = xenon_sdhc_prepare(host);
690 	ret = sdhci_runtime_resume_host(host, 0);