1 // SPDX-License-Identifier: GPL-2.0-or-later
11 #include <linux/mmc/host.h>
20 #include "dw_mmc-pltfm.h"
106 	ret = clk_set_rate(host->ciu_clk, ios->clock);  in dw_mci_k3_set_ios()
108 		dev_warn(host->dev, "failed to set rate %uHz\n", ios->clock);  in dw_mci_k3_set_ios()
110 	host->bus_hz = clk_get_rate(host->ciu_clk);  in dw_mci_k3_set_ios()
121 	priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL);  in dw_mci_hi6220_parse_dt()
123 		return -ENOMEM;  in dw_mci_hi6220_parse_dt()
125 	priv->reg = syscon_regmap_lookup_by_phandle(host->dev->of_node,  in dw_mci_hi6220_parse_dt()
126 					 "hisilicon,peripheral-syscon");  in dw_mci_hi6220_parse_dt()
127 	if (IS_ERR(priv->reg))  in dw_mci_hi6220_parse_dt()
128 		priv->reg = NULL;  in dw_mci_hi6220_parse_dt()
130 	priv->ctrl_id = of_alias_get_id(host->dev->of_node, "mshc");  in dw_mci_hi6220_parse_dt()
131 	if (priv->ctrl_id < 0)  in dw_mci_hi6220_parse_dt()
132 		priv->ctrl_id = 0;  in dw_mci_hi6220_parse_dt()
134 	if (priv->ctrl_id >= TIMING_MODE)  in dw_mci_hi6220_parse_dt()
135 		return -EINVAL;  in dw_mci_hi6220_parse_dt()
137 	host->priv = priv;  in dw_mci_hi6220_parse_dt()
141 static int dw_mci_hi6220_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)  in dw_mci_hi6220_switch_voltage()  argument
143 	struct dw_mci_slot *slot = mmc_priv(mmc);  in dw_mci_hi6220_switch_voltage()  local
149 	host = slot->host;  in dw_mci_hi6220_switch_voltage()
150 	priv = host->priv;  in dw_mci_hi6220_switch_voltage()
152 	if (!priv || !priv->reg)  in dw_mci_hi6220_switch_voltage()
155 	if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {  in dw_mci_hi6220_switch_voltage()
156 		ret = regmap_update_bits(priv->reg, AO_SCTRL_CTRL3,  in dw_mci_hi6220_switch_voltage()
160 	} else if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180) {  in dw_mci_hi6220_switch_voltage()
161 		ret = regmap_update_bits(priv->reg, AO_SCTRL_CTRL3,  in dw_mci_hi6220_switch_voltage()
166 		dev_dbg(host->dev, "voltage not supported\n");  in dw_mci_hi6220_switch_voltage()
167 		return -EINVAL;  in dw_mci_hi6220_switch_voltage()
171 		dev_dbg(host->dev, "switch voltage failed\n");  in dw_mci_hi6220_switch_voltage()
175 	if (IS_ERR_OR_NULL(mmc->supply.vqmmc))  in dw_mci_hi6220_switch_voltage()
178 	ret = regulator_set_voltage(mmc->supply.vqmmc, min_uv, max_uv);  in dw_mci_hi6220_switch_voltage()
180 		dev_dbg(host->dev, "Regulator set error %d: %d - %d\n",  in dw_mci_hi6220_switch_voltage()
193 	clock = (ios->clock <= 25000000) ? 25000000 : ios->clock;  in dw_mci_hi6220_set_ios()
195 	ret = clk_set_rate(host->biu_clk, clock);  in dw_mci_hi6220_set_ios()
197 		dev_warn(host->dev, "failed to set rate %uHz\n", clock);  in dw_mci_hi6220_set_ios()
199 	host->bus_hz = clk_get_rate(host->biu_clk);  in dw_mci_hi6220_set_ios()
202 static int dw_mci_hi6220_execute_tuning(struct dw_mci_slot *slot, u32 opcode)  in dw_mci_hi6220_execute_tuning()  argument
227 	priv = host->priv;  in dw_mci_hs_set_timing()
228 	ctrl_id = priv->ctrl_id;  in dw_mci_hs_set_timing()
232 	if (smpl_phase == -1)  in dw_mci_hs_set_timing()
272 	dw_mci_hs_set_timing(host, MMC_TIMING_LEGACY, -1);  in dw_mci_hi3660_init()
273 	host->bus_hz /= (GENCLK_DIV + 1);  in dw_mci_hi3660_init()
284 	priv = host->priv;  in dw_mci_set_sel18()
287 	ret = regmap_update_bits(priv->reg, SOC_SCTRL_SCPERCTRL5,  in dw_mci_set_sel18()
290 		dev_err(host->dev, "sel18 %u error\n", val);  in dw_mci_set_sel18()
302 	struct k3_priv *priv = host->priv;  in dw_mci_hi3660_set_ios()
304 	if (!ios->clock || ios->clock == priv->cur_speed)  in dw_mci_hi3660_set_ios()
307 	wanted = ios->clock * (GENCLK_DIV + 1);  in dw_mci_hi3660_set_ios()
308 	ret = clk_set_rate(host->ciu_clk, wanted);  in dw_mci_hi3660_set_ios()
310 		dev_err(host->dev, "failed to set rate %luHz\n", wanted);  in dw_mci_hi3660_set_ios()
313 	actual = clk_get_rate(host->ciu_clk);  in dw_mci_hi3660_set_ios()
315 	dw_mci_hs_set_timing(host, ios->timing, -1);  in dw_mci_hi3660_set_ios()
316 	host->bus_hz = actual / (GENCLK_DIV + 1);  in dw_mci_hi3660_set_ios()
317 	host->current_speed = 0;  in dw_mci_hi3660_set_ios()
318 	priv->cur_speed = host->bus_hz;  in dw_mci_hi3660_set_ios()
332 		return -EIO;  in dw_mci_get_best_clksmpl()
337 	i = ffs(sample_flag) - 1;  in dw_mci_get_best_clksmpl()
346 		len = ffs(~v) - 1;  in dw_mci_get_best_clksmpl()
353 		interval = ffs(v >> len) - 1;  in dw_mci_get_best_clksmpl()
367 static int dw_mci_hi3660_execute_tuning(struct dw_mci_slot *slot, u32 opcode)  in dw_mci_hi3660_execute_tuning()  argument
370 	struct dw_mci *host = slot->host;  in dw_mci_hi3660_execute_tuning()
371 	struct mmc_host *mmc = slot->mmc;  in dw_mci_hi3660_execute_tuning()  local
380 		dw_mci_hs_set_timing(host, mmc->ios.timing, smpl_phase);  in dw_mci_hi3660_execute_tuning()
382 		if (!mmc_send_tuning(mmc, opcode, NULL))  in dw_mci_hi3660_execute_tuning()
390 		dev_err(host->dev, "All phases bad!\n");  in dw_mci_hi3660_execute_tuning()
391 		return -EIO;  in dw_mci_hi3660_execute_tuning()
394 	dw_mci_hs_set_timing(host, mmc->ios.timing, best_clksmpl);  in dw_mci_hi3660_execute_tuning()
396 	dev_info(host->dev, "tuning ok best_clksmpl %u tuning_sample_flag %x\n",  in dw_mci_hi3660_execute_tuning()
401 static int dw_mci_hi3660_switch_voltage(struct mmc_host *mmc,  in dw_mci_hi3660_switch_voltage()  argument
405 	struct dw_mci_slot *slot = mmc_priv(mmc);  in dw_mci_hi3660_switch_voltage()  local
409 	host = slot->host;  in dw_mci_hi3660_switch_voltage()
410 	priv = host->priv;  in dw_mci_hi3660_switch_voltage()
412 	if (!priv || !priv->reg)  in dw_mci_hi3660_switch_voltage()
415 	if (priv->ctrl_id == DWMMC_SDIO_ID)  in dw_mci_hi3660_switch_voltage()
418 	if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330)  in dw_mci_hi3660_switch_voltage()
420 	else if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180)  in dw_mci_hi3660_switch_voltage()
425 	if (!IS_ERR(mmc->supply.vqmmc)) {  in dw_mci_hi3660_switch_voltage()
426 		ret = mmc_regulator_set_vqmmc(mmc, ios);  in dw_mci_hi3660_switch_voltage()
428 			dev_err(host->dev, "Regulator set error %d\n", ret);  in dw_mci_hi3660_switch_voltage()
445 	{ .compatible = "hisilicon,hi3660-dw-mshc", .data = &hi3660_data, },
446 	{ .compatible = "hisilicon,hi4511-dw-mshc", .data = &k3_drv_data, },
447 	{ .compatible = "hisilicon,hi6220-dw-mshc", .data = &hi6220_data, },
457 	match = of_match_node(dw_mci_k3_match, pdev->dev.of_node);  in dw_mci_k3_probe()
458 	drv_data = match->data;  in dw_mci_k3_probe()
484 MODULE_DESCRIPTION("K3 Specific DW-MSHC Driver Extension");