Commit | Line | Data |
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95f25efe WS |
1 | /* |
2 | * Freescale eSDHC i.MX controller driver for the platform bus. | |
3 | * | |
4 | * derived from the OF-version. | |
5 | * | |
6 | * Copyright (c) 2010 Pengutronix e.K. | |
7 | * Author: Wolfram Sang <w.sang@pengutronix.de> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License. | |
12 | */ | |
13 | ||
14 | #include <linux/io.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/err.h> | |
17 | #include <linux/clk.h> | |
0c6d49ce | 18 | #include <linux/gpio.h> |
66506f76 | 19 | #include <linux/module.h> |
e149860d | 20 | #include <linux/slab.h> |
95f25efe | 21 | #include <linux/mmc/host.h> |
58ac8177 RZ |
22 | #include <linux/mmc/mmc.h> |
23 | #include <linux/mmc/sdio.h> | |
fbe5fdd1 | 24 | #include <linux/mmc/slot-gpio.h> |
abfafc2d SG |
25 | #include <linux/of.h> |
26 | #include <linux/of_device.h> | |
27 | #include <linux/of_gpio.h> | |
e62d8b8f | 28 | #include <linux/pinctrl/consumer.h> |
82906b13 | 29 | #include <linux/platform_data/mmc-esdhc-imx.h> |
95f25efe WS |
30 | #include "sdhci-pltfm.h" |
31 | #include "sdhci-esdhc.h" | |
32 | ||
60bf6396 | 33 | #define ESDHC_CTRL_D3CD 0x08 |
58ac8177 | 34 | /* VENDOR SPEC register */ |
60bf6396 SG |
35 | #define ESDHC_VENDOR_SPEC 0xc0 |
36 | #define ESDHC_VENDOR_SPEC_SDIO_QUIRK (1 << 1) | |
0322191e | 37 | #define ESDHC_VENDOR_SPEC_VSELECT (1 << 1) |
fed2f6e2 | 38 | #define ESDHC_VENDOR_SPEC_FRC_SDCLK_ON (1 << 8) |
60bf6396 SG |
39 | #define ESDHC_WTMK_LVL 0x44 |
40 | #define ESDHC_MIX_CTRL 0x48 | |
2a15f981 | 41 | #define ESDHC_MIX_CTRL_AC23EN (1 << 7) |
0322191e DA |
42 | #define ESDHC_MIX_CTRL_EXE_TUNE (1 << 22) |
43 | #define ESDHC_MIX_CTRL_SMPCLK_SEL (1 << 23) | |
44 | #define ESDHC_MIX_CTRL_FBCLK_SEL (1 << 25) | |
2a15f981 SG |
45 | /* Bits 3 and 6 are not SDHCI standard definitions */ |
46 | #define ESDHC_MIX_CTRL_SDHCI_MASK 0xb7 | |
58ac8177 | 47 | |
0322191e DA |
48 | /* tune control register */ |
49 | #define ESDHC_TUNE_CTRL_STATUS 0x68 | |
50 | #define ESDHC_TUNE_CTRL_STEP 1 | |
51 | #define ESDHC_TUNE_CTRL_MIN 0 | |
52 | #define ESDHC_TUNE_CTRL_MAX ((1 << 7) - 1) | |
53 | ||
54 | #define ESDHC_TUNING_BLOCK_PATTERN_LEN 64 | |
55 | ||
ad93220d DA |
56 | /* pinctrl state */ |
57 | #define ESDHC_PINCTRL_STATE_100MHZ "state_100mhz" | |
58 | #define ESDHC_PINCTRL_STATE_200MHZ "state_200mhz" | |
59 | ||
af51079e SH |
60 | /* |
61 | * Our interpretation of the SDHCI_HOST_CONTROL register | |
62 | */ | |
63 | #define ESDHC_CTRL_4BITBUS (0x1 << 1) | |
64 | #define ESDHC_CTRL_8BITBUS (0x2 << 1) | |
65 | #define ESDHC_CTRL_BUSWIDTH_MASK (0x3 << 1) | |
66 | ||
97e4ba6a RZ |
67 | /* |
68 | * There is an INT DMA ERR mis-match between eSDHC and STD SDHC SPEC: | |
69 | * Bit25 is used in STD SPEC, and is reserved in fsl eSDHC design, | |
70 | * but bit28 is used as the INT DMA ERR in fsl eSDHC design. | |
71 | * Define this macro DMA error INT for fsl eSDHC | |
72 | */ | |
60bf6396 | 73 | #define ESDHC_INT_VENDOR_SPEC_DMA_ERR (1 << 28) |
97e4ba6a | 74 | |
58ac8177 RZ |
75 | /* |
76 | * The CMDTYPE of the CMD register (offset 0xE) should be set to | |
77 | * "11" when the STOP CMD12 is issued on imx53 to abort one | |
78 | * open ended multi-blk IO. Otherwise the TC INT wouldn't | |
79 | * be generated. | |
80 | * In exact block transfer, the controller doesn't complete the | |
81 | * operations automatically as required at the end of the | |
82 | * transfer and remains on hold if the abort command is not sent. | |
83 | * As a result, the TC flag is not asserted and SW received timeout | |
84 | * exeception. Bit1 of Vendor Spec registor is used to fix it. | |
85 | */ | |
86 | #define ESDHC_FLAG_MULTIBLK_NO_INT (1 << 1) | |
e149860d | 87 | |
57ed3314 SG |
88 | enum imx_esdhc_type { |
89 | IMX25_ESDHC, | |
90 | IMX35_ESDHC, | |
91 | IMX51_ESDHC, | |
92 | IMX53_ESDHC, | |
95a2482a | 93 | IMX6Q_USDHC, |
57ed3314 SG |
94 | }; |
95 | ||
e149860d RZ |
96 | struct pltfm_imx_data { |
97 | int flags; | |
98 | u32 scratchpad; | |
57ed3314 | 99 | enum imx_esdhc_type devtype; |
e62d8b8f | 100 | struct pinctrl *pinctrl; |
ad93220d DA |
101 | struct pinctrl_state *pins_default; |
102 | struct pinctrl_state *pins_100mhz; | |
103 | struct pinctrl_state *pins_200mhz; | |
842afc02 | 104 | struct esdhc_platform_data boarddata; |
52dac615 SH |
105 | struct clk *clk_ipg; |
106 | struct clk *clk_ahb; | |
107 | struct clk *clk_per; | |
361b8482 LS |
108 | enum { |
109 | NO_CMD_PENDING, /* no multiblock command pending*/ | |
110 | MULTIBLK_IN_PROCESS, /* exact multiblock cmd in process */ | |
111 | WAIT_FOR_INT, /* sent CMD12, waiting for response INT */ | |
112 | } multiblock_status; | |
0322191e | 113 | u32 uhs_mode; |
e149860d RZ |
114 | }; |
115 | ||
57ed3314 SG |
116 | static struct platform_device_id imx_esdhc_devtype[] = { |
117 | { | |
118 | .name = "sdhci-esdhc-imx25", | |
119 | .driver_data = IMX25_ESDHC, | |
120 | }, { | |
121 | .name = "sdhci-esdhc-imx35", | |
122 | .driver_data = IMX35_ESDHC, | |
123 | }, { | |
124 | .name = "sdhci-esdhc-imx51", | |
125 | .driver_data = IMX51_ESDHC, | |
126 | }, { | |
127 | .name = "sdhci-esdhc-imx53", | |
128 | .driver_data = IMX53_ESDHC, | |
95a2482a SG |
129 | }, { |
130 | .name = "sdhci-usdhc-imx6q", | |
131 | .driver_data = IMX6Q_USDHC, | |
57ed3314 SG |
132 | }, { |
133 | /* sentinel */ | |
134 | } | |
135 | }; | |
136 | MODULE_DEVICE_TABLE(platform, imx_esdhc_devtype); | |
137 | ||
abfafc2d SG |
138 | static const struct of_device_id imx_esdhc_dt_ids[] = { |
139 | { .compatible = "fsl,imx25-esdhc", .data = &imx_esdhc_devtype[IMX25_ESDHC], }, | |
140 | { .compatible = "fsl,imx35-esdhc", .data = &imx_esdhc_devtype[IMX35_ESDHC], }, | |
141 | { .compatible = "fsl,imx51-esdhc", .data = &imx_esdhc_devtype[IMX51_ESDHC], }, | |
142 | { .compatible = "fsl,imx53-esdhc", .data = &imx_esdhc_devtype[IMX53_ESDHC], }, | |
95a2482a | 143 | { .compatible = "fsl,imx6q-usdhc", .data = &imx_esdhc_devtype[IMX6Q_USDHC], }, |
abfafc2d SG |
144 | { /* sentinel */ } |
145 | }; | |
146 | MODULE_DEVICE_TABLE(of, imx_esdhc_dt_ids); | |
147 | ||
57ed3314 SG |
148 | static inline int is_imx25_esdhc(struct pltfm_imx_data *data) |
149 | { | |
150 | return data->devtype == IMX25_ESDHC; | |
151 | } | |
152 | ||
153 | static inline int is_imx35_esdhc(struct pltfm_imx_data *data) | |
154 | { | |
155 | return data->devtype == IMX35_ESDHC; | |
156 | } | |
157 | ||
158 | static inline int is_imx51_esdhc(struct pltfm_imx_data *data) | |
159 | { | |
160 | return data->devtype == IMX51_ESDHC; | |
161 | } | |
162 | ||
163 | static inline int is_imx53_esdhc(struct pltfm_imx_data *data) | |
164 | { | |
165 | return data->devtype == IMX53_ESDHC; | |
166 | } | |
167 | ||
95a2482a SG |
168 | static inline int is_imx6q_usdhc(struct pltfm_imx_data *data) |
169 | { | |
170 | return data->devtype == IMX6Q_USDHC; | |
171 | } | |
172 | ||
95f25efe WS |
173 | static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, int reg) |
174 | { | |
175 | void __iomem *base = host->ioaddr + (reg & ~0x3); | |
176 | u32 shift = (reg & 0x3) * 8; | |
177 | ||
178 | writel(((readl(base) & ~(mask << shift)) | (val << shift)), base); | |
179 | } | |
180 | ||
7e29c306 WS |
181 | static u32 esdhc_readl_le(struct sdhci_host *host, int reg) |
182 | { | |
361b8482 LS |
183 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
184 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
7e29c306 WS |
185 | u32 val = readl(host->ioaddr + reg); |
186 | ||
0322191e DA |
187 | if (unlikely(reg == SDHCI_PRESENT_STATE)) { |
188 | u32 fsl_prss = val; | |
189 | /* save the least 20 bits */ | |
190 | val = fsl_prss & 0x000FFFFF; | |
191 | /* move dat[0-3] bits */ | |
192 | val |= (fsl_prss & 0x0F000000) >> 4; | |
193 | /* move cmd line bit */ | |
194 | val |= (fsl_prss & 0x00800000) << 1; | |
195 | } | |
196 | ||
97e4ba6a RZ |
197 | if (unlikely(reg == SDHCI_CAPABILITIES)) { |
198 | /* In FSL esdhc IC module, only bit20 is used to indicate the | |
199 | * ADMA2 capability of esdhc, but this bit is messed up on | |
200 | * some SOCs (e.g. on MX25, MX35 this bit is set, but they | |
201 | * don't actually support ADMA2). So set the BROKEN_ADMA | |
202 | * uirk on MX25/35 platforms. | |
203 | */ | |
204 | ||
205 | if (val & SDHCI_CAN_DO_ADMA1) { | |
206 | val &= ~SDHCI_CAN_DO_ADMA1; | |
207 | val |= SDHCI_CAN_DO_ADMA2; | |
208 | } | |
209 | } | |
210 | ||
0322191e DA |
211 | if (unlikely(reg == SDHCI_CAPABILITIES_1) && is_imx6q_usdhc(imx_data)) |
212 | val = SDHCI_SUPPORT_DDR50 | SDHCI_SUPPORT_SDR104 | |
213 | | SDHCI_SUPPORT_SDR50; | |
214 | ||
215 | if (unlikely(reg == SDHCI_MAX_CURRENT) && is_imx6q_usdhc(imx_data)) { | |
216 | val = 0; | |
217 | val |= 0xFF << SDHCI_MAX_CURRENT_330_SHIFT; | |
218 | val |= 0xFF << SDHCI_MAX_CURRENT_300_SHIFT; | |
219 | val |= 0xFF << SDHCI_MAX_CURRENT_180_SHIFT; | |
220 | } | |
221 | ||
97e4ba6a | 222 | if (unlikely(reg == SDHCI_INT_STATUS)) { |
60bf6396 SG |
223 | if (val & ESDHC_INT_VENDOR_SPEC_DMA_ERR) { |
224 | val &= ~ESDHC_INT_VENDOR_SPEC_DMA_ERR; | |
97e4ba6a RZ |
225 | val |= SDHCI_INT_ADMA_ERROR; |
226 | } | |
361b8482 LS |
227 | |
228 | /* | |
229 | * mask off the interrupt we get in response to the manually | |
230 | * sent CMD12 | |
231 | */ | |
232 | if ((imx_data->multiblock_status == WAIT_FOR_INT) && | |
233 | ((val & SDHCI_INT_RESPONSE) == SDHCI_INT_RESPONSE)) { | |
234 | val &= ~SDHCI_INT_RESPONSE; | |
235 | writel(SDHCI_INT_RESPONSE, host->ioaddr + | |
236 | SDHCI_INT_STATUS); | |
237 | imx_data->multiblock_status = NO_CMD_PENDING; | |
238 | } | |
97e4ba6a RZ |
239 | } |
240 | ||
7e29c306 WS |
241 | return val; |
242 | } | |
243 | ||
244 | static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) | |
245 | { | |
e149860d RZ |
246 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
247 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
0d58864b TL |
248 | u32 data; |
249 | ||
250 | if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { | |
0d58864b TL |
251 | if (val & SDHCI_INT_CARD_INT) { |
252 | /* | |
253 | * Clear and then set D3CD bit to avoid missing the | |
254 | * card interrupt. This is a eSDHC controller problem | |
255 | * so we need to apply the following workaround: clear | |
256 | * and set D3CD bit will make eSDHC re-sample the card | |
257 | * interrupt. In case a card interrupt was lost, | |
258 | * re-sample it by the following steps. | |
259 | */ | |
260 | data = readl(host->ioaddr + SDHCI_HOST_CONTROL); | |
60bf6396 | 261 | data &= ~ESDHC_CTRL_D3CD; |
0d58864b | 262 | writel(data, host->ioaddr + SDHCI_HOST_CONTROL); |
60bf6396 | 263 | data |= ESDHC_CTRL_D3CD; |
0d58864b TL |
264 | writel(data, host->ioaddr + SDHCI_HOST_CONTROL); |
265 | } | |
266 | } | |
7e29c306 | 267 | |
58ac8177 RZ |
268 | if (unlikely((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT) |
269 | && (reg == SDHCI_INT_STATUS) | |
270 | && (val & SDHCI_INT_DATA_END))) { | |
271 | u32 v; | |
60bf6396 SG |
272 | v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); |
273 | v &= ~ESDHC_VENDOR_SPEC_SDIO_QUIRK; | |
274 | writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); | |
361b8482 LS |
275 | |
276 | if (imx_data->multiblock_status == MULTIBLK_IN_PROCESS) | |
277 | { | |
278 | /* send a manual CMD12 with RESPTYP=none */ | |
279 | data = MMC_STOP_TRANSMISSION << 24 | | |
280 | SDHCI_CMD_ABORTCMD << 16; | |
281 | writel(data, host->ioaddr + SDHCI_TRANSFER_MODE); | |
282 | imx_data->multiblock_status = WAIT_FOR_INT; | |
283 | } | |
58ac8177 RZ |
284 | } |
285 | ||
97e4ba6a RZ |
286 | if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { |
287 | if (val & SDHCI_INT_ADMA_ERROR) { | |
288 | val &= ~SDHCI_INT_ADMA_ERROR; | |
60bf6396 | 289 | val |= ESDHC_INT_VENDOR_SPEC_DMA_ERR; |
97e4ba6a RZ |
290 | } |
291 | } | |
292 | ||
7e29c306 WS |
293 | writel(val, host->ioaddr + reg); |
294 | } | |
295 | ||
95f25efe WS |
296 | static u16 esdhc_readw_le(struct sdhci_host *host, int reg) |
297 | { | |
ef4d0888 SG |
298 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
299 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
0322191e DA |
300 | u16 ret = 0; |
301 | u32 val; | |
ef4d0888 | 302 | |
95a2482a | 303 | if (unlikely(reg == SDHCI_HOST_VERSION)) { |
ef4d0888 SG |
304 | reg ^= 2; |
305 | if (is_imx6q_usdhc(imx_data)) { | |
306 | /* | |
307 | * The usdhc register returns a wrong host version. | |
308 | * Correct it here. | |
309 | */ | |
310 | return SDHCI_SPEC_300; | |
311 | } | |
95a2482a | 312 | } |
95f25efe | 313 | |
0322191e DA |
314 | if (unlikely(reg == SDHCI_HOST_CONTROL2)) { |
315 | val = readl(host->ioaddr + ESDHC_VENDOR_SPEC); | |
316 | if (val & ESDHC_VENDOR_SPEC_VSELECT) | |
317 | ret |= SDHCI_CTRL_VDD_180; | |
318 | ||
319 | if (is_imx6q_usdhc(imx_data)) { | |
320 | val = readl(host->ioaddr + ESDHC_MIX_CTRL); | |
321 | if (val & ESDHC_MIX_CTRL_EXE_TUNE) | |
322 | ret |= SDHCI_CTRL_EXEC_TUNING; | |
323 | if (val & ESDHC_MIX_CTRL_SMPCLK_SEL) | |
324 | ret |= SDHCI_CTRL_TUNED_CLK; | |
325 | } | |
326 | ||
327 | ret |= (imx_data->uhs_mode & SDHCI_CTRL_UHS_MASK); | |
328 | ret &= ~SDHCI_CTRL_PRESET_VAL_ENABLE; | |
329 | ||
330 | return ret; | |
331 | } | |
332 | ||
95f25efe WS |
333 | return readw(host->ioaddr + reg); |
334 | } | |
335 | ||
336 | static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) | |
337 | { | |
338 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
e149860d | 339 | struct pltfm_imx_data *imx_data = pltfm_host->priv; |
0322191e | 340 | u32 new_val = 0; |
95f25efe WS |
341 | |
342 | switch (reg) { | |
0322191e DA |
343 | case SDHCI_CLOCK_CONTROL: |
344 | new_val = readl(host->ioaddr + ESDHC_VENDOR_SPEC); | |
345 | if (val & SDHCI_CLOCK_CARD_EN) | |
346 | new_val |= ESDHC_VENDOR_SPEC_FRC_SDCLK_ON; | |
347 | else | |
348 | new_val &= ~ESDHC_VENDOR_SPEC_FRC_SDCLK_ON; | |
349 | writel(new_val, host->ioaddr + ESDHC_VENDOR_SPEC); | |
350 | return; | |
351 | case SDHCI_HOST_CONTROL2: | |
352 | new_val = readl(host->ioaddr + ESDHC_VENDOR_SPEC); | |
353 | if (val & SDHCI_CTRL_VDD_180) | |
354 | new_val |= ESDHC_VENDOR_SPEC_VSELECT; | |
355 | else | |
356 | new_val &= ~ESDHC_VENDOR_SPEC_VSELECT; | |
357 | writel(new_val, host->ioaddr + ESDHC_VENDOR_SPEC); | |
358 | imx_data->uhs_mode = val & SDHCI_CTRL_UHS_MASK; | |
359 | new_val = readl(host->ioaddr + ESDHC_MIX_CTRL); | |
360 | if (val & SDHCI_CTRL_TUNED_CLK) | |
361 | new_val |= ESDHC_MIX_CTRL_SMPCLK_SEL; | |
362 | else | |
363 | new_val &= ~ESDHC_MIX_CTRL_SMPCLK_SEL; | |
364 | writel(new_val , host->ioaddr + ESDHC_MIX_CTRL); | |
365 | return; | |
95f25efe | 366 | case SDHCI_TRANSFER_MODE: |
58ac8177 RZ |
367 | if ((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT) |
368 | && (host->cmd->opcode == SD_IO_RW_EXTENDED) | |
369 | && (host->cmd->data->blocks > 1) | |
370 | && (host->cmd->data->flags & MMC_DATA_READ)) { | |
371 | u32 v; | |
60bf6396 SG |
372 | v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); |
373 | v |= ESDHC_VENDOR_SPEC_SDIO_QUIRK; | |
374 | writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); | |
58ac8177 | 375 | } |
69f54698 SG |
376 | |
377 | if (is_imx6q_usdhc(imx_data)) { | |
378 | u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL); | |
2a15f981 SG |
379 | /* Swap AC23 bit */ |
380 | if (val & SDHCI_TRNS_AUTO_CMD23) { | |
381 | val &= ~SDHCI_TRNS_AUTO_CMD23; | |
382 | val |= ESDHC_MIX_CTRL_AC23EN; | |
383 | } | |
384 | m = val | (m & ~ESDHC_MIX_CTRL_SDHCI_MASK); | |
69f54698 SG |
385 | writel(m, host->ioaddr + ESDHC_MIX_CTRL); |
386 | } else { | |
387 | /* | |
388 | * Postpone this write, we must do it together with a | |
389 | * command write that is down below. | |
390 | */ | |
391 | imx_data->scratchpad = val; | |
392 | } | |
95f25efe WS |
393 | return; |
394 | case SDHCI_COMMAND: | |
361b8482 | 395 | if (host->cmd->opcode == MMC_STOP_TRANSMISSION) |
58ac8177 | 396 | val |= SDHCI_CMD_ABORTCMD; |
95a2482a | 397 | |
361b8482 LS |
398 | if ((host->cmd->opcode == MMC_SET_BLOCK_COUNT) && |
399 | (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) | |
400 | imx_data->multiblock_status = MULTIBLK_IN_PROCESS; | |
401 | ||
69f54698 | 402 | if (is_imx6q_usdhc(imx_data)) |
95a2482a SG |
403 | writel(val << 16, |
404 | host->ioaddr + SDHCI_TRANSFER_MODE); | |
69f54698 | 405 | else |
95a2482a SG |
406 | writel(val << 16 | imx_data->scratchpad, |
407 | host->ioaddr + SDHCI_TRANSFER_MODE); | |
95f25efe WS |
408 | return; |
409 | case SDHCI_BLOCK_SIZE: | |
410 | val &= ~SDHCI_MAKE_BLKSZ(0x7, 0); | |
411 | break; | |
412 | } | |
413 | esdhc_clrset_le(host, 0xffff, val, reg); | |
414 | } | |
415 | ||
416 | static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) | |
417 | { | |
9a0985b7 WC |
418 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
419 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
95f25efe | 420 | u32 new_val; |
af51079e | 421 | u32 mask; |
95f25efe WS |
422 | |
423 | switch (reg) { | |
424 | case SDHCI_POWER_CONTROL: | |
425 | /* | |
426 | * FSL put some DMA bits here | |
427 | * If your board has a regulator, code should be here | |
428 | */ | |
429 | return; | |
430 | case SDHCI_HOST_CONTROL: | |
6b40d182 | 431 | /* FSL messed up here, so we need to manually compose it. */ |
af51079e | 432 | new_val = val & SDHCI_CTRL_LED; |
7122bbb0 | 433 | /* ensure the endianness */ |
95f25efe | 434 | new_val |= ESDHC_HOST_CONTROL_LE; |
9a0985b7 WC |
435 | /* bits 8&9 are reserved on mx25 */ |
436 | if (!is_imx25_esdhc(imx_data)) { | |
437 | /* DMA mode bits are shifted */ | |
438 | new_val |= (val & SDHCI_CTRL_DMA_MASK) << 5; | |
439 | } | |
95f25efe | 440 | |
af51079e SH |
441 | /* |
442 | * Do not touch buswidth bits here. This is done in | |
443 | * esdhc_pltfm_bus_width. | |
f6825748 MF |
444 | * Do not touch the D3CD bit either which is used for the |
445 | * SDIO interrupt errata workaround. | |
af51079e | 446 | */ |
f6825748 | 447 | mask = 0xffff & ~(ESDHC_CTRL_BUSWIDTH_MASK | ESDHC_CTRL_D3CD); |
af51079e SH |
448 | |
449 | esdhc_clrset_le(host, mask, new_val, reg); | |
95f25efe WS |
450 | return; |
451 | } | |
452 | esdhc_clrset_le(host, 0xff, val, reg); | |
913413c3 SG |
453 | |
454 | /* | |
455 | * The esdhc has a design violation to SDHC spec which tells | |
456 | * that software reset should not affect card detection circuit. | |
457 | * But esdhc clears its SYSCTL register bits [0..2] during the | |
458 | * software reset. This will stop those clocks that card detection | |
459 | * circuit relies on. To work around it, we turn the clocks on back | |
460 | * to keep card detection circuit functional. | |
461 | */ | |
58c8c4fb | 462 | if ((reg == SDHCI_SOFTWARE_RESET) && (val & 1)) { |
913413c3 | 463 | esdhc_clrset_le(host, 0x7, 0x7, ESDHC_SYSTEM_CONTROL); |
58c8c4fb SG |
464 | /* |
465 | * The reset on usdhc fails to clear MIX_CTRL register. | |
466 | * Do it manually here. | |
467 | */ | |
468 | if (is_imx6q_usdhc(imx_data)) | |
469 | writel(0, host->ioaddr + ESDHC_MIX_CTRL); | |
470 | } | |
95f25efe WS |
471 | } |
472 | ||
0ddf03c9 LS |
473 | static unsigned int esdhc_pltfm_get_max_clock(struct sdhci_host *host) |
474 | { | |
475 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
476 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
477 | struct esdhc_platform_data *boarddata = &imx_data->boarddata; | |
478 | ||
479 | u32 f_host = clk_get_rate(pltfm_host->clk); | |
480 | ||
481 | if (boarddata->f_max && (boarddata->f_max < f_host)) | |
482 | return boarddata->f_max; | |
483 | else | |
484 | return f_host; | |
485 | } | |
486 | ||
95f25efe WS |
487 | static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host) |
488 | { | |
489 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
490 | ||
491 | return clk_get_rate(pltfm_host->clk) / 256 / 16; | |
492 | } | |
493 | ||
8ba9580a LS |
494 | static inline void esdhc_pltfm_set_clock(struct sdhci_host *host, |
495 | unsigned int clock) | |
496 | { | |
497 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
fed2f6e2 | 498 | struct pltfm_imx_data *imx_data = pltfm_host->priv; |
d31fc00a DA |
499 | unsigned int host_clock = clk_get_rate(pltfm_host->clk); |
500 | int pre_div = 2; | |
501 | int div = 1; | |
fed2f6e2 | 502 | u32 temp, val; |
d31fc00a | 503 | |
fed2f6e2 DA |
504 | if (clock == 0) { |
505 | if (is_imx6q_usdhc(imx_data)) { | |
506 | val = readl(host->ioaddr + ESDHC_VENDOR_SPEC); | |
507 | writel(val & ~ESDHC_VENDOR_SPEC_FRC_SDCLK_ON, | |
508 | host->ioaddr + ESDHC_VENDOR_SPEC); | |
509 | } | |
d31fc00a | 510 | goto out; |
fed2f6e2 | 511 | } |
d31fc00a | 512 | |
5f7886c5 DA |
513 | if (is_imx6q_usdhc(imx_data)) |
514 | pre_div = 1; | |
515 | ||
d31fc00a DA |
516 | temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); |
517 | temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | |
518 | | ESDHC_CLOCK_MASK); | |
519 | sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); | |
520 | ||
521 | while (host_clock / pre_div / 16 > clock && pre_div < 256) | |
522 | pre_div *= 2; | |
523 | ||
524 | while (host_clock / pre_div / div > clock && div < 16) | |
525 | div++; | |
526 | ||
527 | dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n", | |
528 | clock, host_clock / pre_div / div); | |
529 | ||
530 | pre_div >>= 1; | |
531 | div--; | |
532 | ||
533 | temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); | |
534 | temp |= (ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | |
535 | | (div << ESDHC_DIVIDER_SHIFT) | |
536 | | (pre_div << ESDHC_PREDIV_SHIFT)); | |
537 | sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); | |
fed2f6e2 DA |
538 | |
539 | if (is_imx6q_usdhc(imx_data)) { | |
540 | val = readl(host->ioaddr + ESDHC_VENDOR_SPEC); | |
541 | writel(val | ESDHC_VENDOR_SPEC_FRC_SDCLK_ON, | |
542 | host->ioaddr + ESDHC_VENDOR_SPEC); | |
543 | } | |
544 | ||
d31fc00a DA |
545 | mdelay(1); |
546 | out: | |
547 | host->clock = clock; | |
8ba9580a LS |
548 | } |
549 | ||
913413c3 SG |
550 | static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) |
551 | { | |
842afc02 SG |
552 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
553 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
554 | struct esdhc_platform_data *boarddata = &imx_data->boarddata; | |
913413c3 SG |
555 | |
556 | switch (boarddata->wp_type) { | |
557 | case ESDHC_WP_GPIO: | |
fbe5fdd1 | 558 | return mmc_gpio_get_ro(host->mmc); |
913413c3 SG |
559 | case ESDHC_WP_CONTROLLER: |
560 | return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) & | |
561 | SDHCI_WRITE_PROTECT); | |
562 | case ESDHC_WP_NONE: | |
563 | break; | |
564 | } | |
565 | ||
566 | return -ENOSYS; | |
567 | } | |
568 | ||
af51079e SH |
569 | static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width) |
570 | { | |
571 | u32 ctrl; | |
572 | ||
573 | switch (width) { | |
574 | case MMC_BUS_WIDTH_8: | |
575 | ctrl = ESDHC_CTRL_8BITBUS; | |
576 | break; | |
577 | case MMC_BUS_WIDTH_4: | |
578 | ctrl = ESDHC_CTRL_4BITBUS; | |
579 | break; | |
580 | default: | |
581 | ctrl = 0; | |
582 | break; | |
583 | } | |
584 | ||
585 | esdhc_clrset_le(host, ESDHC_CTRL_BUSWIDTH_MASK, ctrl, | |
586 | SDHCI_HOST_CONTROL); | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
0322191e DA |
591 | static void esdhc_prepare_tuning(struct sdhci_host *host, u32 val) |
592 | { | |
593 | u32 reg; | |
594 | ||
595 | /* FIXME: delay a bit for card to be ready for next tuning due to errors */ | |
596 | mdelay(1); | |
597 | ||
598 | reg = readl(host->ioaddr + ESDHC_MIX_CTRL); | |
599 | reg |= ESDHC_MIX_CTRL_EXE_TUNE | ESDHC_MIX_CTRL_SMPCLK_SEL | | |
600 | ESDHC_MIX_CTRL_FBCLK_SEL; | |
601 | writel(reg, host->ioaddr + ESDHC_MIX_CTRL); | |
602 | writel(val << 8, host->ioaddr + ESDHC_TUNE_CTRL_STATUS); | |
603 | dev_dbg(mmc_dev(host->mmc), | |
604 | "tunning with delay 0x%x ESDHC_TUNE_CTRL_STATUS 0x%x\n", | |
605 | val, readl(host->ioaddr + ESDHC_TUNE_CTRL_STATUS)); | |
606 | } | |
607 | ||
608 | static void esdhc_request_done(struct mmc_request *mrq) | |
609 | { | |
610 | complete(&mrq->completion); | |
611 | } | |
612 | ||
613 | static int esdhc_send_tuning_cmd(struct sdhci_host *host, u32 opcode) | |
614 | { | |
615 | struct mmc_command cmd = {0}; | |
616 | struct mmc_request mrq = {0}; | |
617 | struct mmc_data data = {0}; | |
618 | struct scatterlist sg; | |
619 | char tuning_pattern[ESDHC_TUNING_BLOCK_PATTERN_LEN]; | |
620 | ||
621 | cmd.opcode = opcode; | |
622 | cmd.arg = 0; | |
623 | cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; | |
624 | ||
625 | data.blksz = ESDHC_TUNING_BLOCK_PATTERN_LEN; | |
626 | data.blocks = 1; | |
627 | data.flags = MMC_DATA_READ; | |
628 | data.sg = &sg; | |
629 | data.sg_len = 1; | |
630 | ||
631 | sg_init_one(&sg, tuning_pattern, sizeof(tuning_pattern)); | |
632 | ||
633 | mrq.cmd = &cmd; | |
634 | mrq.cmd->mrq = &mrq; | |
635 | mrq.data = &data; | |
636 | mrq.data->mrq = &mrq; | |
637 | mrq.cmd->data = mrq.data; | |
638 | ||
639 | mrq.done = esdhc_request_done; | |
640 | init_completion(&(mrq.completion)); | |
641 | ||
642 | disable_irq(host->irq); | |
643 | spin_lock(&host->lock); | |
644 | host->mrq = &mrq; | |
645 | ||
646 | sdhci_send_command(host, mrq.cmd); | |
647 | ||
648 | spin_unlock(&host->lock); | |
649 | enable_irq(host->irq); | |
650 | ||
651 | wait_for_completion(&mrq.completion); | |
652 | ||
653 | if (cmd.error) | |
654 | return cmd.error; | |
655 | if (data.error) | |
656 | return data.error; | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | static void esdhc_post_tuning(struct sdhci_host *host) | |
662 | { | |
663 | u32 reg; | |
664 | ||
665 | reg = readl(host->ioaddr + ESDHC_MIX_CTRL); | |
666 | reg &= ~ESDHC_MIX_CTRL_EXE_TUNE; | |
667 | writel(reg, host->ioaddr + ESDHC_MIX_CTRL); | |
668 | } | |
669 | ||
670 | static int esdhc_executing_tuning(struct sdhci_host *host, u32 opcode) | |
671 | { | |
672 | int min, max, avg, ret; | |
673 | ||
674 | /* find the mininum delay first which can pass tuning */ | |
675 | min = ESDHC_TUNE_CTRL_MIN; | |
676 | while (min < ESDHC_TUNE_CTRL_MAX) { | |
677 | esdhc_prepare_tuning(host, min); | |
678 | if (!esdhc_send_tuning_cmd(host, opcode)) | |
679 | break; | |
680 | min += ESDHC_TUNE_CTRL_STEP; | |
681 | } | |
682 | ||
683 | /* find the maxinum delay which can not pass tuning */ | |
684 | max = min + ESDHC_TUNE_CTRL_STEP; | |
685 | while (max < ESDHC_TUNE_CTRL_MAX) { | |
686 | esdhc_prepare_tuning(host, max); | |
687 | if (esdhc_send_tuning_cmd(host, opcode)) { | |
688 | max -= ESDHC_TUNE_CTRL_STEP; | |
689 | break; | |
690 | } | |
691 | max += ESDHC_TUNE_CTRL_STEP; | |
692 | } | |
693 | ||
694 | /* use average delay to get the best timing */ | |
695 | avg = (min + max) / 2; | |
696 | esdhc_prepare_tuning(host, avg); | |
697 | ret = esdhc_send_tuning_cmd(host, opcode); | |
698 | esdhc_post_tuning(host); | |
699 | ||
700 | dev_dbg(mmc_dev(host->mmc), "tunning %s at 0x%x ret %d\n", | |
701 | ret ? "failed" : "passed", avg, ret); | |
702 | ||
703 | return ret; | |
704 | } | |
705 | ||
ad93220d DA |
706 | static int esdhc_change_pinstate(struct sdhci_host *host, |
707 | unsigned int uhs) | |
708 | { | |
709 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
710 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
711 | struct pinctrl_state *pinctrl; | |
712 | ||
713 | dev_dbg(mmc_dev(host->mmc), "change pinctrl state for uhs %d\n", uhs); | |
714 | ||
715 | if (IS_ERR(imx_data->pinctrl) || | |
716 | IS_ERR(imx_data->pins_default) || | |
717 | IS_ERR(imx_data->pins_100mhz) || | |
718 | IS_ERR(imx_data->pins_200mhz)) | |
719 | return -EINVAL; | |
720 | ||
721 | switch (uhs) { | |
722 | case MMC_TIMING_UHS_SDR50: | |
723 | pinctrl = imx_data->pins_100mhz; | |
724 | break; | |
725 | case MMC_TIMING_UHS_SDR104: | |
726 | pinctrl = imx_data->pins_200mhz; | |
727 | break; | |
728 | default: | |
729 | /* back to default state for other legacy timing */ | |
730 | pinctrl = imx_data->pins_default; | |
731 | } | |
732 | ||
733 | return pinctrl_select_state(imx_data->pinctrl, pinctrl); | |
734 | } | |
735 | ||
736 | static int esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) | |
737 | { | |
738 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
739 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
740 | ||
741 | switch (uhs) { | |
742 | case MMC_TIMING_UHS_SDR12: | |
743 | imx_data->uhs_mode = SDHCI_CTRL_UHS_SDR12; | |
744 | break; | |
745 | case MMC_TIMING_UHS_SDR25: | |
746 | imx_data->uhs_mode = SDHCI_CTRL_UHS_SDR25; | |
747 | break; | |
748 | case MMC_TIMING_UHS_SDR50: | |
749 | imx_data->uhs_mode = SDHCI_CTRL_UHS_SDR50; | |
750 | break; | |
751 | case MMC_TIMING_UHS_SDR104: | |
752 | imx_data->uhs_mode = SDHCI_CTRL_UHS_SDR104; | |
753 | break; | |
754 | case MMC_TIMING_UHS_DDR50: | |
755 | imx_data->uhs_mode = SDHCI_CTRL_UHS_DDR50; | |
756 | break; | |
757 | } | |
758 | ||
759 | return esdhc_change_pinstate(host, uhs); | |
760 | } | |
761 | ||
c915568d | 762 | static const struct sdhci_ops sdhci_esdhc_ops = { |
e149860d | 763 | .read_l = esdhc_readl_le, |
0c6d49ce | 764 | .read_w = esdhc_readw_le, |
e149860d | 765 | .write_l = esdhc_writel_le, |
0c6d49ce WS |
766 | .write_w = esdhc_writew_le, |
767 | .write_b = esdhc_writeb_le, | |
8ba9580a | 768 | .set_clock = esdhc_pltfm_set_clock, |
0ddf03c9 | 769 | .get_max_clock = esdhc_pltfm_get_max_clock, |
0c6d49ce | 770 | .get_min_clock = esdhc_pltfm_get_min_clock, |
913413c3 | 771 | .get_ro = esdhc_pltfm_get_ro, |
af51079e | 772 | .platform_bus_width = esdhc_pltfm_bus_width, |
ad93220d | 773 | .set_uhs_signaling = esdhc_set_uhs_signaling, |
0322191e | 774 | .platform_execute_tuning = esdhc_executing_tuning, |
0c6d49ce WS |
775 | }; |
776 | ||
1db5eebf | 777 | static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { |
97e4ba6a RZ |
778 | .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_NO_HISPD_BIT |
779 | | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | |
780 | | SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | |
85d6509d | 781 | | SDHCI_QUIRK_BROKEN_CARD_DETECTION, |
85d6509d SG |
782 | .ops = &sdhci_esdhc_ops, |
783 | }; | |
784 | ||
abfafc2d | 785 | #ifdef CONFIG_OF |
c3be1efd | 786 | static int |
abfafc2d SG |
787 | sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, |
788 | struct esdhc_platform_data *boarddata) | |
789 | { | |
790 | struct device_node *np = pdev->dev.of_node; | |
791 | ||
792 | if (!np) | |
793 | return -ENODEV; | |
794 | ||
7f217794 | 795 | if (of_get_property(np, "non-removable", NULL)) |
abfafc2d SG |
796 | boarddata->cd_type = ESDHC_CD_PERMANENT; |
797 | ||
798 | if (of_get_property(np, "fsl,cd-controller", NULL)) | |
799 | boarddata->cd_type = ESDHC_CD_CONTROLLER; | |
800 | ||
801 | if (of_get_property(np, "fsl,wp-controller", NULL)) | |
802 | boarddata->wp_type = ESDHC_WP_CONTROLLER; | |
803 | ||
804 | boarddata->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); | |
805 | if (gpio_is_valid(boarddata->cd_gpio)) | |
806 | boarddata->cd_type = ESDHC_CD_GPIO; | |
807 | ||
808 | boarddata->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); | |
809 | if (gpio_is_valid(boarddata->wp_gpio)) | |
810 | boarddata->wp_type = ESDHC_WP_GPIO; | |
811 | ||
af51079e SH |
812 | of_property_read_u32(np, "bus-width", &boarddata->max_bus_width); |
813 | ||
0ddf03c9 LS |
814 | of_property_read_u32(np, "max-frequency", &boarddata->f_max); |
815 | ||
ad93220d DA |
816 | if (of_find_property(np, "no-1-8-v", NULL)) |
817 | boarddata->support_vsel = false; | |
818 | else | |
819 | boarddata->support_vsel = true; | |
820 | ||
abfafc2d SG |
821 | return 0; |
822 | } | |
823 | #else | |
824 | static inline int | |
825 | sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, | |
826 | struct esdhc_platform_data *boarddata) | |
827 | { | |
828 | return -ENODEV; | |
829 | } | |
830 | #endif | |
831 | ||
c3be1efd | 832 | static int sdhci_esdhc_imx_probe(struct platform_device *pdev) |
95f25efe | 833 | { |
abfafc2d SG |
834 | const struct of_device_id *of_id = |
835 | of_match_device(imx_esdhc_dt_ids, &pdev->dev); | |
85d6509d SG |
836 | struct sdhci_pltfm_host *pltfm_host; |
837 | struct sdhci_host *host; | |
838 | struct esdhc_platform_data *boarddata; | |
0c6d49ce | 839 | int err; |
e149860d | 840 | struct pltfm_imx_data *imx_data; |
95f25efe | 841 | |
0e748234 | 842 | host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata, 0); |
85d6509d SG |
843 | if (IS_ERR(host)) |
844 | return PTR_ERR(host); | |
845 | ||
846 | pltfm_host = sdhci_priv(host); | |
847 | ||
e3af31c6 | 848 | imx_data = devm_kzalloc(&pdev->dev, sizeof(*imx_data), GFP_KERNEL); |
abfafc2d SG |
849 | if (!imx_data) { |
850 | err = -ENOMEM; | |
e3af31c6 | 851 | goto free_sdhci; |
abfafc2d | 852 | } |
57ed3314 | 853 | |
abfafc2d SG |
854 | if (of_id) |
855 | pdev->id_entry = of_id->data; | |
57ed3314 | 856 | imx_data->devtype = pdev->id_entry->driver_data; |
85d6509d SG |
857 | pltfm_host->priv = imx_data; |
858 | ||
52dac615 SH |
859 | imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); |
860 | if (IS_ERR(imx_data->clk_ipg)) { | |
861 | err = PTR_ERR(imx_data->clk_ipg); | |
e3af31c6 | 862 | goto free_sdhci; |
95f25efe | 863 | } |
52dac615 SH |
864 | |
865 | imx_data->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); | |
866 | if (IS_ERR(imx_data->clk_ahb)) { | |
867 | err = PTR_ERR(imx_data->clk_ahb); | |
e3af31c6 | 868 | goto free_sdhci; |
52dac615 SH |
869 | } |
870 | ||
871 | imx_data->clk_per = devm_clk_get(&pdev->dev, "per"); | |
872 | if (IS_ERR(imx_data->clk_per)) { | |
873 | err = PTR_ERR(imx_data->clk_per); | |
e3af31c6 | 874 | goto free_sdhci; |
52dac615 SH |
875 | } |
876 | ||
877 | pltfm_host->clk = imx_data->clk_per; | |
878 | ||
879 | clk_prepare_enable(imx_data->clk_per); | |
880 | clk_prepare_enable(imx_data->clk_ipg); | |
881 | clk_prepare_enable(imx_data->clk_ahb); | |
95f25efe | 882 | |
ad93220d | 883 | imx_data->pinctrl = devm_pinctrl_get(&pdev->dev); |
e62d8b8f DA |
884 | if (IS_ERR(imx_data->pinctrl)) { |
885 | err = PTR_ERR(imx_data->pinctrl); | |
e3af31c6 | 886 | goto disable_clk; |
e62d8b8f DA |
887 | } |
888 | ||
ad93220d DA |
889 | imx_data->pins_default = pinctrl_lookup_state(imx_data->pinctrl, |
890 | PINCTRL_STATE_DEFAULT); | |
891 | if (IS_ERR(imx_data->pins_default)) { | |
892 | err = PTR_ERR(imx_data->pins_default); | |
893 | dev_err(mmc_dev(host->mmc), "could not get default state\n"); | |
894 | goto disable_clk; | |
895 | } | |
896 | ||
b8915282 | 897 | host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; |
37865fe9 | 898 | |
57ed3314 | 899 | if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data)) |
0c6d49ce | 900 | /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */ |
97e4ba6a RZ |
901 | host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK |
902 | | SDHCI_QUIRK_BROKEN_ADMA; | |
0c6d49ce | 903 | |
57ed3314 | 904 | if (is_imx53_esdhc(imx_data)) |
58ac8177 RZ |
905 | imx_data->flags |= ESDHC_FLAG_MULTIBLK_NO_INT; |
906 | ||
f750ba9b SG |
907 | /* |
908 | * The imx6q ROM code will change the default watermark level setting | |
909 | * to something insane. Change it back here. | |
910 | */ | |
911 | if (is_imx6q_usdhc(imx_data)) | |
60bf6396 | 912 | writel(0x08100810, host->ioaddr + ESDHC_WTMK_LVL); |
f750ba9b | 913 | |
842afc02 | 914 | boarddata = &imx_data->boarddata; |
abfafc2d SG |
915 | if (sdhci_esdhc_imx_probe_dt(pdev, boarddata) < 0) { |
916 | if (!host->mmc->parent->platform_data) { | |
917 | dev_err(mmc_dev(host->mmc), "no board data!\n"); | |
918 | err = -EINVAL; | |
e3af31c6 | 919 | goto disable_clk; |
abfafc2d SG |
920 | } |
921 | imx_data->boarddata = *((struct esdhc_platform_data *) | |
922 | host->mmc->parent->platform_data); | |
923 | } | |
913413c3 SG |
924 | |
925 | /* write_protect */ | |
926 | if (boarddata->wp_type == ESDHC_WP_GPIO) { | |
fbe5fdd1 | 927 | err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio); |
0c6d49ce | 928 | if (err) { |
fbe5fdd1 SG |
929 | dev_err(mmc_dev(host->mmc), |
930 | "failed to request write-protect gpio!\n"); | |
931 | goto disable_clk; | |
0c6d49ce | 932 | } |
fbe5fdd1 | 933 | host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; |
913413c3 SG |
934 | } |
935 | ||
936 | /* card_detect */ | |
913413c3 SG |
937 | switch (boarddata->cd_type) { |
938 | case ESDHC_CD_GPIO: | |
214fc309 | 939 | err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio, 0); |
7e29c306 | 940 | if (err) { |
913413c3 | 941 | dev_err(mmc_dev(host->mmc), |
fbe5fdd1 | 942 | "failed to request card-detect gpio!\n"); |
e3af31c6 | 943 | goto disable_clk; |
7e29c306 | 944 | } |
913413c3 | 945 | /* fall through */ |
7e29c306 | 946 | |
913413c3 SG |
947 | case ESDHC_CD_CONTROLLER: |
948 | /* we have a working card_detect back */ | |
7e29c306 | 949 | host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; |
913413c3 SG |
950 | break; |
951 | ||
952 | case ESDHC_CD_PERMANENT: | |
953 | host->mmc->caps = MMC_CAP_NONREMOVABLE; | |
954 | break; | |
955 | ||
956 | case ESDHC_CD_NONE: | |
957 | break; | |
0c6d49ce | 958 | } |
16a790bc | 959 | |
af51079e SH |
960 | switch (boarddata->max_bus_width) { |
961 | case 8: | |
962 | host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA; | |
963 | break; | |
964 | case 4: | |
965 | host->mmc->caps |= MMC_CAP_4_BIT_DATA; | |
966 | break; | |
967 | case 1: | |
968 | default: | |
969 | host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA; | |
970 | break; | |
971 | } | |
972 | ||
ad93220d DA |
973 | /* sdr50 and sdr104 needs work on 1.8v signal voltage */ |
974 | if ((boarddata->support_vsel) && is_imx6q_usdhc(imx_data)) { | |
975 | imx_data->pins_100mhz = pinctrl_lookup_state(imx_data->pinctrl, | |
976 | ESDHC_PINCTRL_STATE_100MHZ); | |
977 | imx_data->pins_200mhz = pinctrl_lookup_state(imx_data->pinctrl, | |
978 | ESDHC_PINCTRL_STATE_200MHZ); | |
979 | if (IS_ERR(imx_data->pins_100mhz) || | |
980 | IS_ERR(imx_data->pins_200mhz)) { | |
981 | dev_warn(mmc_dev(host->mmc), | |
982 | "could not get ultra high speed state, work on normal mode\n"); | |
983 | /* fall back to not support uhs by specify no 1.8v quirk */ | |
984 | host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; | |
985 | } | |
986 | } else { | |
987 | host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; | |
988 | } | |
989 | ||
85d6509d SG |
990 | err = sdhci_add_host(host); |
991 | if (err) | |
e3af31c6 | 992 | goto disable_clk; |
85d6509d | 993 | |
95f25efe | 994 | return 0; |
7e29c306 | 995 | |
e3af31c6 | 996 | disable_clk: |
52dac615 SH |
997 | clk_disable_unprepare(imx_data->clk_per); |
998 | clk_disable_unprepare(imx_data->clk_ipg); | |
999 | clk_disable_unprepare(imx_data->clk_ahb); | |
e3af31c6 | 1000 | free_sdhci: |
85d6509d SG |
1001 | sdhci_pltfm_free(pdev); |
1002 | return err; | |
95f25efe WS |
1003 | } |
1004 | ||
6e0ee714 | 1005 | static int sdhci_esdhc_imx_remove(struct platform_device *pdev) |
95f25efe | 1006 | { |
85d6509d | 1007 | struct sdhci_host *host = platform_get_drvdata(pdev); |
95f25efe | 1008 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
e149860d | 1009 | struct pltfm_imx_data *imx_data = pltfm_host->priv; |
85d6509d SG |
1010 | int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); |
1011 | ||
1012 | sdhci_remove_host(host, dead); | |
0c6d49ce | 1013 | |
52dac615 SH |
1014 | clk_disable_unprepare(imx_data->clk_per); |
1015 | clk_disable_unprepare(imx_data->clk_ipg); | |
1016 | clk_disable_unprepare(imx_data->clk_ahb); | |
1017 | ||
85d6509d SG |
1018 | sdhci_pltfm_free(pdev); |
1019 | ||
1020 | return 0; | |
95f25efe WS |
1021 | } |
1022 | ||
85d6509d SG |
1023 | static struct platform_driver sdhci_esdhc_imx_driver = { |
1024 | .driver = { | |
1025 | .name = "sdhci-esdhc-imx", | |
1026 | .owner = THIS_MODULE, | |
abfafc2d | 1027 | .of_match_table = imx_esdhc_dt_ids, |
29495aa0 | 1028 | .pm = SDHCI_PLTFM_PMOPS, |
85d6509d | 1029 | }, |
57ed3314 | 1030 | .id_table = imx_esdhc_devtype, |
85d6509d | 1031 | .probe = sdhci_esdhc_imx_probe, |
0433c143 | 1032 | .remove = sdhci_esdhc_imx_remove, |
95f25efe | 1033 | }; |
85d6509d | 1034 | |
d1f81a64 | 1035 | module_platform_driver(sdhci_esdhc_imx_driver); |
85d6509d SG |
1036 | |
1037 | MODULE_DESCRIPTION("SDHCI driver for Freescale i.MX eSDHC"); | |
1038 | MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>"); | |
1039 | MODULE_LICENSE("GPL v2"); |