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) | |
37 | #define ESDHC_WTMK_LVL 0x44 | |
38 | #define ESDHC_MIX_CTRL 0x48 | |
58ac8177 | 39 | |
97e4ba6a RZ |
40 | /* |
41 | * There is an INT DMA ERR mis-match between eSDHC and STD SDHC SPEC: | |
42 | * Bit25 is used in STD SPEC, and is reserved in fsl eSDHC design, | |
43 | * but bit28 is used as the INT DMA ERR in fsl eSDHC design. | |
44 | * Define this macro DMA error INT for fsl eSDHC | |
45 | */ | |
60bf6396 | 46 | #define ESDHC_INT_VENDOR_SPEC_DMA_ERR (1 << 28) |
97e4ba6a | 47 | |
58ac8177 RZ |
48 | /* |
49 | * The CMDTYPE of the CMD register (offset 0xE) should be set to | |
50 | * "11" when the STOP CMD12 is issued on imx53 to abort one | |
51 | * open ended multi-blk IO. Otherwise the TC INT wouldn't | |
52 | * be generated. | |
53 | * In exact block transfer, the controller doesn't complete the | |
54 | * operations automatically as required at the end of the | |
55 | * transfer and remains on hold if the abort command is not sent. | |
56 | * As a result, the TC flag is not asserted and SW received timeout | |
57 | * exeception. Bit1 of Vendor Spec registor is used to fix it. | |
58 | */ | |
59 | #define ESDHC_FLAG_MULTIBLK_NO_INT (1 << 1) | |
e149860d | 60 | |
57ed3314 SG |
61 | enum imx_esdhc_type { |
62 | IMX25_ESDHC, | |
63 | IMX35_ESDHC, | |
64 | IMX51_ESDHC, | |
65 | IMX53_ESDHC, | |
95a2482a | 66 | IMX6Q_USDHC, |
57ed3314 SG |
67 | }; |
68 | ||
e149860d RZ |
69 | struct pltfm_imx_data { |
70 | int flags; | |
71 | u32 scratchpad; | |
57ed3314 | 72 | enum imx_esdhc_type devtype; |
e62d8b8f | 73 | struct pinctrl *pinctrl; |
842afc02 | 74 | struct esdhc_platform_data boarddata; |
52dac615 SH |
75 | struct clk *clk_ipg; |
76 | struct clk *clk_ahb; | |
77 | struct clk *clk_per; | |
e149860d RZ |
78 | }; |
79 | ||
57ed3314 SG |
80 | static struct platform_device_id imx_esdhc_devtype[] = { |
81 | { | |
82 | .name = "sdhci-esdhc-imx25", | |
83 | .driver_data = IMX25_ESDHC, | |
84 | }, { | |
85 | .name = "sdhci-esdhc-imx35", | |
86 | .driver_data = IMX35_ESDHC, | |
87 | }, { | |
88 | .name = "sdhci-esdhc-imx51", | |
89 | .driver_data = IMX51_ESDHC, | |
90 | }, { | |
91 | .name = "sdhci-esdhc-imx53", | |
92 | .driver_data = IMX53_ESDHC, | |
95a2482a SG |
93 | }, { |
94 | .name = "sdhci-usdhc-imx6q", | |
95 | .driver_data = IMX6Q_USDHC, | |
57ed3314 SG |
96 | }, { |
97 | /* sentinel */ | |
98 | } | |
99 | }; | |
100 | MODULE_DEVICE_TABLE(platform, imx_esdhc_devtype); | |
101 | ||
abfafc2d SG |
102 | static const struct of_device_id imx_esdhc_dt_ids[] = { |
103 | { .compatible = "fsl,imx25-esdhc", .data = &imx_esdhc_devtype[IMX25_ESDHC], }, | |
104 | { .compatible = "fsl,imx35-esdhc", .data = &imx_esdhc_devtype[IMX35_ESDHC], }, | |
105 | { .compatible = "fsl,imx51-esdhc", .data = &imx_esdhc_devtype[IMX51_ESDHC], }, | |
106 | { .compatible = "fsl,imx53-esdhc", .data = &imx_esdhc_devtype[IMX53_ESDHC], }, | |
95a2482a | 107 | { .compatible = "fsl,imx6q-usdhc", .data = &imx_esdhc_devtype[IMX6Q_USDHC], }, |
abfafc2d SG |
108 | { /* sentinel */ } |
109 | }; | |
110 | MODULE_DEVICE_TABLE(of, imx_esdhc_dt_ids); | |
111 | ||
57ed3314 SG |
112 | static inline int is_imx25_esdhc(struct pltfm_imx_data *data) |
113 | { | |
114 | return data->devtype == IMX25_ESDHC; | |
115 | } | |
116 | ||
117 | static inline int is_imx35_esdhc(struct pltfm_imx_data *data) | |
118 | { | |
119 | return data->devtype == IMX35_ESDHC; | |
120 | } | |
121 | ||
122 | static inline int is_imx51_esdhc(struct pltfm_imx_data *data) | |
123 | { | |
124 | return data->devtype == IMX51_ESDHC; | |
125 | } | |
126 | ||
127 | static inline int is_imx53_esdhc(struct pltfm_imx_data *data) | |
128 | { | |
129 | return data->devtype == IMX53_ESDHC; | |
130 | } | |
131 | ||
95a2482a SG |
132 | static inline int is_imx6q_usdhc(struct pltfm_imx_data *data) |
133 | { | |
134 | return data->devtype == IMX6Q_USDHC; | |
135 | } | |
136 | ||
95f25efe WS |
137 | static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, int reg) |
138 | { | |
139 | void __iomem *base = host->ioaddr + (reg & ~0x3); | |
140 | u32 shift = (reg & 0x3) * 8; | |
141 | ||
142 | writel(((readl(base) & ~(mask << shift)) | (val << shift)), base); | |
143 | } | |
144 | ||
7e29c306 WS |
145 | static u32 esdhc_readl_le(struct sdhci_host *host, int reg) |
146 | { | |
7e29c306 WS |
147 | u32 val = readl(host->ioaddr + reg); |
148 | ||
97e4ba6a RZ |
149 | if (unlikely(reg == SDHCI_CAPABILITIES)) { |
150 | /* In FSL esdhc IC module, only bit20 is used to indicate the | |
151 | * ADMA2 capability of esdhc, but this bit is messed up on | |
152 | * some SOCs (e.g. on MX25, MX35 this bit is set, but they | |
153 | * don't actually support ADMA2). So set the BROKEN_ADMA | |
154 | * uirk on MX25/35 platforms. | |
155 | */ | |
156 | ||
157 | if (val & SDHCI_CAN_DO_ADMA1) { | |
158 | val &= ~SDHCI_CAN_DO_ADMA1; | |
159 | val |= SDHCI_CAN_DO_ADMA2; | |
160 | } | |
161 | } | |
162 | ||
163 | if (unlikely(reg == SDHCI_INT_STATUS)) { | |
60bf6396 SG |
164 | if (val & ESDHC_INT_VENDOR_SPEC_DMA_ERR) { |
165 | val &= ~ESDHC_INT_VENDOR_SPEC_DMA_ERR; | |
97e4ba6a RZ |
166 | val |= SDHCI_INT_ADMA_ERROR; |
167 | } | |
168 | } | |
169 | ||
7e29c306 WS |
170 | return val; |
171 | } | |
172 | ||
173 | static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) | |
174 | { | |
e149860d RZ |
175 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
176 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
0d58864b TL |
177 | u32 data; |
178 | ||
179 | if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { | |
0d58864b TL |
180 | if (val & SDHCI_INT_CARD_INT) { |
181 | /* | |
182 | * Clear and then set D3CD bit to avoid missing the | |
183 | * card interrupt. This is a eSDHC controller problem | |
184 | * so we need to apply the following workaround: clear | |
185 | * and set D3CD bit will make eSDHC re-sample the card | |
186 | * interrupt. In case a card interrupt was lost, | |
187 | * re-sample it by the following steps. | |
188 | */ | |
189 | data = readl(host->ioaddr + SDHCI_HOST_CONTROL); | |
60bf6396 | 190 | data &= ~ESDHC_CTRL_D3CD; |
0d58864b | 191 | writel(data, host->ioaddr + SDHCI_HOST_CONTROL); |
60bf6396 | 192 | data |= ESDHC_CTRL_D3CD; |
0d58864b TL |
193 | writel(data, host->ioaddr + SDHCI_HOST_CONTROL); |
194 | } | |
195 | } | |
7e29c306 | 196 | |
58ac8177 RZ |
197 | if (unlikely((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT) |
198 | && (reg == SDHCI_INT_STATUS) | |
199 | && (val & SDHCI_INT_DATA_END))) { | |
200 | u32 v; | |
60bf6396 SG |
201 | v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); |
202 | v &= ~ESDHC_VENDOR_SPEC_SDIO_QUIRK; | |
203 | writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); | |
58ac8177 RZ |
204 | } |
205 | ||
97e4ba6a RZ |
206 | if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) { |
207 | if (val & SDHCI_INT_ADMA_ERROR) { | |
208 | val &= ~SDHCI_INT_ADMA_ERROR; | |
60bf6396 | 209 | val |= ESDHC_INT_VENDOR_SPEC_DMA_ERR; |
97e4ba6a RZ |
210 | } |
211 | } | |
212 | ||
7e29c306 WS |
213 | writel(val, host->ioaddr + reg); |
214 | } | |
215 | ||
95f25efe WS |
216 | static u16 esdhc_readw_le(struct sdhci_host *host, int reg) |
217 | { | |
ef4d0888 SG |
218 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
219 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
220 | ||
95a2482a | 221 | if (unlikely(reg == SDHCI_HOST_VERSION)) { |
ef4d0888 SG |
222 | reg ^= 2; |
223 | if (is_imx6q_usdhc(imx_data)) { | |
224 | /* | |
225 | * The usdhc register returns a wrong host version. | |
226 | * Correct it here. | |
227 | */ | |
228 | return SDHCI_SPEC_300; | |
229 | } | |
95a2482a | 230 | } |
95f25efe WS |
231 | |
232 | return readw(host->ioaddr + reg); | |
233 | } | |
234 | ||
235 | static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) | |
236 | { | |
237 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
e149860d | 238 | struct pltfm_imx_data *imx_data = pltfm_host->priv; |
95f25efe WS |
239 | |
240 | switch (reg) { | |
241 | case SDHCI_TRANSFER_MODE: | |
58ac8177 RZ |
242 | if ((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT) |
243 | && (host->cmd->opcode == SD_IO_RW_EXTENDED) | |
244 | && (host->cmd->data->blocks > 1) | |
245 | && (host->cmd->data->flags & MMC_DATA_READ)) { | |
246 | u32 v; | |
60bf6396 SG |
247 | v = readl(host->ioaddr + ESDHC_VENDOR_SPEC); |
248 | v |= ESDHC_VENDOR_SPEC_SDIO_QUIRK; | |
249 | writel(v, host->ioaddr + ESDHC_VENDOR_SPEC); | |
58ac8177 | 250 | } |
69f54698 SG |
251 | |
252 | if (is_imx6q_usdhc(imx_data)) { | |
253 | u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL); | |
254 | m = val | (m & 0xffff0000); | |
255 | writel(m, host->ioaddr + ESDHC_MIX_CTRL); | |
256 | } else { | |
257 | /* | |
258 | * Postpone this write, we must do it together with a | |
259 | * command write that is down below. | |
260 | */ | |
261 | imx_data->scratchpad = val; | |
262 | } | |
95f25efe WS |
263 | return; |
264 | case SDHCI_COMMAND: | |
5b6b0ad6 SH |
265 | if ((host->cmd->opcode == MMC_STOP_TRANSMISSION || |
266 | host->cmd->opcode == MMC_SET_BLOCK_COUNT) && | |
267 | (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) | |
58ac8177 | 268 | val |= SDHCI_CMD_ABORTCMD; |
95a2482a | 269 | |
69f54698 | 270 | if (is_imx6q_usdhc(imx_data)) |
95a2482a SG |
271 | writel(val << 16, |
272 | host->ioaddr + SDHCI_TRANSFER_MODE); | |
69f54698 | 273 | else |
95a2482a SG |
274 | writel(val << 16 | imx_data->scratchpad, |
275 | host->ioaddr + SDHCI_TRANSFER_MODE); | |
95f25efe WS |
276 | return; |
277 | case SDHCI_BLOCK_SIZE: | |
278 | val &= ~SDHCI_MAKE_BLKSZ(0x7, 0); | |
279 | break; | |
280 | } | |
281 | esdhc_clrset_le(host, 0xffff, val, reg); | |
282 | } | |
283 | ||
284 | static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg) | |
285 | { | |
9a0985b7 WC |
286 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
287 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
95f25efe WS |
288 | u32 new_val; |
289 | ||
290 | switch (reg) { | |
291 | case SDHCI_POWER_CONTROL: | |
292 | /* | |
293 | * FSL put some DMA bits here | |
294 | * If your board has a regulator, code should be here | |
295 | */ | |
296 | return; | |
297 | case SDHCI_HOST_CONTROL: | |
6b40d182 SG |
298 | /* FSL messed up here, so we need to manually compose it. */ |
299 | new_val = val & (SDHCI_CTRL_LED | SDHCI_CTRL_4BITBUS); | |
7122bbb0 | 300 | /* ensure the endianness */ |
95f25efe | 301 | new_val |= ESDHC_HOST_CONTROL_LE; |
9a0985b7 WC |
302 | /* bits 8&9 are reserved on mx25 */ |
303 | if (!is_imx25_esdhc(imx_data)) { | |
304 | /* DMA mode bits are shifted */ | |
305 | new_val |= (val & SDHCI_CTRL_DMA_MASK) << 5; | |
306 | } | |
95f25efe WS |
307 | |
308 | esdhc_clrset_le(host, 0xffff, new_val, reg); | |
309 | return; | |
310 | } | |
311 | esdhc_clrset_le(host, 0xff, val, reg); | |
913413c3 SG |
312 | |
313 | /* | |
314 | * The esdhc has a design violation to SDHC spec which tells | |
315 | * that software reset should not affect card detection circuit. | |
316 | * But esdhc clears its SYSCTL register bits [0..2] during the | |
317 | * software reset. This will stop those clocks that card detection | |
318 | * circuit relies on. To work around it, we turn the clocks on back | |
319 | * to keep card detection circuit functional. | |
320 | */ | |
58c8c4fb | 321 | if ((reg == SDHCI_SOFTWARE_RESET) && (val & 1)) { |
913413c3 | 322 | esdhc_clrset_le(host, 0x7, 0x7, ESDHC_SYSTEM_CONTROL); |
58c8c4fb SG |
323 | /* |
324 | * The reset on usdhc fails to clear MIX_CTRL register. | |
325 | * Do it manually here. | |
326 | */ | |
327 | if (is_imx6q_usdhc(imx_data)) | |
328 | writel(0, host->ioaddr + ESDHC_MIX_CTRL); | |
329 | } | |
95f25efe WS |
330 | } |
331 | ||
332 | static unsigned int esdhc_pltfm_get_max_clock(struct sdhci_host *host) | |
333 | { | |
334 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
335 | ||
336 | return clk_get_rate(pltfm_host->clk); | |
337 | } | |
338 | ||
339 | static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host) | |
340 | { | |
341 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); | |
342 | ||
343 | return clk_get_rate(pltfm_host->clk) / 256 / 16; | |
344 | } | |
345 | ||
913413c3 SG |
346 | static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) |
347 | { | |
842afc02 SG |
348 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
349 | struct pltfm_imx_data *imx_data = pltfm_host->priv; | |
350 | struct esdhc_platform_data *boarddata = &imx_data->boarddata; | |
913413c3 SG |
351 | |
352 | switch (boarddata->wp_type) { | |
353 | case ESDHC_WP_GPIO: | |
fbe5fdd1 | 354 | return mmc_gpio_get_ro(host->mmc); |
913413c3 SG |
355 | case ESDHC_WP_CONTROLLER: |
356 | return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) & | |
357 | SDHCI_WRITE_PROTECT); | |
358 | case ESDHC_WP_NONE: | |
359 | break; | |
360 | } | |
361 | ||
362 | return -ENOSYS; | |
363 | } | |
364 | ||
0c6d49ce | 365 | static struct sdhci_ops sdhci_esdhc_ops = { |
e149860d | 366 | .read_l = esdhc_readl_le, |
0c6d49ce | 367 | .read_w = esdhc_readw_le, |
e149860d | 368 | .write_l = esdhc_writel_le, |
0c6d49ce WS |
369 | .write_w = esdhc_writew_le, |
370 | .write_b = esdhc_writeb_le, | |
371 | .set_clock = esdhc_set_clock, | |
372 | .get_max_clock = esdhc_pltfm_get_max_clock, | |
373 | .get_min_clock = esdhc_pltfm_get_min_clock, | |
913413c3 | 374 | .get_ro = esdhc_pltfm_get_ro, |
0c6d49ce WS |
375 | }; |
376 | ||
85d6509d | 377 | static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { |
97e4ba6a RZ |
378 | .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_NO_HISPD_BIT |
379 | | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | |
380 | | SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | |
85d6509d | 381 | | SDHCI_QUIRK_BROKEN_CARD_DETECTION, |
85d6509d SG |
382 | .ops = &sdhci_esdhc_ops, |
383 | }; | |
384 | ||
abfafc2d | 385 | #ifdef CONFIG_OF |
c3be1efd | 386 | static int |
abfafc2d SG |
387 | sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, |
388 | struct esdhc_platform_data *boarddata) | |
389 | { | |
390 | struct device_node *np = pdev->dev.of_node; | |
391 | ||
392 | if (!np) | |
393 | return -ENODEV; | |
394 | ||
7f217794 | 395 | if (of_get_property(np, "non-removable", NULL)) |
abfafc2d SG |
396 | boarddata->cd_type = ESDHC_CD_PERMANENT; |
397 | ||
398 | if (of_get_property(np, "fsl,cd-controller", NULL)) | |
399 | boarddata->cd_type = ESDHC_CD_CONTROLLER; | |
400 | ||
401 | if (of_get_property(np, "fsl,wp-controller", NULL)) | |
402 | boarddata->wp_type = ESDHC_WP_CONTROLLER; | |
403 | ||
404 | boarddata->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); | |
405 | if (gpio_is_valid(boarddata->cd_gpio)) | |
406 | boarddata->cd_type = ESDHC_CD_GPIO; | |
407 | ||
408 | boarddata->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); | |
409 | if (gpio_is_valid(boarddata->wp_gpio)) | |
410 | boarddata->wp_type = ESDHC_WP_GPIO; | |
411 | ||
412 | return 0; | |
413 | } | |
414 | #else | |
415 | static inline int | |
416 | sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, | |
417 | struct esdhc_platform_data *boarddata) | |
418 | { | |
419 | return -ENODEV; | |
420 | } | |
421 | #endif | |
422 | ||
c3be1efd | 423 | static int sdhci_esdhc_imx_probe(struct platform_device *pdev) |
95f25efe | 424 | { |
abfafc2d SG |
425 | const struct of_device_id *of_id = |
426 | of_match_device(imx_esdhc_dt_ids, &pdev->dev); | |
85d6509d SG |
427 | struct sdhci_pltfm_host *pltfm_host; |
428 | struct sdhci_host *host; | |
429 | struct esdhc_platform_data *boarddata; | |
0c6d49ce | 430 | int err; |
e149860d | 431 | struct pltfm_imx_data *imx_data; |
95f25efe | 432 | |
85d6509d SG |
433 | host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata); |
434 | if (IS_ERR(host)) | |
435 | return PTR_ERR(host); | |
436 | ||
437 | pltfm_host = sdhci_priv(host); | |
438 | ||
e3af31c6 | 439 | imx_data = devm_kzalloc(&pdev->dev, sizeof(*imx_data), GFP_KERNEL); |
abfafc2d SG |
440 | if (!imx_data) { |
441 | err = -ENOMEM; | |
e3af31c6 | 442 | goto free_sdhci; |
abfafc2d | 443 | } |
57ed3314 | 444 | |
abfafc2d SG |
445 | if (of_id) |
446 | pdev->id_entry = of_id->data; | |
57ed3314 | 447 | imx_data->devtype = pdev->id_entry->driver_data; |
85d6509d SG |
448 | pltfm_host->priv = imx_data; |
449 | ||
52dac615 SH |
450 | imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); |
451 | if (IS_ERR(imx_data->clk_ipg)) { | |
452 | err = PTR_ERR(imx_data->clk_ipg); | |
e3af31c6 | 453 | goto free_sdhci; |
95f25efe | 454 | } |
52dac615 SH |
455 | |
456 | imx_data->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); | |
457 | if (IS_ERR(imx_data->clk_ahb)) { | |
458 | err = PTR_ERR(imx_data->clk_ahb); | |
e3af31c6 | 459 | goto free_sdhci; |
52dac615 SH |
460 | } |
461 | ||
462 | imx_data->clk_per = devm_clk_get(&pdev->dev, "per"); | |
463 | if (IS_ERR(imx_data->clk_per)) { | |
464 | err = PTR_ERR(imx_data->clk_per); | |
e3af31c6 | 465 | goto free_sdhci; |
52dac615 SH |
466 | } |
467 | ||
468 | pltfm_host->clk = imx_data->clk_per; | |
469 | ||
470 | clk_prepare_enable(imx_data->clk_per); | |
471 | clk_prepare_enable(imx_data->clk_ipg); | |
472 | clk_prepare_enable(imx_data->clk_ahb); | |
95f25efe | 473 | |
e62d8b8f DA |
474 | imx_data->pinctrl = devm_pinctrl_get_select_default(&pdev->dev); |
475 | if (IS_ERR(imx_data->pinctrl)) { | |
476 | err = PTR_ERR(imx_data->pinctrl); | |
e3af31c6 | 477 | goto disable_clk; |
e62d8b8f DA |
478 | } |
479 | ||
b8915282 | 480 | host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; |
37865fe9 | 481 | |
57ed3314 | 482 | if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data)) |
0c6d49ce | 483 | /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */ |
97e4ba6a RZ |
484 | host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK |
485 | | SDHCI_QUIRK_BROKEN_ADMA; | |
0c6d49ce | 486 | |
57ed3314 | 487 | if (is_imx53_esdhc(imx_data)) |
58ac8177 RZ |
488 | imx_data->flags |= ESDHC_FLAG_MULTIBLK_NO_INT; |
489 | ||
f750ba9b SG |
490 | /* |
491 | * The imx6q ROM code will change the default watermark level setting | |
492 | * to something insane. Change it back here. | |
493 | */ | |
494 | if (is_imx6q_usdhc(imx_data)) | |
60bf6396 | 495 | writel(0x08100810, host->ioaddr + ESDHC_WTMK_LVL); |
f750ba9b | 496 | |
842afc02 | 497 | boarddata = &imx_data->boarddata; |
abfafc2d SG |
498 | if (sdhci_esdhc_imx_probe_dt(pdev, boarddata) < 0) { |
499 | if (!host->mmc->parent->platform_data) { | |
500 | dev_err(mmc_dev(host->mmc), "no board data!\n"); | |
501 | err = -EINVAL; | |
e3af31c6 | 502 | goto disable_clk; |
abfafc2d SG |
503 | } |
504 | imx_data->boarddata = *((struct esdhc_platform_data *) | |
505 | host->mmc->parent->platform_data); | |
506 | } | |
913413c3 SG |
507 | |
508 | /* write_protect */ | |
509 | if (boarddata->wp_type == ESDHC_WP_GPIO) { | |
fbe5fdd1 | 510 | err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio); |
0c6d49ce | 511 | if (err) { |
fbe5fdd1 SG |
512 | dev_err(mmc_dev(host->mmc), |
513 | "failed to request write-protect gpio!\n"); | |
514 | goto disable_clk; | |
0c6d49ce | 515 | } |
fbe5fdd1 | 516 | host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; |
913413c3 SG |
517 | } |
518 | ||
519 | /* card_detect */ | |
913413c3 SG |
520 | switch (boarddata->cd_type) { |
521 | case ESDHC_CD_GPIO: | |
fbe5fdd1 | 522 | err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio); |
7e29c306 | 523 | if (err) { |
913413c3 | 524 | dev_err(mmc_dev(host->mmc), |
fbe5fdd1 | 525 | "failed to request card-detect gpio!\n"); |
e3af31c6 | 526 | goto disable_clk; |
7e29c306 | 527 | } |
913413c3 | 528 | /* fall through */ |
7e29c306 | 529 | |
913413c3 SG |
530 | case ESDHC_CD_CONTROLLER: |
531 | /* we have a working card_detect back */ | |
7e29c306 | 532 | host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; |
913413c3 SG |
533 | break; |
534 | ||
535 | case ESDHC_CD_PERMANENT: | |
536 | host->mmc->caps = MMC_CAP_NONREMOVABLE; | |
537 | break; | |
538 | ||
539 | case ESDHC_CD_NONE: | |
540 | break; | |
0c6d49ce | 541 | } |
16a790bc | 542 | |
85d6509d SG |
543 | err = sdhci_add_host(host); |
544 | if (err) | |
e3af31c6 | 545 | goto disable_clk; |
85d6509d | 546 | |
95f25efe | 547 | return 0; |
7e29c306 | 548 | |
e3af31c6 | 549 | disable_clk: |
52dac615 SH |
550 | clk_disable_unprepare(imx_data->clk_per); |
551 | clk_disable_unprepare(imx_data->clk_ipg); | |
552 | clk_disable_unprepare(imx_data->clk_ahb); | |
e3af31c6 | 553 | free_sdhci: |
85d6509d SG |
554 | sdhci_pltfm_free(pdev); |
555 | return err; | |
95f25efe WS |
556 | } |
557 | ||
6e0ee714 | 558 | static int sdhci_esdhc_imx_remove(struct platform_device *pdev) |
95f25efe | 559 | { |
85d6509d | 560 | struct sdhci_host *host = platform_get_drvdata(pdev); |
95f25efe | 561 | struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); |
e149860d | 562 | struct pltfm_imx_data *imx_data = pltfm_host->priv; |
85d6509d SG |
563 | int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); |
564 | ||
565 | sdhci_remove_host(host, dead); | |
0c6d49ce | 566 | |
52dac615 SH |
567 | clk_disable_unprepare(imx_data->clk_per); |
568 | clk_disable_unprepare(imx_data->clk_ipg); | |
569 | clk_disable_unprepare(imx_data->clk_ahb); | |
570 | ||
85d6509d SG |
571 | sdhci_pltfm_free(pdev); |
572 | ||
573 | return 0; | |
95f25efe WS |
574 | } |
575 | ||
85d6509d SG |
576 | static struct platform_driver sdhci_esdhc_imx_driver = { |
577 | .driver = { | |
578 | .name = "sdhci-esdhc-imx", | |
579 | .owner = THIS_MODULE, | |
abfafc2d | 580 | .of_match_table = imx_esdhc_dt_ids, |
29495aa0 | 581 | .pm = SDHCI_PLTFM_PMOPS, |
85d6509d | 582 | }, |
57ed3314 | 583 | .id_table = imx_esdhc_devtype, |
85d6509d | 584 | .probe = sdhci_esdhc_imx_probe, |
0433c143 | 585 | .remove = sdhci_esdhc_imx_remove, |
95f25efe | 586 | }; |
85d6509d | 587 | |
d1f81a64 | 588 | module_platform_driver(sdhci_esdhc_imx_driver); |
85d6509d SG |
589 | |
590 | MODULE_DESCRIPTION("SDHCI driver for Freescale i.MX eSDHC"); | |
591 | MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>"); | |
592 | MODULE_LICENSE("GPL v2"); |