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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  linux/drivers/mmc/host/mmci.h - ARM PrimeCell MMCI PL180/1 driver
4  *
5  *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
6  */
7 #define MMCIPOWER		0x000
8 #define MCI_PWR_OFF		0x00
9 #define MCI_PWR_UP		0x02
10 #define MCI_PWR_ON		0x03
11 #define MCI_OD			(1 << 6)
12 #define MCI_ROD			(1 << 7)
13 /*
14  * The ST Micro version does not have ROD and reuse the voltage registers for
15  * direction settings.
16  */
17 #define MCI_ST_DATA2DIREN	(1 << 2)
18 #define MCI_ST_CMDDIREN		(1 << 3)
19 #define MCI_ST_DATA0DIREN	(1 << 4)
20 #define MCI_ST_DATA31DIREN	(1 << 5)
21 #define MCI_ST_FBCLKEN		(1 << 7)
22 #define MCI_ST_DATA74DIREN	(1 << 8)
23 /*
24  * The STM32 sdmmc does not have PWR_UP/OD/ROD
25  * and uses the power register for
26  */
27 #define MCI_STM32_PWR_CYC	0x02
28 #define MCI_STM32_VSWITCH	BIT(2)
29 #define MCI_STM32_VSWITCHEN	BIT(3)
30 #define MCI_STM32_DIRPOL	BIT(4)
31 
32 #define MMCICLOCK		0x004
33 #define MCI_CLK_ENABLE		(1 << 8)
34 #define MCI_CLK_PWRSAVE		(1 << 9)
35 #define MCI_CLK_BYPASS		(1 << 10)
36 #define MCI_4BIT_BUS		(1 << 11)
37 /*
38  * 8bit wide buses, hardware flow contronl, negative edges and clock inversion
39  * supported in ST Micro U300 and Ux500 versions
40  */
41 #define MCI_ST_8BIT_BUS		(1 << 12)
42 #define MCI_ST_U300_HWFCEN	(1 << 13)
43 #define MCI_ST_UX500_NEG_EDGE	(1 << 13)
44 #define MCI_ST_UX500_HWFCEN	(1 << 14)
45 #define MCI_ST_UX500_CLK_INV	(1 << 15)
46 /* Modified PL180 on Versatile Express platform */
47 #define MCI_ARM_HWFCEN		(1 << 12)
48 
49 /* Modified on Qualcomm Integrations */
50 #define MCI_QCOM_CLK_WIDEBUS_8	(BIT(10) | BIT(11))
51 #define MCI_QCOM_CLK_FLOWENA	BIT(12)
52 #define MCI_QCOM_CLK_INVERTOUT	BIT(13)
53 
54 /* select in latch data and command in */
55 #define MCI_QCOM_CLK_SELECT_IN_FBCLK	BIT(15)
56 #define MCI_QCOM_CLK_SELECT_IN_DDR_MODE	(BIT(14) | BIT(15))
57 
58 /* Modified on STM32 sdmmc */
59 #define MCI_STM32_CLK_CLKDIV_MSK	GENMASK(9, 0)
60 #define MCI_STM32_CLK_WIDEBUS_4		BIT(14)
61 #define MCI_STM32_CLK_WIDEBUS_8		BIT(15)
62 #define MCI_STM32_CLK_NEGEDGE		BIT(16)
63 #define MCI_STM32_CLK_HWFCEN		BIT(17)
64 #define MCI_STM32_CLK_DDR		BIT(18)
65 #define MCI_STM32_CLK_BUSSPEED		BIT(19)
66 #define MCI_STM32_CLK_SEL_MSK		GENMASK(21, 20)
67 #define MCI_STM32_CLK_SELCK		(0 << 20)
68 #define MCI_STM32_CLK_SELCKIN		(1 << 20)
69 #define MCI_STM32_CLK_SELFBCK		(2 << 20)
70 
71 #define MMCIARGUMENT		0x008
72 
73 /* The command register controls the Command Path State Machine (CPSM) */
74 #define MMCICOMMAND		0x00c
75 #define MCI_CPSM_RESPONSE	BIT(6)
76 #define MCI_CPSM_LONGRSP	BIT(7)
77 #define MCI_CPSM_INTERRUPT	BIT(8)
78 #define MCI_CPSM_PENDING	BIT(9)
79 #define MCI_CPSM_ENABLE		BIT(10)
80 /* Command register flag extenstions in the ST Micro versions */
81 #define MCI_CPSM_ST_SDIO_SUSP		BIT(11)
82 #define MCI_CPSM_ST_ENCMD_COMPL		BIT(12)
83 #define MCI_CPSM_ST_NIEN		BIT(13)
84 #define MCI_CPSM_ST_CE_ATACMD		BIT(14)
85 /* Command register flag extensions in the Qualcomm versions */
86 #define MCI_CPSM_QCOM_PROGENA		BIT(11)
87 #define MCI_CPSM_QCOM_DATCMD		BIT(12)
88 #define MCI_CPSM_QCOM_MCIABORT		BIT(13)
89 #define MCI_CPSM_QCOM_CCSENABLE		BIT(14)
90 #define MCI_CPSM_QCOM_CCSDISABLE	BIT(15)
91 #define MCI_CPSM_QCOM_AUTO_CMD19	BIT(16)
92 #define MCI_CPSM_QCOM_AUTO_CMD21	BIT(21)
93 /* Command register in STM32 sdmmc versions */
94 #define MCI_CPSM_STM32_CMDTRANS		BIT(6)
95 #define MCI_CPSM_STM32_CMDSTOP		BIT(7)
96 #define MCI_CPSM_STM32_WAITRESP_MASK	GENMASK(9, 8)
97 #define MCI_CPSM_STM32_NORSP		(0 << 8)
98 #define MCI_CPSM_STM32_SRSP_CRC		(1 << 8)
99 #define MCI_CPSM_STM32_SRSP		(2 << 8)
100 #define MCI_CPSM_STM32_LRSP_CRC		(3 << 8)
101 #define MCI_CPSM_STM32_ENABLE		BIT(12)
102 
103 #define MMCIRESPCMD		0x010
104 #define MMCIRESPONSE0		0x014
105 #define MMCIRESPONSE1		0x018
106 #define MMCIRESPONSE2		0x01c
107 #define MMCIRESPONSE3		0x020
108 #define MMCIDATATIMER		0x024
109 #define MMCIDATALENGTH		0x028
110 
111 /* The data control register controls the Data Path State Machine (DPSM) */
112 #define MMCIDATACTRL		0x02c
113 #define MCI_DPSM_ENABLE		BIT(0)
114 #define MCI_DPSM_DIRECTION	BIT(1)
115 #define MCI_DPSM_MODE		BIT(2)
116 #define MCI_DPSM_DMAENABLE	BIT(3)
117 #define MCI_DPSM_BLOCKSIZE	BIT(4)
118 /* Control register extensions in the ST Micro U300 and Ux500 versions */
119 #define MCI_DPSM_ST_RWSTART	BIT(8)
120 #define MCI_DPSM_ST_RWSTOP	BIT(9)
121 #define MCI_DPSM_ST_RWMOD	BIT(10)
122 #define MCI_DPSM_ST_SDIOEN	BIT(11)
123 /* Control register extensions in the ST Micro Ux500 versions */
124 #define MCI_DPSM_ST_DMAREQCTL	BIT(12)
125 #define MCI_DPSM_ST_DBOOTMODEEN	BIT(13)
126 #define MCI_DPSM_ST_BUSYMODE	BIT(14)
127 #define MCI_DPSM_ST_DDRMODE	BIT(15)
128 /* Control register extensions in the Qualcomm versions */
129 #define MCI_DPSM_QCOM_DATA_PEND	BIT(17)
130 #define MCI_DPSM_QCOM_RX_DATA_PEND BIT(20)
131 /* Control register extensions in STM32 versions */
132 #define MCI_DPSM_STM32_MODE_BLOCK	(0 << 2)
133 #define MCI_DPSM_STM32_MODE_SDIO	(1 << 2)
134 #define MCI_DPSM_STM32_MODE_STREAM	(2 << 2)
135 #define MCI_DPSM_STM32_MODE_BLOCK_STOP	(3 << 2)
136 
137 #define MMCIDATACNT		0x030
138 #define MMCISTATUS		0x034
139 #define MCI_CMDCRCFAIL		(1 << 0)
140 #define MCI_DATACRCFAIL		(1 << 1)
141 #define MCI_CMDTIMEOUT		(1 << 2)
142 #define MCI_DATATIMEOUT		(1 << 3)
143 #define MCI_TXUNDERRUN		(1 << 4)
144 #define MCI_RXOVERRUN		(1 << 5)
145 #define MCI_CMDRESPEND		(1 << 6)
146 #define MCI_CMDSENT		(1 << 7)
147 #define MCI_DATAEND		(1 << 8)
148 #define MCI_STARTBITERR		(1 << 9)
149 #define MCI_DATABLOCKEND	(1 << 10)
150 #define MCI_CMDACTIVE		(1 << 11)
151 #define MCI_TXACTIVE		(1 << 12)
152 #define MCI_RXACTIVE		(1 << 13)
153 #define MCI_TXFIFOHALFEMPTY	(1 << 14)
154 #define MCI_RXFIFOHALFFULL	(1 << 15)
155 #define MCI_TXFIFOFULL		(1 << 16)
156 #define MCI_RXFIFOFULL		(1 << 17)
157 #define MCI_TXFIFOEMPTY		(1 << 18)
158 #define MCI_RXFIFOEMPTY		(1 << 19)
159 #define MCI_TXDATAAVLBL		(1 << 20)
160 #define MCI_RXDATAAVLBL		(1 << 21)
161 /* Extended status bits for the ST Micro variants */
162 #define MCI_ST_SDIOIT		(1 << 22)
163 #define MCI_ST_CEATAEND		(1 << 23)
164 #define MCI_ST_CARDBUSY		(1 << 24)
165 /* Extended status bits for the STM32 variants */
166 #define MCI_STM32_BUSYD0	BIT(20)
167 #define MCI_STM32_BUSYD0END	BIT(21)
168 #define MCI_STM32_VSWEND	BIT(25)
169 
170 #define MMCICLEAR		0x038
171 #define MCI_CMDCRCFAILCLR	(1 << 0)
172 #define MCI_DATACRCFAILCLR	(1 << 1)
173 #define MCI_CMDTIMEOUTCLR	(1 << 2)
174 #define MCI_DATATIMEOUTCLR	(1 << 3)
175 #define MCI_TXUNDERRUNCLR	(1 << 4)
176 #define MCI_RXOVERRUNCLR	(1 << 5)
177 #define MCI_CMDRESPENDCLR	(1 << 6)
178 #define MCI_CMDSENTCLR		(1 << 7)
179 #define MCI_DATAENDCLR		(1 << 8)
180 #define MCI_STARTBITERRCLR	(1 << 9)
181 #define MCI_DATABLOCKENDCLR	(1 << 10)
182 /* Extended status bits for the ST Micro variants */
183 #define MCI_ST_SDIOITC		(1 << 22)
184 #define MCI_ST_CEATAENDC	(1 << 23)
185 #define MCI_ST_BUSYENDC		(1 << 24)
186 /* Extended clear bits for the STM32 variants */
187 #define MCI_STM32_VSWENDC	BIT(25)
188 #define MCI_STM32_CKSTOPC	BIT(26)
189 
190 #define MMCIMASK0		0x03c
191 #define MCI_CMDCRCFAILMASK	(1 << 0)
192 #define MCI_DATACRCFAILMASK	(1 << 1)
193 #define MCI_CMDTIMEOUTMASK	(1 << 2)
194 #define MCI_DATATIMEOUTMASK	(1 << 3)
195 #define MCI_TXUNDERRUNMASK	(1 << 4)
196 #define MCI_RXOVERRUNMASK	(1 << 5)
197 #define MCI_CMDRESPENDMASK	(1 << 6)
198 #define MCI_CMDSENTMASK		(1 << 7)
199 #define MCI_DATAENDMASK		(1 << 8)
200 #define MCI_STARTBITERRMASK	(1 << 9)
201 #define MCI_DATABLOCKENDMASK	(1 << 10)
202 #define MCI_CMDACTIVEMASK	(1 << 11)
203 #define MCI_TXACTIVEMASK	(1 << 12)
204 #define MCI_RXACTIVEMASK	(1 << 13)
205 #define MCI_TXFIFOHALFEMPTYMASK	(1 << 14)
206 #define MCI_RXFIFOHALFFULLMASK	(1 << 15)
207 #define MCI_TXFIFOFULLMASK	(1 << 16)
208 #define MCI_RXFIFOFULLMASK	(1 << 17)
209 #define MCI_TXFIFOEMPTYMASK	(1 << 18)
210 #define MCI_RXFIFOEMPTYMASK	(1 << 19)
211 #define MCI_TXDATAAVLBLMASK	(1 << 20)
212 #define MCI_RXDATAAVLBLMASK	(1 << 21)
213 /* Extended status bits for the ST Micro variants */
214 #define MCI_ST_SDIOITMASK	(1 << 22)
215 #define MCI_ST_CEATAENDMASK	(1 << 23)
216 #define MCI_ST_BUSYENDMASK	(1 << 24)
217 /* Extended status bits for the STM32 variants */
218 #define MCI_STM32_BUSYD0ENDMASK	BIT(21)
219 
220 #define MMCIMASK1		0x040
221 
222 /* STM32 sdmmc data FIFO threshold register */
223 #define MMCI_STM32_FIFOTHRR	0x044
224 #define MMCI_STM32_THR_MASK	GENMASK(3, 0)
225 
226 #define MMCIFIFOCNT		0x048
227 #define MMCIFIFO		0x080 /* to 0x0bc */
228 
229 /* STM32 sdmmc registers for IDMA (Internal DMA) */
230 #define MMCI_STM32_IDMACTRLR	0x050
231 #define MMCI_STM32_IDMAEN	BIT(0)
232 #define MMCI_STM32_IDMALLIEN	BIT(1)
233 
234 #define MMCI_STM32_IDMABSIZER		0x054
235 
236 #define MMCI_STM32_IDMABASE0R	0x058
237 
238 #define MMCI_STM32_IDMALAR	0x64
239 #define MMCI_STM32_IDMALA_MASK	GENMASK(13, 0)
240 #define MMCI_STM32_ABR		BIT(29)
241 #define MMCI_STM32_ULS		BIT(30)
242 #define MMCI_STM32_ULA		BIT(31)
243 
244 #define MMCI_STM32_IDMABAR	0x68
245 
246 #define MCI_IRQENABLE	\
247 	(MCI_CMDCRCFAILMASK | MCI_DATACRCFAILMASK | MCI_CMDTIMEOUTMASK | \
248 	MCI_DATATIMEOUTMASK | MCI_TXUNDERRUNMASK | MCI_RXOVERRUNMASK |	\
249 	MCI_CMDRESPENDMASK | MCI_CMDSENTMASK)
250 
251 /* These interrupts are directed to IRQ1 when two IRQ lines are available */
252 #define MCI_IRQ_PIO_MASK \
253 	(MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
254 	 MCI_TXFIFOHALFEMPTYMASK)
255 
256 #define MCI_IRQ_PIO_STM32_MASK \
257 	(MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK)
258 
259 #define NR_SG		128
260 
261 #define MMCI_PINCTRL_STATE_OPENDRAIN "opendrain"
262 
263 struct clk;
264 struct dma_chan;
265 struct mmci_host;
266 
267 /**
268  * enum mmci_busy_state - enumerate the busy detect wait states
269  *
270  * This is used for the state machine waiting for different busy detect
271  * interrupts on hardware that fire a single IRQ for start and end of
272  * the busy detect phase on DAT0.
273  */
274 enum mmci_busy_state {
275 	MMCI_BUSY_WAITING_FOR_START_IRQ,
276 	MMCI_BUSY_WAITING_FOR_END_IRQ,
277 	MMCI_BUSY_DONE,
278 };
279 
280 /**
281  * struct variant_data - MMCI variant-specific quirks
282  * @clkreg: default value for MCICLOCK register
283  * @clkreg_enable: enable value for MMCICLOCK register
284  * @clkreg_8bit_bus_enable: enable value for 8 bit bus
285  * @clkreg_neg_edge_enable: enable value for inverted data/cmd output
286  * @cmdreg_cpsm_enable: enable value for CPSM
287  * @cmdreg_lrsp_crc: enable value for long response with crc
288  * @cmdreg_srsp_crc: enable value for short response with crc
289  * @cmdreg_srsp: enable value for short response without crc
290  * @cmdreg_stop: enable value for stop and abort transmission
291  * @datalength_bits: number of bits in the MMCIDATALENGTH register
292  * @fifosize: number of bytes that can be written when MMCI_TXFIFOEMPTY
293  *	      is asserted (likewise for RX)
294  * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY
295  *		  is asserted (likewise for RX)
296  * @data_cmd_enable: enable value for data commands.
297  * @st_sdio: enable ST specific SDIO logic
298  * @st_clkdiv: true if using a ST-specific clock divider algorithm
299  * @stm32_clkdiv: true if using a STM32-specific clock divider algorithm
300  * @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
301  * @datactrl_mask_sdio: SDIO enable mask in datactrl register
302  * @datactrl_blocksz: block size in power of two
303  * @datactrl_any_blocksz: true if block any block sizes are accepted by
304  *		  hardware, such as with some SDIO traffic that send
305  *		  odd packets.
306  * @dma_power_of_2: DMA only works with blocks that are a power of 2.
307  * @datactrl_first: true if data must be setup before send command
308  * @datacnt_useless: true if you could not use datacnt register to read
309  *		     remaining data
310  * @pwrreg_powerup: power up value for MMCIPOWER register
311  * @f_max: maximum clk frequency supported by the controller.
312  * @signal_direction: input/out direction of bus signals can be indicated
313  * @pwrreg_clkgate: MMCIPOWER register must be used to gate the clock
314  * @busy_detect: true if the variant supports busy detection on DAT0.
315  * @busy_timeout: true if the variant starts data timer when the DPSM
316  *		  enter in Wait_R or Busy state.
317  * @busy_dpsm_flag: bitmask enabling busy detection in the DPSM
318  * @busy_detect_flag: bitmask identifying the bit in the MMCISTATUS register
319  *		      indicating that the card is busy
320  * @busy_detect_mask: bitmask identifying the bit in the MMCIMASK0 to mask for
321  *		      getting busy end detection interrupts
322  * @pwrreg_nopower: bits in MMCIPOWER don't controls ext. power supply
323  * @explicit_mclk_control: enable explicit mclk control in driver.
324  * @qcom_fifo: enables qcom specific fifo pio read logic.
325  * @qcom_dml: enables qcom specific dma glue for dma transfers.
326  * @reversed_irq_handling: handle data irq before cmd irq.
327  * @mmcimask1: true if variant have a MMCIMASK1 register.
328  * @irq_pio_mask: bitmask used to manage interrupt pio transfert in mmcimask
329  *		  register
330  * @start_err: bitmask identifying the STARTBITERR bit inside MMCISTATUS
331  *	       register.
332  * @opendrain: bitmask identifying the OPENDRAIN bit inside MMCIPOWER register
333  * @dma_lli: true if variant has dma link list feature.
334  * @stm32_idmabsize_mask: stm32 sdmmc idma buffer size.
335  */
336 struct variant_data {
337 	unsigned int		clkreg;
338 	unsigned int		clkreg_enable;
339 	unsigned int		clkreg_8bit_bus_enable;
340 	unsigned int		clkreg_neg_edge_enable;
341 	unsigned int		cmdreg_cpsm_enable;
342 	unsigned int		cmdreg_lrsp_crc;
343 	unsigned int		cmdreg_srsp_crc;
344 	unsigned int		cmdreg_srsp;
345 	unsigned int		cmdreg_stop;
346 	unsigned int		datalength_bits;
347 	unsigned int		fifosize;
348 	unsigned int		fifohalfsize;
349 	unsigned int		data_cmd_enable;
350 	unsigned int		datactrl_mask_ddrmode;
351 	unsigned int		datactrl_mask_sdio;
352 	unsigned int		datactrl_blocksz;
353 	u8			datactrl_any_blocksz:1;
354 	u8			dma_power_of_2:1;
355 	u8			datactrl_first:1;
356 	u8			datacnt_useless:1;
357 	u8			st_sdio:1;
358 	u8			st_clkdiv:1;
359 	u8			stm32_clkdiv:1;
360 	u32			pwrreg_powerup;
361 	u32			f_max;
362 	u8			signal_direction:1;
363 	u8			pwrreg_clkgate:1;
364 	u8			busy_detect:1;
365 	u8			busy_timeout:1;
366 	u32			busy_dpsm_flag;
367 	u32			busy_detect_flag;
368 	u32			busy_detect_mask;
369 	u8			pwrreg_nopower:1;
370 	u8			explicit_mclk_control:1;
371 	u8			qcom_fifo:1;
372 	u8			qcom_dml:1;
373 	u8			reversed_irq_handling:1;
374 	u8			mmcimask1:1;
375 	unsigned int		irq_pio_mask;
376 	u32			start_err;
377 	u32			opendrain;
378 	u8			dma_lli:1;
379 	u32			stm32_idmabsize_mask;
380 	u32			stm32_idmabsize_align;
381 	void (*init)(struct mmci_host *host);
382 };
383 
384 /* mmci variant callbacks */
385 struct mmci_host_ops {
386 	int (*validate_data)(struct mmci_host *host, struct mmc_data *data);
387 	int (*prep_data)(struct mmci_host *host, struct mmc_data *data,
388 			 bool next);
389 	void (*unprep_data)(struct mmci_host *host, struct mmc_data *data,
390 			    int err);
391 	u32 (*get_datactrl_cfg)(struct mmci_host *host);
392 	void (*get_next_data)(struct mmci_host *host, struct mmc_data *data);
393 	int (*dma_setup)(struct mmci_host *host);
394 	void (*dma_release)(struct mmci_host *host);
395 	int (*dma_start)(struct mmci_host *host, unsigned int *datactrl);
396 	void (*dma_finalize)(struct mmci_host *host, struct mmc_data *data);
397 	void (*dma_error)(struct mmci_host *host);
398 	void (*set_clkreg)(struct mmci_host *host, unsigned int desired);
399 	void (*set_pwrreg)(struct mmci_host *host, unsigned int pwr);
400 	bool (*busy_complete)(struct mmci_host *host, struct mmc_command *cmd, u32 status, u32 err_msk);
401 	void (*pre_sig_volt_switch)(struct mmci_host *host);
402 	int (*post_sig_volt_switch)(struct mmci_host *host, struct mmc_ios *ios);
403 };
404 
405 struct mmci_host {
406 	phys_addr_t		phybase;
407 	void __iomem		*base;
408 	struct mmc_request	*mrq;
409 	struct mmc_command	*cmd;
410 	struct mmc_command	stop_abort;
411 	struct mmc_data		*data;
412 	struct mmc_host		*mmc;
413 	struct clk		*clk;
414 	u8			singleirq:1;
415 
416 	struct reset_control	*rst;
417 
418 	spinlock_t		lock;
419 
420 	unsigned int		mclk;
421 	/* cached value of requested clk in set_ios */
422 	unsigned int		clock_cache;
423 	unsigned int		cclk;
424 	u32			pwr_reg;
425 	u32			pwr_reg_add;
426 	u32			clk_reg;
427 	u32			clk_reg_add;
428 	u32			datactrl_reg;
429 	enum mmci_busy_state	busy_state;
430 	u32			busy_status;
431 	u32			mask1_reg;
432 	u8			vqmmc_enabled:1;
433 	struct mmci_platform_data *plat;
434 	struct mmc_host_ops	*mmc_ops;
435 	struct mmci_host_ops	*ops;
436 	struct variant_data	*variant;
437 	void			*variant_priv;
438 	struct pinctrl		*pinctrl;
439 	struct pinctrl_state	*pins_opendrain;
440 
441 	u8			hw_designer;
442 	u8			hw_revision:4;
443 
444 	struct timer_list	timer;
445 	unsigned int		oldstat;
446 	u32			irq_action;
447 
448 	/* pio stuff */
449 	struct sg_mapping_iter	sg_miter;
450 	unsigned int		size;
451 	int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);
452 
453 	u8			use_dma:1;
454 	u8			dma_in_progress:1;
455 	void			*dma_priv;
456 
457 	s32			next_cookie;
458 	struct delayed_work	ux500_busy_timeout_work;
459 };
460 
461 #define dma_inprogress(host)	((host)->dma_in_progress)
462 
463 void mmci_write_clkreg(struct mmci_host *host, u32 clk);
464 void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);
465 
mmci_dctrl_blksz(struct mmci_host * host)466 static inline u32 mmci_dctrl_blksz(struct mmci_host *host)
467 {
468 	return (ffs(host->data->blksz) - 1) << 4;
469 }
470 
471 #ifdef CONFIG_DMA_ENGINE
472 int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data,
473 			bool next);
474 void mmci_dmae_unprep_data(struct mmci_host *host, struct mmc_data *data,
475 			   int err);
476 void mmci_dmae_get_next_data(struct mmci_host *host, struct mmc_data *data);
477 int mmci_dmae_setup(struct mmci_host *host);
478 void mmci_dmae_release(struct mmci_host *host);
479 int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl);
480 void mmci_dmae_finalize(struct mmci_host *host, struct mmc_data *data);
481 void mmci_dmae_error(struct mmci_host *host);
482 #endif
483 
484 #ifdef CONFIG_MMC_QCOM_DML
485 void qcom_variant_init(struct mmci_host *host);
486 #else
qcom_variant_init(struct mmci_host * host)487 static inline void qcom_variant_init(struct mmci_host *host) {}
488 #endif
489 
490 #ifdef CONFIG_MMC_STM32_SDMMC
491 void sdmmc_variant_init(struct mmci_host *host);
492 #else
sdmmc_variant_init(struct mmci_host * host)493 static inline void sdmmc_variant_init(struct mmci_host *host) {}
494 #endif
495