Commit | Line | Data |
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b6147490 GL |
1 | /* |
2 | * linux/drivers/mmc/host/tmio_mmc.h | |
3 | * | |
4 | * Copyright (C) 2007 Ian Molton | |
5 | * Copyright (C) 2004 Ian Molton | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * Driver for the MMC / SD / SDIO cell found in: | |
12 | * | |
13 | * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 | |
14 | */ | |
15 | ||
16 | #ifndef TMIO_MMC_H | |
17 | #define TMIO_MMC_H | |
18 | ||
19 | #include <linux/highmem.h> | |
cba179ae | 20 | #include <linux/mmc/tmio.h> |
b9269fdd | 21 | #include <linux/mutex.h> |
b6147490 | 22 | #include <linux/pagemap.h> |
6c0cbef6 | 23 | #include <linux/scatterlist.h> |
e3de2be7 | 24 | #include <linux/spinlock.h> |
b6147490 | 25 | |
b6147490 | 26 | /* Definitions for values the CTRL_SDIO_STATUS register can take. */ |
cba179ae | 27 | #define TMIO_SDIO_STAT_IOIRQ 0x0001 |
b6147490 | 28 | #define TMIO_SDIO_STAT_EXPUB52 0x4000 |
cba179ae SH |
29 | #define TMIO_SDIO_STAT_EXWT 0x8000 |
30 | #define TMIO_SDIO_MASK_ALL 0xc007 | |
b6147490 GL |
31 | |
32 | /* Define some IRQ masks */ | |
33 | /* This is the mask used at reset by the chip */ | |
34 | #define TMIO_MASK_ALL 0x837f031d | |
35 | #define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND) | |
36 | #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND) | |
37 | #define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \ | |
38 | TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) | |
39 | #define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD) | |
40 | ||
41 | struct tmio_mmc_data; | |
42 | ||
43 | struct tmio_mmc_host { | |
44 | void __iomem *ctl; | |
b6147490 GL |
45 | struct mmc_command *cmd; |
46 | struct mmc_request *mrq; | |
47 | struct mmc_data *data; | |
48 | struct mmc_host *mmc; | |
b6147490 GL |
49 | |
50 | /* Callbacks for clock / power control */ | |
51 | void (*set_pwr)(struct platform_device *host, int state); | |
52 | void (*set_clk_div)(struct platform_device *host, int state); | |
53 | ||
54 | /* pio related stuff */ | |
55 | struct scatterlist *sg_ptr; | |
56 | struct scatterlist *sg_orig; | |
57 | unsigned int sg_len; | |
58 | unsigned int sg_off; | |
59 | ||
60 | struct platform_device *pdev; | |
61 | struct tmio_mmc_data *pdata; | |
62 | ||
63 | /* DMA support */ | |
64 | bool force_pio; | |
65 | struct dma_chan *chan_rx; | |
66 | struct dma_chan *chan_tx; | |
67 | struct tasklet_struct dma_complete; | |
68 | struct tasklet_struct dma_issue; | |
69 | struct scatterlist bounce_sg; | |
70 | u8 *bounce_buf; | |
71 | ||
72 | /* Track lost interrupts */ | |
73 | struct delayed_work delayed_reset_work; | |
b9269fdd GL |
74 | struct work_struct done; |
75 | ||
ae12d250 | 76 | /* Cache */ |
54680fe7 SH |
77 | u32 sdcard_irq_mask; |
78 | u32 sdio_irq_mask; | |
ae12d250 | 79 | unsigned int clk_cache; |
54680fe7 | 80 | |
b9269fdd | 81 | spinlock_t lock; /* protect host private data */ |
b6147490 | 82 | unsigned long last_req_ts; |
b9269fdd | 83 | struct mutex ios_lock; /* protect set_ios() context */ |
2b1ac5c2 | 84 | bool native_hotplug; |
7501c431 | 85 | bool sdio_irq_enabled; |
b6147490 GL |
86 | }; |
87 | ||
88 | int tmio_mmc_host_probe(struct tmio_mmc_host **host, | |
89 | struct platform_device *pdev, | |
90 | struct tmio_mmc_data *pdata); | |
91 | void tmio_mmc_host_remove(struct tmio_mmc_host *host); | |
92 | void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); | |
93 | ||
94 | void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); | |
95 | void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); | |
8e7bfdb3 | 96 | irqreturn_t tmio_mmc_irq(int irq, void *devid); |
7729c7a2 SH |
97 | irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid); |
98 | irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid); | |
99 | irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid); | |
b6147490 GL |
100 | |
101 | static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, | |
102 | unsigned long *flags) | |
103 | { | |
104 | local_irq_save(*flags); | |
482fce99 | 105 | return kmap_atomic(sg_page(sg)) + sg->offset; |
b6147490 GL |
106 | } |
107 | ||
108 | static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, | |
109 | unsigned long *flags, void *virt) | |
110 | { | |
482fce99 | 111 | kunmap_atomic(virt - sg->offset); |
b6147490 GL |
112 | local_irq_restore(*flags); |
113 | } | |
114 | ||
42051e8a | 115 | #if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) |
b6147490 | 116 | void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); |
162f43e3 | 117 | void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable); |
b6147490 GL |
118 | void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); |
119 | void tmio_mmc_release_dma(struct tmio_mmc_host *host); | |
e3de2be7 | 120 | void tmio_mmc_abort_dma(struct tmio_mmc_host *host); |
b6147490 GL |
121 | #else |
122 | static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, | |
123 | struct mmc_data *data) | |
124 | { | |
125 | } | |
126 | ||
162f43e3 GL |
127 | static inline void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) |
128 | { | |
129 | } | |
130 | ||
b6147490 GL |
131 | static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, |
132 | struct tmio_mmc_data *pdata) | |
133 | { | |
134 | host->chan_tx = NULL; | |
135 | host->chan_rx = NULL; | |
136 | } | |
137 | ||
138 | static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host) | |
139 | { | |
140 | } | |
e3de2be7 GL |
141 | |
142 | static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host) | |
143 | { | |
144 | } | |
b6147490 GL |
145 | #endif |
146 | ||
9ade7dbf | 147 | #ifdef CONFIG_PM |
7311bef0 GL |
148 | int tmio_mmc_host_runtime_suspend(struct device *dev); |
149 | int tmio_mmc_host_runtime_resume(struct device *dev); | |
710dec95 | 150 | #endif |
7311bef0 | 151 | |
a11862d3 SH |
152 | static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr) |
153 | { | |
3b159a6e | 154 | return readw(host->ctl + (addr << host->pdata->bus_shift)); |
a11862d3 SH |
155 | } |
156 | ||
157 | static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr, | |
158 | u16 *buf, int count) | |
159 | { | |
3b159a6e | 160 | readsw(host->ctl + (addr << host->pdata->bus_shift), buf, count); |
a11862d3 SH |
161 | } |
162 | ||
163 | static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr) | |
164 | { | |
3b159a6e KM |
165 | return readw(host->ctl + (addr << host->pdata->bus_shift)) | |
166 | readw(host->ctl + ((addr + 2) << host->pdata->bus_shift)) << 16; | |
a11862d3 SH |
167 | } |
168 | ||
169 | static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val) | |
170 | { | |
973ed3af SH |
171 | /* If there is a hook and it returns non-zero then there |
172 | * is an error and the write should be skipped | |
173 | */ | |
174 | if (host->pdata->write16_hook && host->pdata->write16_hook(host, addr)) | |
175 | return; | |
3b159a6e | 176 | writew(val, host->ctl + (addr << host->pdata->bus_shift)); |
a11862d3 SH |
177 | } |
178 | ||
179 | static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr, | |
180 | u16 *buf, int count) | |
181 | { | |
3b159a6e | 182 | writesw(host->ctl + (addr << host->pdata->bus_shift), buf, count); |
a11862d3 SH |
183 | } |
184 | ||
185 | static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val) | |
186 | { | |
3b159a6e KM |
187 | writew(val, host->ctl + (addr << host->pdata->bus_shift)); |
188 | writew(val >> 16, host->ctl + ((addr + 2) << host->pdata->bus_shift)); | |
a11862d3 SH |
189 | } |
190 | ||
191 | ||
b6147490 | 192 | #endif |