projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> |
| b6147490 | 21 | #include <linux/pagemap.h> |
| df3ef2d3 | 22 | #include <linux/spinlock.h> |
| b6147490 | 23 | |
| b6147490 | 24 | /* Definitions for values the CTRL_SDIO_STATUS register can take. */ |
| cba179ae | 25 | #define TMIO_SDIO_STAT_IOIRQ 0x0001 |
| b6147490 | 26 | #define TMIO_SDIO_STAT_EXPUB52 0x4000 |
| cba179ae SH |
27 | #define TMIO_SDIO_STAT_EXWT 0x8000 |
| 28 | #define TMIO_SDIO_MASK_ALL 0xc007 | |
| b6147490 GL |
29 | |
| 30 | /* Define some IRQ masks */ | |
| 31 | /* This is the mask used at reset by the chip */ | |
| 32 | #define TMIO_MASK_ALL 0x837f031d | |
| 33 | #define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND) | |
| 34 | #define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND) | |
| 35 | #define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \ | |
| 36 | TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT) | |
| 37 | #define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD) | |
| 38 | ||
| 39 | struct tmio_mmc_data; | |
| 40 | ||
| 41 | struct tmio_mmc_host { | |
| 42 | void __iomem *ctl; | |
| 43 | unsigned long bus_shift; | |
| 44 | struct mmc_command *cmd; | |
| 45 | struct mmc_request *mrq; | |
| 46 | struct mmc_data *data; | |
| 47 | struct mmc_host *mmc; | |
| 48 | int irq; | |
| 49 | unsigned int sdio_irq_enabled; | |
| 50 | ||
| 51 | /* Callbacks for clock / power control */ | |
| 52 | void (*set_pwr)(struct platform_device *host, int state); | |
| 53 | void (*set_clk_div)(struct platform_device *host, int state); | |
| 54 | ||
| e6ee7182 GL |
55 | int pm_error; |
| 56 | ||
| b6147490 GL |
57 | /* pio related stuff */ |
| 58 | struct scatterlist *sg_ptr; | |
| 59 | struct scatterlist *sg_orig; | |
| 60 | unsigned int sg_len; | |
| 61 | unsigned int sg_off; | |
| 62 | ||
| 63 | struct platform_device *pdev; | |
| 64 | struct tmio_mmc_data *pdata; | |
| 65 | ||
| 66 | /* DMA support */ | |
| 67 | bool force_pio; | |
| 68 | struct dma_chan *chan_rx; | |
| 69 | struct dma_chan *chan_tx; | |
| 70 | struct tasklet_struct dma_complete; | |
| 71 | struct tasklet_struct dma_issue; | |
| 72 | struct scatterlist bounce_sg; | |
| 73 | u8 *bounce_buf; | |
| 74 | ||
| 75 | /* Track lost interrupts */ | |
| 76 | struct delayed_work delayed_reset_work; | |
| 77 | spinlock_t lock; | |
| 78 | unsigned long last_req_ts; | |
| 79 | }; | |
| 80 | ||
| 81 | int tmio_mmc_host_probe(struct tmio_mmc_host **host, | |
| 82 | struct platform_device *pdev, | |
| 83 | struct tmio_mmc_data *pdata); | |
| 84 | void tmio_mmc_host_remove(struct tmio_mmc_host *host); | |
| 85 | void tmio_mmc_do_data_irq(struct tmio_mmc_host *host); | |
| 86 | ||
| 87 | void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i); | |
| 88 | void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i); | |
| 89 | ||
| 90 | static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, | |
| 91 | unsigned long *flags) | |
| 92 | { | |
| 93 | local_irq_save(*flags); | |
| 94 | return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; | |
| 95 | } | |
| 96 | ||
| 97 | static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, | |
| 98 | unsigned long *flags, void *virt) | |
| 99 | { | |
| 100 | kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ); | |
| 101 | local_irq_restore(*flags); | |
| 102 | } | |
| 103 | ||
| 42051e8a | 104 | #if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) |
| b6147490 GL |
105 | void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); |
| 106 | void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); | |
| 107 | void tmio_mmc_release_dma(struct tmio_mmc_host *host); | |
| 108 | #else | |
| 109 | static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, | |
| 110 | struct mmc_data *data) | |
| 111 | { | |
| 112 | } | |
| 113 | ||
| 114 | static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, | |
| 115 | struct tmio_mmc_data *pdata) | |
| 116 | { | |
| 117 | host->chan_tx = NULL; | |
| 118 | host->chan_rx = NULL; | |
| 119 | } | |
| 120 | ||
| 121 | static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host) | |
| 122 | { | |
| 123 | } | |
| 124 | #endif | |
| 125 | ||
| e6ee7182 GL |
126 | #ifdef CONFIG_PM |
| 127 | int tmio_mmc_host_suspend(struct device *dev); | |
| 128 | int tmio_mmc_host_resume(struct device *dev); | |
| 129 | #else | |
| 130 | #define tmio_mmc_host_suspend NULL | |
| 131 | #define tmio_mmc_host_resume NULL | |
| 132 | #endif | |
| 133 | ||
| b6147490 | 134 | #endif |