xref: /openbmc/linux/include/linux/mfd/tmio.h (revision f0702555)
1 #ifndef MFD_TMIO_H
2 #define MFD_TMIO_H
3 
4 #include <linux/device.h>
5 #include <linux/fb.h>
6 #include <linux/io.h>
7 #include <linux/jiffies.h>
8 #include <linux/mmc/card.h>
9 #include <linux/platform_device.h>
10 #include <linux/pm_runtime.h>
11 
12 #define tmio_ioread8(addr) readb(addr)
13 #define tmio_ioread16(addr) readw(addr)
14 #define tmio_ioread16_rep(r, b, l) readsw(r, b, l)
15 #define tmio_ioread32(addr) \
16 	(((u32) readw((addr))) | (((u32) readw((addr) + 2)) << 16))
17 
18 #define tmio_iowrite8(val, addr) writeb((val), (addr))
19 #define tmio_iowrite16(val, addr) writew((val), (addr))
20 #define tmio_iowrite16_rep(r, b, l) writesw(r, b, l)
21 #define tmio_iowrite32(val, addr) \
22 	do { \
23 	writew((val),       (addr)); \
24 	writew((val) >> 16, (addr) + 2); \
25 	} while (0)
26 
27 #define CNF_CMD     0x04
28 #define CNF_CTL_BASE   0x10
29 #define CNF_INT_PIN  0x3d
30 #define CNF_STOP_CLK_CTL 0x40
31 #define CNF_GCLK_CTL 0x41
32 #define CNF_SD_CLK_MODE 0x42
33 #define CNF_PIN_STATUS 0x44
34 #define CNF_PWR_CTL_1 0x48
35 #define CNF_PWR_CTL_2 0x49
36 #define CNF_PWR_CTL_3 0x4a
37 #define CNF_CARD_DETECT_MODE 0x4c
38 #define CNF_SD_SLOT 0x50
39 #define CNF_EXT_GCLK_CTL_1 0xf0
40 #define CNF_EXT_GCLK_CTL_2 0xf1
41 #define CNF_EXT_GCLK_CTL_3 0xf9
42 #define CNF_SD_LED_EN_1 0xfa
43 #define CNF_SD_LED_EN_2 0xfe
44 
45 #define   SDCREN 0x2   /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/
46 
47 #define sd_config_write8(base, shift, reg, val) \
48 	tmio_iowrite8((val), (base) + ((reg) << (shift)))
49 #define sd_config_write16(base, shift, reg, val) \
50 	tmio_iowrite16((val), (base) + ((reg) << (shift)))
51 #define sd_config_write32(base, shift, reg, val) \
52 	do { \
53 		tmio_iowrite16((val), (base) + ((reg) << (shift)));   \
54 		tmio_iowrite16((val) >> 16, (base) + ((reg + 2) << (shift))); \
55 	} while (0)
56 
57 /* tmio MMC platform flags */
58 #define TMIO_MMC_WRPROTECT_DISABLE	(1 << 0)
59 /*
60  * Some controllers can support a 2-byte block size when the bus width
61  * is configured in 4-bit mode.
62  */
63 #define TMIO_MMC_BLKSZ_2BYTES		(1 << 1)
64 /*
65  * Some controllers can support SDIO IRQ signalling.
66  */
67 #define TMIO_MMC_SDIO_IRQ		(1 << 2)
68 
69 /* Some features are only available or tested on RCar Gen2 or later */
70 #define TMIO_MMC_MIN_RCAR2		(1 << 3)
71 
72 /*
73  * Some controllers require waiting for the SD bus to become
74  * idle before writing to some registers.
75  */
76 #define TMIO_MMC_HAS_IDLE_WAIT		(1 << 4)
77 /*
78  * A GPIO is used for card hotplug detection. We need an extra flag for this,
79  * because 0 is a valid GPIO number too, and requiring users to specify
80  * cd_gpio < 0 to disable GPIO hotplug would break backwards compatibility.
81  */
82 #define TMIO_MMC_USE_GPIO_CD		(1 << 5)
83 
84 /*
85  * Some controllers doesn't have over 0x100 register.
86  * it is used to checking accessibility of
87  * CTL_SD_CARD_CLK_CTL / CTL_CLK_AND_WAIT_CTL
88  */
89 #define TMIO_MMC_HAVE_HIGH_REG		(1 << 6)
90 
91 /*
92  * Some controllers have CMD12 automatically
93  * issue/non-issue register
94  */
95 #define TMIO_MMC_HAVE_CMD12_CTRL	(1 << 7)
96 
97 /*
98  * Some controllers needs to set 1 on SDIO status reserved bits
99  */
100 #define TMIO_MMC_SDIO_STATUS_QUIRK	(1 << 8)
101 
102 /*
103  * Some controllers allows to set SDx actual clock
104  */
105 #define TMIO_MMC_CLK_ACTUAL		(1 << 10)
106 
107 int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
108 int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
109 void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);
110 void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state);
111 
112 struct dma_chan;
113 
114 /*
115  * data for the MMC controller
116  */
117 struct tmio_mmc_data {
118 	void				*chan_priv_tx;
119 	void				*chan_priv_rx;
120 	unsigned int			hclk;
121 	unsigned long			capabilities;
122 	unsigned long			capabilities2;
123 	unsigned long			flags;
124 	u32				ocr_mask;	/* available voltages */
125 	unsigned int			cd_gpio;
126 	int				alignment_shift;
127 	dma_addr_t			dma_rx_offset;
128 	void (*set_pwr)(struct platform_device *host, int state);
129 	void (*set_clk_div)(struct platform_device *host, int state);
130 };
131 
132 /*
133  * data for the NAND controller
134  */
135 struct tmio_nand_data {
136 	struct nand_bbt_descr	*badblock_pattern;
137 	struct mtd_partition	*partition;
138 	unsigned int		num_partitions;
139 };
140 
141 #define FBIO_TMIO_ACC_WRITE	0x7C639300
142 #define FBIO_TMIO_ACC_SYNC	0x7C639301
143 
144 struct tmio_fb_data {
145 	int			(*lcd_set_power)(struct platform_device *fb_dev,
146 								bool on);
147 	int			(*lcd_mode)(struct platform_device *fb_dev,
148 					const struct fb_videomode *mode);
149 	int			num_modes;
150 	struct fb_videomode	*modes;
151 
152 	/* in mm: size of screen */
153 	int			height;
154 	int			width;
155 };
156 
157 
158 #endif
159