1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef MFD_TMIO_H
3 #define MFD_TMIO_H
4 
5 #include <linux/device.h>
6 #include <linux/fb.h>
7 #include <linux/io.h>
8 #include <linux/jiffies.h>
9 #include <linux/mmc/card.h>
10 #include <linux/platform_device.h>
11 #include <linux/pm_runtime.h>
12 
13 #define tmio_ioread8(addr) readb(addr)
14 #define tmio_ioread16(addr) readw(addr)
15 #define tmio_ioread16_rep(r, b, l) readsw(r, b, l)
16 #define tmio_ioread32(addr) \
17 	(((u32)readw((addr))) | (((u32)readw((addr) + 2)) << 16))
18 
19 #define tmio_iowrite8(val, addr) writeb((val), (addr))
20 #define tmio_iowrite16(val, addr) writew((val), (addr))
21 #define tmio_iowrite16_rep(r, b, l) writesw(r, b, l)
22 #define tmio_iowrite32(val, addr) \
23 	do { \
24 		writew((val),       (addr)); \
25 		writew((val) >> 16, (addr) + 2); \
26 	} while (0)
27 
28 #define sd_config_write8(base, shift, reg, val) \
29 	tmio_iowrite8((val), (base) + ((reg) << (shift)))
30 #define sd_config_write16(base, shift, reg, val) \
31 	tmio_iowrite16((val), (base) + ((reg) << (shift)))
32 #define sd_config_write32(base, shift, reg, val) \
33 	do { \
34 		tmio_iowrite16((val), (base) + ((reg) << (shift)));   \
35 		tmio_iowrite16((val) >> 16, (base) + ((reg + 2) << (shift))); \
36 	} while (0)
37 
38 /* tmio MMC platform flags */
39 /*
40  * Some controllers can support a 2-byte block size when the bus width
41  * is configured in 4-bit mode.
42  */
43 #define TMIO_MMC_BLKSZ_2BYTES		BIT(1)
44 /*
45  * Some controllers can support SDIO IRQ signalling.
46  */
47 #define TMIO_MMC_SDIO_IRQ		BIT(2)
48 
49 /* Some features are only available or tested on R-Car Gen2 or later */
50 #define TMIO_MMC_MIN_RCAR2		BIT(3)
51 
52 /*
53  * Some controllers require waiting for the SD bus to become
54  * idle before writing to some registers.
55  */
56 #define TMIO_MMC_HAS_IDLE_WAIT		BIT(4)
57 
58 /*
59  * Use the busy timeout feature. Probably all TMIO versions support it. Yet,
60  * we don't have documentation for old variants, so we enable only known good
61  * variants with this flag. Can be removed once all variants are known good.
62  */
63 #define TMIO_MMC_USE_BUSY_TIMEOUT	BIT(5)
64 
65 /*
66  * Some controllers have CMD12 automatically
67  * issue/non-issue register
68  */
69 #define TMIO_MMC_HAVE_CMD12_CTRL	BIT(7)
70 
71 /* Controller has some SDIO status bits which must be 1 */
72 #define TMIO_MMC_SDIO_STATUS_SETBITS	BIT(8)
73 
74 /*
75  * Some controllers have a 32-bit wide data port register
76  */
77 #define TMIO_MMC_32BIT_DATA_PORT	BIT(9)
78 
79 /*
80  * Some controllers allows to set SDx actual clock
81  */
82 #define TMIO_MMC_CLK_ACTUAL		BIT(10)
83 
84 /* Some controllers have a CBSY bit */
85 #define TMIO_MMC_HAVE_CBSY		BIT(11)
86 
87 int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
88 int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
89 void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);
90 void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state);
91 
92 struct dma_chan;
93 
94 /*
95  * data for the MMC controller
96  */
97 struct tmio_mmc_data {
98 	void				*chan_priv_tx;
99 	void				*chan_priv_rx;
100 	unsigned int			hclk;
101 	unsigned long			capabilities;
102 	unsigned long			capabilities2;
103 	unsigned long			flags;
104 	u32				ocr_mask;	/* available voltages */
105 	int				alignment_shift;
106 	dma_addr_t			dma_rx_offset;
107 	unsigned int			max_blk_count;
108 	unsigned short			max_segs;
109 	void (*set_pwr)(struct platform_device *host, int state);
110 	void (*set_clk_div)(struct platform_device *host, int state);
111 };
112 
113 /*
114  * data for the NAND controller
115  */
116 struct tmio_nand_data {
117 	struct nand_bbt_descr	*badblock_pattern;
118 	struct mtd_partition	*partition;
119 	unsigned int		num_partitions;
120 	const char *const	*part_parsers;
121 };
122 
123 #define FBIO_TMIO_ACC_WRITE	0x7C639300
124 #define FBIO_TMIO_ACC_SYNC	0x7C639301
125 
126 struct tmio_fb_data {
127 	int			(*lcd_set_power)(struct platform_device *fb_dev,
128 						 bool on);
129 	int			(*lcd_mode)(struct platform_device *fb_dev,
130 					    const struct fb_videomode *mode);
131 	int			num_modes;
132 	struct fb_videomode	*modes;
133 
134 	/* in mm: size of screen */
135 	int			height;
136 	int			width;
137 };
138 
139 #endif
140