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Commit | Line | Data |
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9d407995 WD |
1 | #include <common.h> |
2 | #include <mpc8xx.h> | |
3 | #include <pcmcia.h> | |
4 | #include <i2c.h> | |
5 | ||
6 | #undef CONFIG_PCMCIA | |
7 | ||
c508a4ce | 8 | #if defined(CONFIG_CMD_PCMCIA) |
9d407995 WD |
9 | #define CONFIG_PCMCIA |
10 | #endif | |
11 | ||
c508a4ce | 12 | #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD) |
9d407995 WD |
13 | #define CONFIG_PCMCIA |
14 | #endif | |
15 | ||
16 | #ifdef CONFIG_PCMCIA | |
17 | ||
18 | #define PCMCIA_BOARD_MSG "LWMON" | |
19 | ||
20 | /* #define's for MAX1604 Power Switch */ | |
21 | #define MAX1604_OP_SUS 0x80 | |
22 | #define MAX1604_VCCBON 0x40 | |
23 | #define MAX1604_VCC_35 0x20 | |
24 | #define MAX1604_VCCBHIZ 0x10 | |
25 | #define MAX1604_VPPBON 0x08 | |
26 | #define MAX1604_VPPBPBPGM 0x04 | |
27 | #define MAX1604_VPPBHIZ 0x02 | |
28 | /* reserved 0x01 */ | |
29 | ||
30 | int pcmcia_hardware_enable(int slot) | |
31 | { | |
32 | volatile immap_t *immap; | |
33 | volatile cpm8xx_t *cp; | |
34 | volatile pcmconf8xx_t *pcmp; | |
35 | volatile sysconf8xx_t *sysp; | |
36 | uint reg, mask; | |
37 | uchar val; | |
38 | ||
39 | ||
40 | debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); | |
41 | ||
42 | /* Switch on PCMCIA port in PIC register 0x60 */ | |
43 | reg = pic_read (0x60); | |
44 | debug ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg); | |
45 | reg &= ~0x10; | |
46 | /* reg |= 0x08; Vpp not needed */ | |
47 | pic_write (0x60, reg); | |
48 | #ifdef DEBUG | |
49 | reg = pic_read (0x60); | |
50 | printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg); | |
51 | #endif | |
52 | udelay(10000); | |
53 | ||
54 | immap = (immap_t *)CFG_IMMR; | |
55 | sysp = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf)); | |
56 | pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia)); | |
57 | cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm)); | |
58 | ||
59 | /* | |
60 | * Configure SIUMCR to enable PCMCIA port B | |
61 | * (VFLS[0:1] are not used for debugging, we connect FRZ# instead) | |
62 | */ | |
63 | sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */ | |
64 | ||
65 | /* clear interrupt state, and disable interrupts */ | |
66 | pcmp->pcmc_pscr = PCMCIA_MASK(_slot_); | |
67 | pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_); | |
68 | ||
69 | /* | |
70 | * Disable interrupts, DMA, and PCMCIA buffers | |
71 | * (isolate the interface) and assert RESET signal | |
72 | */ | |
73 | debug ("Disable PCMCIA buffers and assert RESET\n"); | |
74 | reg = 0; | |
75 | reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ | |
76 | reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */ | |
77 | PCMCIA_PGCRX(_slot_) = reg; | |
78 | udelay(500); | |
79 | ||
80 | /* | |
81 | * Make sure there is a card in the slot, then configure the interface. | |
82 | */ | |
83 | udelay(10000); | |
84 | debug ("[%d] %s: PIPR(%p)=0x%x\n", | |
85 | __LINE__,__FUNCTION__, | |
86 | &(pcmp->pcmc_pipr),pcmp->pcmc_pipr); | |
87 | if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) { | |
88 | printf (" No Card found\n"); | |
89 | return (1); | |
90 | } | |
91 | ||
92 | /* | |
93 | * Power On. | |
94 | */ | |
95 | mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot); | |
96 | reg = pcmp->pcmc_pipr; | |
97 | debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n", | |
98 | reg, | |
99 | (reg&PCMCIA_VS1(slot))?"n":"ff", | |
100 | (reg&PCMCIA_VS2(slot))?"n":"ff"); | |
101 | if ((reg & mask) == mask) { | |
102 | val = 0; /* VCCB3/5 = 0 ==> use Vx = 5.0 V */ | |
103 | puts (" 5.0V card found: "); | |
104 | } else { | |
105 | val = MAX1604_VCC_35; /* VCCB3/5 = 1 ==> use Vy = 3.3 V */ | |
106 | puts (" 3.3V card found: "); | |
107 | } | |
108 | ||
109 | /* switch VCC on */ | |
110 | val |= MAX1604_OP_SUS | MAX1604_VCCBON; | |
111 | i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); | |
112 | i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1); | |
113 | ||
114 | udelay(500000); | |
115 | ||
116 | debug ("Enable PCMCIA buffers and stop RESET\n"); | |
117 | reg = PCMCIA_PGCRX(_slot_); | |
118 | reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */ | |
119 | reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */ | |
120 | PCMCIA_PGCRX(_slot_) = reg; | |
121 | ||
122 | udelay(250000); /* some cards need >150 ms to come up :-( */ | |
123 | ||
124 | debug ("# hardware_enable done\n"); | |
125 | ||
126 | return (0); | |
127 | } | |
128 | ||
129 | ||
c508a4ce | 130 | #if defined(CONFIG_CMD_PCMCIA) |
9d407995 WD |
131 | int pcmcia_hardware_disable(int slot) |
132 | { | |
133 | volatile immap_t *immap; | |
134 | volatile pcmconf8xx_t *pcmp; | |
135 | u_long reg; | |
136 | uchar val; | |
137 | ||
138 | debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); | |
139 | ||
140 | immap = (immap_t *)CFG_IMMR; | |
141 | pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia)); | |
142 | ||
143 | /* remove all power, put output in high impedance state */ | |
144 | val = MAX1604_VCCBHIZ | MAX1604_VPPBHIZ; | |
145 | i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); | |
146 | i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1); | |
147 | ||
148 | /* Configure PCMCIA General Control Register */ | |
149 | debug ("Disable PCMCIA buffers and assert RESET\n"); | |
150 | reg = 0; | |
151 | reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ | |
152 | reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */ | |
153 | PCMCIA_PGCRX(_slot_) = reg; | |
154 | ||
155 | /* Switch off PCMCIA port in PIC register 0x60 */ | |
156 | reg = pic_read (0x60); | |
157 | debug ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg); | |
158 | reg |= 0x10; | |
159 | reg &= ~0x08; | |
160 | pic_write (0x60, reg); | |
161 | #ifdef DEBUG | |
162 | reg = pic_read (0x60); | |
163 | printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg); | |
164 | #endif | |
165 | udelay(10000); | |
166 | ||
167 | return (0); | |
168 | } | |
d39b5741 | 169 | #endif |
9d407995 WD |
170 | |
171 | ||
172 | int pcmcia_voltage_set(int slot, int vcc, int vpp) | |
173 | { | |
174 | volatile immap_t *immap; | |
175 | volatile pcmconf8xx_t *pcmp; | |
176 | u_long reg; | |
177 | uchar val; | |
178 | ||
179 | debug ("voltage_set: " | |
180 | PCMCIA_BOARD_MSG | |
181 | " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n", | |
182 | 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10); | |
183 | ||
184 | immap = (immap_t *)CFG_IMMR; | |
185 | pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia)); | |
186 | /* | |
187 | * Disable PCMCIA buffers (isolate the interface) | |
188 | * and assert RESET signal | |
189 | */ | |
190 | debug ("Disable PCMCIA buffers and assert RESET\n"); | |
191 | reg = PCMCIA_PGCRX(_slot_); | |
192 | reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ | |
193 | reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */ | |
194 | PCMCIA_PGCRX(_slot_) = reg; | |
195 | udelay(500); | |
196 | ||
197 | /* | |
198 | * Turn off all power (switch to high impedance) | |
199 | */ | |
200 | debug ("PCMCIA power OFF\n"); | |
201 | val = MAX1604_VCCBHIZ | MAX1604_VPPBHIZ; | |
202 | i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); | |
203 | i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1); | |
204 | ||
205 | val = 0; | |
206 | switch(vcc) { | |
53677ef1 | 207 | case 0: break; |
9d407995 | 208 | case 33: val = MAX1604_VCC_35; break; |
53677ef1 WD |
209 | case 50: break; |
210 | default: goto done; | |
9d407995 WD |
211 | } |
212 | ||
213 | /* Checking supported voltages */ | |
214 | ||
215 | debug ("PIPR: 0x%x --> %s\n", | |
216 | pcmp->pcmc_pipr, | |
217 | (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V"); | |
218 | ||
219 | i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1); | |
220 | if (val) { | |
221 | debug ("PCMCIA powered at %sV\n", | |
222 | (val & MAX1604_VCC_35) ? "3.3" : "5.0"); | |
223 | } else { | |
224 | debug ("PCMCIA powered down\n"); | |
225 | } | |
226 | ||
227 | done: | |
228 | debug ("Enable PCMCIA buffers and stop RESET\n"); | |
229 | reg = PCMCIA_PGCRX(_slot_); | |
230 | reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */ | |
231 | reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */ | |
232 | PCMCIA_PGCRX(_slot_) = reg; | |
233 | udelay(500); | |
234 | ||
235 | debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", | |
236 | slot+'A'); | |
237 | return (0); | |
238 | } | |
239 | ||
240 | #endif /* CONFIG_PCMCIA */ |