blob: 7d34ac80ae6134472fa497c0efb63052c19c5ae0 [file] [log] [blame]
Wolfgang Denk9d407992006-07-10 23:07:28 +02001#include <common.h>
2#include <mpc8xx.h>
3#include <pcmcia.h>
4
5#undef CONFIG_PCMCIA
6
7#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
8#define CONFIG_PCMCIA
9#endif
10
11#if (CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
12#define CONFIG_PCMCIA
13#endif
14
15#ifdef CONFIG_PCMCIA
16
17#define PCMCIA_BOARD_MSG "R360MPI"
18
19int pcmcia_hardware_enable(int slot)
20{
21 volatile immap_t *immap;
22 volatile cpm8xx_t *cp;
23 volatile pcmconf8xx_t *pcmp;
24 volatile sysconf8xx_t *sysp;
25 uint reg, mask;
26
27 debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
28
29 udelay(10000);
30
31 immap = (immap_t *)CFG_IMMR;
32 sysp = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
33 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
34 cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
35
36 /*
37 * Configure SIUMCR to enable PCMCIA port B
38 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
39 */
40 sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
41
42 /* clear interrupt state, and disable interrupts */
43 pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
44 pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
45
46 /*
47 * Disable interrupts, DMA, and PCMCIA buffers
48 * (isolate the interface) and assert RESET signal
49 */
50 debug ("Disable PCMCIA buffers and assert RESET\n");
51 reg = 0;
52 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
53 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
54 PCMCIA_PGCRX(_slot_) = reg;
55 udelay(500);
56
57 /*
58 * Configure Ports A, B & C pins for
59 * 5 Volts Enable and 3 Volts enable
60 */
61 immap->im_ioport.iop_pcpar &= ~(0x0400);
62 immap->im_ioport.iop_pcso &= ~(0x0400);/*
63 immap->im_ioport.iop_pcdir |= 0x0400;*/
64
65 immap->im_ioport.iop_papar &= ~(0x0200);/*
66 immap->im_ioport.iop_padir |= 0x0200;*/
67#if 0
68 immap->im_ioport.iop_pbpar &= ~(0xC000);
69 immap->im_ioport.iop_pbdir &= ~(0xC000);
70#endif
71 /* remove all power */
72
73 immap->im_ioport.iop_pcdat |= 0x0400;
74 immap->im_ioport.iop_padat |= 0x0200;
75
76 /*
77 * Make sure there is a card in the slot, then configure the interface.
78 */
79 udelay(10000);
80 debug ("[%d] %s: PIPR(%p)=0x%x\n",
81 __LINE__,__FUNCTION__,
82 &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
83 if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
84 printf (" No Card found\n");
85 return (1);
86 }
87
88 /*
89 * Power On.
90 */
91 mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
92 reg = pcmp->pcmc_pipr;
93 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
94 reg,
95 (reg&PCMCIA_VS1(slot))?"n":"ff",
96 (reg&PCMCIA_VS2(slot))?"n":"ff");
97 if ((reg & mask) == mask) {
98 immap->im_ioport.iop_pcdat &= ~(0x4000);
99 puts (" 5.0V card found: ");
100 } else {
101 immap->im_ioport.iop_padat &= ~(0x0002);
102 puts (" 3.3V card found: ");
103 }
104 immap->im_ioport.iop_pcdir |= 0x0400;
105 immap->im_ioport.iop_padir |= 0x0200;
106#if 0
107 /* VCC switch error flag, PCMCIA slot INPACK_ pin */
108 cp->cp_pbdir &= ~(0x0020 | 0x0010);
109 cp->cp_pbpar &= ~(0x0020 | 0x0010);
110 udelay(500000);
111#endif
112 debug ("Enable PCMCIA buffers and stop RESET\n");
113 reg = PCMCIA_PGCRX(_slot_);
114 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
115 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
116 PCMCIA_PGCRX(_slot_) = reg;
117
118 udelay(250000); /* some cards need >150 ms to come up :-( */
119
120 debug ("# hardware_enable done\n");
121
122 return (0);
123}
124
125
126#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
127int pcmcia_hardware_disable(int slot)
128{
129 volatile immap_t *immap;
130 volatile pcmconf8xx_t *pcmp;
131 u_long reg;
132
133 debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
134
135 immap = (immap_t *)CFG_IMMR;
136 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
137
138 /* remove all power */
139 immap->im_ioport.iop_pcdat |= 0x0400;
140 immap->im_ioport.iop_padat |= 0x0200;
141
142 /* Configure PCMCIA General Control Register */
143 debug ("Disable PCMCIA buffers and assert RESET\n");
144 reg = 0;
145 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
146 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
147 PCMCIA_PGCRX(_slot_) = reg;
148
149 udelay(10000);
150
151 return (0);
152}
153#endif /* CFG_CMD_PCMCIA */
154
155
156int pcmcia_voltage_set(int slot, int vcc, int vpp)
157{
158 volatile immap_t *immap;
159 volatile pcmconf8xx_t *pcmp;
160 u_long reg;
161
162 debug ("voltage_set: "
163 PCMCIA_BOARD_MSG
164 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
165 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
166
167 immap = (immap_t *)CFG_IMMR;
168 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
169 /*
170 * Disable PCMCIA buffers (isolate the interface)
171 * and assert RESET signal
172 */
173 debug ("Disable PCMCIA buffers and assert RESET\n");
174 reg = PCMCIA_PGCRX(_slot_);
175 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
176 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
177 PCMCIA_PGCRX(_slot_) = reg;
178 udelay(500);
179
180 /*
181 * Configure Ports A & C pins for
182 * 5 Volts Enable and 3 Volts enable,
183 * Turn off all power
184 */
185 debug ("PCMCIA power OFF\n");
186 immap->im_ioport.iop_pcpar &= ~(0x0400);
187 immap->im_ioport.iop_pcso &= ~(0x0400);/*
188 immap->im_ioport.iop_pcdir |= 0x0400;*/
189
190 immap->im_ioport.iop_papar &= ~(0x0200);/*
191 immap->im_ioport.iop_padir |= 0x0200;*/
192
193 immap->im_ioport.iop_pcdat |= 0x0400;
194 immap->im_ioport.iop_padat |= 0x0200;
195
196 reg = 0;
197 switch(vcc) {
198 case 0: break;
199 case 33: reg |= 0x0200; break;
200 case 50: reg |= 0x0400; break;
201 default: goto done;
202 }
203
204 /* Checking supported voltages */
205
206 debug ("PIPR: 0x%x --> %s\n",
207 pcmp->pcmc_pipr,
208 (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
209
210 if (reg & 0x0200)
211 immap->im_ioport.iop_pcdat &= !reg;
212 if (reg & 0x0400)
213 immap->im_ioport.iop_padat &= !reg;
214 immap->im_ioport.iop_pcdir |= 0x0200;
215 immap->im_ioport.iop_padir |= 0x0400;
216 if (reg) {
217 debug ("PCMCIA powered at %sV\n",
218 (reg&0x0400) ? "5.0" : "3.3");
219 } else {
220 debug ("PCMCIA powered down\n");
221 }
222
223done:
224 debug ("Enable PCMCIA buffers and stop RESET\n");
225 reg = PCMCIA_PGCRX(_slot_);
226 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
227 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
228 PCMCIA_PGCRX(_slot_) = reg;
229 udelay(500);
230
231 debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
232 slot+'A');
233 return (0);
234}
235
236#endif /* CCONFIG_PCMCIA */