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powerpc: mpc8xx: remove svm_sc8xx board
[people/ms/u-boot.git] / drivers / pcmcia / tqm8xx_pcmcia.c
1 /* -------------------------------------------------------------------- */
2 /* TQM8xxL Boards by TQ Components */
3 /* SC8xx Boards by SinoVee Microsystems */
4 /* -------------------------------------------------------------------- */
5 #include <common.h>
6 #include <asm/io.h>
7 #ifdef CONFIG_8xx
8 #include <mpc8xx.h>
9 #endif
10 #include <pcmcia.h>
11
12 #undef CONFIG_PCMCIA
13
14 #if defined(CONFIG_CMD_PCMCIA)
15 #define CONFIG_PCMCIA
16 #endif
17
18 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
19 #define CONFIG_PCMCIA
20 #endif
21
22 #if defined(CONFIG_PCMCIA) \
23 && defined(CONFIG_TQM8xxL)
24
25 #if defined(CONFIG_VIRTLAB2)
26 #define PCMCIA_BOARD_MSG "Virtlab2"
27 #elif defined(CONFIG_TQM8xxL)
28 #define PCMCIA_BOARD_MSG "TQM8xxL"
29 #endif
30
31 #if defined(CONFIG_NSCU)
32
33 static inline void power_config(int slot) {}
34 static inline void power_off(int slot) {}
35 static inline void power_on_5_0(int slot) {}
36 static inline void power_on_3_3(int slot) {}
37
38 #elif defined(CONFIG_VIRTLAB2)
39
40 static inline void power_config(int slot) {}
41
42 static inline void power_off(int slot)
43 {
44 volatile unsigned __iomem *addr;
45 addr = (volatile unsigned __iomem *)PCMCIA_CTRL;
46
47 out_be32(addr, 0);
48 }
49
50 static inline void power_on_5_0(int slot)
51 {
52 volatile unsigned __iomem *addr;
53 addr = (volatile unsigned __iomem *)PCMCIA_CTRL;
54
55 /* Enable 5V Vccout */
56 out_be32(addr, 2);
57 }
58
59 static inline void power_on_3_3(int slot)
60 {
61 volatile unsigned __iomem *addr;
62 addr = (volatile unsigned __iomem *)PCMCIA_CTRL;
63
64 /* Enable 3.3V Vccout */
65 out_be32(addr, 1);
66 }
67
68 #else
69
70 static inline void power_config(int slot)
71 {
72 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
73 /*
74 * Configure Port C pins for
75 * 5 Volts Enable and 3 Volts enable
76 */
77 clrbits_be16(&immap->im_ioport.iop_pcpar, 0x0002 | 0x0004);
78 clrbits_be16(&immap->im_ioport.iop_pcso, 0x0002 | 0x0004);
79 }
80
81 static inline void power_off(int slot)
82 {
83 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
84 clrbits_be16(&immap->im_ioport.iop_pcdat, 0x0002 | 0x0004);
85 }
86
87 static inline void power_on_5_0(int slot)
88 {
89 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
90 setbits_be16(&immap->im_ioport.iop_pcdat, 0x0004);
91 setbits_be16(&immap->im_ioport.iop_pcdir, 0x0002 | 0x0004);
92 }
93
94 static inline void power_on_3_3(int slot)
95 {
96 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
97 setbits_be16(&immap->im_ioport.iop_pcdat, 0x0002);
98 setbits_be16(&immap->im_ioport.iop_pcdir, 0x0002 | 0x0004);
99 }
100
101 #endif
102
103 /*
104 * Function to retrieve the PIPR register, used for debuging purposes.
105 */
106 static inline uint32_t debug_get_pipr(void)
107 {
108 uint32_t pipr = 0;
109 #ifdef DEBUG
110 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
111 pipr = in_be32(&immap->im_pcmcia.pcmc_pipr);
112 #endif
113 return pipr;
114 }
115
116
117 static inline int check_card_is_absent(int slot)
118 {
119 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
120 uint32_t pipr = in_be32(&immap->im_pcmcia.pcmc_pipr);
121 return pipr & (0x18000000 >> (slot << 4));
122 }
123
124 #ifdef NSCU_OE_INV
125 #define NSCU_GCRX_CXOE 0
126 #else
127 #define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE
128 #endif
129
130 int pcmcia_hardware_enable(int slot)
131 {
132 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
133 uint reg, mask;
134
135 debug("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
136
137 udelay(10000);
138
139 /*
140 * Configure SIUMCR to enable PCMCIA port B
141 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
142 */
143
144 /* Set DBGC to 00 */
145 clrbits_be32(&immap->im_siu_conf.sc_siumcr, SIUMCR_DBGC11);
146
147 /* Clear interrupt state, and disable interrupts */
148 out_be32(&immap->im_pcmcia.pcmc_pscr, PCMCIA_MASK(slot));
149 clrbits_be32(&immap->im_pcmcia.pcmc_per, PCMCIA_MASK(slot));
150
151 /*
152 * Disable interrupts, DMA, and PCMCIA buffers
153 * (isolate the interface) and assert RESET signal
154 */
155 debug("Disable PCMCIA buffers and assert RESET\n");
156 reg = 0;
157 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
158 reg |= NSCU_GCRX_CXOE;
159
160 PCMCIA_PGCRX(slot) = reg;
161 udelay(500);
162
163 power_config(slot);
164 power_off(slot);
165
166 /*
167 * Make sure there is a card in the slot, then configure the interface.
168 */
169 udelay(10000);
170 reg = debug_get_pipr();
171 debug("[%d] %s: PIPR(%p)=0x%x\n", __LINE__, __FUNCTION__,
172 &immap->im_pcmcia.pcmc_pipr, reg);
173
174 if (check_card_is_absent(slot)) {
175 printf (" No Card found\n");
176 return (1);
177 }
178
179 /*
180 * Power On.
181 */
182 mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
183 reg = in_be32(&immap->im_pcmcia.pcmc_pipr);
184 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
185 reg,
186 (reg & PCMCIA_VS1(slot)) ? "n" : "ff",
187 (reg & PCMCIA_VS2(slot)) ? "n" : "ff");
188
189 if ((reg & mask) == mask) {
190 power_on_5_0(slot);
191 puts (" 5.0V card found: ");
192 } else {
193 power_on_3_3(slot);
194 puts (" 3.3V card found: ");
195 }
196
197 #if 0
198 /* VCC switch error flag, PCMCIA slot INPACK_ pin */
199 cp->cp_pbdir &= ~(0x0020 | 0x0010);
200 cp->cp_pbpar &= ~(0x0020 | 0x0010);
201 udelay(500000);
202 #endif
203
204 udelay(1000);
205 debug("Enable PCMCIA buffers and stop RESET\n");
206 reg = PCMCIA_PGCRX(slot);
207 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
208 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
209 reg &= ~NSCU_GCRX_CXOE;
210
211 PCMCIA_PGCRX(slot) = reg;
212
213 udelay(250000); /* some cards need >150 ms to come up :-( */
214
215 debug("# hardware_enable done\n");
216
217 return (0);
218 }
219
220
221 #if defined(CONFIG_CMD_PCMCIA)
222 int pcmcia_hardware_disable(int slot)
223 {
224 u_long reg;
225
226 debug("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
227
228 /* remove all power */
229 power_off(slot);
230
231 debug("Disable PCMCIA buffers and assert RESET\n");
232 reg = 0;
233 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
234 reg |= NSCU_GCRX_CXOE; /* active low */
235
236 PCMCIA_PGCRX(slot) = reg;
237
238 udelay(10000);
239
240 return (0);
241 }
242 #endif
243
244 int pcmcia_voltage_set(int slot, int vcc, int vpp)
245 {
246 #ifndef CONFIG_NSCU
247 u_long reg;
248 uint32_t pipr = 0;
249
250 debug("voltage_set: " PCMCIA_BOARD_MSG
251 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
252 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
253
254 /*
255 * Disable PCMCIA buffers (isolate the interface)
256 * and assert RESET signal
257 */
258 debug("Disable PCMCIA buffers and assert RESET\n");
259 reg = PCMCIA_PGCRX(slot);
260 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
261 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
262 reg |= NSCU_GCRX_CXOE; /* active low */
263
264 PCMCIA_PGCRX(slot) = reg;
265 udelay(500);
266
267 debug("PCMCIA power OFF\n");
268 power_config(slot);
269 power_off(slot);
270
271 switch(vcc) {
272 case 0: break;
273 case 33: power_on_3_3(slot); break;
274 case 50: power_on_5_0(slot); break;
275 default: goto done;
276 }
277
278 /* Checking supported voltages */
279 pipr = debug_get_pipr();
280 debug("PIPR: 0x%x --> %s\n", pipr,
281 (pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
282
283 if (vcc)
284 debug("PCMCIA powered at %sV\n", (vcc == 50) ? "5.0" : "3.3");
285 else
286 debug("PCMCIA powered down\n");
287
288 done:
289 debug("Enable PCMCIA buffers and stop RESET\n");
290 reg = PCMCIA_PGCRX(slot);
291 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
292 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
293 reg &= ~NSCU_GCRX_CXOE; /* active low */
294
295 PCMCIA_PGCRX(slot) = reg;
296 udelay(500);
297
298 debug("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", slot+'A');
299 #endif /* CONFIG_NSCU */
300 return 0;
301 }
302
303 #endif /* CONFIG_PCMCIA && CONFIG_TQM8xxL */