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git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/pcmcia/tqm8xx_pcmcia.c
1 /* -------------------------------------------------------------------- */
2 /* TQM8xxL Boards by TQ Components */
3 /* SC8xx Boards by SinoVee Microsystems */
4 /* -------------------------------------------------------------------- */
14 #if defined(CONFIG_CMD_PCMCIA)
18 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
22 #if defined(CONFIG_PCMCIA) \
23 && defined(CONFIG_TQM8xxL)
25 #if defined(CONFIG_VIRTLAB2)
26 #define PCMCIA_BOARD_MSG "Virtlab2"
27 #elif defined(CONFIG_TQM8xxL)
28 #define PCMCIA_BOARD_MSG "TQM8xxL"
31 #if defined(CONFIG_NSCU)
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
) {}
38 #elif defined(CONFIG_VIRTLAB2)
40 static inline void power_config(int slot
) {}
42 static inline void power_off(int slot
)
44 volatile unsigned __iomem
*addr
;
45 addr
= (volatile unsigned __iomem
*)PCMCIA_CTRL
;
50 static inline void power_on_5_0(int slot
)
52 volatile unsigned __iomem
*addr
;
53 addr
= (volatile unsigned __iomem
*)PCMCIA_CTRL
;
55 /* Enable 5V Vccout */
59 static inline void power_on_3_3(int slot
)
61 volatile unsigned __iomem
*addr
;
62 addr
= (volatile unsigned __iomem
*)PCMCIA_CTRL
;
64 /* Enable 3.3V Vccout */
70 static inline void power_config(int slot
)
72 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
74 * Configure Port C pins for
75 * 5 Volts Enable and 3 Volts enable
77 clrbits_be16(&immap
->im_ioport
.iop_pcpar
, 0x0002 | 0x0004);
78 clrbits_be16(&immap
->im_ioport
.iop_pcso
, 0x0002 | 0x0004);
81 static inline void power_off(int slot
)
83 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
84 clrbits_be16(&immap
->im_ioport
.iop_pcdat
, 0x0002 | 0x0004);
87 static inline void power_on_5_0(int slot
)
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);
94 static inline void power_on_3_3(int slot
)
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);
104 * Function to retrieve the PIPR register, used for debuging purposes.
106 static inline uint32_t debug_get_pipr(void)
110 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
111 pipr
= in_be32(&immap
->im_pcmcia
.pcmc_pipr
);
117 static inline int check_card_is_absent(int slot
)
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));
125 #define NSCU_GCRX_CXOE 0
127 #define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE
130 int pcmcia_hardware_enable(int slot
)
132 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
135 debug("hardware_enable: " PCMCIA_BOARD_MSG
" Slot %c\n", 'A'+slot
);
140 * Configure SIUMCR to enable PCMCIA port B
141 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
145 clrbits_be32(&immap
->im_siu_conf
.sc_siumcr
, SIUMCR_DBGC11
);
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
));
152 * Disable interrupts, DMA, and PCMCIA buffers
153 * (isolate the interface) and assert RESET signal
155 debug("Disable PCMCIA buffers and assert RESET\n");
157 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
158 reg
|= NSCU_GCRX_CXOE
;
160 PCMCIA_PGCRX(slot
) = reg
;
167 * Make sure there is a card in the slot, then configure the interface.
170 reg
= debug_get_pipr();
171 debug("[%d] %s: PIPR(%p)=0x%x\n", __LINE__
, __FUNCTION__
,
172 &immap
->im_pcmcia
.pcmc_pipr
, reg
);
174 if (check_card_is_absent(slot
)) {
175 printf (" No Card found\n");
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",
186 (reg
& PCMCIA_VS1(slot
)) ? "n" : "ff",
187 (reg
& PCMCIA_VS2(slot
)) ? "n" : "ff");
189 if ((reg
& mask
) == mask
) {
191 puts (" 5.0V card found: ");
194 puts (" 3.3V card found: ");
198 /* VCC switch error flag, PCMCIA slot INPACK_ pin */
199 cp
->cp_pbdir
&= ~(0x0020 | 0x0010);
200 cp
->cp_pbpar
&= ~(0x0020 | 0x0010);
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
;
211 PCMCIA_PGCRX(slot
) = reg
;
213 udelay(250000); /* some cards need >150 ms to come up :-( */
215 debug("# hardware_enable done\n");
221 #if defined(CONFIG_CMD_PCMCIA)
222 int pcmcia_hardware_disable(int slot
)
226 debug("hardware_disable: " PCMCIA_BOARD_MSG
" Slot %c\n", 'A'+slot
);
228 /* remove all power */
231 debug("Disable PCMCIA buffers and assert RESET\n");
233 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
234 reg
|= NSCU_GCRX_CXOE
; /* active low */
236 PCMCIA_PGCRX(slot
) = reg
;
244 int pcmcia_voltage_set(int slot
, int vcc
, int vpp
)
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);
255 * Disable PCMCIA buffers (isolate the interface)
256 * and assert RESET signal
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 */
264 PCMCIA_PGCRX(slot
) = reg
;
267 debug("PCMCIA power OFF\n");
273 case 33: power_on_3_3(slot
); break;
274 case 50: power_on_5_0(slot
); break;
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");
284 debug("PCMCIA powered at %sV\n", (vcc
== 50) ? "5.0" : "3.3");
286 debug("PCMCIA powered down\n");
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 */
295 PCMCIA_PGCRX(slot
) = reg
;
298 debug("voltage_set: " PCMCIA_BOARD_MSG
" Slot %c, DONE\n", slot
+'A');
299 #endif /* CONFIG_NSCU */
303 #endif /* CONFIG_PCMCIA && CONFIG_TQM8xxL */