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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_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
22 #if defined(CONFIG_PCMCIA) \
23 && defined(CONFIG_TQM8xxL)
25 #if defined(CONFIG_TQM8xxL)
26 #define PCMCIA_BOARD_MSG "TQM8xxL"
29 static inline void power_config(int slot
)
31 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
33 * Configure Port C pins for
34 * 5 Volts Enable and 3 Volts enable
36 clrbits_be16(&immap
->im_ioport
.iop_pcpar
, 0x0002 | 0x0004);
37 clrbits_be16(&immap
->im_ioport
.iop_pcso
, 0x0002 | 0x0004);
40 static inline void power_off(int slot
)
42 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
43 clrbits_be16(&immap
->im_ioport
.iop_pcdat
, 0x0002 | 0x0004);
46 static inline void power_on_5_0(int slot
)
48 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
49 setbits_be16(&immap
->im_ioport
.iop_pcdat
, 0x0004);
50 setbits_be16(&immap
->im_ioport
.iop_pcdir
, 0x0002 | 0x0004);
53 static inline void power_on_3_3(int slot
)
55 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
56 setbits_be16(&immap
->im_ioport
.iop_pcdat
, 0x0002);
57 setbits_be16(&immap
->im_ioport
.iop_pcdir
, 0x0002 | 0x0004);
61 * Function to retrieve the PIPR register, used for debuging purposes.
63 static inline uint32_t debug_get_pipr(void)
67 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
68 pipr
= in_be32(&immap
->im_pcmcia
.pcmc_pipr
);
74 static inline int check_card_is_absent(int slot
)
76 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
77 uint32_t pipr
= in_be32(&immap
->im_pcmcia
.pcmc_pipr
);
78 return pipr
& (0x18000000 >> (slot
<< 4));
81 #define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE
83 int pcmcia_hardware_enable(int slot
)
85 immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
88 debug("hardware_enable: " PCMCIA_BOARD_MSG
" Slot %c\n", 'A'+slot
);
93 * Configure SIUMCR to enable PCMCIA port B
94 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
98 clrbits_be32(&immap
->im_siu_conf
.sc_siumcr
, SIUMCR_DBGC11
);
100 /* Clear interrupt state, and disable interrupts */
101 out_be32(&immap
->im_pcmcia
.pcmc_pscr
, PCMCIA_MASK(slot
));
102 clrbits_be32(&immap
->im_pcmcia
.pcmc_per
, PCMCIA_MASK(slot
));
105 * Disable interrupts, DMA, and PCMCIA buffers
106 * (isolate the interface) and assert RESET signal
108 debug("Disable PCMCIA buffers and assert RESET\n");
110 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
111 reg
|= NSCU_GCRX_CXOE
;
113 PCMCIA_PGCRX(slot
) = reg
;
120 * Make sure there is a card in the slot, then configure the interface.
123 reg
= debug_get_pipr();
124 debug("[%d] %s: PIPR(%p)=0x%x\n", __LINE__
, __FUNCTION__
,
125 &immap
->im_pcmcia
.pcmc_pipr
, reg
);
127 if (check_card_is_absent(slot
)) {
128 printf (" No Card found\n");
135 mask
= PCMCIA_VS1(slot
) | PCMCIA_VS2(slot
);
136 reg
= in_be32(&immap
->im_pcmcia
.pcmc_pipr
);
137 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
139 (reg
& PCMCIA_VS1(slot
)) ? "n" : "ff",
140 (reg
& PCMCIA_VS2(slot
)) ? "n" : "ff");
142 if ((reg
& mask
) == mask
) {
144 puts (" 5.0V card found: ");
147 puts (" 3.3V card found: ");
151 /* VCC switch error flag, PCMCIA slot INPACK_ pin */
152 cp
->cp_pbdir
&= ~(0x0020 | 0x0010);
153 cp
->cp_pbpar
&= ~(0x0020 | 0x0010);
158 debug("Enable PCMCIA buffers and stop RESET\n");
159 reg
= PCMCIA_PGCRX(slot
);
160 reg
&= ~__MY_PCMCIA_GCRX_CXRESET
; /* active high */
161 reg
|= __MY_PCMCIA_GCRX_CXOE
; /* active low */
162 reg
&= ~NSCU_GCRX_CXOE
;
164 PCMCIA_PGCRX(slot
) = reg
;
166 udelay(250000); /* some cards need >150 ms to come up :-( */
168 debug("# hardware_enable done\n");
174 #if defined(CONFIG_CMD_PCMCIA)
175 int pcmcia_hardware_disable(int slot
)
179 debug("hardware_disable: " PCMCIA_BOARD_MSG
" Slot %c\n", 'A'+slot
);
181 /* remove all power */
184 debug("Disable PCMCIA buffers and assert RESET\n");
186 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
187 reg
|= NSCU_GCRX_CXOE
; /* active low */
189 PCMCIA_PGCRX(slot
) = reg
;
197 int pcmcia_voltage_set(int slot
, int vcc
, int vpp
)
202 debug("voltage_set: " PCMCIA_BOARD_MSG
203 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
204 'A'+slot
, vcc
/10, vcc
%10, vpp
/10, vcc
%10);
207 * Disable PCMCIA buffers (isolate the interface)
208 * and assert RESET signal
210 debug("Disable PCMCIA buffers and assert RESET\n");
211 reg
= PCMCIA_PGCRX(slot
);
212 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
213 reg
&= ~__MY_PCMCIA_GCRX_CXOE
; /* active low */
214 reg
|= NSCU_GCRX_CXOE
; /* active low */
216 PCMCIA_PGCRX(slot
) = reg
;
219 debug("PCMCIA power OFF\n");
225 case 33: power_on_3_3(slot
); break;
226 case 50: power_on_5_0(slot
); break;
230 /* Checking supported voltages */
231 pipr
= debug_get_pipr();
232 debug("PIPR: 0x%x --> %s\n", pipr
,
233 (pipr
& 0x00008000) ? "only 5 V" : "can do 3.3V");
236 debug("PCMCIA powered at %sV\n", (vcc
== 50) ? "5.0" : "3.3");
238 debug("PCMCIA powered down\n");
241 debug("Enable PCMCIA buffers and stop RESET\n");
242 reg
= PCMCIA_PGCRX(slot
);
243 reg
&= ~__MY_PCMCIA_GCRX_CXRESET
; /* active high */
244 reg
|= __MY_PCMCIA_GCRX_CXOE
; /* active low */
245 reg
&= ~NSCU_GCRX_CXOE
; /* active low */
247 PCMCIA_PGCRX(slot
) = reg
;
250 debug("voltage_set: " PCMCIA_BOARD_MSG
" Slot %c, DONE\n", slot
+'A');
254 #endif /* CONFIG_PCMCIA && CONFIG_TQM8xxL */