8 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) || defined(CONFIG_CMD_PCMCIA)
12 #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || defined(CONFIG_CMD_IDE)) && defined(CONFIG_IDE_8xx_PCCARD)
18 #define PCMCIA_BOARD_MSG "LWMON"
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
30 int pcmcia_hardware_enable(int slot)
32 volatile immap_t *immap;
33 volatile cpm8xx_t *cp;
34 volatile pcmconf8xx_t *pcmp;
35 volatile sysconf8xx_t *sysp;
40 debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
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);
46 /* reg |= 0x08; Vpp not needed */
47 pic_write (0x60, reg);
49 reg = pic_read (0x60);
50 printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
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));
60 * Configure SIUMCR to enable PCMCIA port B
61 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
63 sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
65 /* clear interrupt state, and disable interrupts */
66 pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
67 pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
70 * Disable interrupts, DMA, and PCMCIA buffers
71 * (isolate the interface) and assert RESET signal
73 debug ("Disable PCMCIA buffers and assert RESET\n");
75 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
76 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
77 PCMCIA_PGCRX(_slot_) = reg;
81 * Make sure there is a card in the slot, then configure the interface.
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");
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",
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: ");
105 val = MAX1604_VCC_35; /* VCCB3/5 = 1 ==> use Vy = 3.3 V */
106 puts (" 3.3V card found: ");
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);
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;
122 udelay(250000); /* some cards need >150 ms to come up :-( */
124 debug ("# hardware_enable done\n");
130 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) || defined(CONFIG_CMD_PCMCIA)
131 int pcmcia_hardware_disable(int slot)
133 volatile immap_t *immap;
134 volatile pcmconf8xx_t *pcmp;
138 debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
140 immap = (immap_t *)CFG_IMMR;
141 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
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);
148 /* Configure PCMCIA General Control Register */
149 debug ("Disable PCMCIA buffers and assert RESET\n");
151 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
152 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
153 PCMCIA_PGCRX(_slot_) = reg;
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);
160 pic_write (0x60, reg);
162 reg = pic_read (0x60);
163 printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
169 #endif /* CFG_CMD_PCMCIA */
172 int pcmcia_voltage_set(int slot, int vcc, int vpp)
174 volatile immap_t *immap;
175 volatile pcmconf8xx_t *pcmp;
179 debug ("voltage_set: "
181 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
182 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
184 immap = (immap_t *)CFG_IMMR;
185 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
187 * Disable PCMCIA buffers (isolate the interface)
188 * and assert RESET signal
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;
198 * Turn off all power (switch to high impedance)
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);
208 case 33: val = MAX1604_VCC_35; break;
213 /* Checking supported voltages */
215 debug ("PIPR: 0x%x --> %s\n",
217 (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
219 i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1);
221 debug ("PCMCIA powered at %sV\n",
222 (val & MAX1604_VCC_35) ? "3.3" : "5.0");
224 debug ("PCMCIA powered down\n");
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;
235 debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
240 #endif /* CONFIG_PCMCIA */