8 #if defined(CONFIG_CMD_PCMCIA)
12 #if 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 pcmconf8xx_t *pcmp;
33 volatile sysconf8xx_t *sysp;
38 debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
40 /* Switch on PCMCIA port in PIC register 0x60 */
41 reg = pic_read (0x60);
42 debug ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
44 /* reg |= 0x08; Vpp not needed */
45 pic_write (0x60, reg);
47 reg = pic_read (0x60);
48 printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
52 sysp = (sysconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_siu_conf));
53 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
56 * Configure SIUMCR to enable PCMCIA port B
57 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
59 sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
61 /* clear interrupt state, and disable interrupts */
62 pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
63 pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
66 * Disable interrupts, DMA, and PCMCIA buffers
67 * (isolate the interface) and assert RESET signal
69 debug ("Disable PCMCIA buffers and assert RESET\n");
71 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
72 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
73 PCMCIA_PGCRX(_slot_) = reg;
77 * Make sure there is a card in the slot, then configure the interface.
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");
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",
95 (reg&PCMCIA_VS1(slot))?"n":"ff",
96 (reg&PCMCIA_VS2(slot))?"n":"ff");
97 if ((reg & mask) == mask) {
98 val = 0; /* VCCB3/5 = 0 ==> use Vx = 5.0 V */
99 puts (" 5.0V card found: ");
101 val = MAX1604_VCC_35; /* VCCB3/5 = 1 ==> use Vy = 3.3 V */
102 puts (" 3.3V card found: ");
106 val |= MAX1604_OP_SUS | MAX1604_VCCBON;
107 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
108 i2c_write (CONFIG_SYS_I2C_POWER_A_ADDR, 0, 0, &val, 1);
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;
118 udelay(250000); /* some cards need >150 ms to come up :-( */
120 debug ("# hardware_enable done\n");
126 #if defined(CONFIG_CMD_PCMCIA)
127 int pcmcia_hardware_disable(int slot)
129 volatile immap_t *immap;
130 volatile pcmconf8xx_t *pcmp;
134 debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
136 immap = (immap_t *)CONFIG_SYS_IMMR;
137 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
139 /* remove all power, put output in high impedance state */
140 val = MAX1604_VCCBHIZ | MAX1604_VPPBHIZ;
141 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
142 i2c_write (CONFIG_SYS_I2C_POWER_A_ADDR, 0, 0, &val, 1);
144 /* Configure PCMCIA General Control Register */
145 debug ("Disable PCMCIA buffers and assert RESET\n");
147 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
148 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
149 PCMCIA_PGCRX(_slot_) = reg;
151 /* Switch off PCMCIA port in PIC register 0x60 */
152 reg = pic_read (0x60);
153 debug ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
156 pic_write (0x60, reg);
158 reg = pic_read (0x60);
159 printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
168 int pcmcia_voltage_set(int slot, int vcc, int vpp)
170 volatile pcmconf8xx_t *pcmp;
174 debug ("voltage_set: "
176 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
177 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
179 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
181 * Disable PCMCIA buffers (isolate the interface)
182 * and assert RESET signal
184 debug ("Disable PCMCIA buffers and assert RESET\n");
185 reg = PCMCIA_PGCRX(_slot_);
186 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
187 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
188 PCMCIA_PGCRX(_slot_) = reg;
192 * Turn off all power (switch to high impedance)
194 debug ("PCMCIA power OFF\n");
195 val = MAX1604_VCCBHIZ | MAX1604_VPPBHIZ;
196 i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
197 i2c_write (CONFIG_SYS_I2C_POWER_A_ADDR, 0, 0, &val, 1);
202 case 33: val = MAX1604_VCC_35; break;
207 /* Checking supported voltages */
209 debug ("PIPR: 0x%x --> %s\n",
211 (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
213 i2c_write (CONFIG_SYS_I2C_POWER_A_ADDR, 0, 0, &val, 1);
215 debug ("PCMCIA powered at %sV\n",
216 (val & MAX1604_VCC_35) ? "3.3" : "5.0");
218 debug ("PCMCIA powered down\n");
222 debug ("Enable PCMCIA buffers and stop RESET\n");
223 reg = PCMCIA_PGCRX(_slot_);
224 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
225 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
226 PCMCIA_PGCRX(_slot_) = reg;
229 debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
234 #endif /* CONFIG_PCMCIA */