#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>
+#include <linux/delay.h>
#include <asm/hardware.h>
#include <asm/hardware/sa1111.h>
+#include <asm/mach-types.h>
#include "sa1111_generic.h"
lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
- unsigned long flags, gpio, misc_wr;
- int ret = 1;
- struct pcmcia_state new_state;
-
- local_irq_save(flags);
-
- gpio = PA_DWR;
- misc_wr = LUB_MISC_WR;
-
- /* Lubbock uses the Maxim MAX1602, with the following connections:
- *
- * Socket 0 (PCMCIA):
- * MAX1602 Lubbock Register
- * Pin Signal
- * ----- ------- ----------------------
- * A0VPP S0_PWR0 SA-1111 GPIO A<0>
- * A1VPP S0_PWR1 SA-1111 GPIO A<1>
- * A0VCC S0_PWR2 SA-1111 GPIO A<2>
- * A1VCC S0_PWR3 SA-1111 GPIO A<3>
- * VX VCC
- * VY +3.3V
- * 12IN +12V
- * CODE +3.3V Cirrus Code, CODE = High (VY)
- *
- * Socket 1 (CF):
- * MAX1602 Lubbock Register
- * Pin Signal
- * ----- ------- ----------------------
- * A0VPP GND VPP is not connected
- * A1VPP GND VPP is not connected
- * A0VCC S1_PWR0 MISC_WR<14>
- * A1VCC S1_PWR0 MISC_WR<15>
- * VX VCC
- * VY +3.3V
- * 12IN GND VPP is not connected
- * CODE +3.3V Cirrus Code, CODE = High (VY)
- *
- */
-
-again:
- switch(skt->nr){
- case 0:
-
- switch(state->Vcc){
- case 0:
- gpio &= ~(GPIO_bit(2) | GPIO_bit(3));
- break;
-
- case 33:
- gpio = (gpio & ~(GPIO_bit(2) | GPIO_bit(3))) | GPIO_bit(3);
- break;
-
- case 50:
- gpio = (gpio & ~(GPIO_bit(2) | GPIO_bit(3))) | GPIO_bit(2);
- break;
-
- default:
- printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, state->Vcc);
- ret = -1;
- }
-
- switch(state->Vpp){
- case 0:
- gpio &= ~(GPIO_bit(0) | GPIO_bit(1));
- break;
-
- case 120:
- gpio = (gpio & ~(GPIO_bit(0) | GPIO_bit(1))) | GPIO_bit(1);
- break;
-
- default:
- /* REVISIT: I'm not sure about this? Is this correct?
- Is it always safe or do we have potential problems
- with bogus combinations of Vcc and Vpp settings? */
- if(state->Vpp == state->Vcc)
- gpio = (gpio & ~(GPIO_bit(0) | GPIO_bit(1))) | GPIO_bit(0);
- else {
- printk(KERN_ERR "%s(): unrecognized Vpp %u\n", __FUNCTION__, state->Vpp);
- ret = -1;
- break;
- }
- }
-
- break;
-
- case 1:
- switch(state->Vcc){
- case 0:
- misc_wr &= ~((1 << 15) | (1 << 14));
- break;
-
- case 33:
- misc_wr = (misc_wr & ~(1 << 15)) | (1 << 14);
- gpio = (gpio & ~(GPIO_bit(2) | GPIO_bit(3))) | GPIO_bit(2);
- break;
-
- case 50:
- misc_wr = (misc_wr & ~(1 << 15)) | (1 << 14);
- break;
-
- default:
- printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, state->Vcc);
- ret = -1;
- break;
- }
-
- if(state->Vpp!=state->Vcc && state->Vpp!=0){
- printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n", __FUNCTION__, state->Vpp);
- ret = -1;
- break;
- }
-
- break;
-
- default:
- ret = -1;
- }
-
- if (ret >= 0) {
- sa1111_pcmcia_configure_socket(skt, state);
- LUB_MISC_WR = misc_wr;
- PA_DWR = gpio;
- }
-
- if (ret > 0) {
- ret = 0;
+ unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set;
+ int ret = 0;
+
+ pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0;
+
+ /* Lubbock uses the Maxim MAX1602, with the following connections:
+ *
+ * Socket 0 (PCMCIA):
+ * MAX1602 Lubbock Register
+ * Pin Signal
+ * ----- ------- ----------------------
+ * A0VPP S0_PWR0 SA-1111 GPIO A<0>
+ * A1VPP S0_PWR1 SA-1111 GPIO A<1>
+ * A0VCC S0_PWR2 SA-1111 GPIO A<2>
+ * A1VCC S0_PWR3 SA-1111 GPIO A<3>
+ * VX VCC
+ * VY +3.3V
+ * 12IN +12V
+ * CODE +3.3V Cirrus Code, CODE = High (VY)
+ *
+ * Socket 1 (CF):
+ * MAX1602 Lubbock Register
+ * Pin Signal
+ * ----- ------- ----------------------
+ * A0VPP GND VPP is not connected
+ * A1VPP GND VPP is not connected
+ * A0VCC S1_PWR0 MISC_WR<14>
+ * A1VCC S1_PWR1 MISC_WR<15>
+ * VX VCC
+ * VY +3.3V
+ * 12IN GND VPP is not connected
+ * CODE +3.3V Cirrus Code, CODE = High (VY)
+ *
+ */
+
+ again:
+ switch (skt->nr) {
+ case 0:
+ pa_dwr_mask = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
+
+ switch (state->Vcc) {
+ case 0: /* Hi-Z */
+ break;
+
+ case 33: /* VY */
+ pa_dwr_set |= GPIO_A3;
+ break;
+
+ case 50: /* VX */
+ pa_dwr_set |= GPIO_A2;
+ break;
+
+ default:
+ printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+ __FUNCTION__, state->Vcc);
+ ret = -1;
+ }
+
+ switch (state->Vpp) {
+ case 0: /* Hi-Z */
+ break;
+
+ case 120: /* 12IN */
+ pa_dwr_set |= GPIO_A1;
+ break;
+
+ default: /* VCC */
+ if (state->Vpp == state->Vcc)
+ pa_dwr_set |= GPIO_A0;
+ else {
+ printk(KERN_ERR "%s(): unrecognized Vpp %u\n",
+ __FUNCTION__, state->Vpp);
+ ret = -1;
+ break;
+ }
+ }
+ break;
+
+ case 1:
+ misc_mask = (1 << 15) | (1 << 14);
+
+ switch (state->Vcc) {
+ case 0: /* Hi-Z */
+ break;
+
+ case 33: /* VY */
+ misc_set |= 1 << 15;
+ break;
+
+ case 50: /* VX */
+ misc_set |= 1 << 14;
+ break;
+
+ default:
+ printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+ __FUNCTION__, state->Vcc);
+ ret = -1;
+ break;
+ }
+
+ if (state->Vpp != state->Vcc && state->Vpp != 0) {
+ printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n",
+ __FUNCTION__, state->Vpp);
+ ret = -1;
+ break;
+ }
+ break;
+
+ default:
+ ret = -1;
+ }
+
+ if (ret == 0)
+ ret = sa1111_pcmcia_configure_socket(skt, state);
+
+ if (ret == 0) {
+ lubbock_set_misc_wr(misc_mask, misc_set);
+ sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
+ }
+
#if 1
- /*
- * HACK ALERT:
- * We can't sense the voltage properly on Lubbock before actually
- * applying some power to the socket (catch 22).
- * Resense the socket Voltage Sense pins after applying socket power.
- */
- sa1111_pcmcia_socket_state(skt, &new_state);
- if (state->Vcc == 33 && !new_state.vs_3v && !new_state.vs_Xv) {
- /* Switch to 5V, Configure socket with 5V voltage */
- PA_DWR &= ~(GPIO_bit(0) | GPIO_bit(1) | GPIO_bit(2) | GPIO_bit(3));
- PA_DDR &= ~(GPIO_bit(0) | GPIO_bit(1) | GPIO_bit(2) | GPIO_bit(3));
- /* We need to hack around the const qualifier as well to keep this
- ugly workaround localized and not force it to the rest of the code.
- Barf bags avaliable in the seat pocket in front of you! */
- ((socket_state_t *)state)->Vcc = 50;
- ((socket_state_t *)state)->Vpp = 50;
- goto again;
- }
+ if (ret == 0 && state->Vcc == 33) {
+ struct pcmcia_state new_state;
+
+ /*
+ * HACK ALERT:
+ * We can't sense the voltage properly on Lubbock before
+ * actually applying some power to the socket (catch 22).
+ * Resense the socket Voltage Sense pins after applying
+ * socket power.
+ *
+ * Note: It takes about 2.5ms for the MAX1602 VCC output
+ * to rise.
+ */
+ mdelay(3);
+
+ sa1111_pcmcia_socket_state(skt, &new_state);
+
+ if (!new_state.vs_3v && !new_state.vs_Xv) {
+ /*
+ * Switch to 5V, Configure socket with 5V voltage
+ */
+ lubbock_set_misc_wr(misc_mask, 0);
+ sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, 0);
+
+ /*
+ * It takes about 100ms to turn off Vcc.
+ */
+ mdelay(100);
+
+ /*
+ * We need to hack around the const qualifier as
+ * well to keep this ugly workaround localized and
+ * not force it to the rest of the code. Barf bags
+ * avaliable in the seat pocket in front of you!
+ */
+ ((socket_state_t *)state)->Vcc = 50;
+ ((socket_state_t *)state)->Vpp = 50;
+ goto again;
+ }
+ }
#endif
- }
- local_irq_restore(flags);
- return ret;
+ return ret;
}
static struct pcmcia_low_level lubbock_pcmcia_ops = {
#include "pxa2xx_base.h"
-int __init pcmcia_lubbock_init(struct device *dev)
+int __init pcmcia_lubbock_init(struct sa1111_dev *sadev)
{
int ret = -ENODEV;
* Set GPIO_A<3:0> to be outputs for the MAX1600,
* and switch to standby mode.
*/
- PA_DWR = 0;
- PA_DDR = 0;
- PA_SDR = 0;
- PA_SSR = 0;
+ sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
+ sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
+ sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
/* Set CF Socket 1 power to standby mode. */
- LUB_MISC_WR &= ~(GPIO_bit(15) | GPIO_bit(14));
+ lubbock_set_misc_wr((1 << 15) | (1 << 14), 0);
- dev->platform_data = &lubbock_pcmcia_ops;
- ret = pxa2xx_drv_pcmcia_probe(dev);
+ sadev->dev.platform_data = &lubbock_pcmcia_ops;
+ ret = pxa2xx_drv_pcmcia_probe(&sadev->dev);
}
return ret;
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