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path: root/drivers/tqm8xx_pcmcia.c
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Diffstat (limited to 'drivers/tqm8xx_pcmcia.c')
-rw-r--r--drivers/tqm8xx_pcmcia.c328
1 files changed, 328 insertions, 0 deletions
diff --git a/drivers/tqm8xx_pcmcia.c b/drivers/tqm8xx_pcmcia.c
new file mode 100644
index 0000000..8d4a85c
--- /dev/null
+++ b/drivers/tqm8xx_pcmcia.c
@@ -0,0 +1,328 @@
+/* -------------------------------------------------------------------- */
+/* TQM8xxL Boards by TQ Components */
+/* SC8xx Boards by SinoVee Microsystems */
+/* -------------------------------------------------------------------- */
+#include <common.h>
+#include <mpc8xx.h>
+#include <pcmcia.h>
+
+#undef CONFIG_PCMCIA
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+#define CONFIG_PCMCIA
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define CONFIG_PCMCIA
+#endif
+
+#if defined(CONFIG_PCMCIA) \
+ && (defined(CONFIG_TQM8xxL) || defined(CONFIG_SVM_SC8xx))
+
+#if defined(CONFIG_VIRTLAB2)
+#define PCMCIA_BOARD_MSG "Virtlab2"
+#elif defined(CONFIG_TQM8xxL)
+#define PCMCIA_BOARD_MSG "TQM8xxL"
+#elif defined(CONFIG_SVM_SC8xx)
+#define PCMCIA_BOARD_MSG "SC8xx"
+#endif
+
+#if defined(CONFIG_NSCU)
+
+#define power_config(slot) do {} while (0)
+#define power_off(slot) do {} while (0)
+#define power_on_5_0(slot) do {} while (0)
+#define power_on_3_3(slot) do {} while (0)
+
+#elif defined(CONFIG_HMI10)
+
+static inline void power_config(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ /*
+ * Configure Port B pins for
+ * 5 Volts Enable and 3 Volts enable
+ */
+ immap->im_cpm.cp_pbpar &= ~(0x00000300);
+}
+
+static inline void power_off(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ /* remove all power */
+ immap->im_cpm.cp_pbdat |= 0x00000300;
+}
+
+static inline void power_on_5_0(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ immap->im_cpm.cp_pbdat &= ~(0x0000100);
+ immap->im_cpm.cp_pbdir |= 0x00000300;
+}
+
+static inline void power_on_3_3(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ immap->im_cpm.cp_pbdat &= ~(0x0000200);
+ immap->im_cpm.cp_pbdir |= 0x00000300;
+}
+
+#elif defined(CONFIG_VIRTLAB2)
+
+#define power_config(slot) do {} while (0)
+static inline void power_off(int slot)
+{
+ volatile unsigned char *powerctl =
+ (volatile unsigned char *)PCMCIA_CTRL;
+ *powerctl = 0;
+}
+
+static inline void power_on_5_0(int slot)
+{
+ volatile unsigned char *powerctl =
+ (volatile unsigned char *)PCMCIA_CTRL;
+ *powerctl = 2; /* Enable 5V Vccout */
+}
+
+static inline void power_on_3_3(int slot)
+{
+ volatile unsigned char *powerctl =
+ (volatile unsigned char *)PCMCIA_CTRL;
+ *powerctl = 1; /* Enable 3.3V Vccout */
+}
+
+#else
+
+static inline void power_config(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ /*
+ * Configure Port C pins for
+ * 5 Volts Enable and 3 Volts enable
+ */
+ immap->im_ioport.iop_pcpar &= ~(0x0002 | 0x0004);
+ immap->im_ioport.iop_pcso &= ~(0x0002 | 0x0004);
+}
+
+static inline void power_off(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ immap->im_ioport.iop_pcdat &= ~(0x0002 | 0x0004);
+}
+
+static inline void power_on_5_0(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ immap->im_ioport.iop_pcdat |= 0x0004;
+ immap->im_ioport.iop_pcdir |= (0x0002 | 0x0004);
+}
+
+static inline void power_on_3_3(int slot)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ immap->im_ioport.iop_pcdat |= 0x0002;
+ immap->im_ioport.iop_pcdir |= (0x0002 | 0x0004);
+}
+
+#endif
+
+#ifdef CONFIG_HMI10
+static inline int check_card_is_absent(int slot)
+{
+ volatile pcmconf8xx_t *pcmp =
+ (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+ return pcmp->pcmc_pipr & (0x10000000 >> (slot << 4));
+}
+#else
+static inline int check_card_is_absent(int slot)
+{
+ volatile pcmconf8xx_t *pcmp =
+ (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+ return pcmp->pcmc_pipr & (0x18000000 >> (slot << 4));
+}
+#endif
+
+#ifdef NSCU_OE_INV
+#define NSCU_GCRX_CXOE 0
+#else
+#define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE
+#endif
+
+int pcmcia_hardware_enable(int slot)
+{
+ volatile pcmconf8xx_t *pcmp =
+ (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+ volatile sysconf8xx_t *sysp =
+ (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
+ uint reg, mask;
+
+ debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+ udelay(10000);
+
+ /*
+ * Configure SIUMCR to enable PCMCIA port B
+ * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
+ */
+ sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
+
+ /* clear interrupt state, and disable interrupts */
+ pcmp->pcmc_pscr = PCMCIA_MASK(slot);
+ pcmp->pcmc_per &= ~PCMCIA_MASK(slot);
+
+ /*
+ * Disable interrupts, DMA, and PCMCIA buffers
+ * (isolate the interface) and assert RESET signal
+ */
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = 0;
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= NSCU_GCRX_CXOE;
+
+ PCMCIA_PGCRX(slot) = reg;
+ udelay(500);
+
+ power_config(slot);
+ power_off(slot);
+
+ /*
+ * Make sure there is a card in the slot, then configure the interface.
+ */
+ udelay(10000);
+ debug ("[%d] %s: PIPR(%p)=0x%x\n", __LINE__,__FUNCTION__,
+ &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
+
+ if (check_card_is_absent(slot)) {
+ printf (" No Card found\n");
+ return (1);
+ }
+
+ /*
+ * Power On.
+ */
+ mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
+ reg = pcmp->pcmc_pipr;
+ debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
+ reg,
+ (reg&PCMCIA_VS1(slot))?"n":"ff",
+ (reg&PCMCIA_VS2(slot))?"n":"ff");
+
+ if ((reg & mask) == mask) {
+ power_on_5_0(slot);
+ puts (" 5.0V card found: ");
+ } else {
+ power_on_3_3(slot);
+ puts (" 3.3V card found: ");
+ }
+
+#if 0
+ /* VCC switch error flag, PCMCIA slot INPACK_ pin */
+ cp->cp_pbdir &= ~(0x0020 | 0x0010);
+ cp->cp_pbpar &= ~(0x0020 | 0x0010);
+ udelay(500000);
+#endif
+
+ udelay(1000);
+ debug ("Enable PCMCIA buffers and stop RESET\n");
+ reg = PCMCIA_PGCRX(slot);
+ reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
+ reg &= ~NSCU_GCRX_CXOE;
+
+ PCMCIA_PGCRX(slot) = reg;
+
+ udelay(250000); /* some cards need >150 ms to come up :-( */
+
+ debug ("# hardware_enable done\n");
+
+ return (0);
+}
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+int pcmcia_hardware_disable(int slot)
+{
+ volatile pcmconf8xx_t *pcmp =
+ (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+ u_long reg;
+
+ debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+
+ /* remove all power */
+ power_off(slot);
+
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = 0;
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= NSCU_GCRX_CXOE; /* active low */
+
+ PCMCIA_PGCRX(slot) = reg;
+
+ udelay(10000);
+
+ return (0);
+}
+#endif /* CFG_CMD_PCMCIA */
+
+int pcmcia_voltage_set(int slot, int vcc, int vpp)
+{
+#ifndef CONFIG_NSCU
+ volatile pcmconf8xx_t *pcmp =
+ (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+ u_long reg;
+
+ debug ("voltage_set: " PCMCIA_BOARD_MSG
+ " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
+ 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
+
+ /*
+ * Disable PCMCIA buffers (isolate the interface)
+ * and assert RESET signal
+ */
+ debug ("Disable PCMCIA buffers and assert RESET\n");
+ reg = PCMCIA_PGCRX(slot);
+ reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
+ reg |= NSCU_GCRX_CXOE; /* active low */
+
+ PCMCIA_PGCRX(slot) = reg;
+ udelay(500);
+
+ debug ("PCMCIA power OFF\n");
+ power_config(slot);
+ power_off(slot);
+
+ switch(vcc) {
+ case 0: break;
+ case 33: power_on_3_3(slot); break;
+ case 50: power_on_5_0(slot); break;
+ default: goto done;
+ }
+
+ /* Checking supported voltages */
+
+ debug("PIPR: 0x%x --> %s\n", pcmp->pcmc_pipr,
+ (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
+
+ if (vcc)
+ debug("PCMCIA powered at %sV\n", (vcc == 50) ? "5.0" : "3.3");
+ else
+ debug("PCMCIA powered down\n");
+
+done:
+ debug("Enable PCMCIA buffers and stop RESET\n");
+ reg = PCMCIA_PGCRX(slot);
+ reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
+ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
+ reg &= ~NSCU_GCRX_CXOE; /* active low */
+
+ PCMCIA_PGCRX(slot) = reg;
+ udelay(500);
+
+ debug("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", slot+'A');
+#endif /* CONFIG_NSCU */
+ return (0);
+}
+
+#endif /* CONFIG_PCMCIA && (CONFIG_TQM8xxL || CONFIG_SVM_SC8xx) */
generated by cgit v1.1 at 2024-11-23 23:26:56 +0000