[PATCH 2.4 IrDA] NSC '39x support
From: Jean Tourrilhes
Date: Thu Jan 15 2004 - 19:26:57 EST
ir244_nsc_39x-2.diff :
~~~~~~~~~~~~~~~~~~~~
<Original patch from Jan Frey>
o [FEATURE] Add support for NSC PC8739x chipset (IBM A/R31 laptops)
diff -u -p linux/include/net/irda/nsc-ircc.d5.h linux/include/net/irda/nsc-ircc.h
--- linux/include/net/irda/nsc-ircc.d5.h Wed Jan 14 18:18:54 2004
+++ linux/include/net/irda/nsc-ircc.h Wed Jan 14 18:21:16 2004
@@ -39,17 +39,29 @@
#define DMA_RX_MODE 0x04 /* I/O to mem, ++, demand. */
/* Config registers for the '108 */
-#define CFG_BAIC 0x00
-#define CFG_CSRT 0x01
-#define CFG_MCTL 0x02
+#define CFG_108_BAIC 0x00
+#define CFG_108_CSRT 0x01
+#define CFG_108_MCTL 0x02
/* Config registers for the '338 */
-#define CFG_FER 0x00
-#define CFG_FAR 0x01
-#define CFG_PTR 0x02
-#define CFG_PNP0 0x1b
-#define CFG_PNP1 0x1c
-#define CFG_PNP3 0x4f
+#define CFG_338_FER 0x00
+#define CFG_338_FAR 0x01
+#define CFG_338_PTR 0x02
+#define CFG_338_PNP0 0x1b
+#define CFG_338_PNP1 0x1c
+#define CFG_338_PNP3 0x4f
+
+/* Config registers for the '39x (in the logical device bank) */
+#define CFG_39X_LDN 0x07 /* Logical device number (Super I/O bank) */
+#define CFG_39X_SIOCF1 0x21 /* SuperI/O Config */
+#define CFG_39X_ACT 0x30 /* Device activation */
+#define CFG_39X_BASEH 0x60 /* Device base address (high bits) */
+#define CFG_39X_BASEL 0x61 /* Device base address (low bits) */
+#define CFG_39X_IRQNUM 0x70 /* Interrupt number & wake up enable */
+#define CFG_39X_IRQSEL 0x71 /* Interrupt select (edge/level + polarity) */
+#define CFG_39X_DMA0 0x74 /* DMA 0 configuration */
+#define CFG_39X_DMA1 0x75 /* DMA 1 configuration */
+#define CFG_39X_SPC 0xF0 /* Serial port configuration register */
/* Flags for configuration register CRF0 */
#define APEDCRC 0x02
diff -u -p linux/drivers/net/irda/nsc-ircc.d0.c linux/drivers/net/irda/nsc-ircc.c
--- linux/drivers/net/irda/nsc-ircc.d5.c Wed Jan 14 18:18:22 2004
+++ linux/drivers/net/irda/nsc-ircc.c Wed Jan 14 18:21:16 2004
@@ -83,8 +83,10 @@ static unsigned int dma[] = { 0, 0, 0, 0
static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info);
static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info);
+static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info);
static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info);
static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info);
+static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info);
/* These are the known NSC chips */
static nsc_chip_t chips[] = {
@@ -93,10 +95,16 @@ static nsc_chip_t chips[] = {
nsc_ircc_probe_108, nsc_ircc_init_108 },
{ "PC87338", { 0x398, 0x15c, 0x2e }, 0x08, 0xb0, 0xf8,
nsc_ircc_probe_338, nsc_ircc_init_338 },
+ /* Contributed by Jan Frey - IBM A30/A31 */
+ { "PC8739x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xea, 0xff,
+ nsc_ircc_probe_39x, nsc_ircc_init_39x },
+ { NULL }
+#if 0
+ /* Probably bogus, "PC8739x" should be the real thing. Jean II */
/* Contributed by Kevin Thayer - OmniBook 6100 */
{ "PC87338?", { 0x2e, 0x15c, 0x398 }, 0x08, 0x00, 0xf8,
nsc_ircc_probe_338, nsc_ircc_init_338 },
- { NULL }
+#endif
};
/* Max 4 instances for now */
@@ -439,7 +447,7 @@ static int nsc_ircc_init_108(nsc_chip_t
outb(0x00, cfg_base+1); /* Disable device */
/* Base Address and Interrupt Control Register (BAIC) */
- outb(0, cfg_base);
+ outb(CFG_108_BAIC, cfg_base);
switch (info->fir_base) {
case 0x3e8: outb(0x14, cfg_base+1); break;
case 0x2e8: outb(0x15, cfg_base+1); break;
@@ -459,7 +467,7 @@ static int nsc_ircc_init_108(nsc_chip_t
case 15: temp = 0x07; break;
default: ERROR("%s(), invalid irq", __FUNCTION__);
}
- outb(1, cfg_base);
+ outb(CFG_108_CSRT, cfg_base);
switch (info->dma) {
case 0: outb(0x08+temp, cfg_base+1); break;
@@ -468,7 +476,7 @@ static int nsc_ircc_init_108(nsc_chip_t
default: ERROR("%s(), invalid dma", __FUNCTION__);
}
- outb(2, cfg_base); /* Mode Control Register (MCTL) */
+ outb(CFG_108_MCTL, cfg_base); /* Mode Control Register (MCTL) */
outb(0x03, cfg_base+1); /* Enable device */
return 0;
@@ -486,7 +494,7 @@ static int nsc_ircc_probe_108(nsc_chip_t
int reg;
/* Read address and interrupt control register (BAIC) */
- outb(CFG_BAIC, cfg_base);
+ outb(CFG_108_BAIC, cfg_base);
reg = inb(cfg_base+1);
switch (reg & 0x03) {
@@ -508,7 +516,7 @@ static int nsc_ircc_probe_108(nsc_chip_t
__FUNCTION__, info->fir_base);
/* Read control signals routing register (CSRT) */
- outb(CFG_CSRT, cfg_base);
+ outb(CFG_108_CSRT, cfg_base);
reg = inb(cfg_base+1);
switch (reg & 0x07) {
@@ -557,7 +565,7 @@ static int nsc_ircc_probe_108(nsc_chip_t
IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma);
/* Read mode control register (MCTL) */
- outb(CFG_MCTL, cfg_base);
+ outb(CFG_108_MCTL, cfg_base);
reg = inb(cfg_base+1);
info->enabled = reg & 0x01;
@@ -594,13 +602,13 @@ static int nsc_ircc_probe_338(nsc_chip_t
int pnp;
/* Read funtion enable register (FER) */
- outb(CFG_FER, cfg_base);
+ outb(CFG_338_FER, cfg_base);
reg = inb(cfg_base+1);
info->enabled = (reg >> 2) & 0x01;
/* Check if we are in Legacy or PnP mode */
- outb(CFG_PNP0, cfg_base);
+ outb(CFG_338_PNP0, cfg_base);
reg = inb(cfg_base+1);
pnp = (reg >> 3) & 0x01;
@@ -615,7 +623,7 @@ static int nsc_ircc_probe_338(nsc_chip_t
info->fir_base = reg;
} else {
/* Read function address register (FAR) */
- outb(CFG_FAR, cfg_base);
+ outb(CFG_338_FAR, cfg_base);
reg = inb(cfg_base+1);
switch ((reg >> 4) & 0x03) {
@@ -665,22 +673,146 @@ static int nsc_ircc_probe_338(nsc_chip_t
info->sir_base = info->fir_base;
/* Read PnP register 1 (PNP1) */
- outb(CFG_PNP1, cfg_base);
+ outb(CFG_338_PNP1, cfg_base);
reg = inb(cfg_base+1);
info->irq = reg >> 4;
/* Read PnP register 3 (PNP3) */
- outb(CFG_PNP3, cfg_base);
+ outb(CFG_338_PNP3, cfg_base);
reg = inb(cfg_base+1);
info->dma = (reg & 0x07) - 1;
/* Read power and test register (PTR) */
- outb(CFG_PTR, cfg_base);
+ outb(CFG_338_PTR, cfg_base);
reg = inb(cfg_base+1);
info->suspended = reg & 0x01;
+
+ return 0;
+}
+
+
+/*
+ * Function nsc_ircc_init_39x (chip, info)
+ *
+ * Now that we know it's a '39x (see probe below), we need to
+ * configure it so we can use it.
+ *
+ * The NSC '338 chip is a Super I/O chip with a "bank" architecture,
+ * the configuration of the different functionality (serial, parallel,
+ * floppy...) are each in a different bank (Logical Device Number).
+ * The base address, irq and dma configuration registers are common
+ * to all functionalities (index 0x30 to 0x7F).
+ * There is only one configuration register specific to the
+ * serial port, CFG_39X_SPC.
+ * JeanII
+ *
+ * Note : this code was written by Jan Frey <janfrey@xxxxxx>
+ */
+static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info)
+{
+ int cfg_base = info->cfg_base;
+ int enabled;
+
+ /* User is shure about his config... accept it. */
+ IRDA_DEBUG(2, "%s(): nsc_ircc_init_39x (user settings): "
+ "io=0x%04x, irq=%d, dma=%d\n",
+ __FUNCTION__, info->fir_base, info->irq, info->dma);
+
+ /* Access bank for SP2 */
+ outb(CFG_39X_LDN, cfg_base);
+ outb(0x02, cfg_base+1);
+
+ /* Configure SP2 */
+
+ /* We want to enable the device if not enabled */
+ outb(CFG_39X_ACT, cfg_base);
+ enabled = inb(cfg_base+1) & 0x01;
+
+ if (!enabled) {
+ /* Enable the device */
+ outb(CFG_39X_SIOCF1, cfg_base);
+ outb(0x01, cfg_base+1);
+ /* May want to update info->enabled. Jean II */
+ }
+
+ /* Enable UART bank switching (bit 7) ; Sets the chip to normal
+ * power mode (wake up from sleep mode) (bit 1) */
+ outb(CFG_39X_SPC, cfg_base);
+ outb(0x82, cfg_base+1);
+
+ return 0;
+}
+
+/*
+ * Function nsc_ircc_probe_39x (chip, info)
+ *
+ * Test if we really have a '39x chip at the given address
+ *
+ * Note : this code was written by Jan Frey <janfrey@xxxxxx>
+ */
+static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info)
+{
+ int cfg_base = info->cfg_base;
+ int reg1, reg2, irq, irqt, dma1, dma2;
+ int enabled, susp;
+
+ IRDA_DEBUG(2, "%s(), nsc_ircc_probe_39x, base=%d\n",
+ __FUNCTION__, cfg_base);
+
+ /* This function should be executed with irq off to avoid
+ * another driver messing with the Super I/O bank - Jean II */
+
+ /* Access bank for SP2 */
+ outb(CFG_39X_LDN, cfg_base);
+ outb(0x02, cfg_base+1);
+
+ /* Read infos about SP2 ; store in info struct */
+ outb(CFG_39X_BASEH, cfg_base);
+ reg1 = inb(cfg_base+1);
+ outb(CFG_39X_BASEL, cfg_base);
+ reg2 = inb(cfg_base+1);
+ info->fir_base = (reg1 << 8) | reg2;
+
+ outb(CFG_39X_IRQNUM, cfg_base);
+ irq = inb(cfg_base+1);
+ outb(CFG_39X_IRQSEL, cfg_base);
+ irqt = inb(cfg_base+1);
+ info->irq = irq;
+
+ outb(CFG_39X_DMA0, cfg_base);
+ dma1 = inb(cfg_base+1);
+ outb(CFG_39X_DMA1, cfg_base);
+ dma2 = inb(cfg_base+1);
+ info->dma = dma1 -1;
+
+ outb(CFG_39X_ACT, cfg_base);
+ info->enabled = enabled = inb(cfg_base+1) & 0x01;
+
+ outb(CFG_39X_SPC, cfg_base);
+ susp = 1 - ((inb(cfg_base+1) & 0x02) >> 1);
+
+ IRDA_DEBUG(2, "%s(): io=0x%02x%02x, irq=%d (type %d), rxdma=%d, txdma=%d, enabled=%d (suspended=%d)\n", __FUNCTION__, reg1,reg2,irq,irqt,dma1,dma2,enabled,susp);
+
+ /* Configure SP2 */
+
+ /* We want to enable the device if not enabled */
+ outb(CFG_39X_ACT, cfg_base);
+ enabled = inb(cfg_base+1) & 0x01;
+
+ if (!enabled) {
+ /* Enable the device */
+ outb(CFG_39X_SIOCF1, cfg_base);
+ outb(0x01, cfg_base+1);
+ /* May want to update info->enabled. Jean II */
+ }
+
+ /* Enable UART bank switching (bit 7) ; Sets the chip to normal
+ * power mode (wake up from sleep mode) (bit 1) */
+ outb(CFG_39X_SPC, cfg_base);
+ outb(0x82, cfg_base+1);
return 0;
}
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/