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Today's Topics:
1. r4672 - developers/werner/wlan-spi/patches
([EMAIL PROTECTED])
2. r4673 - developers/werner/ahrt/host/tmc/lib
([EMAIL PROTECTED])
--- Begin Message ---
Author: werner
Date: 2008-09-27 02:22:28 +0200 (Sat, 27 Sep 2008)
New Revision: 4672
Added:
developers/werner/wlan-spi/patches/dont-poll-irq.patch
developers/werner/wlan-spi/patches/tweak-spi.patch
Modified:
developers/werner/wlan-spi/patches/gta02-no-glamo-mmc.patch
developers/werner/wlan-spi/patches/hack-silence-battery.patch
developers/werner/wlan-spi/patches/series
Log:
First steps towards getting S3C SPI to work. Still freaks out at higher
clock speeds and interrupt mode is actually the least efficient possible
mode.
Added: developers/werner/wlan-spi/patches/dont-poll-irq.patch
===================================================================
--- developers/werner/wlan-spi/patches/dont-poll-irq.patch
(rev 0)
+++ developers/werner/wlan-spi/patches/dont-poll-irq.patch 2008-09-27
00:22:28 UTC (rev 4672)
@@ -0,0 +1,33 @@
+The interrupt polling interferes with monitoring of the SDIO transactions.
+Disable it when debugging.
+
+Index: korig/drivers/mmc/core/sdio_irq.c
+===================================================================
+--- korig.orig/drivers/mmc/core/sdio_irq.c 2008-09-22 20:50:31.000000000
-0300
++++ korig/drivers/mmc/core/sdio_irq.c 2008-09-22 20:51:13.000000000 -0300
+@@ -70,7 +70,7 @@
+ unsigned long period, idle_period;
+ int ret;
+
+- sched_setscheduler(current, SCHED_FIFO, ¶m);
++// sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ /*
+ * We want to allow for SDIO cards to work even on non SDIO
+@@ -102,7 +102,7 @@
+ ret = __mmc_claim_host(host, &host->sdio_irq_thread_abort);
+ if (ret)
+ break;
+- ret = process_sdio_pending_irqs(host->card);
++// ret = process_sdio_pending_irqs(host->card);
+ mmc_release_host(host);
+
+ /*
+@@ -128,6 +128,7 @@
+ }
+ }
+
++yield();
+ set_task_state(current, TASK_INTERRUPTIBLE);
+ if (host->caps & MMC_CAP_SDIO_IRQ)
+ host->ops->enable_sdio_irq(host, 1);
Modified: developers/werner/wlan-spi/patches/gta02-no-glamo-mmc.patch
===================================================================
--- developers/werner/wlan-spi/patches/gta02-no-glamo-mmc.patch 2008-09-25
04:59:33 UTC (rev 4671)
+++ developers/werner/wlan-spi/patches/gta02-no-glamo-mmc.patch 2008-09-27
00:22:28 UTC (rev 4672)
@@ -7,8 +7,17 @@
Index: korig/arch/arm/mach-s3c2440/mach-gta02.c
===================================================================
---- korig.orig/arch/arm/mach-s3c2440/mach-gta02.c 2008-09-09
21:18:55.000000000 -0300
-+++ korig/arch/arm/mach-s3c2440/mach-gta02.c 2008-09-09 21:20:25.000000000
-0300
+--- korig.orig/arch/arm/mach-s3c2440/mach-gta02.c 2008-09-17
19:37:50.000000000 -0300
++++ korig/arch/arm/mach-s3c2440/mach-gta02.c 2008-09-26 20:29:53.000000000
-0300
+@@ -1239,7 +1239,7 @@
+ static struct spi_board_info gta02_spi_mmc_bdinfo = {
+ .modalias = "mmc_spi",
+ .irq = IRQ_EINT3, /* unused ? */
+- .max_speed_hz = 1 * 1000 * 1000,
++ .max_speed_hz = 25 * 1000 * 1000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .mode = SPI_MODE_0,
@@ -1476,12 +1476,14 @@
static void gta02_glamo_mci_suspending(struct platform_device *dev)
Modified: developers/werner/wlan-spi/patches/hack-silence-battery.patch
===================================================================
--- developers/werner/wlan-spi/patches/hack-silence-battery.patch
2008-09-25 04:59:33 UTC (rev 4671)
+++ developers/werner/wlan-spi/patches/hack-silence-battery.patch
2008-09-27 00:22:28 UTC (rev 4672)
@@ -1,7 +1,7 @@
Index: korig/drivers/power/power_supply_sysfs.c
===================================================================
---- korig.orig/drivers/power/power_supply_sysfs.c 2008-09-10
14:32:02.000000000 -0300
-+++ korig/drivers/power/power_supply_sysfs.c 2008-09-10 14:32:18.000000000
-0300
+--- korig.orig/drivers/power/power_supply_sysfs.c 2008-09-26
21:18:02.000000000 -0300
++++ korig/drivers/power/power_supply_sysfs.c 2008-09-26 21:18:44.000000000
-0300
@@ -59,9 +59,11 @@
ret = psy->get_property(psy, off, &value);
@@ -14,3 +14,16 @@
return ret;
}
+Index: korig/arch/arm/mach-s3c2440/mach-gta02.c
+===================================================================
+--- korig.orig/arch/arm/mach-s3c2440/mach-gta02.c 2008-09-26
21:19:03.000000000 -0300
++++ korig/arch/arm/mach-s3c2440/mach-gta02.c 2008-09-26 21:19:07.000000000
-0300
+@@ -1239,7 +1239,7 @@
+ static struct spi_board_info gta02_spi_mmc_bdinfo = {
+ .modalias = "mmc_spi",
+ .irq = IRQ_EINT3, /* unused ? */
+- .max_speed_hz = 25 * 1000 * 1000,
++ .max_speed_hz = 10 * 1000 * 1000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .mode = SPI_MODE_0,
Modified: developers/werner/wlan-spi/patches/series
===================================================================
--- developers/werner/wlan-spi/patches/series 2008-09-25 04:59:33 UTC (rev
4671)
+++ developers/werner/wlan-spi/patches/series 2008-09-27 00:22:28 UTC (rev
4672)
@@ -25,4 +25,6 @@
ar6k-essid-one-and-32.patch
gta02-no-glamo-mmc.patch
hack-silence-battery.patch
+tweak-spi.patch
+#dont-poll-irq.patch
#try
Added: developers/werner/wlan-spi/patches/tweak-spi.patch
===================================================================
--- developers/werner/wlan-spi/patches/tweak-spi.patch
(rev 0)
+++ developers/werner/wlan-spi/patches/tweak-spi.patch 2008-09-27 00:22:28 UTC
(rev 4672)
@@ -0,0 +1,63 @@
+Work in progress. Makes spi_s3c24xx.c work for 1 and 10MHz.
+Something breaks at 20 or 25MHz.
+
+Index: korig/drivers/spi/spi_s3c24xx.c
+===================================================================
+--- korig.orig/drivers/spi/spi_s3c24xx.c 2008-09-26 20:47:30.000000000
-0300
++++ korig/drivers/spi/spi_s3c24xx.c 2008-09-26 21:06:23.000000000 -0300
+@@ -198,6 +198,29 @@
+ writeb(hw_txbyte(hw, 0), hw->regs + S3C2410_SPTDAT);
+ wait_for_completion(&hw->done);
+
++ /*
++ * Get the last byte. Since we don't have more data we can send in
++ * order to clock the byte out of the SPI system, we need to wait and
++ * to provide a clock by a dummy read.
++ *
++ * Duh, I'm just handwaving here about possible explanations of what's
++ * going on in the hardware. This is the voodoo ritual that makes it
++ * work while anything else fails.
++ */
++ if (hw->rx && hw->count) {
++ udelay(1+10*1000000/spi->max_speed_hz);
++ //readb(hw->regs + S3C2410_SPRDAT);
++ hw->rx[hw->count-1] = readb(hw->regs + S3C2410_SPRDAT);
++ }
++
++ if (0&&t->rx_buf && t->len > 18) {
++ int i;
++
++ printk(KERN_INFO "RX (%p):", t->rx_buf);
++ for (i = 0; i != t->len; i++)
++ printk(" %02x", ((u8 *) t->rx_buf)[i]);
++ printk("\n");
++ }
+ return hw->count;
+ }
+
+@@ -233,8 +256,23 @@
+
+ hw->count++;
+
+- if (hw->rx)
+- hw->rx[count] = readb(hw->regs + S3C2410_SPRDAT);
++ /*
++ * Misfeature #1: the first byte received can only be read after
++ * writing the second byte to send to the shifter.
++ *
++ * Misfeature #2: we need to consume all data received.
++ *
++ * Oddly enough, it's not sufficient if we do a large number of SPRDAT
++ * reads before or right after starting the transmission. We really
++ * have to fetch a byte for each byte we send, or the SPI engine gets
++ * upset.
++ */
++ if (hw->rx) {
++ u8 b = readb(hw->regs + S3C2410_SPRDAT);
++
++ if (count)
++ hw->rx[count-1] = b;
++ }
+
+ count++;
+
--- End Message ---
--- Begin Message ---
Author: werner
Date: 2008-09-27 02:49:01 +0200 (Sat, 27 Sep 2008)
New Revision: 4673
Modified:
developers/werner/ahrt/host/tmc/lib/crc.py
developers/werner/ahrt/host/tmc/lib/scope.py
Log:
Highlight:
- logic analyzer downloads are now about 66% faster
Details:
- lib/crc.py (crc.crc16): didn't even run
- lib/scope.py (rigol_la_data): only add data if it is different from the
previous sample
Modified: developers/werner/ahrt/host/tmc/lib/crc.py
===================================================================
--- developers/werner/ahrt/host/tmc/lib/crc.py 2008-09-27 00:22:28 UTC (rev
4672)
+++ developers/werner/ahrt/host/tmc/lib/crc.py 2008-09-27 00:49:01 UTC (rev
4673)
@@ -86,6 +86,6 @@
return crc
def crc16(self, crc, bytes):
- for b in bytes(crc, bytes):
+ for b in bytes:
crc = (crc >> 8) ^ self.crc16_syndrome[(crc ^ b) & 0xff]
return crc
Modified: developers/werner/ahrt/host/tmc/lib/scope.py
===================================================================
--- developers/werner/ahrt/host/tmc/lib/scope.py 2008-09-27 00:22:28 UTC
(rev 4672)
+++ developers/werner/ahrt/host/tmc/lib/scope.py 2008-09-27 00:49:01 UTC
(rev 4673)
@@ -235,13 +235,29 @@
res = []
for b in range(0, 16):
res.append(digital())
+
+ prev_low = 0
+ prev_high = 0
+
i = 424
while i != 1624:
div = (i-1024)/100.0
t = t0+div*td
- for b in range(0, 8):
- res[b].append(t, (ord(s[i]) & (1 << b)) != 0)
- res[b+8].append(t, (ord(s[i+1]) & (1 << b)) != 0)
+
+ doit = i == 424 or i == 1622
+
+ byte = ord(s[i])
+ if byte ^ prev_low or doit:
+ prev_low = byte
+ for b in range(0, 8):
+ res[b].append(t, (byte & (1 << b)) != 0)
+
+ byte = ord(s[i+1])
+ if byte ^ prev_high or doit:
+ prev_high = byte
+ for b in range(0, 8):
+ res[b+8].append(t, (byte & (1 << b)) != 0)
+
i += 2
return res
--- End Message ---
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