From: Christian Lamparter <chunkeey@googlemail.com>
Date: Thu, 30 Sep 2010 15:52:59 +0000 (+0200)
Subject: carl9170 firmware: remove bogoclock
X-Git-Tag: 1.9.0~5
X-Git-Url: https://jxself.org/git/?p=carl9170fw.git;a=commitdiff_plain;h=c1d4716037319ad03fa29cbe56d7cb8c3af67472

carl9170 firmware: remove bogoclock

There's no need to measure the cpu clock. The internal clock
source is (always) set to 80Mhz and only timer 0 to 3 are
affected by under-/overclocking.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---

diff --git a/carlfw/include/carl9170.h b/carlfw/include/carl9170.h
index 0878473..97c5705 100644
--- a/carlfw/include/carl9170.h
+++ b/carlfw/include/carl9170.h
@@ -70,7 +70,6 @@ enum carl9170_mac_reset_state {
 
 struct firmware_context_struct {
 	/* timer / clocks */
-	unsigned int bogoclock;			/* supposed to be CPU clock in KHz */
 	unsigned int counter;			/* main() cycles */
 
 	/* misc */
diff --git a/carlfw/src/fw.c b/carlfw/src/fw.c
index 9ec963b..fe16975 100644
--- a/carlfw/src/fw.c
+++ b/carlfw/src/fw.c
@@ -89,7 +89,7 @@ const struct carl9170_firmware_descriptor __section(fwdsc) carl9170fw_desc = {
 	     .release = CARL9170FW_VERSION_GIT),
 
 	FILL(dbg, DBG,
-	     .bogoclock_addr = cpu_to_le32(&fw.bogoclock),
+	     .bogoclock_addr = cpu_to_le32(0),
 	     .counter_addr = cpu_to_le32(&fw.counter),
 	     .rx_total_addr = cpu_to_le32(&fw.wlan.rx_total),
 	     .rx_overrun_addr = cpu_to_le32(&fw.wlan.rx_overruns),
diff --git a/carlfw/src/timer.c b/carlfw/src/timer.c
index 7cbd196..14c00e6 100644
--- a/carlfw/src/timer.c
+++ b/carlfw/src/timer.c
@@ -41,23 +41,6 @@ void timer_init(const unsigned int timer, const unsigned int interval)
 	orl(AR9170_TIMER_REG_INTERRUPT, BIT(timer));
 }
 
-static void clock_calibrate(void)
-{
-	uint32_t t0, loop = 13;
-
-	t0 = get_clock_counter();
-
-	/*
-	 * TODO:
-	 * Write this code in assembler, so the reading is accurate
-	 * and can be used to correct the timer intervals.
-	 */
-	while (((get_clock_counter() - t0) & (BIT(18)-1)) < 1000)
-		loop += 9;	/* really rough uOP estimation */
-
-	fw.bogoclock = loop;
-}
-
 void clock_set(const bool on, const enum cpu_clock_t _clock)
 {
 	/*
@@ -67,7 +50,6 @@ void clock_set(const bool on, const enum cpu_clock_t _clock)
 	 */
 
 	set(AR9170_PWR_REG_CLOCK_SEL, (uint32_t) ((on ? 0x70 : 0x600) | _clock));
-	clock_calibrate();
 }
 
 static void timer0_isr(void)