From: Peter Hunt <peter_j_hunt@hotmail.com>
Date: Wed, 25 May 2011 21:17:07 +0000 (+0000)
Subject: Fix for class 10 SD cards (set DTO to 14)
X-Git-Url: https://vcs.maemo.org/git/?p=kernel-bfs;a=commitdiff_plain;h=05afd6382dcee28e3090d0374d41beeee394b20e

Fix for class 10 SD cards (set DTO to 14)
---

diff --git a/kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff b/kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff
new file mode 100644
index 0000000..45b8f25
--- /dev/null
+++ b/kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff
@@ -0,0 +1,38 @@
+--- kernel-2.6.28/drivers/mmc/host/omap_hsmmc.c	2011-04-28 23:06:37.000000000 +0200
++++ kernel-2.6.28.new/drivers/mmc/host/omap_hsmmc.c	2011-05-05 22:18:25.174891197 +0200
+@@ -958,34 +958,9 @@ static void set_data_timeout(struct omap
+ 			     unsigned int timeout_ns,
+ 			     unsigned int timeout_clks)
+ {
+-	unsigned int timeout, cycle_ns;
+-	uint32_t reg, clkd, dto = 0;
++	uint32_t reg, dto = 14;
+ 
+ 	reg = OMAP_HSMMC_READ(host->base, SYSCTL);
+-	clkd = (reg & CLKD_MASK) >> CLKD_SHIFT;
+-	if (clkd == 0)
+-		clkd = 1;
+-
+-	cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd);
+-	timeout = timeout_ns / cycle_ns;
+-	timeout += timeout_clks;
+-	if (timeout) {
+-		while ((timeout & 0x80000000) == 0) {
+-			dto += 1;
+-			timeout <<= 1;
+-		}
+-		dto = 31 - dto;
+-		timeout <<= 1;
+-		if (timeout && dto)
+-			dto += 1;
+-		if (dto >= 13)
+-			dto -= 13;
+-		else
+-			dto = 0;
+-		if (dto > 14)
+-			dto = 14;
+-	}
+-
+ 	reg &= ~DTO_MASK;
+ 	reg |= dto << DTO_SHIFT;
+ 	OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);
diff --git a/kernel-bfs-2.6.28/debian/patches/series b/kernel-bfs-2.6.28/debian/patches/series
index b1faea9..e651c7b 100644
--- a/kernel-bfs-2.6.28/debian/patches/series
+++ b/kernel-bfs-2.6.28/debian/patches/series
@@ -62,3 +62,5 @@ patch_swap_notify_core_support_2.6.28.diff
 reiser4-for-2.6.28.patch
 reiser4-2.6.28.1-fix.patch
 ext4.diff
+class10sd_dto14_fix.diff
+