Hello Naveen,
Am 06.12.2013 06:47, schrieb Naveen Krishna Ch:
Hello Heiko,
On 5 December 2013 18:17, Heiko Schocher<h...@denx.de> wrote:
Hello Naveen,
Am 05.12.2013 13:21, schrieb Naveen Krishna Ch:
Hello Heiko,
On 5 December 2013 16:56, Heiko Schocher<h...@denx.de> wrote:
Hello Naveen,
Sorry for the late reply ...
Am 25.11.2013 12:28, schrieb Naveen Krishna Ch:
This patch adds the U_BOOT_I2C_ADAP_COMPLETE defines for channels
on Exynos5420 and Exynos5250 and also adds support for init function
for hsi2c channels
Signed-off-by: Naveen Krishna Chatradhi<ch.nav...@samsung.com>
---
README | 6 ++
drivers/i2c/s3c24x0_i2c.c | 222
+++++++++++++++++++++++++++++++++++----------
2 files changed, 180 insertions(+), 48 deletions(-)
diff --git a/README b/README
index c97ff0a..c04e352 100644
--- a/README
+++ b/README
@@ -2076,6 +2076,12 @@ CBFS (Coreboot Filesystem) support
- set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting
- set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr
+ - drivers/i2c/s3c24x0_i2c.c:
+ - activate this driver with CONFIG_SYS_I2C_S3C24X0
+ - This driver adds i2c buses (11 for Exynos5250,
Exynos5420
+ 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from
Samsung)
+ with a fix speed from 100000 and the slave addr 0!
+
additional defines:
CONFIG_SYS_NUM_I2C_BUSES
diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c
index 1e9dba0..6e719ec 100644
--- a/drivers/i2c/s3c24x0_i2c.c
+++ b/drivers/i2c/s3c24x0_i2c.c
@@ -721,6 +721,15 @@ static unsigned int
s3c24x0_i2c_set_bus_speed(struct
i2c_adapter *adap,
return 0;
}
+static void exynos_i2c_init(struct i2c_adapter *adap, int speed, int
slaveaddr)
+{
+ /* This will override the speed selected in the fdt for that
port
*/
+ debug("i2c_init(speed=%u, slaveaddr=0x%x)\n", speed, slaveaddr);
+ if (i2c_set_bus_speed(speed))
+ printf("i2c_init: failed to init bus %d for speed =
%d\n",
+ adap->hwadapnr, speed);
+}
This init is not used for Exynos4 and lower series SoCs
+
/*
* cmd_type is 0 for write, 1 for read.
*
@@ -1071,51 +1080,168 @@ int i2c_reset_port_fdt(const void *blob, int
node)
/*
* Register s3c24x0 i2c adapters
*/
-U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_0, s3c24x0_i2c_init,
s3c24x0_i2c_probe,
[...]
+U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 8
Is missing the closing braces. My local changes has it so i couldnt
see the problem.
Ups?
leads in a compile error for trats and trats2, could you please fix?
I ran "MAKEALL -v samsung"
s3c24x0_i2c.c:724:13: warning: 'exynos_i2c_init' defined but not used
[-Wunused-function]
is the warning seen for trats and trats2 boards
If you are talking about this one, will fix it in the next versio.
No, there is a missing ")" at the end!
pollux:u-boot hs [master] $ ./MAKEALL trats
Configuring for trats board...
s3c24x0_i2c.c:1247:0: error: unterminated argument list invoking macro
"U_BOOT_I2C_ADAP_COMPLETE"
s3c24x0_i2c.c:1236:1: error: expected '=', ',', ';', 'asm' or
'__attribute__' at end of input
arm-linux-gnueabi-size: './u-boot': No such file
s3c24x0_i2c.c:1247:0: error: unterminated argument list invoking macro
"U_BOOT_I2C_ADAP_COMPLETE"
s3c24x0_i2c.c:1236:1: error: expected '=', ',', ';', 'asm' or
'__attribute__' at end of input
s3c24x0_i2c.c:724:13: warning: 'exynos_i2c_init' defined but not used
[-Wunused-function]
make[1]: *** [s3c24x0_i2c.o] Fehler 1
make[1]: *** Warte auf noch nicht beendete Prozesse...
make: *** [drivers/i2c/built-in.o] Fehler 2
make: *** Warte auf noch nicht beendete Prozesse...
--------------------- SUMMARY ----------------------------
Boards compiled: 1
Boards with errors: 1 ( trats )
----------------------------------------------------------
#pwclient git-am 292705
#pwclient git-am 293889
#pwclient git-am 292706
#./MAKEALL trats
Shows me this errors. Thanks for the catch.
Puuh...
pollux:u-boot hs [master] $
pollux:u-boot hs [(kein Zweig, Neuaufbau begonnen bei master)] $ git bisect
log
git bisect start
# bad: [f5f40408ce3b00637c652fdabfb6f3c4e0d09635] arm: omap: i2c: don't zero
cnt in i2c_write
git bisect bad f5f40408ce3b00637c652fdabfb6f3c4e0d09635
# good: [f44483b57c49282299da0e5c10073b909cdad979] Merge branch 'serial' of
git://git.denx.de/u-boot-microblaze
git bisect good f44483b57c49282299da0e5c10073b909cdad979
# bad: [4d06a7c5707f813f4bc7fd7a9d700606c63fa4de] i2c: fti2c010: cosmetic:
coding style cleanup
git bisect bad 4d06a7c5707f813f4bc7fd7a9d700606c63fa4de
# good: [a6756bbdac43474193472b43309626e2c28d8100] driver:i2c:s3c24x0: fix
clock init for hsi2c
git bisect good a6756bbdac43474193472b43309626e2c28d8100
# bad: [c3b6bba20862ff6476c99aa6d3168f7097a5b4b2] i2c: samsung: register i2c
busses for Exynso5420 and Exynos5250
git bisect bad c3b6bba20862ff6476c99aa6d3168f7097a5b4b2
# first bad commit: [c3b6bba20862ff6476c99aa6d3168f7097a5b4b2] i2c: samsung:
register i2c busses for Exynso5420 and Exynos5250
pollux:u-boot hs [(kein Zweig, Neuaufbau begonnen bei master)] $
Hmm... could you reformat this very long list in something like this:
U_BOOT_I2C_ADAP_COMPLETE(s3c0, s3c24x0_i2c_init, s3c24x0_i2c_probe,
if defined(CONFIG_EXYNOS4) || defined(CONFIG_EXYNOS5420) ||
defined(CONFIG_EXYNOS5420)
U_BOOT_I2C_ADAP_COMPLETE(s3c1, s3c24x0_i2c_init, s3c24x0_i2c_probe,
[...]
U_BOOT_I2C_ADAP_COMPLETE(s3c8, s3c24x0_i2c_init, s3c24x0_i2c_probe,
#endif
if defined(CONFIG_EXYNOS5420) || defined(CONFIG_EXYNOS5420)
U_BOOT_I2C_ADAP_COMPLETE(s3c9, s3c24x0_i2c_init, s3c24x0_i2c_probe,
U_BOOT_I2C_ADAP_COMPLETE(s3c10, s3c24x0_i2c_init, s3c24x0_i2c_probe,
#endif
Even if we implement a common init function and reduce this list. The
speeds would
be fixed and the user need to set the speeds by calling i2c speed or
the corresponding
function.
Ok, I see... so please just sent the compileerrorfree patch, thanks!
Basically, s3c24x0_i2c.c now support both HighSpeed I2C modules and
Standard I2C
Modules. They have different init functions.
Exynos5250/5260 has 4 hsi2c channels hsi2c 0 ~ 3 and 7 i2c channels 4 ~ 10
Exynos5420 has 4 i2c channels i2c 0 ~ 3 and 7 hsi2c channels 4 ~ 10
Exynos4 has 9 i2c channels
Hence, the long list. It would be helpful if anyone can suggest a way
to reduce this list.
Ah, now I see it, thanks!
Maybe we can define one s3c24x0_i2c_init function, and call from there
the SoC / adapater specific init func? So we can prevent this long list?
I can think of something like this
+static void samsung_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
+{
+
+#ifdef CONFIG_EXYNOS5
+#ifdef CONFIG_EXYNOS5420
+ if(adap->hwadapnr> 3)
+ s3c24x0_i2c_init(adap, speed, slaveadd);
+ else
+ exynos_i2c_init(adap, speed, slaveadd);
+#elif defined(CONFIG_EXYNOS5250) || defined(CONFIG_EXYNOS5260)
+ if(adap->hwadapnr> 3)
+ exynos_i2c_init(adap, speed, slaveadd);
+ else
+ s3c24x0_i2c_init(adap, speed, slaveadd);
+#endif
+#else
+ s3c24x0_i2c_init(adap, speed, slaveadd);
+#endif
+}
But, as mentioned earlier the speeds needs to be set from a seperate function
for each board.
Is U_BOOT_I2C_ADAP_COMPLETE is the only (best) way to register to new i2c
framework ?
Yes.
Is there any work going on to simplyfy U_BOOT_I2C_ADAP_COMPLETE ?
No, what do you thinking of? Simplify patches are always welcome!
bye,
Heiko
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DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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