From ddf83a2fcef1a670c45fc585119dcc1fe062c4a9 Mon Sep 17 00:00:00 2001 From: Markus Klotzbuecher Date: Tue, 30 May 2006 16:56:14 +0200 Subject: Support generic OHCI support for the s3c24x0 cpu. --- cpu/arm920t/s3c24x0/usb.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 cpu/arm920t/s3c24x0/usb.c (limited to 'cpu/arm920t/s3c24x0/usb.c') diff --git a/cpu/arm920t/s3c24x0/usb.c b/cpu/arm920t/s3c24x0/usb.c new file mode 100644 index 0000000..8114034 --- /dev/null +++ b/cpu/arm920t/s3c24x0/usb.c @@ -0,0 +1,72 @@ +/* + * (C) Copyright 2006 + * DENX Software Engineering + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include + +#if defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) +# if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) + +#if defined(CONFIG_S3C2400) +# include +#elif defined(CONFIG_S3C2410) +# include +#endif + +int usb_cpu_init() +{ + + S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); + S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO(); + + /* + * Set the 48 MHz UPLL clocking. Values are taken from + * "PLL value selection guide", 6-23, s3c2400_UM.pdf. + */ + clk_power->UPLLCON = ((40 << 12) + (1 << 4) + 2); + gpio->MISCCR |= 0x8; /* 1 = use pads related USB for USB host */ + + /* + * Enable USB host clock. + */ + clk_power->CLKCON |= (1 << 4); + + return 0; +} + +int usb_cpu_stop() +{ + S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); + /* may not want to do this */ + clk_power->CLKCON &= ~(1 << 4); + return 0; +} + +int usb_cpu_init_fail() +{ + S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); + clk_power->CLKCON &= ~(1 << 4); + return 0; +} + +# endif /* defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) */ +#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */ -- cgit v1.1 From 99d70e3a47affb9bae041a2caece7cd516e213b3 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Mon, 26 Jun 2006 11:06:00 +0200 Subject: More code cleanup --- cpu/arm920t/s3c24x0/usb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'cpu/arm920t/s3c24x0/usb.c') diff --git a/cpu/arm920t/s3c24x0/usb.c b/cpu/arm920t/s3c24x0/usb.c index 8114034..4bc7961 100644 --- a/cpu/arm920t/s3c24x0/usb.c +++ b/cpu/arm920t/s3c24x0/usb.c @@ -32,7 +32,7 @@ # include #endif -int usb_cpu_init() +int usb_cpu_init (void) { S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); @@ -53,7 +53,7 @@ int usb_cpu_init() return 0; } -int usb_cpu_stop() +int usb_cpu_stop (void) { S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); /* may not want to do this */ @@ -61,7 +61,7 @@ int usb_cpu_stop() return 0; } -int usb_cpu_init_fail() +int usb_cpu_init_fail (void) { S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); clk_power->CLKCON &= ~(1 << 4); -- cgit v1.1 From 7b59b3c7a8ce2e4b567abf99c1cd667bf35b9418 Mon Sep 17 00:00:00 2001 From: Markus Klotzbuecher Date: Mon, 27 Nov 2006 11:44:58 +0100 Subject: Introduced the configuration option CONFIG_USB_OHCI_NEW in order to be able to choose between the old and the generic OHCI drivers. --- cpu/arm920t/s3c24x0/usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'cpu/arm920t/s3c24x0/usb.c') diff --git a/cpu/arm920t/s3c24x0/usb.c b/cpu/arm920t/s3c24x0/usb.c index 4bc7961..ef5d5bf 100644 --- a/cpu/arm920t/s3c24x0/usb.c +++ b/cpu/arm920t/s3c24x0/usb.c @@ -23,7 +23,7 @@ #include -#if defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) +#if defined(CONFIG_USB_OHCI_NEW) && defined(CFG_USB_OHCI_CPU_INIT) # if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) #if defined(CONFIG_S3C2400) -- cgit v1.1