diff options
Diffstat (limited to 'target/linux/ep93xx/patches-2.6.30/003-ep93xx-i2c.patch')
| -rw-r--r-- | target/linux/ep93xx/patches-2.6.30/003-ep93xx-i2c.patch | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/target/linux/ep93xx/patches-2.6.30/003-ep93xx-i2c.patch b/target/linux/ep93xx/patches-2.6.30/003-ep93xx-i2c.patch deleted file mode 100644 index aaf4d3ca8e..0000000000 --- a/target/linux/ep93xx/patches-2.6.30/003-ep93xx-i2c.patch +++ /dev/null @@ -1,225 +0,0 @@ -Index: linux-2.6.30.9/drivers/i2c/busses/Kconfig -=================================================================== ---- linux-2.6.30.9.orig/drivers/i2c/busses/Kconfig 2009-11-24 21:00:21.000000000 +0100 -+++ linux-2.6.30.9/drivers/i2c/busses/Kconfig 2009-11-24 21:00:23.000000000 +0100 -@@ -326,6 +326,10 @@ - devices such as DaVinci NIC. - For details please see http://www.ti.com/davinci - -+config I2C_EP93XX -+ tristate "EP93XX I2C" -+ depends on I2C && ARCH_EP93XX -+ - config I2C_GPIO - tristate "GPIO-based bitbanging I2C" - depends on GENERIC_GPIO -Index: linux-2.6.30.9/drivers/i2c/busses/Makefile -=================================================================== ---- linux-2.6.30.9.orig/drivers/i2c/busses/Makefile 2009-11-24 21:00:21.000000000 +0100 -+++ linux-2.6.30.9/drivers/i2c/busses/Makefile 2009-11-24 21:00:23.000000000 +0100 -@@ -30,6 +30,7 @@ - obj-$(CONFIG_I2C_BLACKFIN_TWI) += i2c-bfin-twi.o - obj-$(CONFIG_I2C_CPM) += i2c-cpm.o - obj-$(CONFIG_I2C_DAVINCI) += i2c-davinci.o -+obj-$(CONFIG_I2C_EP93XX) += i2c-ep93xx.o - obj-$(CONFIG_I2C_GPIO) += i2c-gpio.o - obj-$(CONFIG_I2C_HIGHLANDER) += i2c-highlander.o - obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o -Index: linux-2.6.30.9/drivers/i2c/busses/i2c-ep93xx.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.30.9/drivers/i2c/busses/i2c-ep93xx.c 2009-11-24 21:00:38.000000000 +0100 -@@ -0,0 +1,193 @@ -+/* ------------------------------------------------------------------------ * -+ * i2c-ep933xx.c I2C bus glue for Cirrus EP93xx * -+ * ------------------------------------------------------------------------ * -+ -+ Copyright (C) 2004 Michael Burian -+ -+ Based on i2c-parport-light.c -+ Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org> -+ -+ 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., 675 Mass Ave, Cambridge, MA 02139, USA. -+ * ------------------------------------------------------------------------ */ -+ -+ -+//#include <linux/config.h> -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/ioport.h> -+#include <linux/delay.h> -+#include <linux/i2c.h> -+#include <linux/i2c-algo-bit.h> -+#include <asm/io.h> -+#include <mach/hardware.h> -+ -+//1/(2*clockfrequency) -+#define EE_DELAY_USEC 50 -+#define GPIOG_EECLK 1 -+#define GPIOG_EEDAT 2 -+ -+/* ----- I2C algorithm call-back functions and structures ----------------- */ -+ -+// TODO: optimize -+static void ep93xx_setscl(void *data, int state) -+{ -+ unsigned int uiPGDR, uiPGDDR; -+ -+ uiPGDR = inl(GPIO_PGDR); -+ uiPGDDR = inl(GPIO_PGDDR); -+ -+ /* Configure the clock line as output. */ -+ uiPGDDR |= GPIOG_EECLK; -+ outl(uiPGDDR, GPIO_PGDDR); -+ -+ /* Set clock line to state */ -+ if(state) -+ uiPGDR |= GPIOG_EECLK; -+ else -+ uiPGDR &= ~GPIOG_EECLK; -+ -+ outl(uiPGDR, GPIO_PGDR); -+} -+ -+static void ep93xx_setsda(void *data, int state) -+{ -+ unsigned int uiPGDR, uiPGDDR; -+ -+ uiPGDR = inl(GPIO_PGDR); -+ uiPGDDR = inl(GPIO_PGDDR); -+ -+ /* Configure the data line as output. */ -+ uiPGDDR |= GPIOG_EEDAT; -+ outl(uiPGDDR, GPIO_PGDDR); -+ -+ /* Set data line to state */ -+ if(state) -+ uiPGDR |= GPIOG_EEDAT; -+ else -+ uiPGDR &= ~GPIOG_EEDAT; -+ -+ outl(uiPGDR, GPIO_PGDR); -+} -+ -+static int ep93xx_getscl(void *data) -+{ -+ unsigned int uiPGDR, uiPGDDR; -+ -+ uiPGDR = inl(GPIO_PGDR); -+ uiPGDDR = inl(GPIO_PGDDR); -+ -+ /* Configure the clock line as input */ -+ uiPGDDR &= ~GPIOG_EECLK; -+ outl(uiPGDDR, GPIO_PGDDR); -+ -+ /* Return state of the clock line */ -+ return (inl(GPIO_PGDR) & GPIOG_EECLK) ? 1 : 0; -+} -+ -+static int ep93xx_getsda(void *data) -+{ -+ unsigned int uiPGDR, uiPGDDR; -+ uiPGDR = inl(GPIO_PGDR); -+ uiPGDDR = inl(GPIO_PGDDR); -+ -+ /* Configure the data line as input */ -+ uiPGDDR &= ~GPIOG_EEDAT; -+ outl(uiPGDDR, GPIO_PGDDR); -+ -+ /* Return state of the data line */ -+ return (inl(GPIO_PGDR) & GPIOG_EEDAT) ? 1 : 0; -+} -+ -+/* ------------------------------------------------------------------------ -+ * Encapsulate the above functions in the correct operations structure. -+ * This is only done when more than one hardware adapter is supported. -+ */ -+ -+/* last line (us, ms, timeout) -+ * us dominates the bit rate: 10us means: 100Kbit/sec(25 means 40kbps) -+ * 10ms not known -+ * 100ms timeout -+ */ -+static struct i2c_algo_bit_data ep93xx_data = { -+ .setsda = ep93xx_setsda, -+ .setscl = ep93xx_setscl, -+ .getsda = ep93xx_getsda, -+ .getscl = ep93xx_getscl, -+ .udelay = 10, -+ //.mdelay = 10, -+ .timeout = HZ, -+}; -+ -+/* ----- I2c structure ---------------------------------------------------- */ -+static struct i2c_adapter ep93xx_adapter = { -+ .owner = THIS_MODULE, -+ .class = I2C_CLASS_HWMON, -+ .algo_data = &ep93xx_data, -+ .name = "EP93XX I2C bit-bang interface", -+}; -+ -+/* ----- Module loading, unloading and information ------------------------ */ -+ -+static int __init i2c_ep93xx_init(void) -+{ -+ unsigned long uiPGDR, uiPGDDR; -+ -+ /* Read the current value of the GPIO data and data direction registers. */ -+ uiPGDR = inl(GPIO_PGDR); -+ uiPGDDR = inl(GPIO_PGDDR); -+ -+ /* If the GPIO pins have not been configured since reset, the data -+ * and clock lines will be set as inputs and with data value of 0. -+ * External pullup resisters are pulling them high. -+ * Set them both high before configuring them as outputs. */ -+ uiPGDR |= (GPIOG_EEDAT | GPIOG_EECLK); -+ outl(uiPGDR, GPIO_PGDR); -+ -+ /* Delay to meet the EE Interface timing specification. */ -+ udelay(EE_DELAY_USEC); -+ -+ -+ /* Configure the EE data and clock lines as outputs. */ -+ uiPGDDR |= (GPIOG_EEDAT | GPIOG_EECLK); -+ outl(uiPGDDR, GPIO_PGDDR); -+ -+ /* Delay to meet the EE Interface timing specification. */ -+ udelay(EE_DELAY_USEC); -+ -+ /* Reset hardware to a sane state (SCL and SDA high) */ -+ ep93xx_setsda(NULL, 1); -+ ep93xx_setscl(NULL, 1); -+ -+ if (i2c_bit_add_bus(&ep93xx_adapter) > 0) { -+ printk(KERN_ERR "i2c-ep93xx: Unable to register with I2C\n"); -+ return -ENODEV; -+ } -+ -+ return 0; -+} -+ -+static void __exit i2c_ep93xx_exit(void) -+{ -+ //i2c_bit_del_bus(&ep93xx_adapter); -+ i2c_del_adapter(&ep93xx_adapter); -+} -+ -+MODULE_AUTHOR("Michael Burian"); -+MODULE_DESCRIPTION("I2C bus glue for Cirrus EP93xx processors"); -+MODULE_LICENSE("GPL"); -+ -+module_init(i2c_ep93xx_init); -+module_exit(i2c_ep93xx_exit); |