diff options
Diffstat (limited to 'recipes/linux/linux/acern30/n30-apm.patch')
| -rw-r--r-- | recipes/linux/linux/acern30/n30-apm.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/recipes/linux/linux/acern30/n30-apm.patch b/recipes/linux/linux/acern30/n30-apm.patch new file mode 100644 index 0000000000..00b34c9a46 --- /dev/null +++ b/recipes/linux/linux/acern30/n30-apm.patch @@ -0,0 +1,73 @@ +Implement a apm_get_power_status handler for the n30. The handler +gets the battery charge from the msp430 chip using i2c and sets the ac +line information based on GPG1 (charger power) and GPC7 (usb power). + +Index: linux-2.6.14/arch/arm/mach-s3c2410/mach-n30.c +=================================================================== +--- linux-2.6.14.orig/arch/arm/mach-s3c2410/mach-n30.c ++++ linux-2.6.14/arch/arm/mach-s3c2410/mach-n30.c +@@ -31,6 +31,7 @@ + #include <linux/delay.h> + #include <linux/device.h> + #include <linux/kthread.h> ++#include <linux/i2c.h> + + #include <linux/mmc/protocol.h> + #include <linux/mtd/mtd.h> +@@ -44,6 +45,7 @@ + #include <asm/hardware/iomd.h> + #include <asm/io.h> + #include <asm/irq.h> ++#include <asm/apm.h> + #include <asm/mach-types.h> + + #include <asm/arch/regs-serial.h> +@@ -527,6 +529,37 @@ static int n30_usbstart_thread(void *unu + return 0; + } + ++#ifdef CONFIG_APM ++static void n30_get_power_status(struct apm_power_info *info) ++{ ++#ifdef CONFIG_I2C_S3C2410 ++ u8 charge; ++ struct i2c_adapter *adap; ++ struct i2c_msg msg[] = { ++ { .addr = 0x0b, .flags = I2C_M_RD, .buf = &charge, .len = 1 } ++ }; ++ ++ if ((adap = i2c_get_adapter(0)) != NULL) { ++ if (i2c_transfer(adap, msg, 1) == 1) ++ info->battery_life = charge; ++ i2c_put_adapter(adap); ++ } ++#endif ++ ++ if (s3c2410_gpio_getpin(S3C2410_GPC7)) ++ info->ac_line_status = 0x01; /* on charger power */ ++ else if (s3c2410_gpio_getpin(S3C2410_GPG1)) ++ info->ac_line_status = 0x02; /* on USB power */ ++ else ++ info->ac_line_status = 0x00; /* on battery power */ ++ ++ /* TODO I could put some values in these variables based on ++ * the battery life and the ac_line_status. --wingel */ ++ info->battery_status = 0xff; ++ info->battery_flag = 0xff; ++} ++#endif ++ + static void __init n30_init(void) + { + s3c24xx_fb_set_platdata(&n30_lcdcfg); +@@ -550,6 +583,10 @@ static void __init n30_init(void) + s3c2410_gpio_setpin(S3C2410_GPC5, 1); + + kthread_run(n30_usbstart_thread, NULL, "n30_usbstart"); ++ ++#ifdef CONFIG_APM ++ apm_get_power_status = n30_get_power_status; ++#endif + } + + MACHINE_START(N30, "Acer-N30") |