diff options
Diffstat (limited to 'recipes/linux/openzaurus-pxa27x-2.4.20-rmk2-embedix20050602/P02-C3000-voltage_050221.patch')
| -rw-r--r-- | recipes/linux/openzaurus-pxa27x-2.4.20-rmk2-embedix20050602/P02-C3000-voltage_050221.patch | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/recipes/linux/openzaurus-pxa27x-2.4.20-rmk2-embedix20050602/P02-C3000-voltage_050221.patch b/recipes/linux/openzaurus-pxa27x-2.4.20-rmk2-embedix20050602/P02-C3000-voltage_050221.patch new file mode 100644 index 0000000000..1663304aae --- /dev/null +++ b/recipes/linux/openzaurus-pxa27x-2.4.20-rmk2-embedix20050602/P02-C3000-voltage_050221.patch @@ -0,0 +1,179 @@ +diff -Nur c3000_pre/linux/arch/arm/config.in c3000_work/linux/arch/arm/config.in +--- c3000_pre/linux/arch/arm/config.in 2005-02-21 21:41:40.000000000 +0900 ++++ c3000_work/linux/arch/arm/config.in 2005-02-21 22:25:37.000000000 +0900 +@@ -478,6 +478,9 @@ + if [ "$CONFIG_ARCH_PXA_SPITZ" = "y" ]; then + bool 'Use clock change(cccr_change) enable (EXPERIMENTAL)' CONFIG_SL_CCCR_CHANGE + fi ++ if [ "$CONFIG_SL_CCCR_CHANGE" = "y" ]; then ++ bool 'Core voltage change enable (EXPERIMENTAL)' CONFIG_CHANGE_CORE_VOLT ++ fi + if [ "$CONFIG_ARCH_SHARP_SL" = "y" ]; then + define_bool CONFIG_BATT y + fi +diff -Nur c3000_pre/linux/arch/arm/mach-pxa/pxa27x_power.c c3000_work/linux/arch/arm/mach-pxa/pxa27x_power.c +--- c3000_pre/linux/arch/arm/mach-pxa/pxa27x_power.c 2004-11-04 14:13:54.000000000 +0900 ++++ c3000_work/linux/arch/arm/mach-pxa/pxa27x_power.c 2005-02-21 22:25:37.000000000 +0900 +@@ -150,6 +150,10 @@ + extern int sharpsl_main_bk_flag; + int sharpsl_request_off = 0; + ++#if defined(CONFIG_CHANGE_CORE_VOLT) ++static unsigned char current_core_voltage = 0x1a; ++#endif ++ + void PrintParamTable(void); + + int sharpsl_restart(void) +@@ -324,7 +328,7 @@ + return -1; + } + +-#ifdef DEBUG ++#if defined(DEBUG) || defined(CONFIG_CHANGE_CORE_VOLT) + int pwr_i2c_read( unsigned char device, unsigned char *value ) + { + unsigned long r; +@@ -405,12 +409,33 @@ + static void cpu_xscale_voltage_high(void) + { + pwr_i2c_open(); ++#if defined(CONFIG_CHANGE_CORE_VOLT) ++ pwr_i2c_write( 0x0c, current_core_voltage ); ++ pwr_i2c_close(); ++ printk("current voltage %x\n", current_core_voltage ); ++#else + pwr_i2c_write( 0x0c, 0x1a ); // 1.35V - SlewRate 1 + pwr_i2c_close(); ++#endif ++} ++ ++#if defined(CONFIG_CHANGE_CORE_VOLT) ++void cpu_xscale_voltage_write(unsigned char value) ++{ ++ if (value > 0x10 ) ++ return; ++ value += 0x10; ++ pwr_i2c_open(); ++ pwr_i2c_write( 0x0c, value ); ++ pwr_i2c_close(); ++ current_core_voltage = value; ++ printk("current voltage %x\n", current_core_voltage ); ++ + } ++#endif + +-#ifdef DEBUG +-static unsigned char cpu_xscale_voltage_read(void) ++#if defined(DEBUG) || defined(CONFIG_CHANGE_CORE_VOLT) ++unsigned char cpu_xscale_voltage_read(void) + { + unsigned char value=0xff; + pwr_i2c_open(); +@@ -418,7 +443,9 @@ + pwr_i2c_close(); + return value; + } ++#endif + ++#if defined(DEBUG) + #define CLKCFG(a) asm("mrc p14, 0, %0, C6, C0, 0" : "=r"(a)) + static void __debug_printk(void) + { +diff -Nur c3000_pre/linux/arch/arm/mach-pxa/sharpsl_apm.c c3000_work/linux/arch/arm/mach-pxa/sharpsl_apm.c +--- c3000_pre/linux/arch/arm/mach-pxa/sharpsl_apm.c 2005-02-21 21:44:13.000000000 +0900 ++++ c3000_work/linux/arch/arm/mach-pxa/sharpsl_apm.c 2005-02-21 22:29:17.000000000 +0900 +@@ -135,6 +135,11 @@ + struct proc_dir_entry *proc_zaurus; + #endif + ++#if defined(CONFIG_CHANGE_CORE_VOLT) ++extern unsigned char cpu_xscale_voltage_read(void); ++extern void cpu_xscale_voltage_write(unsigned char); ++#endif ++ + #if defined(CONFIG_SABINAL_DISCOVERY) + #define SHARPSL_AC_LINE_STATUS (( ASIC3_GPIO_PSTS_D & AC_IN )? APM_AC_OFFLINE : APM_AC_ONLINE) + #define BACKPACK_IN_DETECT() ( ASIC3_GPIO_PSTS_D & BACKPACK_DETECT ) /* 0: exist , 1: not in */ +@@ -1036,6 +1041,58 @@ + EXPORT_SYMBOL(write_cccr); + #endif + ++#if defined(CONFIG_CHANGE_CORE_VOLT) ++ ++void write_vcore(int vcore) ++{ ++ printk("Change Core voltage = %x.\n", vcore); ++ cpu_xscale_voltage_write(vcore); ++ return; ++} ++ ++int read_vcore(void) ++{ ++ return cpu_xscale_voltage_read(); ++} ++ ++static ssize_t core_volt_read_params(struct file *file, char *buf, ++ size_t nbytes, loff_t *ppos) ++{ ++ char outputbuf[32]; ++ int count; ++ ++ if (*ppos>0) /* Assume reading completed in previous read*/ ++ return 0; ++ count = sprintf(outputbuf, "0x%02X\n", (unsigned int) cpu_xscale_voltage_read() ); ++ count++; ++ *ppos += count; ++ if (count>nbytes)/* Assume output can be read at one time */ ++ return -EINVAL; ++ if (copy_to_user(buf, outputbuf, count+1)) ++ return -EFAULT; ++ return count; ++} ++ ++static ssize_t core_volt_write_params(struct file *file, const char *buf, ++ size_t nbytes, loff_t *ppos) ++{ ++ unsigned int param=0; ++ ++ sscanf(buf,"%x",¶m); ++ if (param) { ++ write_vcore(param); ++ } ++ return nbytes; ++} ++ ++static struct file_operations proc_core_volt_params_operations = { ++ read:core_volt_read_params, ++ write:core_volt_write_params, ++}; ++EXPORT_SYMBOL(read_vcore); ++EXPORT_SYMBOL(write_vcore); ++#endif ++ + #ifdef CONFIG_APM_CPU_IDLE + #ifdef SHARPSL_NEW_IDLE + static int save_icmr; +@@ -2849,6 +2906,7 @@ + struct proc_dir_entry *lock_fcs_proc; + struct proc_dir_entry *power_mode_proc; + struct proc_dir_entry *cccr_change_proc; ++ struct proc_dir_entry *core_volt_proc; + + apm_info.bios = apm_bios_info; + if (apm_info.bios.version == 0) { +@@ -2981,6 +3039,14 @@ + cccr_change_proc->proc_fops = &proc_cccr_change_params_operations; + } + #endif ++ ++#if defined(CONFIG_CHANGE_CORE_VOLT) ++ core_volt_proc = create_proc_entry("zaurus/VCORE", 0, NULL); ++ if (core_volt_proc) { ++ core_volt_proc->proc_fops = &proc_core_volt_params_operations; ++ } ++#endif ++ + kernel_thread(apm_thread, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND | SIGCHLD); + + #if defined(CONFIG_SABINAL_DISCOVERY) || defined(CONFIG_ARCH_PXA_TOSA) |