From ff55a9cebab02403f942121e2f898bb06ecfffbb Mon Sep 17 00:00:00 2001 From: Len Brown Date: Sat, 2 Jun 2007 00:15:25 -0400 Subject: ACPI: Lindent processor throttling code Signed-off-by: Len Brown --- drivers/acpi/processor_throttling.c | 140 +++++++++++++++++++----------------- 1 file changed, 75 insertions(+), 65 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 1bae2e42a7c..3a2e9a60187 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -44,18 +44,18 @@ #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_throttling"); -static int acpi_processor_get_throttling (struct acpi_processor *pr); -int acpi_processor_set_throttling (struct acpi_processor *pr, int state); +static int acpi_processor_get_throttling(struct acpi_processor *pr); +int acpi_processor_set_throttling(struct acpi_processor *pr, int state); static int acpi_processor_get_platform_limit(struct acpi_processor *pr) { acpi_status status = 0; unsigned long tpc = 0; - if(!pr) + if (!pr) return -EINVAL; status = acpi_evaluate_integer(pr->handle, "_TPC", NULL, &tpc); - if(ACPI_FAILURE(status) && status != AE_NOT_FOUND){ + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { ACPI_EXCEPTION((AE_INFO, status, "Evaluating _TPC")); return -ENODEV; } @@ -102,7 +102,8 @@ static int acpi_processor_get_throttling_control(struct acpi_processor *pr) if ((obj.type != ACPI_TYPE_BUFFER) || (obj.buffer.length < sizeof(struct acpi_ptc_register)) || (obj.buffer.pointer == NULL)) { - printk(KERN_ERR PREFIX "Invalid _PTC data (control_register)\n"); + printk(KERN_ERR PREFIX + "Invalid _PTC data (control_register)\n"); result = -EFAULT; goto end; } @@ -124,9 +125,9 @@ static int acpi_processor_get_throttling_control(struct acpi_processor *pr) } memcpy(&pr->throttling.status_register, obj.buffer.pointer, - sizeof(struct acpi_ptc_register)); + sizeof(struct acpi_ptc_register)); - end: + end: kfree(buffer.pointer); return result; @@ -168,7 +169,9 @@ static int acpi_processor_get_throttling_states(struct acpi_processor *pr) for (i = 0; i < pr->throttling.state_count; i++) { - struct acpi_processor_tx_tss *tx = (struct acpi_processor_tx_tss *) &(pr->throttling.states_tss[i]); + struct acpi_processor_tx_tss *tx = + (struct acpi_processor_tx_tss *)&(pr->throttling. + states_tss[i]); state.length = sizeof(struct acpi_processor_tx_tss); state.pointer = tx; @@ -186,7 +189,7 @@ static int acpi_processor_get_throttling_states(struct acpi_processor *pr) if (!tx->freqpercentage) { printk(KERN_ERR PREFIX - "Invalid _TSS data: freq is zero\n"); + "Invalid _TSS data: freq is zero\n"); result = -EFAULT; kfree(pr->throttling.states_tss); goto end; @@ -198,14 +201,14 @@ static int acpi_processor_get_throttling_states(struct acpi_processor *pr) return result; } -static int acpi_processor_get_tsd(struct acpi_processor *pr) +static int acpi_processor_get_tsd(struct acpi_processor *pr) { int result = 0; acpi_status status = AE_OK; - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; - struct acpi_buffer format = {sizeof("NNNNN"), "NNNNN"}; - struct acpi_buffer state = {0, NULL}; - union acpi_object *tsd = NULL; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_buffer format = { sizeof("NNNNN"), "NNNNN" }; + struct acpi_buffer state = { 0, NULL }; + union acpi_object *tsd = NULL; struct acpi_tsd_package *pdomain; status = acpi_evaluate_object(pr->handle, "_TSD", NULL, &buffer); @@ -232,7 +235,7 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr) state.pointer = pdomain; status = acpi_extract_package(&(tsd->package.elements[0]), - &format, &state); + &format, &state); if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n")); result = -EFAULT; @@ -251,7 +254,7 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr) goto end; } -end: + end: kfree(buffer.pointer); return result; } @@ -266,7 +269,6 @@ static int acpi_processor_get_throttling_fadt(struct acpi_processor *pr) u32 duty_mask = 0; u32 duty_value = 0; - if (!pr) return -EINVAL; @@ -306,65 +308,75 @@ static int acpi_processor_get_throttling_fadt(struct acpi_processor *pr) return 0; } -static int acpi_read_throttling_status(struct acpi_processor_throttling *throttling) +static int acpi_read_throttling_status(struct acpi_processor_throttling + *throttling) { int value = -1; switch (throttling->status_register.space_id) { case ACPI_ADR_SPACE_SYSTEM_IO: - acpi_os_read_port((acpi_io_address)throttling->status_register.address, - &value, - (u32)throttling->status_register.bit_width*8); + acpi_os_read_port((acpi_io_address) throttling->status_register. + address, &value, + (u32) throttling->status_register.bit_width * + 8); break; case ACPI_ADR_SPACE_FIXED_HARDWARE: - printk(KERN_ERR PREFIX "HARDWARE addr space,NOT supported yet\n"); + printk(KERN_ERR PREFIX + "HARDWARE addr space,NOT supported yet\n"); break; default: printk(KERN_ERR PREFIX "Unknown addr space %d\n", - (u32) (throttling->status_register.space_id)); + (u32) (throttling->status_register.space_id)); } return value; } -static int acpi_write_throttling_state(struct acpi_processor_throttling *throttling,int value) +static int acpi_write_throttling_state(struct acpi_processor_throttling + *throttling, int value) { int ret = -1; switch (throttling->control_register.space_id) { case ACPI_ADR_SPACE_SYSTEM_IO: - acpi_os_write_port((acpi_io_address)throttling->control_register.address, - value, - (u32)throttling->control_register.bit_width*8); + acpi_os_write_port((acpi_io_address) throttling-> + control_register.address, value, + (u32) throttling->control_register. + bit_width * 8); ret = 0; break; case ACPI_ADR_SPACE_FIXED_HARDWARE: - printk(KERN_ERR PREFIX "HARDWARE addr space,NOT supported yet\n"); + printk(KERN_ERR PREFIX + "HARDWARE addr space,NOT supported yet\n"); break; default: printk(KERN_ERR PREFIX "Unknown addr space %d\n", - (u32) (throttling->control_register.space_id)); + (u32) (throttling->control_register.space_id)); } return ret; } -static int acpi_get_throttling_state(struct acpi_processor *pr,int value) +static int acpi_get_throttling_state(struct acpi_processor *pr, int value) { int i; for (i = 0; i < pr->throttling.state_count; i++) { - struct acpi_processor_tx_tss *tx = (struct acpi_processor_tx_tss *) &(pr->throttling.states_tss[i]); - if(tx->control == value) + struct acpi_processor_tx_tss *tx = + (struct acpi_processor_tx_tss *)&(pr->throttling. + states_tss[i]); + if (tx->control == value) break; } - if(i > pr->throttling.state_count) - i=-1; + if (i > pr->throttling.state_count) + i = -1; return i; } -static int acpi_get_throttling_value(struct acpi_processor *pr,int state) +static int acpi_get_throttling_value(struct acpi_processor *pr, int state) { int value = -1; - if(state >=0 && state <= pr->throttling.state_count){ - struct acpi_processor_tx_tss *tx = (struct acpi_processor_tx_tss *) &(pr->throttling.states_tss[state]); + if (state >= 0 && state <= pr->throttling.state_count) { + struct acpi_processor_tx_tss *tx = + (struct acpi_processor_tx_tss *)&(pr->throttling. + states_tss[state]); value = tx->control; } return value; @@ -375,7 +387,6 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr) int state = 0; u32 value = 0; - if (!pr) return -EINVAL; @@ -385,8 +396,8 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr) pr->throttling.state = 0; local_irq_disable(); value = acpi_read_throttling_status(&pr->throttling); - if(value >= 0){ - state = acpi_get_throttling_state(pr,value); + if (value >= 0) { + state = acpi_get_throttling_state(pr, value); pr->throttling.state = state; } local_irq_enable(); @@ -394,7 +405,6 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr) return 0; } - static int acpi_processor_get_throttling(struct acpi_processor *pr) { return pr->throttling.acpi_processor_get_throttling(pr); @@ -406,7 +416,6 @@ int acpi_processor_set_throttling_fadt(struct acpi_processor *pr, int state) u32 duty_mask = 0; u32 duty_value = 0; - if (!pr) return -EINVAL; @@ -494,9 +503,9 @@ int acpi_processor_set_throttling_ptc(struct acpi_processor *pr, int state) local_irq_disable(); - value = acpi_get_throttling_value(pr,state); - if(value >=0){ - acpi_write_throttling_state(&pr->throttling,value); + value = acpi_get_throttling_value(pr, state); + if (value >= 0) { + acpi_write_throttling_state(&pr->throttling, value); pr->throttling.state = state; } local_irq_enable(); @@ -506,7 +515,7 @@ int acpi_processor_set_throttling_ptc(struct acpi_processor *pr, int state) int acpi_processor_set_throttling(struct acpi_processor *pr, int state) { - return pr->throttling.acpi_processor_set_throttling(pr,state); + return pr->throttling.acpi_processor_set_throttling(pr, state); } int acpi_processor_get_throttling_info(struct acpi_processor *pr) @@ -518,7 +527,6 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) int no_tss = 0; int no_tsd = 0; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n", pr->throttling.address, @@ -533,12 +541,16 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) no_tss = acpi_processor_get_throttling_states(pr); no_tsd = acpi_processor_get_tsd(pr); - if(no_ptc || no_tss) { - pr->throttling.acpi_processor_get_throttling = &acpi_processor_get_throttling_fadt; - pr->throttling.acpi_processor_set_throttling = &acpi_processor_set_throttling_fadt; + if (no_ptc || no_tss) { + pr->throttling.acpi_processor_get_throttling = + &acpi_processor_get_throttling_fadt; + pr->throttling.acpi_processor_set_throttling = + &acpi_processor_set_throttling_fadt; } else { - pr->throttling.acpi_processor_get_throttling = &acpi_processor_get_throttling_ptc; - pr->throttling.acpi_processor_set_throttling = &acpi_processor_set_throttling_ptc; + pr->throttling.acpi_processor_get_throttling = + &acpi_processor_get_throttling_ptc; + pr->throttling.acpi_processor_set_throttling = + &acpi_processor_set_throttling_ptc; } if (!pr->throttling.address) { @@ -620,7 +632,6 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq, int i = 0; int result = 0; - if (!pr) goto end; @@ -639,24 +650,24 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq, seq_printf(seq, "state count: %d\n" "active state: T%d\n" - "state available: T%d to T%d\n", + "state available: T%d to T%d\n", pr->throttling.state_count, pr->throttling.state, - pr->throttling_platform_limit, - pr->throttling.state_count-1); + pr->throttling_platform_limit, + pr->throttling.state_count - 1); seq_puts(seq, "states:\n"); - if(acpi_processor_get_throttling == acpi_processor_get_throttling_fadt) + if (acpi_processor_get_throttling == acpi_processor_get_throttling_fadt) for (i = 0; i < pr->throttling.state_count; i++) seq_printf(seq, " %cT%d: %02d%%\n", - (i == pr->throttling.state ? '*' : ' '), i, - (pr->throttling.states[i].performance ? pr-> - throttling.states[i].performance / 10 : 0)); + (i == pr->throttling.state ? '*' : ' '), i, + (pr->throttling.states[i].performance ? pr-> + throttling.states[i].performance / 10 : 0)); else for (i = 0; i < pr->throttling.state_count; i++) seq_printf(seq, " %cT%d: %02d%%\n", - (i == pr->throttling.state ? '*' : ' '), i, - (int)pr->throttling.states_tss[i].freqpercentage); - + (i == pr->throttling.state ? '*' : ' '), i, + (int)pr->throttling.states_tss[i]. + freqpercentage); end: return 0; @@ -669,7 +680,7 @@ static int acpi_processor_throttling_open_fs(struct inode *inode, PDE(inode)->data); } -static ssize_t acpi_processor_write_throttling(struct file * file, +static ssize_t acpi_processor_write_throttling(struct file *file, const char __user * buffer, size_t count, loff_t * data) { @@ -678,7 +689,6 @@ static ssize_t acpi_processor_write_throttling(struct file * file, struct acpi_processor *pr = m->private; char state_string[12] = { '\0' }; - if (!pr || (count > sizeof(state_string) - 1)) return -EINVAL; -- cgit v1.2.3-70-g09d2