bbc_i2c: Convert to pure OF driver.
This thing was a mess, who wrote this junk? :) Luckily we'll soon have nice generic I2C layer drivers for this PCF based I2C stuff on sparc64. Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
David S. Miller
parent
6b8c90f24e
commit
e21e245bcd
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@ -1,15 +1,15 @@
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/* $Id: bbc_envctrl.c,v 1.4 2001/04/06 16:48:08 davem Exp $
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* bbc_envctrl.c: UltraSPARC-III environment control driver.
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/* bbc_envctrl.c: UltraSPARC-III environment control driver.
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*
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* Copyright (C) 2001 David S. Miller (davem@redhat.com)
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* Copyright (C) 2001, 2008 David S. Miller (davem@davemloft.net)
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*/
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#include <linux/kthread.h>
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#include <linux/delay.h>
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#include <linux/kmod.h>
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#include <linux/reboot.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <asm/oplib.h>
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#include <asm/ebus.h>
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#include "bbc_i2c.h"
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#include "max1617.h"
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@ -75,43 +75,8 @@ static struct temp_limits amb_temp_limits[2] = {
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{ 65, 55, 40, 5, -5, -10 },
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};
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enum fan_action { FAN_SLOWER, FAN_SAME, FAN_FASTER, FAN_FULLBLAST, FAN_STATE_MAX };
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struct bbc_cpu_temperature {
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struct bbc_cpu_temperature *next;
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struct bbc_i2c_client *client;
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int index;
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/* Current readings, and history. */
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s8 curr_cpu_temp;
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s8 curr_amb_temp;
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s8 prev_cpu_temp;
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s8 prev_amb_temp;
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s8 avg_cpu_temp;
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s8 avg_amb_temp;
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int sample_tick;
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enum fan_action fan_todo[2];
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#define FAN_AMBIENT 0
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#define FAN_CPU 1
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};
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struct bbc_cpu_temperature *all_bbc_temps;
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struct bbc_fan_control {
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struct bbc_fan_control *next;
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struct bbc_i2c_client *client;
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int index;
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int psupply_fan_on;
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int cpu_fan_speed;
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int system_fan_speed;
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};
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struct bbc_fan_control *all_bbc_fans;
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static LIST_HEAD(all_temps);
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static LIST_HEAD(all_fans);
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#define CPU_FAN_REG 0xf0
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#define SYS_FAN_REG 0xf2
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@ -330,7 +295,7 @@ static enum fan_action prioritize_fan_action(int which_fan)
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* recommend we do, and perform that action on all the
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* fans.
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*/
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for (tp = all_bbc_temps; tp; tp = tp->next) {
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list_for_each_entry(tp, &all_temps, glob_list) {
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if (tp->fan_todo[which_fan] == FAN_FULLBLAST) {
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decision = FAN_FULLBLAST;
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break;
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@ -439,7 +404,7 @@ static void fans_full_blast(void)
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/* Since we will not be monitoring things anymore, put
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* the fans on full blast.
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*/
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for (fp = all_bbc_fans; fp; fp = fp->next) {
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list_for_each_entry(fp, &all_fans, glob_list) {
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fp->cpu_fan_speed = FAN_SPEED_MAX;
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fp->system_fan_speed = FAN_SPEED_MAX;
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fp->psupply_fan_on = 1;
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@ -463,11 +428,11 @@ static int kenvctrld(void *__unused)
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if (kthread_should_stop())
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break;
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for (tp = all_bbc_temps; tp; tp = tp->next) {
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list_for_each_entry(tp, &all_temps, glob_list) {
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get_current_temps(tp);
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analyze_temps(tp, &last_warning_jiffies);
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}
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for (fp = all_bbc_fans; fp; fp = fp->next)
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list_for_each_entry(fp, &all_fans, glob_list)
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maybe_new_fan_speeds(fp);
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}
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printk(KERN_INFO "bbc_envctrl: kenvctrld exiting...\n");
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@ -477,7 +442,8 @@ static int kenvctrld(void *__unused)
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return 0;
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}
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static void attach_one_temp(struct linux_ebus_child *echild, int temp_idx)
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static void attach_one_temp(struct bbc_i2c_bus *bp, struct of_device *op,
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int temp_idx)
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{
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struct bbc_cpu_temperature *tp;
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@ -485,20 +451,17 @@ static void attach_one_temp(struct linux_ebus_child *echild, int temp_idx)
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if (!tp)
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return;
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tp->client = bbc_i2c_attach(echild);
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tp->client = bbc_i2c_attach(op);
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if (!tp->client) {
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kfree(tp);
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return;
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}
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tp->index = temp_idx;
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{
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struct bbc_cpu_temperature **tpp = &all_bbc_temps;
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while (*tpp)
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tpp = &((*tpp)->next);
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tp->next = NULL;
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*tpp = tp;
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}
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list_add(&tp->glob_list, &all_temps);
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list_add(&tp->bp_list, &bp->temps);
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/* Tell it to convert once every 5 seconds, clear all cfg
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* bits.
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@ -524,7 +487,8 @@ static void attach_one_temp(struct linux_ebus_child *echild, int temp_idx)
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tp->fan_todo[FAN_CPU] = FAN_SAME;
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}
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static void attach_one_fan(struct linux_ebus_child *echild, int fan_idx)
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static void attach_one_fan(struct bbc_i2c_bus *bp, struct of_device *op,
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int fan_idx)
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{
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struct bbc_fan_control *fp;
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@ -532,7 +496,7 @@ static void attach_one_fan(struct linux_ebus_child *echild, int fan_idx)
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if (!fp)
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return;
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fp->client = bbc_i2c_attach(echild);
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fp->client = bbc_i2c_attach(op);
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if (!fp->client) {
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kfree(fp);
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return;
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@ -540,13 +504,8 @@ static void attach_one_fan(struct linux_ebus_child *echild, int fan_idx)
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fp->index = fan_idx;
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{
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struct bbc_fan_control **fpp = &all_bbc_fans;
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while (*fpp)
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fpp = &((*fpp)->next);
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fp->next = NULL;
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*fpp = fp;
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}
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list_add(&fp->glob_list, &all_fans);
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list_add(&fp->bp_list, &bp->fans);
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/* The i2c device controlling the fans is write-only.
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* So the only way to keep track of the current power
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@ -563,18 +522,18 @@ static void attach_one_fan(struct linux_ebus_child *echild, int fan_idx)
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set_fan_speeds(fp);
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}
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int bbc_envctrl_init(void)
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int bbc_envctrl_init(struct bbc_i2c_bus *bp)
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{
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struct linux_ebus_child *echild;
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struct of_device *op;
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int temp_index = 0;
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int fan_index = 0;
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int devidx = 0;
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while ((echild = bbc_i2c_getdev(devidx++)) != NULL) {
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if (!strcmp(echild->prom_node->name, "temperature"))
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attach_one_temp(echild, temp_index++);
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if (!strcmp(echild->prom_node->name, "fan-control"))
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attach_one_fan(echild, fan_index++);
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while ((op = bbc_i2c_getdev(devidx++)) != NULL) {
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if (!strcmp(op->node->name, "temperature"))
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attach_one_temp(bp, op, temp_index++);
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if (!strcmp(op->node->name, "fan-control"))
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attach_one_fan(bp, op, fan_index++);
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}
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if (temp_index != 0 && fan_index != 0) {
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kenvctrld_task = kthread_run(kenvctrld, NULL, "kenvctrld");
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@ -597,26 +556,22 @@ static void destroy_one_fan(struct bbc_fan_control *fp)
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kfree(fp);
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}
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void bbc_envctrl_cleanup(void)
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void bbc_envctrl_cleanup(struct bbc_i2c_bus *bp)
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{
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struct bbc_cpu_temperature *tp;
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struct bbc_fan_control *fp;
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struct bbc_cpu_temperature *tp, *tpos;
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struct bbc_fan_control *fp, *fpos;
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kthread_stop(kenvctrld_task);
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tp = all_bbc_temps;
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while (tp != NULL) {
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struct bbc_cpu_temperature *next = tp->next;
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list_for_each_entry_safe(tp, tpos, &bp->temps, bp_list) {
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list_del(&tp->bp_list);
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list_del(&tp->glob_list);
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destroy_one_temp(tp);
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tp = next;
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}
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all_bbc_temps = NULL;
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fp = all_bbc_fans;
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while (fp != NULL) {
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struct bbc_fan_control *next = fp->next;
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list_for_each_entry_safe(fp, fpos, &bp->fans, bp_list) {
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list_del(&fp->bp_list);
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list_del(&fp->glob_list);
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destroy_one_fan(fp);
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fp = next;
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}
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all_bbc_fans = NULL;
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}
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@ -1,8 +1,7 @@
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/* $Id: bbc_i2c.c,v 1.2 2001/04/02 09:59:08 davem Exp $
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* bbc_i2c.c: I2C low-level driver for BBC device on UltraSPARC-III
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/* bbc_i2c.c: I2C low-level driver for BBC device on UltraSPARC-III
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* platforms.
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*
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* Copyright (C) 2001 David S. Miller (davem@redhat.com)
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* Copyright (C) 2001, 2008 David S. Miller (davem@davemloft.net)
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*/
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#include <linux/module.h>
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@ -14,9 +13,8 @@
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <asm/oplib.h>
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#include <asm/ebus.h>
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#include <asm/spitfire.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <asm/bbc.h>
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#include <asm/io.h>
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@ -53,54 +51,12 @@
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* The second controller also connects to the smartcard reader, if present.
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*/
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#define NUM_CHILDREN 8
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struct bbc_i2c_bus {
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struct bbc_i2c_bus *next;
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int index;
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spinlock_t lock;
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void __iomem *i2c_bussel_reg;
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void __iomem *i2c_control_regs;
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unsigned char own, clock;
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wait_queue_head_t wq;
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volatile int waiting;
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struct linux_ebus_device *bus_edev;
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struct {
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struct linux_ebus_child *device;
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int client_claimed;
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} devs[NUM_CHILDREN];
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};
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static struct bbc_i2c_bus *all_bbc_i2c;
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struct bbc_i2c_client {
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struct bbc_i2c_bus *bp;
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struct linux_ebus_child *echild;
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int bus;
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int address;
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};
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static int find_device(struct bbc_i2c_bus *bp, struct linux_ebus_child *echild)
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static void set_device_claimage(struct bbc_i2c_bus *bp, struct of_device *op, int val)
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{
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int i;
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for (i = 0; i < NUM_CHILDREN; i++) {
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if (bp->devs[i].device == echild) {
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if (bp->devs[i].client_claimed)
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return 0;
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return 1;
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}
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}
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return 0;
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}
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static void set_device_claimage(struct bbc_i2c_bus *bp, struct linux_ebus_child *echild, int val)
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{
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int i;
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for (i = 0; i < NUM_CHILDREN; i++) {
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if (bp->devs[i].device == echild) {
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if (bp->devs[i].device == op) {
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bp->devs[i].client_claimed = val;
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return;
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}
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@ -110,61 +66,47 @@ static void set_device_claimage(struct bbc_i2c_bus *bp, struct linux_ebus_child
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#define claim_device(BP,ECHILD) set_device_claimage(BP,ECHILD,1)
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#define release_device(BP,ECHILD) set_device_claimage(BP,ECHILD,0)
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static struct bbc_i2c_bus *find_bus_for_device(struct linux_ebus_child *echild)
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struct of_device *bbc_i2c_getdev(struct bbc_i2c_bus *bp, int index)
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{
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struct bbc_i2c_bus *bp = all_bbc_i2c;
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struct of_device *op = NULL;
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int curidx = 0, i;
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while (bp != NULL) {
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if (find_device(bp, echild) != 0)
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for (i = 0; i < NUM_CHILDREN; i++) {
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if (!(op = bp->devs[i].device))
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break;
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bp = bp->next;
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if (curidx == index)
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goto out;
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op = NULL;
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curidx++;
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}
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return bp;
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}
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struct linux_ebus_child *bbc_i2c_getdev(int index)
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{
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struct bbc_i2c_bus *bp = all_bbc_i2c;
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struct linux_ebus_child *echild = NULL;
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int curidx = 0;
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while (bp != NULL) {
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struct bbc_i2c_bus *next = bp->next;
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int i;
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for (i = 0; i < NUM_CHILDREN; i++) {
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if (!(echild = bp->devs[i].device))
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break;
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if (curidx == index)
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goto out;
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echild = NULL;
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curidx++;
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}
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bp = next;
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}
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out:
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if (curidx == index)
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return echild;
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return op;
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return NULL;
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}
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struct bbc_i2c_client *bbc_i2c_attach(struct linux_ebus_child *echild)
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struct bbc_i2c_client *bbc_i2c_attach(struct bbc_i2c_bus *bp, struct of_device *op)
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{
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struct bbc_i2c_bus *bp = find_bus_for_device(echild);
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struct bbc_i2c_client *client;
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const u32 *reg;
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if (!bp)
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return NULL;
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client = kzalloc(sizeof(*client), GFP_KERNEL);
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if (!client)
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return NULL;
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client->bp = bp;
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client->echild = echild;
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client->bus = echild->resource[0].start;
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client->address = echild->resource[1].start;
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client->op = op;
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claim_device(bp, echild);
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reg = of_get_property(op->node, "reg", NULL);
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if (!reg) {
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kfree(client);
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return NULL;
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}
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client->bus = reg[0];
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client->address = reg[1];
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claim_device(bp, op);
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return client;
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}
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@ -172,9 +114,9 @@ struct bbc_i2c_client *bbc_i2c_attach(struct linux_ebus_child *echild)
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void bbc_i2c_detach(struct bbc_i2c_client *client)
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{
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struct bbc_i2c_bus *bp = client->bp;
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struct linux_ebus_child *echild = client->echild;
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struct of_device *op = client->op;
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release_device(bp, echild);
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release_device(bp, op);
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kfree(client);
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}
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@ -355,44 +297,43 @@ static void __init reset_one_i2c(struct bbc_i2c_bus *bp)
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writeb(I2C_PCF_IDLE, bp->i2c_control_regs + 0x0);
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}
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static int __init attach_one_i2c(struct linux_ebus_device *edev, int index)
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static struct bbc_i2c_bus * __init attach_one_i2c(struct of_device *op, int index)
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{
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struct bbc_i2c_bus *bp;
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struct linux_ebus_child *echild;
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struct device_node *dp;
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int entry;
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bp = kzalloc(sizeof(*bp), GFP_KERNEL);
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if (!bp)
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return -ENOMEM;
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return NULL;
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bp->i2c_control_regs = ioremap(edev->resource[0].start, 0x2);
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bp->i2c_control_regs = of_ioremap(&op->resource[0], 0, 0x2, "bbc_i2c_regs");
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if (!bp->i2c_control_regs)
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goto fail;
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if (edev->num_addrs == 2) {
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bp->i2c_bussel_reg = ioremap(edev->resource[1].start, 0x1);
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if (!bp->i2c_bussel_reg)
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goto fail;
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}
|
||||
bp->i2c_bussel_reg = of_ioremap(&op->resource[1], 0, 0x1, "bbc_i2c_bussel");
|
||||
if (!bp->i2c_bussel_reg)
|
||||
goto fail;
|
||||
|
||||
bp->waiting = 0;
|
||||
init_waitqueue_head(&bp->wq);
|
||||
if (request_irq(edev->irqs[0], bbc_i2c_interrupt,
|
||||
if (request_irq(op->irqs[0], bbc_i2c_interrupt,
|
||||
IRQF_SHARED, "bbc_i2c", bp))
|
||||
goto fail;
|
||||
|
||||
bp->index = index;
|
||||
bp->bus_edev = edev;
|
||||
bp->op = op;
|
||||
|
||||
spin_lock_init(&bp->lock);
|
||||
bp->next = all_bbc_i2c;
|
||||
all_bbc_i2c = bp;
|
||||
|
||||
entry = 0;
|
||||
for (echild = edev->children;
|
||||
echild && entry < 8;
|
||||
echild = echild->next, entry++) {
|
||||
bp->devs[entry].device = echild;
|
||||
for (dp = op->node->child;
|
||||
dp && entry < 8;
|
||||
dp = dp->sibling, entry++) {
|
||||
struct of_device *child_op;
|
||||
|
||||
child_op = of_find_device_by_node(dp);
|
||||
bp->devs[entry].device = child_op;
|
||||
bp->devs[entry].client_claimed = 0;
|
||||
}
|
||||
|
||||
|
|
@ -406,86 +347,90 @@ static int __init attach_one_i2c(struct linux_ebus_device *edev, int index)
|
|||
|
||||
reset_one_i2c(bp);
|
||||
|
||||
return 0;
|
||||
return bp;
|
||||
|
||||
fail:
|
||||
if (bp->i2c_bussel_reg)
|
||||
iounmap(bp->i2c_bussel_reg);
|
||||
of_iounmap(&op->resource[1], bp->i2c_bussel_reg, 1);
|
||||
if (bp->i2c_control_regs)
|
||||
iounmap(bp->i2c_control_regs);
|
||||
of_iounmap(&op->resource[0], bp->i2c_control_regs, 2);
|
||||
kfree(bp);
|
||||
return -EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int __init bbc_present(void)
|
||||
extern int bbc_envctrl_init(struct bbc_i2c_bus *bp);
|
||||
extern void bbc_envctrl_cleanup(struct bbc_i2c_bus *bp);
|
||||
|
||||
static int __devinit bbc_i2c_probe(struct of_device *op,
|
||||
const struct of_device_id *match)
|
||||
{
|
||||
struct linux_ebus *ebus = NULL;
|
||||
struct linux_ebus_device *edev = NULL;
|
||||
|
||||
for_each_ebus(ebus) {
|
||||
for_each_ebusdev(edev, ebus) {
|
||||
if (!strcmp(edev->prom_node->name, "bbc"))
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
extern int bbc_envctrl_init(void);
|
||||
extern void bbc_envctrl_cleanup(void);
|
||||
static void bbc_i2c_cleanup(void);
|
||||
|
||||
static int __init bbc_i2c_init(void)
|
||||
{
|
||||
struct linux_ebus *ebus = NULL;
|
||||
struct linux_ebus_device *edev = NULL;
|
||||
struct bbc_i2c_bus *bp;
|
||||
int err, index = 0;
|
||||
|
||||
if ((tlb_type != cheetah && tlb_type != cheetah_plus) ||
|
||||
!bbc_present())
|
||||
return -ENODEV;
|
||||
bp = attach_one_i2c(op, index);
|
||||
if (!bp)
|
||||
return -EINVAL;
|
||||
|
||||
for_each_ebus(ebus) {
|
||||
for_each_ebusdev(edev, ebus) {
|
||||
if (!strcmp(edev->prom_node->name, "i2c")) {
|
||||
if (!attach_one_i2c(edev, index))
|
||||
index++;
|
||||
}
|
||||
}
|
||||
err = bbc_envctrl_init(bp);
|
||||
if (err) {
|
||||
free_irq(op->irqs[0], bp);
|
||||
if (bp->i2c_bussel_reg)
|
||||
of_iounmap(&op->resource[0], bp->i2c_bussel_reg, 1);
|
||||
if (bp->i2c_control_regs)
|
||||
of_iounmap(&op->resource[1], bp->i2c_control_regs, 2);
|
||||
kfree(bp);
|
||||
} else {
|
||||
dev_set_drvdata(&op->dev, bp);
|
||||
}
|
||||
|
||||
if (!index)
|
||||
return -ENODEV;
|
||||
|
||||
err = bbc_envctrl_init();
|
||||
if (err)
|
||||
bbc_i2c_cleanup();
|
||||
return err;
|
||||
}
|
||||
|
||||
static void bbc_i2c_cleanup(void)
|
||||
static int __devexit bbc_i2c_remove(struct of_device *op)
|
||||
{
|
||||
struct bbc_i2c_bus *bp = all_bbc_i2c;
|
||||
struct bbc_i2c_bus *bp = dev_get_drvdata(&op->dev);
|
||||
|
||||
bbc_envctrl_cleanup();
|
||||
bbc_envctrl_cleanup(bp);
|
||||
|
||||
while (bp != NULL) {
|
||||
struct bbc_i2c_bus *next = bp->next;
|
||||
free_irq(op->irqs[0], bp);
|
||||
|
||||
free_irq(bp->bus_edev->irqs[0], bp);
|
||||
if (bp->i2c_bussel_reg)
|
||||
of_iounmap(&op->resource[0], bp->i2c_bussel_reg, 1);
|
||||
if (bp->i2c_control_regs)
|
||||
of_iounmap(&op->resource[1], bp->i2c_control_regs, 2);
|
||||
|
||||
if (bp->i2c_bussel_reg)
|
||||
iounmap(bp->i2c_bussel_reg);
|
||||
if (bp->i2c_control_regs)
|
||||
iounmap(bp->i2c_control_regs);
|
||||
kfree(bp);
|
||||
|
||||
kfree(bp);
|
||||
return 0;
|
||||
}
|
||||
|
||||
bp = next;
|
||||
}
|
||||
all_bbc_i2c = NULL;
|
||||
static struct of_device_id bbc_i2c_match[] = {
|
||||
{
|
||||
.name = "i2c",
|
||||
.compatible = "SUNW,bbc-i2c",
|
||||
},
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, bbc_i2c_match);
|
||||
|
||||
static struct of_platform_driver bbc_i2c_driver = {
|
||||
.name = "bbc_i2c",
|
||||
.match_table = bbc_i2c_match,
|
||||
.probe = bbc_i2c_probe,
|
||||
.remove = __devexit_p(bbc_i2c_remove),
|
||||
};
|
||||
|
||||
static int __init bbc_i2c_init(void)
|
||||
{
|
||||
return of_register_driver(&bbc_i2c_driver, &of_bus_type);
|
||||
}
|
||||
|
||||
static void __exit bbc_i2c_exit(void)
|
||||
{
|
||||
of_unregister_driver(&bbc_i2c_driver);
|
||||
}
|
||||
|
||||
module_init(bbc_i2c_init);
|
||||
module_exit(bbc_i2c_cleanup);
|
||||
module_exit(bbc_i2c_exit);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
|
|||
|
|
@ -1,14 +1,79 @@
|
|||
/* $Id: bbc_i2c.h,v 1.2 2001/04/02 09:59:25 davem Exp $ */
|
||||
#ifndef _BBC_I2C_H
|
||||
#define _BBC_I2C_H
|
||||
|
||||
#include <asm/ebus.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/list.h>
|
||||
|
||||
struct bbc_i2c_client;
|
||||
struct bbc_i2c_client {
|
||||
struct bbc_i2c_bus *bp;
|
||||
struct of_device *op;
|
||||
int bus;
|
||||
int address;
|
||||
};
|
||||
|
||||
enum fan_action { FAN_SLOWER, FAN_SAME, FAN_FASTER, FAN_FULLBLAST, FAN_STATE_MAX };
|
||||
|
||||
struct bbc_cpu_temperature {
|
||||
struct list_head bp_list;
|
||||
struct list_head glob_list;
|
||||
|
||||
struct bbc_i2c_client *client;
|
||||
int index;
|
||||
|
||||
/* Current readings, and history. */
|
||||
s8 curr_cpu_temp;
|
||||
s8 curr_amb_temp;
|
||||
s8 prev_cpu_temp;
|
||||
s8 prev_amb_temp;
|
||||
s8 avg_cpu_temp;
|
||||
s8 avg_amb_temp;
|
||||
|
||||
int sample_tick;
|
||||
|
||||
enum fan_action fan_todo[2];
|
||||
#define FAN_AMBIENT 0
|
||||
#define FAN_CPU 1
|
||||
};
|
||||
|
||||
struct bbc_fan_control {
|
||||
struct list_head bp_list;
|
||||
struct list_head glob_list;
|
||||
|
||||
struct bbc_i2c_client *client;
|
||||
int index;
|
||||
|
||||
int psupply_fan_on;
|
||||
int cpu_fan_speed;
|
||||
int system_fan_speed;
|
||||
};
|
||||
|
||||
#define NUM_CHILDREN 8
|
||||
|
||||
struct bbc_i2c_bus {
|
||||
struct bbc_i2c_bus *next;
|
||||
int index;
|
||||
spinlock_t lock;
|
||||
void __iomem *i2c_bussel_reg;
|
||||
void __iomem *i2c_control_regs;
|
||||
unsigned char own, clock;
|
||||
|
||||
wait_queue_head_t wq;
|
||||
volatile int waiting;
|
||||
|
||||
struct list_head temps;
|
||||
struct list_head fans;
|
||||
|
||||
struct of_device *op;
|
||||
struct {
|
||||
struct of_device *device;
|
||||
int client_claimed;
|
||||
} devs[NUM_CHILDREN];
|
||||
};
|
||||
|
||||
/* Probing and attachment. */
|
||||
extern struct linux_ebus_child *bbc_i2c_getdev(int);
|
||||
extern struct bbc_i2c_client *bbc_i2c_attach(struct linux_ebus_child *);
|
||||
extern struct of_device *bbc_i2c_getdev(struct bbc_i2c_bus *, int);
|
||||
extern struct bbc_i2c_client *bbc_i2c_attach(struct bbc_i2c_bus *bp, struct of_device *);
|
||||
extern void bbc_i2c_detach(struct bbc_i2c_client *);
|
||||
|
||||
/* Register read/write. NOTE: Blocking! */
|
||||
|
|
|
|||
Loading…
Reference in New Issue