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Subject[rfc] Collie battery status sensing code
Hi!

This is collie battery sensing code. It differs from sharpsl code a
bit -- because it is dependend on ucb1x00, not on platform bus.

I guess I should reorganize #include's and remove #if 0-ed
code. Anything else?
Pavel

diff --git a/arch/arm/mach-sa1100/collie_pm.c b/arch/arm/mach-sa1100/collie_pm.c
new file mode 100644
index 0000000..491d03a
--- /dev/null
+++ b/arch/arm/mach-sa1100/collie_pm.c
@@ -0,0 +1,324 @@
+/*
+ * Based on spitz_pm.c and sharp code.
+ *
+ * Copyright (C) 2001 SHARP
+ * Copyright 2005 Pavel Machek <pavel@suse.cz>
+ *
+ * Distribute under GPLv2.
+ */
+
+#include <linux/module.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <asm/apm.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/hardware/scoop.h>
+#include <asm/dma.h>
+#include <linux/platform_device.h>
+
+#include <asm/arch/collie.h>
+#include "../mach-pxa/sharpsl.h"
+#include "../drivers/mfd/ucb1x00.h"
+#include <asm/mach/sharpsl_param.h>
+
+#ifdef CONFIG_MCP_UCB1200_TS
+#error Battery interferes with touchscreen
+#endif
+
+static struct ucb1x00 *ucb;
+
+#define ConvRevise(x) ( ( ad_revise * x ) / 652 )
+#define ADCtoPower(x) (( 330 * x * 2 ) / 1024 )
+
+static int ad_revise = 0;
+
+static void collie_charger_init(void)
+{
+ int err;
+
+ /* get ad revise */
+ if (sharpsl_param.adadj != -1) {
+ ad_revise = sharpsl_param.adadj;
+ } else {
+ ad_revise = 0;
+ }
+
+ /* Register interrupt handler. */
+ if ((err = request_irq(COLLIE_IRQ_GPIO_AC_IN, sharpsl_ac_isr, SA_INTERRUPT,
+ "ACIN", sharpsl_ac_isr))) {
+ printk("Could not get irq %d.\n", COLLIE_IRQ_GPIO_AC_IN);
+ return;
+ }
+
+ /* Register interrupt handler. */
+ if ((err = request_irq(COLLIE_IRQ_GPIO_CO, sharpsl_chrg_full_isr, SA_INTERRUPT,
+ "CO", sharpsl_chrg_full_isr))) {
+ free_irq(COLLIE_IRQ_GPIO_AC_IN, sharpsl_ac_isr);
+ printk("Could not get irq %d.\n", COLLIE_IRQ_GPIO_CO);
+ return;
+ }
+
+ if (!ucb)
+ printk(KERN_CRIT "ucb is null!\n");
+
+ /* Set transition detect */
+ ucb1x00_enable_irq(ucb, COLLIE_GPIO_AC_IN, UCB_RISING);
+ ucb1x00_enable_irq(ucb, COLLIE_GPIO_CO, UCB_RISING);
+
+ ucb1x00_adc_enable(ucb);
+ ucb1x00_io_set_dir(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON | COLLIE_TC35143_GPIO_TMP_ON |
+ COLLIE_TC35143_GPIO_BBAT_ON);
+ return;
+}
+
+static void collie_charge_led(int val)
+{
+ if (val == SHARPSL_LED_ERROR) {
+ dev_dbg(sharpsl_pm.dev, "Charge LED Error\n");
+ } else if (val == SHARPSL_LED_ON) {
+ dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
+ } else {
+ dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
+ }
+}
+
+static void collie_measure_temp(int on)
+{
+ if (on)
+ ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_TMP_ON, 0);
+ else
+ ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_TMP_ON);
+}
+
+static void collie_charge(int on)
+{
+ if (on) {
+ printk("Should start charger\n");
+ } else {
+ printk("Should stop charger\n");
+ }
+#ifdef I_AM_SURE
+#define CF_BUF_CTRL_BASE 0xF0800000
+#define SCOOP_REG(adr) (*(volatile unsigned short*)(CF_BUF_CTRL_BASE+(adr)))
+#define SCOOP_REG_GPWR SCOOP_REG(SCOOP_GPWR)
+
+ if (on) {
+ SCOOP_REG_GPWR |= COLLIE_SCP_CHARGE_ON;
+ } else {
+ SCOOP_REG_GPWR &= ~COLLIE_SCP_CHARGE_ON;
+ }
+#endif
+}
+
+static void collie_discharge(int on)
+{
+}
+
+static void collie_discharge1(int on)
+{
+}
+
+static void collie_presuspend(void)
+{
+}
+
+static void collie_postsuspend(void)
+{
+}
+
+static int collie_should_wakeup(unsigned int resume_on_alarm)
+{
+ return 0;
+}
+
+static unsigned long collie_charger_wakeup(void)
+{
+ return 0;
+}
+
+static int collie_acin_status(void)
+{
+ int ret = GPLR & COLLIE_GPIO_AC_IN;
+ printk("AC status = %d\n", ret);
+ return ret;
+}
+
+int collie_read_backup_battery(void)
+{
+ int voltage;
+
+ /* Gives 75..130 */
+ ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_BBAT_ON, 0);
+ voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);
+
+ ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);
+
+ printk("Backup battery = %d(%d)\n", ADCtoPower(voltage), voltage);
+
+ return ADCtoPower(voltage);
+}
+
+int collie_read_main_battery(void)
+{
+ int voltage;
+
+ collie_read_temp();
+ collie_read_backup_battery();
+ ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);
+ ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_MBAT_ON, 0);
+ voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);
+
+ ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON);
+
+ /*
+ gives values 160..255 with battery removed... and
+ 145..255 with battery inserted. (on AC)
+
+ On battery, it goes as low as 80.
+ */
+
+ printk("Main battery = %d(%d)\n",ADCtoPower((voltage+ConvRevise(voltage))),voltage);
+
+ if ( voltage != -1 ) {
+ return ADCtoPower((voltage+ConvRevise(voltage)));
+ } else {
+ return voltage;
+ }
+}
+
+int collie_read_temp(void)
+{
+ int voltage;
+
+ /* temp must be > 973, main battery must be < 465 */
+ /* FIXME sharpsl_pm.c has both conditions negated? */
+
+ ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_TMP_ON, 0);
+ voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD0, UCB_SYNC);
+ ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_TMP_ON);
+
+ /* >1010 = battery removed.
+ 460 = 22C ?
+ higer = lower temp ?
+ */
+
+ printk("Battery temp = %d\n", voltage);
+ return voltage;
+}
+
+static int collie_read_acin(void)
+{
+ return 0x1;
+}
+
+static unsigned long read_devdata(int which)
+{
+ switch (which) {
+ case SHARPSL_BATT_VOLT:
+ return collie_read_main_battery();
+ case SHARPSL_BATT_TEMP:
+ return collie_read_temp();
+ case SHARPSL_ACIN_VOLT:
+ return collie_read_acin();
+ case SHARPSL_STATUS_ACIN:
+ case SHARPSL_STATUS_LOCK:
+ case SHARPSL_STATUS_CHRGFULL:
+ case SHARPSL_STATUS_FATAL:
+ default:
+ return ~0;
+ }
+#if 0
+It should be okay. Nobody really needs those.
+ .gpio_batlock = COLLIE_GPIO_BAT_COVER,
+ .gpio_acin = COLLIE_GPIO_AC_IN,
+ .gpio_batfull = COLLIE_GPIO_CHRG_FULL,
+ .gpio_fatal = COLLIE_GPIO_FATAL_BAT,
+#endif
+}
+
+struct battery_thresh spitz_battery_levels_noac[] = {
+#ifdef FOO_FRONTLIGHT
+ { 368, 100},
+ { 358, 25},
+ { 356, 5},
+ { 0, 0},
+#else
+ { 378, 100},
+ { 365, 25},
+ { 363, 5},
+ { 0, 0},
+#endif
+};
+
+struct battery_thresh spitz_battery_levels_acin[] = {
+#ifdef FOO_FRONTLIGHT
+ { 368, 100},
+ { 358, 25},
+ { 356, 5},
+ { 0, 0},
+#else
+ { 378, 100},
+ { 365, 25},
+ { 363, 5},
+ { 0, 0},
+#endif
+};
+
+struct sharpsl_charger_machinfo collie_pm_machinfo = {
+ .init = collie_charger_init,
+ .read_devdata = read_devdata,
+ .discharge = collie_discharge,
+ .discharge1 = collie_discharge1,
+ .charge = collie_charge,
+ .measure_temp = collie_measure_temp,
+ .presuspend = collie_presuspend,
+ .postsuspend = collie_postsuspend,
+ .charger_wakeup = collie_charger_wakeup,
+ .should_wakeup = collie_should_wakeup,
+ .bat_levels = 3,
+ .bat_levels_noac = spitz_battery_levels_noac,
+ .bat_levels_acin = spitz_battery_levels_acin,
+ .status_high_acin = 368,
+ .status_low_acin = 358,
+ .status_high_noac = 368,
+ .status_low_noac = 358,
+};
+
+extern struct sharpsl_pm_status sharpsl_pm;
+
+static int __init collie_pm_add(struct ucb1x00_dev *pdev)
+{
+ sharpsl_pm.dev = NULL;
+ sharpsl_pm.machinfo = &collie_pm_machinfo;
+ ucb = pdev->ucb;
+ return sharpsl_pm_init();
+}
+
+static int collie_pm_remove(struct ucb1x00_dev *pdev)
+{
+ return sharpsl_pm_done();
+}
+
+static struct ucb1x00_driver collie_pm_driver = {
+ .add = collie_pm_add,
+ .remove = collie_pm_remove,
+};
+
+static int __init collie_pm_init(void)
+{
+ return ucb1x00_register_driver(&collie_pm_driver);
+}
+
+static void __exit collie_pm_exit(void)
+{
+ ucb1x00_unregister_driver(&collie_pm_driver);
+}
+
+late_initcall(collie_pm_init);
+module_exit(collie_pm_exit);
--
Web maintainer for suspend.sf.net (www.sf.net/projects/suspend) wanted...
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