diff options
author | Richard Purdie <rpurdie@rpsys.net> | 2005-11-13 10:07:47 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-13 10:07:47 (GMT) |
commit | e8b6f7f437a624fc2e2a2ec92fbeffdcf6f0e11e (patch) | |
tree | 2b80123b811f59c733b6a77615bc4a236863be8d /arch/arm/mach-pxa/spitz_pm.c | |
parent | d72f25b0dfb0807bd758da56a7ed88c0eb6e70d8 (diff) | |
download | linux-e8b6f7f437a624fc2e2a2ec92fbeffdcf6f0e11e.tar.xz |
[ARM] 3159/1: SharpSL: Add PM device driver for the SL-Cx00 machines.
Patch from Richard Purdie
Add a SharpSL PM device driver for the SL-Cxx00 machines.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/spitz_pm.c')
-rw-r--r-- | arch/arm/mach-pxa/spitz_pm.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/spitz_pm.c b/arch/arm/mach-pxa/spitz_pm.c new file mode 100644 index 0000000..3ce7486 --- /dev/null +++ b/arch/arm/mach-pxa/spitz_pm.c @@ -0,0 +1,233 @@ +/* + * Battery and Power Management code for the Sharp SL-Cxx00 + * + * Copyright (c) 2005 Richard Purdie + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#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/platform_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/arch/sharpsl.h> +#include <asm/arch/spitz.h> +#include <asm/arch/pxa-regs.h> +#include "sharpsl.h" + +static int spitz_last_ac_status; + +static void spitz_charger_init(void) +{ + pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); + pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); +} + +static void spitz_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"); + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE); + } else { + dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE); + } +} + +static void spitz_measure_temp(int on) +{ + if (on) + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); + else + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); +} + +static void spitz_charge(int on) +{ + if (on) { + if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); + } else { + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); + } + } else { + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); + } +} + +static void spitz_discharge(int on) +{ + if (on) + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); + else + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); +} + +/* HACK - For unknown reasons, accurate voltage readings are only made with a load + on the power bus which the green led on spitz provides */ +static void spitz_discharge1(int on) +{ + if (on) + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); + else + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); +} + +static void spitz_presuspend(void) +{ + spitz_last_ac_status = STATUS_AC_IN(); + + /* GPIO Sleep Register */ + PGSR0 = 0x00144018; + PGSR1 = 0x00EF0000; + if (machine_is_akita()) { + PGSR2 = 0x2121C000; + PGSR3 = 0x00600400; + } else { + PGSR2 = 0x0121C000; + PGSR3 = 0x00600000; + } + + PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; + PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; + PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; + PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; + PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); + + pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); + + PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); + PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); + PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; + PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); + PKSR = 0xffffffff; // clear + + /* nRESET_OUT Disable */ + PSLR |= PSLR_SL_ROD; + + /* Clear reset status */ + RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; + + /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ + PCFR = PCFR_GPR_EN | PCFR_OPDE; +} + +static void spitz_postsuspend(void) +{ + pxa_gpio_mode(GPIO18_RDY_MD); + pxa_gpio_mode(10 | GPIO_IN); +} + +static int spitz_should_wakeup(unsigned int resume_on_alarm) +{ + int is_resume = 0; + int acin = STATUS_AC_IN(); + + if (spitz_last_ac_status != acin) { + if (acin) { + /* charge on */ + sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; + dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); + } else { + /* charge off */ + dev_dbg(sharpsl_pm.dev, "AC Removed\n"); + CHARGE_LED_OFF(); + CHARGE_OFF(); + sharpsl_pm.charge_mode = CHRG_OFF; + } + spitz_last_ac_status = acin; + /* Return to suspend as this must be what we were woken for */ + return 0; + } + + if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) + is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); + + if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) + is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); + + if (resume_on_alarm && (PEDR & PWER_RTC)) + is_resume |= PWER_RTC; + + dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); + return is_resume; +} + +static unsigned long spitz_charger_wakeup(void) +{ + return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); +} + +static int spitz_acin_status(void) +{ + return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); +} + +struct sharpsl_charger_machinfo spitz_pm_machinfo = { + .init = spitz_charger_init, + .gpio_batlock = SPITZ_GPIO_BAT_COVER, + .gpio_acin = SPITZ_GPIO_AC_IN, + .gpio_batfull = SPITZ_GPIO_CHRG_FULL, + .gpio_fatal = SPITZ_GPIO_FATAL_BAT, + .status_acin = spitz_acin_status, + .discharge = spitz_discharge, + .discharge1 = spitz_discharge1, + .charge = spitz_charge, + .chargeled = spitz_charge_led, + .measure_temp = spitz_measure_temp, + .presuspend = spitz_presuspend, + .postsuspend = spitz_postsuspend, + .charger_wakeup = spitz_charger_wakeup, + .should_wakeup = spitz_should_wakeup, + .bat_levels = 40, + .bat_levels_noac = spitz_battery_levels_noac, + .bat_levels_acin = spitz_battery_levels_acin, + .status_high_acin = 188, + .status_low_acin = 178, + .status_high_noac = 185, + .status_low_noac = 175, +}; + +static struct platform_device *spitzpm_device; + +static int __devinit spitzpm_init(void) +{ + int ret; + + spitzpm_device = platform_device_alloc("sharpsl-pm", -1); + if (!spitzpm_device) + return -ENOMEM; + + spitzpm_device->dev.platform_data = &spitz_pm_machinfo; + ret = platform_device_add(spitzpm_device); + + if (ret) + platform_device_put(spitzpm_device); + + return ret; +} + +static void spitzpm_exit(void) +{ + platform_device_unregister(spitzpm_device); +} + +module_init(spitzpm_init); +module_exit(spitzpm_exit); |