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-rw-r--r--arch/sh/boards/mach-hp6xx/Makefile8
-rw-r--r--arch/sh/boards/mach-hp6xx/hp6xx_apm.c109
-rw-r--r--arch/sh/boards/mach-hp6xx/pm.c156
-rw-r--r--arch/sh/boards/mach-hp6xx/pm_wakeup.S39
-rw-r--r--arch/sh/boards/mach-hp6xx/setup.c172
5 files changed, 484 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-hp6xx/Makefile b/arch/sh/boards/mach-hp6xx/Makefile
new file mode 100644
index 000000000..4b0fe29e5
--- /dev/null
+++ b/arch/sh/boards/mach-hp6xx/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the HP6xx specific parts of the kernel
+#
+
+obj-y := setup.o
+obj-$(CONFIG_PM) += pm.o pm_wakeup.o
+obj-$(CONFIG_APM_EMULATION) += hp6xx_apm.o
diff --git a/arch/sh/boards/mach-hp6xx/hp6xx_apm.c b/arch/sh/boards/mach-hp6xx/hp6xx_apm.c
new file mode 100644
index 000000000..e5c4c7d34
--- /dev/null
+++ b/arch/sh/boards/mach-hp6xx/hp6xx_apm.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * bios-less APM driver for hp680
+ *
+ * Copyright 2005 (c) Andriy Skulysh <askulysh@gmail.com>
+ * Copyright 2008 (c) Kristoffer Ericson <kristoffer.ericson@gmail.com>
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/apm-emulation.h>
+#include <linux/io.h>
+#include <asm/adc.h>
+#include <mach/hp6xx.h>
+
+/* percentage values */
+#define APM_CRITICAL 10
+#define APM_LOW 30
+
+/* resonably sane values */
+#define HP680_BATTERY_MAX 898
+#define HP680_BATTERY_MIN 486
+#define HP680_BATTERY_AC_ON 1023
+
+#define MODNAME "hp6x0_apm"
+
+#define PGDR 0xa400012c
+
+static void hp6x0_apm_get_power_status(struct apm_power_info *info)
+{
+ int battery, backup, charging, percentage;
+ u8 pgdr;
+
+ battery = adc_single(ADC_CHANNEL_BATTERY);
+ backup = adc_single(ADC_CHANNEL_BACKUP);
+ charging = adc_single(ADC_CHANNEL_CHARGE);
+
+ percentage = 100 * (battery - HP680_BATTERY_MIN) /
+ (HP680_BATTERY_MAX - HP680_BATTERY_MIN);
+
+ /* % of full battery */
+ info->battery_life = percentage;
+
+ /* We want our estimates in minutes */
+ info->units = 0;
+
+ /* Extremely(!!) rough estimate, we will replace this with a datalist later on */
+ info->time = (2 * battery);
+
+ info->ac_line_status = (battery > HP680_BATTERY_AC_ON) ?
+ APM_AC_ONLINE : APM_AC_OFFLINE;
+
+ pgdr = __raw_readb(PGDR);
+ if (pgdr & PGDR_MAIN_BATTERY_OUT) {
+ info->battery_status = APM_BATTERY_STATUS_NOT_PRESENT;
+ info->battery_flag = 0x80;
+ } else if (charging < 8) {
+ info->battery_status = APM_BATTERY_STATUS_CHARGING;
+ info->battery_flag = 0x08;
+ info->ac_line_status = 0x01;
+ } else if (percentage <= APM_CRITICAL) {
+ info->battery_status = APM_BATTERY_STATUS_CRITICAL;
+ info->battery_flag = 0x04;
+ } else if (percentage <= APM_LOW) {
+ info->battery_status = APM_BATTERY_STATUS_LOW;
+ info->battery_flag = 0x02;
+ } else {
+ info->battery_status = APM_BATTERY_STATUS_HIGH;
+ info->battery_flag = 0x01;
+ }
+}
+
+static irqreturn_t hp6x0_apm_interrupt(int irq, void *dev)
+{
+ if (!APM_DISABLED)
+ apm_queue_event(APM_USER_SUSPEND);
+
+ return IRQ_HANDLED;
+}
+
+static int __init hp6x0_apm_init(void)
+{
+ int ret;
+
+ ret = request_irq(HP680_BTN_IRQ, hp6x0_apm_interrupt,
+ 0, MODNAME, NULL);
+ if (unlikely(ret < 0)) {
+ printk(KERN_ERR MODNAME ": IRQ %d request failed\n",
+ HP680_BTN_IRQ);
+ return ret;
+ }
+
+ apm_get_power_status = hp6x0_apm_get_power_status;
+
+ return ret;
+}
+
+static void __exit hp6x0_apm_exit(void)
+{
+ free_irq(HP680_BTN_IRQ, 0);
+}
+
+module_init(hp6x0_apm_init);
+module_exit(hp6x0_apm_exit);
+
+MODULE_AUTHOR("Adriy Skulysh");
+MODULE_DESCRIPTION("hp6xx Advanced Power Management");
+MODULE_LICENSE("GPL");
diff --git a/arch/sh/boards/mach-hp6xx/pm.c b/arch/sh/boards/mach-hp6xx/pm.c
new file mode 100644
index 000000000..fe505ec16
--- /dev/null
+++ b/arch/sh/boards/mach-hp6xx/pm.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * hp6x0 Power Management Routines
+ *
+ * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
+ */
+#include <linux/init.h>
+#include <linux/suspend.h>
+#include <linux/errno.h>
+#include <linux/time.h>
+#include <linux/delay.h>
+#include <linux/gfp.h>
+#include <asm/io.h>
+#include <asm/hd64461.h>
+#include <asm/bl_bit.h>
+#include <mach/hp6xx.h>
+#include <cpu/dac.h>
+#include <asm/freq.h>
+#include <asm/watchdog.h>
+
+#define INTR_OFFSET 0x600
+
+#define STBCR 0xffffff82
+#define STBCR2 0xffffff88
+
+#define STBCR_STBY 0x80
+#define STBCR_MSTP2 0x04
+
+#define MCR 0xffffff68
+#define RTCNT 0xffffff70
+
+#define MCR_RMODE 2
+#define MCR_RFSH 4
+
+extern u8 wakeup_start;
+extern u8 wakeup_end;
+
+static void pm_enter(void)
+{
+ u8 stbcr, csr;
+ u16 frqcr, mcr;
+ u32 vbr_new, vbr_old;
+
+ set_bl_bit();
+
+ /* set wdt */
+ csr = sh_wdt_read_csr();
+ csr &= ~WTCSR_TME;
+ csr |= WTCSR_CKS_4096;
+ sh_wdt_write_csr(csr);
+ csr = sh_wdt_read_csr();
+ sh_wdt_write_cnt(0);
+
+ /* disable PLL1 */
+ frqcr = __raw_readw(FRQCR);
+ frqcr &= ~(FRQCR_PLLEN | FRQCR_PSTBY);
+ __raw_writew(frqcr, FRQCR);
+
+ /* enable standby */
+ stbcr = __raw_readb(STBCR);
+ __raw_writeb(stbcr | STBCR_STBY | STBCR_MSTP2, STBCR);
+
+ /* set self-refresh */
+ mcr = __raw_readw(MCR);
+ __raw_writew(mcr & ~MCR_RFSH, MCR);
+
+ /* set interrupt handler */
+ asm volatile("stc vbr, %0" : "=r" (vbr_old));
+ vbr_new = get_zeroed_page(GFP_ATOMIC);
+ udelay(50);
+ memcpy((void*)(vbr_new + INTR_OFFSET),
+ &wakeup_start, &wakeup_end - &wakeup_start);
+ asm volatile("ldc %0, vbr" : : "r" (vbr_new));
+
+ __raw_writew(0, RTCNT);
+ __raw_writew(mcr | MCR_RFSH | MCR_RMODE, MCR);
+
+ cpu_sleep();
+
+ asm volatile("ldc %0, vbr" : : "r" (vbr_old));
+
+ free_page(vbr_new);
+
+ /* enable PLL1 */
+ frqcr = __raw_readw(FRQCR);
+ frqcr |= FRQCR_PSTBY;
+ __raw_writew(frqcr, FRQCR);
+ udelay(50);
+ frqcr |= FRQCR_PLLEN;
+ __raw_writew(frqcr, FRQCR);
+
+ __raw_writeb(stbcr, STBCR);
+
+ clear_bl_bit();
+}
+
+static int hp6x0_pm_enter(suspend_state_t state)
+{
+ u8 stbcr, stbcr2;
+#ifdef CONFIG_HD64461_ENABLER
+ u8 scr;
+ u16 hd64461_stbcr;
+#endif
+
+#ifdef CONFIG_HD64461_ENABLER
+ outb(0, HD64461_PCC1CSCIER);
+
+ scr = inb(HD64461_PCC1SCR);
+ scr |= HD64461_PCCSCR_VCC1;
+ outb(scr, HD64461_PCC1SCR);
+
+ hd64461_stbcr = inw(HD64461_STBCR);
+ hd64461_stbcr |= HD64461_STBCR_SPC1ST;
+ outw(hd64461_stbcr, HD64461_STBCR);
+#endif
+
+ __raw_writeb(0x1f, DACR);
+
+ stbcr = __raw_readb(STBCR);
+ __raw_writeb(0x01, STBCR);
+
+ stbcr2 = __raw_readb(STBCR2);
+ __raw_writeb(0x7f , STBCR2);
+
+ outw(0xf07f, HD64461_SCPUCR);
+
+ pm_enter();
+
+ outw(0, HD64461_SCPUCR);
+ __raw_writeb(stbcr, STBCR);
+ __raw_writeb(stbcr2, STBCR2);
+
+#ifdef CONFIG_HD64461_ENABLER
+ hd64461_stbcr = inw(HD64461_STBCR);
+ hd64461_stbcr &= ~HD64461_STBCR_SPC1ST;
+ outw(hd64461_stbcr, HD64461_STBCR);
+
+ outb(0x4c, HD64461_PCC1CSCIER);
+ outb(0x00, HD64461_PCC1CSCR);
+#endif
+
+ return 0;
+}
+
+static const struct platform_suspend_ops hp6x0_pm_ops = {
+ .enter = hp6x0_pm_enter,
+ .valid = suspend_valid_only_mem,
+};
+
+static int __init hp6x0_pm_init(void)
+{
+ suspend_set_ops(&hp6x0_pm_ops);
+ return 0;
+}
+
+late_initcall(hp6x0_pm_init);
diff --git a/arch/sh/boards/mach-hp6xx/pm_wakeup.S b/arch/sh/boards/mach-hp6xx/pm_wakeup.S
new file mode 100644
index 000000000..0fd43301f
--- /dev/null
+++ b/arch/sh/boards/mach-hp6xx/pm_wakeup.S
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
+ */
+
+#include <linux/linkage.h>
+#include <cpu/mmu_context.h>
+
+/*
+ * Kernel mode register usage:
+ * k0 scratch
+ * k1 scratch
+ * For more details, please have a look at entry.S
+ */
+
+#define k0 r0
+#define k1 r1
+
+ENTRY(wakeup_start)
+! clear STBY bit
+ mov #-126, k1
+ and #127, k0
+ mov.b k0, @k1
+! enable refresh
+ mov.l 5f, k1
+ mov.w 6f, k0
+ mov.w k0, @k1
+! jump to handler
+ mov.l 4f, k1
+ jmp @k1
+ nop
+
+ .align 2
+4: .long handle_interrupt
+5: .long 0xffffff68
+6: .word 0x0524
+
+ENTRY(wakeup_end)
+ nop
diff --git a/arch/sh/boards/mach-hp6xx/setup.c b/arch/sh/boards/mach-hp6xx/setup.c
new file mode 100644
index 000000000..2ceead68d
--- /dev/null
+++ b/arch/sh/boards/mach-hp6xx/setup.c
@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/sh/boards/hp6xx/setup.c
+ *
+ * Copyright (C) 2002 Andriy Skulysh
+ * Copyright (C) 2007 Kristoffer Ericson <Kristoffer_e1@hotmail.com>
+ *
+ * Setup code for HP620/HP660/HP680/HP690 (internal peripherials only)
+ */
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/sh_intc.h>
+#include <sound/sh_dac_audio.h>
+#include <asm/hd64461.h>
+#include <asm/io.h>
+#include <mach/hp6xx.h>
+#include <cpu/dac.h>
+
+#define SCPCR 0xa4000116
+#define SCPDR 0xa4000136
+
+/* CF Slot */
+static struct resource cf_ide_resources[] = {
+ [0] = {
+ .start = 0x15000000 + 0x1f0,
+ .end = 0x15000000 + 0x1f0 + 0x08 - 0x01,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 0x15000000 + 0x1fe,
+ .end = 0x15000000 + 0x1fe + 0x01,
+ .flags = IORESOURCE_MEM,
+ },
+ [2] = {
+ .start = evt2irq(0xba0),
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device cf_ide_device = {
+ .name = "pata_platform",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(cf_ide_resources),
+ .resource = cf_ide_resources,
+};
+
+static struct platform_device jornadakbd_device = {
+ .name = "jornada680_kbd",
+ .id = -1,
+};
+
+static void dac_audio_start(struct dac_audio_pdata *pdata)
+{
+ u16 v;
+ u8 v8;
+
+ /* HP Jornada 680/690 speaker on */
+ v = inw(HD64461_GPADR);
+ v &= ~HD64461_GPADR_SPEAKER;
+ outw(v, HD64461_GPADR);
+
+ /* HP Palmtop 620lx/660lx speaker on */
+ v8 = inb(PKDR);
+ v8 &= ~PKDR_SPEAKER;
+ outb(v8, PKDR);
+
+ sh_dac_enable(pdata->channel);
+}
+
+static void dac_audio_stop(struct dac_audio_pdata *pdata)
+{
+ u16 v;
+ u8 v8;
+
+ /* HP Jornada 680/690 speaker off */
+ v = inw(HD64461_GPADR);
+ v |= HD64461_GPADR_SPEAKER;
+ outw(v, HD64461_GPADR);
+
+ /* HP Palmtop 620lx/660lx speaker off */
+ v8 = inb(PKDR);
+ v8 |= PKDR_SPEAKER;
+ outb(v8, PKDR);
+
+ sh_dac_output(0, pdata->channel);
+ sh_dac_disable(pdata->channel);
+}
+
+static struct dac_audio_pdata dac_audio_platform_data = {
+ .buffer_size = 64000,
+ .channel = 1,
+ .start = dac_audio_start,
+ .stop = dac_audio_stop,
+};
+
+static struct platform_device dac_audio_device = {
+ .name = "dac_audio",
+ .id = -1,
+ .dev = {
+ .platform_data = &dac_audio_platform_data,
+ }
+
+};
+
+static struct platform_device *hp6xx_devices[] __initdata = {
+ &cf_ide_device,
+ &jornadakbd_device,
+ &dac_audio_device,
+};
+
+static void __init hp6xx_init_irq(void)
+{
+ /* Gets touchscreen and powerbutton IRQ working */
+ plat_irq_setup_pins(IRQ_MODE_IRQ);
+}
+
+static int __init hp6xx_devices_setup(void)
+{
+ return platform_add_devices(hp6xx_devices, ARRAY_SIZE(hp6xx_devices));
+}
+
+static void __init hp6xx_setup(char **cmdline_p)
+{
+ u8 v8;
+ u16 v;
+
+ v = inw(HD64461_STBCR);
+ v |= HD64461_STBCR_SURTST | HD64461_STBCR_SIRST |
+ HD64461_STBCR_STM1ST | HD64461_STBCR_STM0ST |
+ HD64461_STBCR_SAFEST | HD64461_STBCR_SPC0ST |
+ HD64461_STBCR_SMIAST | HD64461_STBCR_SAFECKE_OST|
+ HD64461_STBCR_SAFECKE_IST;
+#ifndef CONFIG_HD64461_ENABLER
+ v |= HD64461_STBCR_SPC1ST;
+#endif
+ outw(v, HD64461_STBCR);
+ v = inw(HD64461_GPADR);
+ v |= HD64461_GPADR_SPEAKER | HD64461_GPADR_PCMCIA0;
+ outw(v, HD64461_GPADR);
+
+ outw(HD64461_PCCGCR_VCC0 | HD64461_PCCSCR_VCC1, HD64461_PCC0GCR);
+
+#ifndef CONFIG_HD64461_ENABLER
+ outw(HD64461_PCCGCR_VCC0 | HD64461_PCCSCR_VCC1, HD64461_PCC1GCR);
+#endif
+
+ sh_dac_output(0, DAC_SPEAKER_VOLUME);
+ sh_dac_disable(DAC_SPEAKER_VOLUME);
+ v8 = __raw_readb(DACR);
+ v8 &= ~DACR_DAE;
+ __raw_writeb(v8,DACR);
+
+ v8 = __raw_readb(SCPDR);
+ v8 |= SCPDR_TS_SCAN_X | SCPDR_TS_SCAN_Y;
+ v8 &= ~SCPDR_TS_SCAN_ENABLE;
+ __raw_writeb(v8, SCPDR);
+
+ v = __raw_readw(SCPCR);
+ v &= ~SCPCR_TS_MASK;
+ v |= SCPCR_TS_ENABLE;
+ __raw_writew(v, SCPCR);
+}
+device_initcall(hp6xx_devices_setup);
+
+static struct sh_machine_vector mv_hp6xx __initmv = {
+ .mv_name = "hp6xx",
+ .mv_setup = hp6xx_setup,
+ /* Enable IRQ0 -> IRQ3 in IRQ_MODE */
+ .mv_init_irq = hp6xx_init_irq,
+};
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