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openwrt-xburst/target/linux/s3c24xx/patches/0033-gta02-acc.patch.patch
mirko cc3146824a add support for target 3c24xx (more known as Openmoko GTA02 "Freerunner") and merge it with the openmoko-target and the work Michael Buesch <mb> did 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13609 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-12-12 00:02:36 +00:00

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29 KiB
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From 0f43da072e28d0bad639cb6823a7759112ff3489 Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Wed, 16 Jul 2008 14:46:56 +0100
Subject: [PATCH] gta02-acc.patch
---
arch/arm/mach-s3c2410/mach-gta01.c | 2 +-
arch/arm/mach-s3c2410/mach-qt2410.c | 2 +-
arch/arm/mach-s3c2440/mach-gta02.c | 181 +++++++++++++++--
drivers/input/misc/lis302dl.c | 350 ++++++++++++-------------------
drivers/spi/spi_s3c24xx_gpio.c | 23 ++-
include/asm-arm/arch-s3c2410/spi-gpio.h | 6 +-
include/linux/lis302dl.h | 102 +++++++++
7 files changed, 429 insertions(+), 237 deletions(-)
diff --git a/arch/arm/mach-s3c2410/mach-gta01.c b/arch/arm/mach-s3c2410/mach-gta01.c
index 87bb189..0543daa 100644
--- a/arch/arm/mach-s3c2410/mach-gta01.c
+++ b/arch/arm/mach-s3c2410/mach-gta01.c
@@ -510,7 +510,7 @@ static struct spi_board_info gta01_spi_board_info[] = {
},
};
-static void spi_gpio_cs(struct s3c2410_spigpio_info *spi, int cs)
+static void spi_gpio_cs(struct s3c2410_spigpio_info *spi, int csidx, int cs)
{
switch (cs) {
case BITBANG_CS_ACTIVE:
diff --git a/arch/arm/mach-s3c2410/mach-qt2410.c b/arch/arm/mach-s3c2410/mach-qt2410.c
index a1caf4b..6f7b56d 100644
--- a/arch/arm/mach-s3c2410/mach-qt2410.c
+++ b/arch/arm/mach-s3c2410/mach-qt2410.c
@@ -214,7 +214,7 @@ static struct platform_device qt2410_led = {
/* SPI */
-static void spi_gpio_cs(struct s3c2410_spigpio_info *spi, int cs)
+static void spi_gpio_cs(struct s3c2410_spigpio_info *spi, int csidx, int cs)
{
switch (cs) {
case BITBANG_CS_ACTIVE:
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
index d11da10..3fbb131 100644
--- a/arch/arm/mach-s3c2440/mach-gta02.c
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
@@ -78,6 +78,9 @@
#include <linux/glamofb.h>
+/* arbitrates which sensor IRQ owns the shared SPI bus */
+static spinlock_t motion_irq_lock;
+
static struct map_desc gta02_iodesc[] __initdata = {
{
.virtual = 0xe0000000,
@@ -377,8 +380,6 @@ static struct platform_device *gta02_devices[] __initdata = {
&s3c_device_usbgadget,
&s3c_device_nand,
&s3c_device_ts,
- &s3c_device_spi0,
- &s3c_device_spi1,
&gta02_nor_flash,
};
@@ -478,10 +479,12 @@ static struct spi_board_info gta02_spi_board_info[] = {
},
};
+#if 0 /* currently this is not used and we use gpio spi */
static struct glamo_spi_info glamo_spi_cfg = {
.board_size = ARRAY_SIZE(gta02_spi_board_info),
.board_info = gta02_spi_board_info,
};
+#endif /* 0 */
static struct glamo_spigpio_info glamo_spigpio_cfg = {
.pin_clk = GLAMO_GPIO10_OUTPUT,
@@ -507,16 +510,99 @@ static struct platform_device gta01_led_dev = {
/* SPI: Accelerometers attached to SPI of s3c244x */
-static void gta02_spi_acc_set_cs(struct s3c2410_spi_info *spi, int cs, int pol)
+/*
+ * Situation is that Linux SPI can't work in an interrupt context, so we
+ * implement our own bitbang here. Arbitration is needed because not only
+ * can this interrupt happen at any time even if foreground wants to use
+ * the bitbang API from Linux, but multiple motion sensors can be on the
+ * same SPI bus, and multiple interrupts can happen.
+ *
+ * Foreground / interrupt arbitration is okay because the interrupts are
+ * disabled around all the foreground SPI code.
+ *
+ * Interrupt / Interrupt arbitration is evidently needed, otherwise we
+ * lose edge-triggered service after a while due to the two sensors sharing
+ * the SPI bus having irqs at the same time eventually.
+ *
+ * Servicing is typ 75 - 100us at 400MHz.
+ */
+
+/* #define DEBUG_SPEW_MS */
+#define MG_PER_SAMPLE 18
+
+void gat02_lis302dl_bitbang_read(struct lis302dl_info *lis)
{
- s3c2410_gpio_setpin(cs, pol);
+ struct lis302dl_platform_data *pdata = lis->pdata;
+ u8 shifter = 0xc0 | LIS302DL_REG_OUT_X; /* read, autoincrement */
+ int n, n1;
+ unsigned long flags;
+#ifdef DEBUG_SPEW_MS
+ s8 x, y, z;
+#endif
+
+ spin_lock_irqsave(&motion_irq_lock, flags);
+ s3c2410_gpio_setpin(pdata->pin_chip_select, 0);
+ for (n = 0; n < 8; n++) { /* write the r/w, inc and address */
+ s3c2410_gpio_setpin(pdata->pin_clk, 0);
+ s3c2410_gpio_setpin(pdata->pin_mosi, (shifter >> 7) & 1);
+ s3c2410_gpio_setpin(pdata->pin_clk, 1);
+ shifter <<= 1;
+ }
+ for (n = 0; n < 5; n++) { /* 5 consequetive registers */
+ for (n1 = 0; n1 < 8; n1++) { /* 8 bits each */
+ s3c2410_gpio_setpin(pdata->pin_clk, 0);
+ s3c2410_gpio_setpin(pdata->pin_clk, 1);
+ shifter <<= 1;
+ if (s3c2410_gpio_getpin(pdata->pin_miso))
+ shifter |= 1;
+ }
+ switch (n) {
+ case 0:
+#ifdef DEBUG_SPEW_MS
+ x = shifter;
+#endif
+ input_report_rel(lis->input_dev, REL_X, MG_PER_SAMPLE * (s8)shifter);
+ break;
+ case 2:
+#ifdef DEBUG_SPEW_MS
+ y = shifter;
+#endif
+ input_report_rel(lis->input_dev, REL_Y, MG_PER_SAMPLE * (s8)shifter);
+ break;
+ case 4:
+#ifdef DEBUG_SPEW_MS
+ z = shifter;
+#endif
+ input_report_rel(lis->input_dev, REL_Z, MG_PER_SAMPLE * (s8)shifter);
+ break;
+ }
+ }
+ s3c2410_gpio_setpin(pdata->pin_chip_select, 1);
+ spin_unlock_irqrestore(&motion_irq_lock, flags);
+ input_sync(lis->input_dev);
+#ifdef DEBUG_SPEW_MS
+ printk("%s: %d %d %d\n", pdata->name, x, y, z);
+#endif
}
-static const struct lis302dl_platform_data lis302_pdata[] = {
+
+struct lis302dl_platform_data lis302_pdata[] = {
{
- .name = "lis302-1 (top)"
+ .name = "lis302-1 (top)",
+ .pin_chip_select= S3C2410_GPD12,
+ .pin_clk = S3C2410_GPG7,
+ .pin_mosi = S3C2410_GPG6,
+ .pin_miso = S3C2410_GPG5,
+ .open_drain = 1, /* altered at runtime by PCB rev */
+ .lis302dl_bitbang_read = gat02_lis302dl_bitbang_read,
}, {
- .name = "lis302-2 (bottom)"
+ .name = "lis302-2 (bottom)",
+ .pin_chip_select= S3C2410_GPD13,
+ .pin_clk = S3C2410_GPG7,
+ .pin_mosi = S3C2410_GPG6,
+ .pin_miso = S3C2410_GPG5,
+ .open_drain = 1, /* altered at runtime by PCB rev */
+ .lis302dl_bitbang_read = gat02_lis302dl_bitbang_read,
},
};
@@ -525,26 +611,75 @@ static struct spi_board_info gta02_spi_acc_bdinfo[] = {
.modalias = "lis302dl",
.platform_data = &lis302_pdata[0],
.irq = GTA02_IRQ_GSENSOR_1,
- .max_speed_hz = 400 * 1000,
+ .max_speed_hz = 10 * 1000 * 1000,
.bus_num = 1,
- .chip_select = S3C2410_GPD12,
+ .chip_select = 0,
.mode = SPI_MODE_3,
},
{
.modalias = "lis302dl",
.platform_data = &lis302_pdata[1],
.irq = GTA02_IRQ_GSENSOR_2,
- .max_speed_hz = 400 * 1000,
+ .max_speed_hz = 10 * 1000 * 1000,
.bus_num = 1,
- .chip_select = S3C2410_GPD13,
+ .chip_select = 1,
.mode = SPI_MODE_3,
},
};
-static struct s3c2410_spi_info gta02_spi_acc_cfg = {
- .set_cs = gta02_spi_acc_set_cs,
+static void spi_acc_cs(struct s3c2410_spigpio_info *spigpio_info,
+ int csid, int cs)
+{
+ struct lis302dl_platform_data * plat_data =
+ (struct lis302dl_platform_data *)spigpio_info->
+ board_info->platform_data;
+ switch (cs) {
+ case BITBANG_CS_ACTIVE:
+ s3c2410_gpio_setpin(plat_data[csid].pin_chip_select, 0);
+ break;
+ case BITBANG_CS_INACTIVE:
+ s3c2410_gpio_setpin(plat_data[csid].pin_chip_select, 1);
+ break;
+ }
+}
+
+static struct s3c2410_spigpio_info spi_gpio_cfg = {
+ .pin_clk = S3C2410_GPG7,
+ .pin_mosi = S3C2410_GPG6,
+ .pin_miso = S3C2410_GPG5,
.board_size = ARRAY_SIZE(gta02_spi_acc_bdinfo),
.board_info = gta02_spi_acc_bdinfo,
+ .chip_select = &spi_acc_cs,
+ .num_chipselect = 2,
+};
+
+static struct resource s3c_spi_acc_resource[] = {
+ [0] = {
+ .start = S3C2410_GPG3,
+ .end = S3C2410_GPG3,
+ },
+ [1] = {
+ .start = S3C2410_GPG5,
+ .end = S3C2410_GPG5,
+ },
+ [2] = {
+ .start = S3C2410_GPG6,
+ .end = S3C2410_GPG6,
+ },
+ [3] = {
+ .start = S3C2410_GPG7,
+ .end = S3C2410_GPG7,
+ },
+};
+
+static struct platform_device s3c_device_spi_acc = {
+ .name = "spi_s3c24xx_gpio",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(s3c_spi_acc_resource),
+ .resource = s3c_spi_acc_resource,
+ .dev = {
+ .platform_data = &spi_gpio_cfg,
+ },
};
static struct resource gta02_led_resources[] = {
@@ -786,10 +921,21 @@ static void __init gta02_machine_init(void)
{
int rc;
+ switch (system_rev) {
+ case GTA02v6_SYSTEM_REV:
+ /* we need push-pull interrupt from motion sensors */
+ lis302_pdata[0].open_drain = 0;
+ lis302_pdata[1].open_drain = 0;
+ break;
+ default:
+ break;
+ }
+
+ spin_lock_init(&motion_irq_lock);
+
s3c_device_usb.dev.platform_data = &gta02_usb_info;
s3c_device_nand.dev.platform_data = &gta02_nand_info;
s3c_device_sdi.dev.platform_data = &gta02_mmc_cfg;
- s3c_device_spi1.dev.platform_data = &gta02_spi_acc_cfg;
/* Only GTA02v1 has a SD_DETECT GPIO. Since the slot is not
* hot-pluggable, this is not required anyway */
@@ -801,6 +947,12 @@ static void __init gta02_machine_init(void)
break;
}
+ /* acc sensor chip selects */
+ s3c2410_gpio_setpin(S3C2410_GPD12, 1);
+ s3c2410_gpio_cfgpin(S3C2410_GPD12, S3C2410_GPIO_OUTPUT);
+ s3c2410_gpio_setpin(S3C2410_GPD13, 1);
+ s3c2410_gpio_cfgpin(S3C2410_GPD13, S3C2410_GPIO_OUTPUT);
+
INIT_WORK(&gta02_udc_vbus_drawer.work, __gta02_udc_vbus_draw);
s3c24xx_udc_set_platdata(&gta02_udc_cfg);
set_s3c2410ts_info(&gta02_ts_cfg);
@@ -829,6 +981,7 @@ static void __init gta02_machine_init(void)
break;
}
+ platform_device_register(&s3c_device_spi_acc);
platform_device_register(&gta01_button_dev);
platform_device_register(&gta01_pm_gsm_dev);
diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
index 45c41c8..36bdcf7 100644
--- a/drivers/input/misc/lis302dl.c
+++ b/drivers/input/misc/lis302dl.c
@@ -33,117 +33,26 @@
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
-#include <linux/input.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/sysfs.h>
#include <linux/lis302dl.h>
-#include <linux/spi/spi.h>
-
-#define LIS302DL_WHO_AM_I_MAGIC 0x3b
-
-enum lis302dl_reg {
- LIS302DL_REG_WHO_AM_I = 0x0f,
- LIS302DL_REG_CTRL1 = 0x20,
- LIS302DL_REG_CTRL2 = 0x21,
- LIS302DL_REG_CTRL3 = 0x22,
- LIS302DL_REG_HP_FILTER_RESET = 0x23,
- LIS302DL_REG_STATUS = 0x27,
- LIS302DL_REG_OUT_X = 0x29,
- LIS302DL_REG_OUT_Y = 0x2b,
- LIS302DL_REG_OUT_Z = 0x2d,
- LIS302DL_REG_FF_WU_CFG_1 = 0x30,
- LIS302DL_REG_FF_WU_SRC_1 = 0x31,
- LIS302DL_REG_FF_WU_THS_1 = 0x32,
- LIS302DL_REG_FF_WU_DURATION_1 = 0x33,
- LIS302DL_REG_FF_WU_CFG_2 = 0x34,
- LIS302DL_REG_FF_WU_SRC_2 = 0x35,
- LIS302DL_REG_FF_WU_THS_2 = 0x36,
- LIS302DL_REG_FF_WU_DURATION_2 = 0x37,
- LIS302DL_REG_CLICK_CFG = 0x38,
- LIS302DL_REG_CLICK_SRC = 0x39,
- LIS302DL_REG_CLICK_THSY_X = 0x3b,
- LIS302DL_REG_CLICK_THSZ = 0x3c,
- LIS302DL_REG_CLICK_TIME_LIMIT = 0x3d,
- LIS302DL_REG_CLICK_LATENCY = 0x3e,
- LIS302DL_REG_CLICK_WINDOW = 0x3f,
-};
-
-enum lis302dl_reg_ctrl1 {
- LIS302DL_CTRL1_Xen = 0x01,
- LIS302DL_CTRL1_Yen = 0x02,
- LIS302DL_CTRL1_Zen = 0x04,
- LIS302DL_CTRL1_STM = 0x08,
- LIS302DL_CTRL1_STP = 0x10,
- LIS302DL_CTRL1_FS = 0x20,
- LIS302DL_CTRL1_PD = 0x40,
- LIS302DL_CTRL1_DR = 0x80,
-};
-
-enum lis302dl_reg_ctrl3 {
- LIS302DL_CTRL3_PP_OD = 0x40,
-};
-
-enum lis302dl_reg_status {
- LIS302DL_STATUS_XDA = 0x01,
- LIS302DL_STATUS_YDA = 0x02,
- LIS302DL_STATUS_ZDA = 0x04,
- LIS302DL_STATUS_XYZDA = 0x08,
- LIS302DL_STATUS_XOR = 0x10,
- LIS302DL_STATUS_YOR = 0x20,
- LIS302DL_STATUS_ZOR = 0x40,
- LIS302DL_STATUS_XYZOR = 0x80,
-};
-
-enum lis302dl_reg_ffwusrc1 {
- LIS302DL_FFWUSRC1_XL = 0x01,
- LIS302DL_FFWUSRC1_XH = 0x02,
- LIS302DL_FFWUSRC1_YL = 0x04,
- LIS302DL_FFWUSRC1_YH = 0x08,
- LIS302DL_FFWUSRC1_ZL = 0x10,
- LIS302DL_FFWUSRC1_ZH = 0x20,
- LIS302DL_FFWUSRC1_IA = 0x40,
-};
-
-enum lis302dl_reg_cloik_src {
- LIS302DL_CLICKSRC_SINGLE_X = 0x01,
- LIS302DL_CLICKSRC_DOUBLE_X = 0x02,
- LIS302DL_CLICKSRC_SINGLE_Y = 0x04,
- LIS302DL_CLICKSRC_DOUBLE_Y = 0x08,
- LIS302DL_CLICKSRC_SINGLE_Z = 0x10,
- LIS302DL_CLICKSRC_DOUBLE_Z = 0x20,
- LIS302DL_CLICKSRC_IA = 0x40,
-};
-
-struct lis302dl_info {
- struct spi_device *spi_dev;
- struct input_dev *input_dev;
- struct mutex lock;
- struct work_struct work;
- unsigned int flags;
- unsigned int working;
- u_int8_t regs[0x40];
-};
-
-#define LIS302DL_F_WUP_FF 0x0001 /* wake up from free fall */
-#define LIS302DL_F_WUP_CLICK 0x0002
-#define LIS302DL_F_POWER 0x0010
-#define LIS302DL_F_FS 0x0020 /* ADC full scale */
-
/* lowlevel register access functions */
-#define READ_BIT 0x01
-#define MS_BIT 0x02
-#define ADDR_SHIFT 2
+#define READ_BIT 0x80
+#define READ_BIT_INC_ADS 0xc0
+#define ADDR_MASK 0x3f
-static inline u_int8_t __reg_read(struct lis302dl_info *lis, u_int8_t reg)
+static u_int8_t __reg_read(struct lis302dl_info *lis, u_int8_t reg)
{
int rc;
u_int8_t cmd;
- cmd = (reg << ADDR_SHIFT) | READ_BIT;
+ BUG_ON(reg & ~ADDR_MASK);
+
+ cmd = reg | READ_BIT;
rc = spi_w8r8(lis->spi_dev, cmd);
@@ -161,11 +70,13 @@ static u_int8_t reg_read(struct lis302dl_info *lis, u_int8_t reg)
return ret;
}
-static inline int __reg_write(struct lis302dl_info *lis, u_int8_t reg, u_int8_t val)
+static int __reg_write(struct lis302dl_info *lis, u_int8_t reg, u_int8_t val)
{
u_int8_t buf[2];
- buf[0] = (reg << ADDR_SHIFT);
+ BUG_ON(reg & ~ADDR_MASK);
+
+ buf[0] = reg;
buf[1] = val;
return spi_write(lis->spi_dev, buf, sizeof(buf));
@@ -207,10 +118,10 @@ static int reg_set_bit_mask(struct lis302dl_info *lis,
enum lis302dl_intmode {
LIS302DL_INTMODE_GND = 0x00,
LIS302DL_INTMODE_FF_WU_1 = 0x01,
- LIX302DL_INTMODE_FF_WU_2 = 0x02,
- LIX302DL_INTMODE_FF_WU_12 = 0x03,
- LIX302DL_INTMODE_DATA_READY = 0x04,
- LIX302DL_INTMODE_CLICK = 0x07,
+ LIS302DL_INTMODE_FF_WU_2 = 0x02,
+ LIS302DL_INTMODE_FF_WU_12 = 0x03,
+ LIS302DL_INTMODE_DATA_READY = 0x04,
+ LIS302DL_INTMODE_CLICK = 0x07,
};
static void lis302dl_int_mode(struct spi_device *spi, int int_pin,
@@ -218,12 +129,18 @@ static void lis302dl_int_mode(struct spi_device *spi, int int_pin,
{
struct lis302dl_info *lis = dev_get_drvdata(&spi->dev);
- if (int_pin == 1)
+ switch (int_pin) {
+ case 1:
reg_set_bit_mask(lis, LIS302DL_REG_CTRL3, 0x07, mode);
- else if (int_pin == 2)
+ break;
+ case 2:
reg_set_bit_mask(lis, LIS302DL_REG_CTRL3, 0x38, mode << 3);
+ break;
+ default:
+ BUG();
+ }
}
-
+#if 0
static void _report_btn_single(struct input_dev *inp, int btn)
{
input_report_key(inp, btn, 1);
@@ -241,95 +158,14 @@ static void _report_btn_double(struct input_dev *inp, int btn)
input_sync(inp);
input_report_key(inp, btn, 0);
}
+#endif
-static void lis302dl_work(struct work_struct *work)
-{
- struct lis302dl_info *lis =
- container_of(work, struct lis302dl_info, work);
-
- u_int8_t status, ff_wu_src_1, click_src;
- u_int8_t val;
-
- lis->working = 1;
-
- status = reg_read(lis, LIS302DL_REG_STATUS);
- ff_wu_src_1 = reg_read(lis, LIS302DL_REG_FF_WU_SRC_1);
- click_src = reg_read(lis, LIS302DL_REG_CLICK_SRC);
-
- if (status & LIS302DL_STATUS_XDA) {
- val = reg_read(lis, LIS302DL_REG_OUT_X);
- if (lis->flags & LIS302DL_F_FS)
- val = val << 2;
- input_report_rel(lis->input_dev, REL_X, val);
- }
-
- if (status & LIS302DL_STATUS_YDA) {
- val = reg_read(lis, LIS302DL_REG_OUT_Y);
- if (lis->flags & LIS302DL_F_FS)
- val = val << 2;
- input_report_rel(lis->input_dev, REL_Y, val);
- }
-
- if (status & LIS302DL_STATUS_ZDA) {
- val = reg_read(lis, LIS302DL_REG_OUT_Z);
- if (lis->flags & LIS302DL_F_FS)
- val = val << 2;
- input_report_rel(lis->input_dev, REL_Z, val);
- }
-
- if (status & 0xf0)
- dev_dbg(&lis->spi_dev->dev, "overrun!\n");
-
- /* FIXME: implement overrun statistics */
-
- if (ff_wu_src_1 & LIS302DL_FFWUSRC1_IA) {
- /* FIXME: free fall interrupt handling */
- }
-
- if (click_src & LIS302DL_CLICKSRC_IA) {
- if (click_src & LIS302DL_CLICKSRC_SINGLE_X)
- _report_btn_single(lis->input_dev, BTN_X);
- if (click_src & LIS302DL_CLICKSRC_DOUBLE_X)
- _report_btn_double(lis->input_dev, BTN_X);
-
- if (click_src & LIS302DL_CLICKSRC_SINGLE_Y)
- _report_btn_single(lis->input_dev, BTN_Y);
- if (click_src & LIS302DL_CLICKSRC_DOUBLE_Y)
- _report_btn_double(lis->input_dev, BTN_Y);
-
- if (click_src & LIS302DL_CLICKSRC_SINGLE_Z)
- _report_btn_single(lis->input_dev, BTN_Z);
- if (click_src & LIS302DL_CLICKSRC_DOUBLE_Z)
- _report_btn_double(lis->input_dev, BTN_Z);
- }
-
- lis->working = 0;
- input_sync(lis->input_dev);
- put_device(&lis->spi_dev->dev);
-
- enable_irq(lis->spi_dev->irq);
-}
-
-static void lis302dl_schedule_work(struct lis302dl_info *lis)
-{
- int status;
-
- get_device(&lis->spi_dev->dev);
- status = schedule_work(&lis->work);
- if (!status && !lis->working)
- dev_dbg(&lis->spi_dev->dev, "work item may be lost\n");
-}
static irqreturn_t lis302dl_interrupt(int irq, void *_lis)
{
struct lis302dl_info *lis = _lis;
- lis302dl_schedule_work(lis);
-
- /* Disable any further interrupts until we have processed
- * the current one */
- disable_irq(lis->spi_dev->irq);
-
+ (lis->pdata->lis302dl_bitbang_read)(lis);
return IRQ_HANDLED;
}
@@ -388,6 +224,7 @@ static DEVICE_ATTR(full_scale, S_IRUGO | S_IWUSR, show_scale, set_scale);
static struct attribute *lis302dl_sysfs_entries[] = {
&dev_attr_sample_rate.attr,
&dev_attr_full_scale.attr,
+ NULL
};
static struct attribute_group lis302dl_attr_group = {
@@ -402,9 +239,16 @@ static int lis302dl_input_open(struct input_dev *inp)
struct lis302dl_info *lis = inp->private;
u_int8_t ctrl1 = LIS302DL_CTRL1_PD | LIS302DL_CTRL1_Xen |
LIS302DL_CTRL1_Yen | LIS302DL_CTRL1_Zen;
+ unsigned long flags;
+ local_save_flags(flags);
/* make sure we're powered up and generate data ready */
reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, ctrl1, ctrl1);
+ local_irq_restore(flags);
+
+ /* kick it off -- since we are edge triggered, if we missed the edge
+ * permanent low interrupt is death for us */
+ (lis->pdata->lis302dl_bitbang_read)(lis);
return 0;
}
@@ -414,9 +258,12 @@ static void lis302dl_input_close(struct input_dev *inp)
struct lis302dl_info *lis = inp->private;
u_int8_t ctrl1 = LIS302DL_CTRL1_Xen | LIS302DL_CTRL1_Yen |
LIS302DL_CTRL1_Zen;
+ unsigned long flags;
+
+ local_save_flags(flags);
/* since the input core already serializes access and makes sure we
- * only see close() for the close of the lastre user, we can safely
+ * only see close() for the close of the last user, we can safely
* disable the data ready events */
reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, ctrl1, 0x00);
@@ -426,6 +273,7 @@ static void lis302dl_input_close(struct input_dev *inp)
reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_PD,
0x00);
}
+ local_irq_restore(flags);
}
static int __devinit lis302dl_probe(struct spi_device *spi)
@@ -433,84 +281,138 @@ static int __devinit lis302dl_probe(struct spi_device *spi)
int rc;
struct lis302dl_info *lis;
u_int8_t wai;
+ unsigned long flags;
+ struct lis302dl_platform_data *pdata;
lis = kzalloc(sizeof(*lis), GFP_KERNEL);
if (!lis)
return -ENOMEM;
+ local_save_flags(flags);
+
mutex_init(&lis->lock);
- INIT_WORK(&lis->work, lis302dl_work);
lis->spi_dev = spi;
spi_set_drvdata(spi, lis);
+ pdata = spi->dev.platform_data;
+
rc = spi_setup(spi);
if (rc < 0) {
- printk(KERN_ERR "error durign spi_setup of lis302dl driver\n");
+ dev_err(&spi->dev, "error during spi_setup\n");
dev_set_drvdata(&spi->dev, NULL);
- kfree(lis);
- return rc;
+ goto bail_free_lis;
}
wai = reg_read(lis, LIS302DL_REG_WHO_AM_I);
if (wai != LIS302DL_WHO_AM_I_MAGIC) {
- printk(KERN_ERR "unknown who_am_i signature 0x%02x\n", wai);
+ dev_err(&spi->dev, "unknown who_am_i signature 0x%02x\n", wai);
dev_set_drvdata(&spi->dev, NULL);
- kfree(lis);
- return -ENODEV;
- }
-
- /* switch interrupt to open collector */
- reg_write(lis, LIS302DL_CTRL3_PP_OD, 0x7c);
-
- rc = request_irq(lis->spi_dev->irq, lis302dl_interrupt, IRQF_DISABLED,
- "lis302dl", NULL);
- if (rc < 0) {
- dev_err(&spi->dev, "error requesting IRQ %d\n",
- lis->spi_dev->irq);
- /* FIXME */
- return rc;
+ rc = -ENODEV;
+ goto bail_free_lis;
}
rc = sysfs_create_group(&spi->dev.kobj, &lis302dl_attr_group);
if (rc) {
dev_err(&spi->dev, "error creating sysfs group\n");
- /* FIXME */
- return rc;
+ goto bail_free_lis;
}
/* initialize input layer details */
lis->input_dev = input_allocate_device();
if (!lis->input_dev) {
dev_err(&spi->dev, "Unable to allocate input device\n");
- /* FIXME */
+ goto bail_sysfs;
}
set_bit(EV_REL, lis->input_dev->evbit);
- set_bit(EV_KEY, lis->input_dev->evbit);
+ set_bit(REL_X, lis->input_dev->relbit);
+ set_bit(REL_Y, lis->input_dev->relbit);
+ set_bit(REL_Z, lis->input_dev->relbit);
+/* set_bit(EV_KEY, lis->input_dev->evbit);
set_bit(BTN_X, lis->input_dev->keybit);
set_bit(BTN_Y, lis->input_dev->keybit);
set_bit(BTN_Z, lis->input_dev->keybit);
-
+*/
lis->input_dev->private = lis;
- lis->input_dev->name = "lis302dl"; /* FIXME: platform data */
- lis->input_dev->id.bustype = BUS_I2C; /* FIXME: SPI Bus */
+ lis->input_dev->name = pdata->name;
+ /* SPI Bus not defined as a valid bus for input subsystem*/
+ lis->input_dev->id.bustype = BUS_I2C; /* lie about it */
lis->input_dev->open = lis302dl_input_open;
lis->input_dev->close = lis302dl_input_close;
- input_register_device(lis->input_dev);
+ rc = input_register_device(lis->input_dev);
+ if (rc) {
+ dev_err(&spi->dev, "error %d registering input device\n", rc);
+ goto bail_inp_dev;
+ }
+
+ reg_write(lis, LIS302DL_REG_CTRL1, 0x47);
+ reg_write(lis, LIS302DL_REG_CTRL3, 0xc0);
+ reg_write(lis, LIS302DL_REG_FF_WU_THS_1, 0x14);
+ reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1, 0x00);
+ reg_write(lis, LIS302DL_REG_FF_WU_CFG_1, 0x95);
+
+ reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_Xen |
+ LIS302DL_CTRL1_Yen |
+ LIS302DL_CTRL1_Zen);
+
+ if (pdata->open_drain)
+ /* switch interrupt to open collector, active-low */
+ reg_write(lis, LIS302DL_REG_CTRL3, LIS302DL_CTRL3_PP_OD |
+ LIS302DL_CTRL3_IHL);
+ else
+ /* push-pull, active-low */
+ reg_write(lis, LIS302DL_REG_CTRL3, LIS302DL_CTRL3_IHL);
+
+ lis302dl_int_mode(spi, 1, LIS302DL_INTMODE_DATA_READY);
+ lis302dl_int_mode(spi, 2, LIS302DL_INTMODE_DATA_READY);
+
+ reg_read(lis, LIS302DL_REG_STATUS);
+ reg_read(lis, LIS302DL_REG_FF_WU_SRC_1);
+ reg_read(lis, LIS302DL_REG_FF_WU_SRC_2);
+ reg_read(lis, LIS302DL_REG_CLICK_SRC);
+ dev_info(&spi->dev, "Found %s\n", pdata->name);
+
+ lis->pdata = pdata;
+
+ rc = request_irq(lis->spi_dev->irq, lis302dl_interrupt,
+ IRQF_TRIGGER_FALLING, "lis302dl", lis);
+ if (rc < 0) {
+ dev_err(&spi->dev, "error requesting IRQ %d\n",
+ lis->spi_dev->irq);
+ goto bail_inp_reg;
+ }
+ local_irq_restore(flags);
return 0;
+
+bail_inp_reg:
+ input_unregister_device(lis->input_dev);
+bail_inp_dev:
+ input_free_device(lis->input_dev);
+bail_sysfs:
+ sysfs_remove_group(&spi->dev.kobj, &lis302dl_attr_group);
+bail_free_lis:
+ kfree(lis);
+ local_irq_restore(flags);
+ return rc;
}
static int __devexit lis302dl_remove(struct spi_device *spi)
{
struct lis302dl_info *lis = dev_get_drvdata(&spi->dev);
+ unsigned long flags;
/* power down the device */
+ local_save_flags(flags);
reg_write(lis, LIS302DL_REG_CTRL1, 0x00);
+ local_irq_restore(flags);
+
sysfs_remove_group(&spi->dev.kobj, &lis302dl_attr_group);
input_unregister_device(lis->input_dev);
+ if (lis->input_dev)
+ input_free_device(lis->input_dev);
dev_set_drvdata(&spi->dev, NULL);
kfree(lis);
@@ -521,6 +423,10 @@ static int __devexit lis302dl_remove(struct spi_device *spi)
static int lis302dl_suspend(struct spi_device *spi, pm_message_t state)
{
struct lis302dl_info *lis = dev_get_drvdata(&spi->dev);
+ unsigned long flags;
+
+ disable_irq(lis->spi_dev->irq);
+ local_save_flags(flags);
/* save registers */
lis->regs[LIS302DL_REG_CTRL1] = reg_read(lis, LIS302DL_REG_CTRL1);
@@ -561,12 +467,17 @@ static int lis302dl_suspend(struct spi_device *spi, pm_message_t state)
reg_write(lis, LIS302DL_REG_CTRL1, tmp);
}
+ local_irq_restore(flags);
+
return 0;
}
static int lis302dl_resume(struct spi_device *spi)
{
struct lis302dl_info *lis = dev_get_drvdata(&spi->dev);
+ unsigned long flags;
+
+ local_save_flags(flags);
/* restore registers after resume */
reg_write(lis, LIS302DL_REG_CTRL1, lis->regs[LIS302DL_REG_CTRL1]);
@@ -597,6 +508,9 @@ static int lis302dl_resume(struct spi_device *spi)
reg_write(lis, LIS302DL_REG_CLICK_WINDOW,
lis->regs[LIS302DL_REG_CLICK_WINDOW]);
+ local_irq_restore(flags);
+ enable_irq(lis->spi_dev->irq);
+
return 0;
}
#else
diff --git a/drivers/spi/spi_s3c24xx_gpio.c b/drivers/spi/spi_s3c24xx_gpio.c
index e33f614..ccadf35 100644
--- a/drivers/spi/spi_s3c24xx_gpio.c
+++ b/drivers/spi/spi_s3c24xx_gpio.c
@@ -91,7 +91,7 @@ static void s3c2410_spigpio_chipselect(struct spi_device *dev, int value)
struct s3c2410_spigpio *sg = spidev_to_sg(dev);
if (sg->info && sg->info->chip_select)
- (sg->info->chip_select)(sg->info, value);
+ (sg->info->chip_select)(sg->info, dev->chip_select, value);
}
static int s3c2410_spigpio_probe(struct platform_device *dev)
@@ -100,6 +100,7 @@ static int s3c2410_spigpio_probe(struct platform_device *dev)
struct spi_master *master;
struct s3c2410_spigpio *sp;
int ret;
+ int i;
master = spi_alloc_master(&dev->dev, sizeof(struct s3c2410_spigpio));
if (master == NULL) {
@@ -112,9 +113,11 @@ static int s3c2410_spigpio_probe(struct platform_device *dev)
platform_set_drvdata(dev, sp);
- /* copy in the plkatform data */
+ /* copy in the platform data */
info = sp->info = dev->dev.platform_data;
+ master->num_chipselect = info->num_chipselect;
+
/* setup spi bitbang adaptor */
sp->bitbang.master = spi_master_get(master);
sp->bitbang.master->bus_num = info->bus_num;
@@ -142,6 +145,22 @@ static int s3c2410_spigpio_probe(struct platform_device *dev)
if (ret)
goto err_no_bitbang;
+ /* register the chips to go with the board */
+
+ for (i = 0; i < sp->info->board_size; i++) {
+ struct spi_device *spidev;
+
+ dev_info(&dev->dev, "registering %p: %s\n",
+ &sp->info->board_info[i],
+ sp->info->board_info[i].modalias);
+
+ sp->info->board_info[i].controller_data = sp;
+ spidev = spi_new_device(master, sp->info->board_info + i);
+ if (spidev)
+ spidev->max_speed_hz =
+ sp->info->board_info[i].max_speed_hz;
+ }
+
return 0;
err_no_bitbang:
diff --git a/include/asm-arm/arch-s3c2410/spi-gpio.h b/include/asm-arm/arch-s3c2410/spi-gpio.h
index 7380373..d4efc97 100644
--- a/include/asm-arm/arch-s3c2410/spi-gpio.h
+++ b/include/asm-arm/arch-s3c2410/spi-gpio.h
@@ -19,8 +19,12 @@ struct s3c2410_spigpio_info {
unsigned long pin_miso;
int bus_num;
+ int num_chipselect;
- void (*chip_select)(struct s3c2410_spigpio_info *spi, int cs);
+ unsigned long board_size;
+ struct spi_board_info *board_info;
+
+ void (*chip_select)(struct s3c2410_spigpio_info *spi, int csid, int cs);
};
diff --git a/include/linux/lis302dl.h b/include/linux/lis302dl.h
index d0f31be..2dea813 100644
--- a/include/linux/lis302dl.h
+++ b/include/linux/lis302dl.h
@@ -2,10 +2,112 @@
#define _LINUX_LIS302DL_H
#include <linux/types.h>
+#include <linux/spi/spi.h>
+#include <linux/input.h>
+
+
+struct lis302dl_info;
struct lis302dl_platform_data {
char *name;
+ unsigned long pin_chip_select;
+ unsigned long pin_clk;
+ unsigned long pin_mosi;
+ unsigned long pin_miso;
+ int open_drain;
+ void (*lis302dl_bitbang_read)(struct lis302dl_info *);
+};
+
+struct lis302dl_info {
+ struct lis302dl_platform_data *pdata;
+ struct spi_device *spi_dev;
+ struct input_dev *input_dev;
+ struct mutex lock;
+ unsigned int flags;
+ u_int8_t regs[0x40];
+};
+
+enum lis302dl_reg {
+ LIS302DL_REG_WHO_AM_I = 0x0f,
+ LIS302DL_REG_CTRL1 = 0x20,
+ LIS302DL_REG_CTRL2 = 0x21,
+ LIS302DL_REG_CTRL3 = 0x22,
+ LIS302DL_REG_HP_FILTER_RESET = 0x23,
+ LIS302DL_REG_STATUS = 0x27,
+ LIS302DL_REG_OUT_X = 0x29,
+ LIS302DL_REG_OUT_Y = 0x2b,
+ LIS302DL_REG_OUT_Z = 0x2d,
+ LIS302DL_REG_FF_WU_CFG_1 = 0x30,
+ LIS302DL_REG_FF_WU_SRC_1 = 0x31,
+ LIS302DL_REG_FF_WU_THS_1 = 0x32,
+ LIS302DL_REG_FF_WU_DURATION_1 = 0x33,
+ LIS302DL_REG_FF_WU_CFG_2 = 0x34,
+ LIS302DL_REG_FF_WU_SRC_2 = 0x35,
+ LIS302DL_REG_FF_WU_THS_2 = 0x36,
+ LIS302DL_REG_FF_WU_DURATION_2 = 0x37,
+ LIS302DL_REG_CLICK_CFG = 0x38,
+ LIS302DL_REG_CLICK_SRC = 0x39,
+ LIS302DL_REG_CLICK_THSY_X = 0x3b,
+ LIS302DL_REG_CLICK_THSZ = 0x3c,
+ LIS302DL_REG_CLICK_TIME_LIMIT = 0x3d,
+ LIS302DL_REG_CLICK_LATENCY = 0x3e,
+ LIS302DL_REG_CLICK_WINDOW = 0x3f,
+};
+
+enum lis302dl_reg_ctrl1 {
+ LIS302DL_CTRL1_Xen = 0x01,
+ LIS302DL_CTRL1_Yen = 0x02,
+ LIS302DL_CTRL1_Zen = 0x04,
+ LIS302DL_CTRL1_STM = 0x08,
+ LIS302DL_CTRL1_STP = 0x10,
+ LIS302DL_CTRL1_FS = 0x20,
+ LIS302DL_CTRL1_PD = 0x40,
+ LIS302DL_CTRL1_DR = 0x80,
+};
+
+enum lis302dl_reg_ctrl3 {
+ LIS302DL_CTRL3_PP_OD = 0x40,
+ LIS302DL_CTRL3_IHL = 0x80,
};
+enum lis302dl_reg_status {
+ LIS302DL_STATUS_XDA = 0x01,
+ LIS302DL_STATUS_YDA = 0x02,
+ LIS302DL_STATUS_ZDA = 0x04,
+ LIS302DL_STATUS_XYZDA = 0x08,
+ LIS302DL_STATUS_XOR = 0x10,
+ LIS302DL_STATUS_YOR = 0x20,
+ LIS302DL_STATUS_ZOR = 0x40,
+ LIS302DL_STATUS_XYZOR = 0x80,
+};
+
+enum lis302dl_reg_ffwusrc1 {
+ LIS302DL_FFWUSRC1_XL = 0x01,
+ LIS302DL_FFWUSRC1_XH = 0x02,
+ LIS302DL_FFWUSRC1_YL = 0x04,
+ LIS302DL_FFWUSRC1_YH = 0x08,
+ LIS302DL_FFWUSRC1_ZL = 0x10,
+ LIS302DL_FFWUSRC1_ZH = 0x20,
+ LIS302DL_FFWUSRC1_IA = 0x40,
+};
+
+enum lis302dl_reg_cloik_src {
+ LIS302DL_CLICKSRC_SINGLE_X = 0x01,
+ LIS302DL_CLICKSRC_DOUBLE_X = 0x02,
+ LIS302DL_CLICKSRC_SINGLE_Y = 0x04,
+ LIS302DL_CLICKSRC_DOUBLE_Y = 0x08,
+ LIS302DL_CLICKSRC_SINGLE_Z = 0x10,
+ LIS302DL_CLICKSRC_DOUBLE_Z = 0x20,
+ LIS302DL_CLICKSRC_IA = 0x40,
+};
+
+#define LIS302DL_WHO_AM_I_MAGIC 0x3b
+
+#define LIS302DL_F_WUP_FF 0x0001 /* wake up from free fall */
+#define LIS302DL_F_WUP_CLICK 0x0002
+#define LIS302DL_F_POWER 0x0010
+#define LIS302DL_F_FS 0x0020 /* ADC full scale */
+
+
#endif /* _LINUX_LIS302DL_H */
--
1.5.6.3
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