-Atmel AT25 eeprom
+EEPROMs (SPI) compatible with Atmel at25.
Required properties:
- compatible : "atmel,at25".
- reg : chip select number
- spi-max-frequency : max spi frequency to use
+- pagesize : size of the eeprom page
+- size : total eeprom size in bytes
+- address-width : number of address bits (one of 8, 16, or 24)
+Optional properties:
+- spi-cpha : SPI shifted clock phase, as per spi-bus bindings.
+- spi-cpol : SPI inverse clock polarity, as per spi-bus bindings.
+- read-only : this parameter-less property disables writes to the eeprom
+
+Obsolete legacy properties are can be used in place of "size", "pagesize",
+"address-width", and "read-only":
- at25,byte-len : total eeprom size in bytes
- at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h
- at25,page-size : size of the eeprom page
-Examples:
-at25@0 {
- compatible = "atmel,at25";
- reg = <0>
- spi-max-frequency = <5000000>;
+Additional compatible properties are also allowed.
+
+Example:
+ at25@0 {
+ compatible = "atmel,at25", "st,m95256";
+ reg = <0>
+ spi-max-frequency = <5000000>;
+ spi-cpha;
+ spi-cpol;
- at25,byte-len = <0x8000>;
- at25,addr-mode = <2>;
- at25,page-size = <64>;
-};
+ pagesize = <64>;
+ size = <32768>;
+ address-width = <16>;
+ };
--- /dev/null
+w1-gpio devicetree bindings
+
+Required properties:
+
+ - compatible: "w1-gpio"
+ - gpios: one or two GPIO specs:
+ - the first one is used as data I/O pin
+ - the second one is optional. If specified, it is used as
+ enable pin for an external pin pullup.
+
+Optional properties:
+
+ - linux,open-drain: if specified, the data pin is considered in
+ open-drain mode.
+
+Examples:
+
+ onewire@0 {
+ compatible = "w1-gpio";
+ gpios = <&gpio 126 0>, <&gpio 105 0>;
+ };
+
Supported chips:
* STMicroelectronics LIS3LV02DL, LIS3LV02DQ (12 bits precision)
- * STMicroelectronics LIS302DL, LIS3L02DQ, LIS331DL (8 bits)
+ * STMicroelectronics LIS302DL, LIS3L02DQ, LIS331DL (8 bits) and
+ LIS331DLH (16 bits)
Authors:
Yan Burman <burman.yan@gmail.com>
err = PTR_ERR(ppdev_class);
goto out_chrdev;
}
- if (parport_register_driver(&pp_driver)) {
+ err = parport_register_driver(&pp_driver);
+ if (err < 0) {
printk (KERN_WARNING CHRDEV ": unable to register with parport\n");
goto out_class;
}
}
tlclk_major = ret;
alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL);
- if (!alarm_events)
+ if (!alarm_events) {
+ ret = -ENOMEM;
goto out1;
+ }
/* Read telecom clock IRQ number (Set by BIOS) */
if (!request_region(TLCLK_BASE, 8, "telco_clock")) {
return bmp085_remove(&client->dev);
}
-static const struct of_device_id bmp085_of_match[] = {
- { .compatible = "bosch,bmp085", },
- { },
-};
-MODULE_DEVICE_TABLE(of, bmp085_of_match);
-
static const struct i2c_device_id bmp085_id[] = {
{ BMP085_NAME, 0 },
{ "bmp180", 0 },
.driver = {
.owner = THIS_MODULE,
.name = BMP085_NAME,
- .of_match_table = bmp085_of_match
},
.id_table = bmp085_id,
.probe = bmp085_i2c_probe,
.remove = __devexit_p(bmp085_spi_remove)
};
-static int __init bmp085_spi_init(void)
-{
- return spi_register_driver(&bmp085_spi_driver);
-}
-
-static void __exit bmp085_spi_exit(void)
-{
- spi_unregister_driver(&bmp085_spi_driver);
-}
+module_spi_driver(bmp085_spi_driver);
MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
MODULE_DESCRIPTION("BMP085 SPI bus driver");
MODULE_LICENSE("GPL");
-
-module_init(bmp085_spi_init);
-module_exit(bmp085_spi_exit);
dev_set_drvdata(priv->dev, priv);
dma_cap_zero(mask);
dma_cap_set(DMA_MEMCPY, mask);
- dma_cap_set(DMA_INTERRUPT, mask);
dma_cap_set(DMA_SLAVE, mask);
dma_cap_set(DMA_SG, mask);
src = SYS_FPGA_BLOCK;
tx = chan->device->device_prep_dma_memcpy(chan, dst, src,
REG_BLOCK_SIZE,
- DMA_PREP_INTERRUPT);
+ 0);
if (!tx) {
dev_err(priv->dev, "unable to prep SYS-FPGA DMA\n");
return -ENOMEM;
/*-------------------------------------------------------------------------*/
+static int at25_np_to_chip(struct device *dev,
+ struct device_node *np,
+ struct spi_eeprom *chip)
+{
+ u32 val;
+
+ memset(chip, 0, sizeof(*chip));
+ strncpy(chip->name, np->name, sizeof(chip->name));
+
+ if (of_property_read_u32(np, "size", &val) == 0 ||
+ of_property_read_u32(np, "at25,byte-len", &val) == 0) {
+ chip->byte_len = val;
+ } else {
+ dev_err(dev, "Error: missing \"size\" property\n");
+ return -ENODEV;
+ }
+
+ if (of_property_read_u32(np, "pagesize", &val) == 0 ||
+ of_property_read_u32(np, "at25,page-size", &val) == 0) {
+ chip->page_size = (u16)val;
+ } else {
+ dev_err(dev, "Error: missing \"pagesize\" property\n");
+ return -ENODEV;
+ }
+
+ if (of_property_read_u32(np, "at25,addr-mode", &val) == 0) {
+ chip->flags = (u16)val;
+ } else {
+ if (of_property_read_u32(np, "address-width", &val)) {
+ dev_err(dev,
+ "Error: missing \"address-width\" property\n");
+ return -ENODEV;
+ }
+ switch (val) {
+ case 8:
+ chip->flags |= EE_ADDR1;
+ break;
+ case 16:
+ chip->flags |= EE_ADDR2;
+ break;
+ case 24:
+ chip->flags |= EE_ADDR3;
+ break;
+ default:
+ dev_err(dev,
+ "Error: bad \"address-width\" property: %u\n",
+ val);
+ return -ENODEV;
+ }
+ if (of_find_property(np, "read-only", NULL))
+ chip->flags |= EE_READONLY;
+ }
+ return 0;
+}
+
static int at25_probe(struct spi_device *spi)
{
struct at25_data *at25 = NULL;
/* Chip description */
if (!spi->dev.platform_data) {
if (np) {
- u32 val;
-
- memset(&chip, 0, sizeof(chip));
- strncpy(chip.name, np->name, 10);
-
- err = of_property_read_u32(np, "at25,byte-len", &val);
- if (err) {
- dev_dbg(&spi->dev, "invalid chip dt description\n");
- goto fail;
- }
- chip.byte_len = val;
-
- err = of_property_read_u32(np, "at25,addr-mode", &val);
- if (err) {
- dev_dbg(&spi->dev, "invalid chip dt description\n");
- goto fail;
- }
- chip.flags = (u16)val;
-
- err = of_property_read_u32(np, "at25,page-size", &val);
- if (err) {
- dev_dbg(&spi->dev, "invalid chip dt description\n");
+ err = at25_np_to_chip(&spi->dev, np, &chip);
+ if (err)
goto fail;
- }
- chip.page_size = (u16)val;
} else {
- dev_dbg(&spi->dev, "no chip description\n");
+ dev_err(&spi->dev, "Error: no chip description\n");
err = -ENODEV;
goto fail;
}
#define LIS3_SENSITIVITY_12B ((LIS3_ACCURACY * 1000) / 1024)
#define LIS3_SENSITIVITY_8B (18 * LIS3_ACCURACY)
+/*
+ * LIS3331DLH spec says 1LSBs corresponds 4G/1024 -> 1LSB is 1000/1024 mG.
+ * Sensitivity values for +/-2G, outdata in 12 bits for +/-2G scale. so 4
+ * bits adjustment is required
+ */
+#define LIS3DLH_SENSITIVITY_2G ((LIS3_ACCURACY * 1000) / 1024)
+#define SHIFT_ADJ_2G 4
+
#define LIS3_DEFAULT_FUZZ_12B 3
#define LIS3_DEFAULT_FLAT_12B 3
#define LIS3_DEFAULT_FUZZ_8B 1
return (s16)((hi << 8) | lo);
}
+/* 12bits for 2G range, 13 bits for 4G range and 14 bits for 8G range */
+static s16 lis3lv02d_read_16(struct lis3lv02d *lis3, int reg)
+{
+ u8 lo, hi;
+ int v;
+
+ lis3->read(lis3, reg - 1, &lo);
+ lis3->read(lis3, reg, &hi);
+ v = (int) ((hi << 8) | lo);
+
+ return (s16) v >> lis3->shift_adj;
+}
+
/**
* lis3lv02d_get_axis - For the given axis, give the value converted
* @axis: 1,2,3 - can also be negative
static int lis3_12_rates[4] = {40, 160, 640, 2560};
static int lis3_8_rates[2] = {100, 400};
static int lis3_3dc_rates[16] = {0, 1, 10, 25, 50, 100, 200, 400, 1600, 5000};
+static int lis3_3dlh_rates[4] = {50, 100, 400, 1000};
/* ODR is Output Data Rate */
static int lis3lv02d_get_odr(struct lis3lv02d *lis3)
(LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY));
}
- if (lis3->whoami == WAI_3DC) {
+ if ((lis3->whoami == WAI_3DC) || (lis3->whoami == WAI_3DLH)) {
ctlreg = CTRL_REG4;
selftest = CTRL4_ST0;
} else {
lis3->read(lis3, CTRL_REG2, ®);
if (lis3->whoami == WAI_12B)
reg |= CTRL2_BDU | CTRL2_BOOT;
+ else if (lis3->whoami == WAI_3DLH)
+ reg |= CTRL2_BOOT_3DLH;
else
reg |= CTRL2_BOOT_8B;
lis3->write(lis3, CTRL_REG2, reg);
+
+ if (lis3->whoami == WAI_3DLH) {
+ lis3->read(lis3, CTRL_REG4, ®);
+ reg |= CTRL4_BDU;
+ lis3->write(lis3, CTRL_REG4, reg);
+ }
}
err = lis3lv02d_get_pwron_wait(lis3);
lis3->odr_mask = CTRL1_ODR0|CTRL1_ODR1|CTRL1_ODR2|CTRL1_ODR3;
lis3->scale = LIS3_SENSITIVITY_8B;
break;
+ case WAI_3DLH:
+ pr_info("16 bits 3DLH sensor found\n");
+ lis3->read_data = lis3lv02d_read_16;
+ lis3->mdps_max_val = 2048; /* 12 bits for 2G */
+ lis3->shift_adj = SHIFT_ADJ_2G;
+ lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
+ lis3->odrs = lis3_3dlh_rates;
+ lis3->odr_mask = CTRL1_DR0 | CTRL1_DR1;
+ lis3->scale = LIS3DLH_SENSITIVITY_2G;
+ break;
default:
pr_err("unknown sensor type 0x%X\n", lis3->whoami);
return -EINVAL;
/*
* This driver tries to support the "digital" accelerometer chips from
* STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
- * LIS35DE, or LIS202DL. They are very similar in terms of programming, with
- * almost the same registers. In addition to differing on physical properties,
- * they differ on the number of axes (2/3), precision (8/12 bits), and special
- * features (freefall detection, click...). Unfortunately, not all the
- * differences can be probed via a register.
- * They can be connected either via I²C or SPI.
+ * LIS331DLH, LIS35DE, or LIS202DL. They are very similar in terms of
+ * programming, with almost the same registers. In addition to differing
+ * on physical properties, they differ on the number of axes (2/3),
+ * precision (8/12 bits), and special features (freefall detection,
+ * click...). Unfortunately, not all the differences can be probed via
+ * a register. They can be connected either via I²C or SPI.
*/
#include <linux/lis3lv02d.h>
};
enum lis3_who_am_i {
+ WAI_3DLH = 0x32, /* 16 bits: LIS331DLH */
WAI_3DC = 0x33, /* 8 bits: LIS3DC, HP3DC */
WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
};
+enum lis3_type {
+ LIS3DC,
+ HP3DC,
+ LIS3LV02D,
+ LIS2302D,
+ LIS331DLF,
+ LIS331DLH,
+};
+
enum lis3lv02d_ctrl1_12b {
CTRL1_Xen = 0x01,
CTRL1_Yen = 0x02,
CTRL1_ODR3 = 0x80,
};
+enum lis331dlh_ctrl1 {
+ CTRL1_DR0 = 0x08,
+ CTRL1_DR1 = 0x10,
+ CTRL1_PM0 = 0x20,
+ CTRL1_PM1 = 0x40,
+ CTRL1_PM2 = 0x80,
+};
+
+enum lis331dlh_ctrl2 {
+ CTRL2_HPEN1 = 0x04,
+ CTRL2_HPEN2 = 0x08,
+ CTRL2_FDS_3DLH = 0x10,
+ CTRL2_BOOT_3DLH = 0x80,
+};
+
+enum lis331dlh_ctrl4 {
+ CTRL4_STSIGN = 0x08,
+ CTRL4_BLE = 0x40,
+ CTRL4_BDU = 0x80,
+};
+
enum lis3lv02d_ctrl2 {
CTRL2_DAS = 0x01,
CTRL2_SIM = 0x02,
int data_ready_count[2];
atomic_t wake_thread;
unsigned char irq_cfg;
+ unsigned int shift_adj;
struct lis3lv02d_platform_data *pdata; /* for passing board config */
struct mutex mutex; /* Serialize poll and selftest */
if (ret < 0)
return ret;
- reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
+ if (lis3->whoami == WAI_3DLH)
+ reg |= CTRL1_PM0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
+ else
+ reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
+
return lis3->write(lis3, CTRL_REG1, reg);
}
static const struct i2c_device_id lis3lv02d_id[] = {
{"lis3lv02d", 0 },
+ {"lis331dlh", LIS331DLH},
{}
};
/*
* MEI device IDs
*/
-#define MEI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */
-#define MEI_DEV_ID_82G35 0x2984 /* 82G35 Express */
-#define MEI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */
-#define MEI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */
-
-#define MEI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */
-#define MEI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */
-
-#define MEI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */
-#define MEI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */
-#define MEI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */
-#define MEI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */
-#define MEI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */
-
-#define MEI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */
-
-#define MEI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */
-#define MEI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */
-#define MEI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */
-#define MEI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */
-
-#define MEI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */
-#define MEI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */
-#define MEI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */
-#define MEI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */
-
-#define MEI_DEV_ID_IBXPK_1 0x3B64 /* Calpella */
-#define MEI_DEV_ID_IBXPK_2 0x3B65 /* Calpella */
-
-#define MEI_DEV_ID_CPT_1 0x1C3A /* Cougerpoint */
-#define MEI_DEV_ID_PBG_1 0x1D3A /* PBG */
-
-#define MEI_DEV_ID_PPT_1 0x1E3A /* Pantherpoint PPT */
-#define MEI_DEV_ID_PPT_2 0x1CBA /* Pantherpoint PPT */
-#define MEI_DEV_ID_PPT_3 0x1DBA /* Pantherpoint PPT */
-
-
+#define MEI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */
+#define MEI_DEV_ID_82G35 0x2984 /* 82G35 Express */
+#define MEI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */
+#define MEI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */
+
+#define MEI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */
+#define MEI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */
+
+#define MEI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */
+#define MEI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */
+#define MEI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */
+#define MEI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */
+#define MEI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */
+
+#define MEI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */
+
+#define MEI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */
+#define MEI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */
+#define MEI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */
+#define MEI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */
+
+#define MEI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */
+#define MEI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */
+#define MEI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */
+#define MEI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */
+
+#define MEI_DEV_ID_IBXPK_1 0x3B64 /* Calpella */
+#define MEI_DEV_ID_IBXPK_2 0x3B65 /* Calpella */
+
+#define MEI_DEV_ID_CPT_1 0x1C3A /* Couger Point */
+#define MEI_DEV_ID_PBG_1 0x1D3A /* C600/X79 Patsburg */
+
+#define MEI_DEV_ID_PPT_1 0x1E3A /* Panther Point */
+#define MEI_DEV_ID_PPT_2 0x1CBA /* Panther Point */
+#define MEI_DEV_ID_PPT_3 0x1DBA /* Panther Point */
+
+#define MEI_DEV_ID_LPT 0x8C3A /* Lynx Point */
+#define MEI_DEV_ID_LPT_LP 0x9C3A /* Lynx Point LP */
/*
* MEI HW Section
*/
#include "interface.h"
#include <linux/mei.h>
+const char *mei_dev_state_str(int state)
+{
+#define MEI_DEV_STATE(state) case MEI_DEV_##state: return #state
+ switch (state) {
+ MEI_DEV_STATE(INITIALIZING);
+ MEI_DEV_STATE(INIT_CLIENTS);
+ MEI_DEV_STATE(ENABLED);
+ MEI_DEV_STATE(RESETING);
+ MEI_DEV_STATE(DISABLED);
+ MEI_DEV_STATE(RECOVERING_FROM_RESET);
+ MEI_DEV_STATE(POWER_DOWN);
+ MEI_DEV_STATE(POWER_UP);
+ default:
+ return "unkown";
+ }
+#undef MEI_DEV_STATE
+}
+
+
const uuid_le mei_amthi_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, 0xac,
0xa8, 0x46, 0xe0, 0xff, 0x65,
0x81, 0x4c);
mutex_init(&dev->device_lock);
init_waitqueue_head(&dev->wait_recvd_msg);
init_waitqueue_head(&dev->wait_stop_wd);
- dev->mei_state = MEI_INITIALIZING;
+ dev->dev_state = MEI_DEV_INITIALIZING;
dev->iamthif_state = MEI_IAMTHIF_IDLE;
dev->wd_interface_reg = false;
}
if (err <= 0 && !dev->recvd_msg) {
- dev->mei_state = MEI_DISABLED;
+ dev->dev_state = MEI_DEV_DISABLED;
dev_dbg(&dev->pdev->dev,
"wait_event_interruptible_timeout failed"
"on wait for ME to turn on ME_RDY.\n");
if (!(((dev->host_hw_state & H_RDY) == H_RDY) &&
((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA))) {
- dev->mei_state = MEI_DISABLED;
+ dev->dev_state = MEI_DEV_DISABLED;
dev_dbg(&dev->pdev->dev,
"host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n",
dev->host_hw_state, dev->me_hw_state);
struct mei_cl_cb *cb_next = NULL;
bool unexpected;
- if (dev->mei_state == MEI_RECOVERING_FROM_RESET) {
+ if (dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) {
dev->need_reset = true;
return;
}
- unexpected = (dev->mei_state != MEI_INITIALIZING &&
- dev->mei_state != MEI_DISABLED &&
- dev->mei_state != MEI_POWER_DOWN &&
- dev->mei_state != MEI_POWER_UP);
+ unexpected = (dev->dev_state != MEI_DEV_INITIALIZING &&
+ dev->dev_state != MEI_DEV_DISABLED &&
+ dev->dev_state != MEI_DEV_POWER_DOWN &&
+ dev->dev_state != MEI_DEV_POWER_UP);
dev->host_hw_state = mei_hcsr_read(dev);
dev->need_reset = false;
- if (dev->mei_state != MEI_INITIALIZING) {
- if (dev->mei_state != MEI_DISABLED &&
- dev->mei_state != MEI_POWER_DOWN)
- dev->mei_state = MEI_RESETING;
+ if (dev->dev_state != MEI_DEV_INITIALIZING) {
+ if (dev->dev_state != MEI_DEV_DISABLED &&
+ dev->dev_state != MEI_DEV_POWER_DOWN)
+ dev->dev_state = MEI_DEV_RESETING;
list_for_each_entry_safe(cl_pos,
cl_next, &dev->file_list, link) {
dev->me_clients_num = 0;
dev->rd_msg_hdr = 0;
- dev->stop = false;
dev->wd_pending = false;
/* update the state of the registers after reset */
dev->host_hw_state, dev->me_hw_state);
if (unexpected)
- dev_warn(&dev->pdev->dev, "unexpected reset.\n");
+ dev_warn(&dev->pdev->dev, "unexpected reset: dev_state = %s\n",
+ mei_dev_state_str(dev->dev_state));
/* Wake up all readings so they can be interrupted */
list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) {
if (mei_write_message(dev, mei_hdr, (unsigned char *)host_start_req,
mei_hdr->length)) {
dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n");
- dev->mei_state = MEI_RESETING;
+ dev->dev_state = MEI_DEV_RESETING;
mei_reset(dev, 1);
}
dev->init_clients_state = MEI_START_MESSAGE;
host_enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
if (mei_write_message(dev, mei_hdr, (unsigned char *)host_enum_req,
mei_hdr->length)) {
- dev->mei_state = MEI_RESETING;
+ dev->dev_state = MEI_DEV_RESETING;
dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
mei_reset(dev, 1);
}
sizeof(struct mei_me_client), GFP_KERNEL);
if (!clients) {
dev_dbg(&dev->pdev->dev, "memory allocation for ME clients failed.\n");
- dev->mei_state = MEI_RESETING;
+ dev->dev_state = MEI_DEV_RESETING;
mei_reset(dev, 1);
return ;
}
if (mei_write_message(dev, mei_header,
(unsigned char *)host_cli_req,
mei_header->length)) {
- dev->mei_state = MEI_RESETING;
+ dev->dev_state = MEI_DEV_RESETING;
dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
mei_reset(dev, 1);
return -EIO;
priv->dev = dev;
}
-int mei_find_me_client_index(const struct mei_device *dev, uuid_le cuuid)
+int mei_me_cl_by_uuid(const struct mei_device *dev, const uuid_le *cuuid)
{
- int i, res = -1;
+ int i, res = -ENOENT;
for (i = 0; i < dev->me_clients_num; ++i)
- if (uuid_le_cmp(cuuid,
+ if (uuid_le_cmp(*cuuid,
dev->me_clients[i].props.protocol_name) == 0) {
res = i;
break;
/**
- * mei_find_me_client_update_filext - searches for ME client guid
+ * mei_me_cl_update_filext - searches for ME client guid
* sets client_id in mei_file_private if found
* @dev: the device structure
- * @priv: private file structure to set client_id in
- * @cguid: searched guid of ME client
+ * @cl: private file structure to set client_id in
+ * @cuuid: searched uuid of ME client
* @client_id: id of host client to be set in file private structure
*
* returns ME client index
*/
-u8 mei_find_me_client_update_filext(struct mei_device *dev, struct mei_cl *priv,
- const uuid_le *cguid, u8 client_id)
+int mei_me_cl_update_filext(struct mei_device *dev, struct mei_cl *cl,
+ const uuid_le *cuuid, u8 host_cl_id)
{
int i;
- if (!dev || !priv || !cguid)
- return 0;
+ if (!dev || !cl || !cuuid)
+ return -EINVAL;
/* check for valid client id */
- i = mei_find_me_client_index(dev, *cguid);
+ i = mei_me_cl_by_uuid(dev, cuuid);
if (i >= 0) {
- priv->me_client_id = dev->me_clients[i].client_id;
- priv->state = MEI_FILE_CONNECTING;
- priv->host_client_id = client_id;
+ cl->me_client_id = dev->me_clients[i].client_id;
+ cl->state = MEI_FILE_CONNECTING;
+ cl->host_client_id = host_cl_id;
- list_add_tail(&priv->link, &dev->file_list);
+ list_add_tail(&cl->link, &dev->file_list);
return (u8)i;
}
- return 0;
+ return -ENOENT;
}
/**
*/
void mei_host_init_iamthif(struct mei_device *dev)
{
- u8 i;
+ int i;
unsigned char *msg_buf;
mei_cl_init(&dev->iamthif_cl, dev);
dev->iamthif_cl.state = MEI_FILE_DISCONNECTED;
/* find ME amthi client */
- i = mei_find_me_client_update_filext(dev, &dev->iamthif_cl,
+ i = mei_me_cl_update_filext(dev, &dev->iamthif_cl,
&mei_amthi_guid, MEI_IAMTHIF_HOST_CLIENT_ID);
- if (dev->iamthif_cl.state != MEI_FILE_CONNECTING) {
+ if (i < 0) {
dev_dbg(&dev->pdev->dev, "failed to find iamthif client.\n");
return;
}
#include "mei_dev.h"
-#define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */
-#define AMT_WD_MIN_TIMEOUT 120 /* seconds */
-#define AMT_WD_MAX_TIMEOUT 65535 /* seconds */
-
-#define MEI_WATCHDOG_DATA_SIZE 16
-#define MEI_START_WD_DATA_SIZE 20
-#define MEI_WD_PARAMS_SIZE 4
-
void mei_read_slots(struct mei_device *dev,
unsigned char *buffer,
int mei_wd_send(struct mei_device *dev);
-int mei_wd_stop(struct mei_device *dev, bool preserve);
+int mei_wd_stop(struct mei_device *dev);
int mei_wd_host_init(struct mei_device *dev);
/*
* mei_watchdog_register - Registering watchdog interface
cl->status = 0;
list_del(&cb_pos->cb_list);
dev_dbg(&dev->pdev->dev,
- "completed read host client = %d,"
- "ME client = %d, "
- "data length = %lu\n",
+ "completed read H cl = %d, ME cl = %d, length = %lu\n",
cl->host_client_id,
cl->me_client_id,
cb_pos->information);
-
- *(cb_pos->response_buffer.data +
- cb_pos->information) = '\0';
- dev_dbg(&dev->pdev->dev, "cb_pos->res_buffer - %s\n",
- cb_pos->response_buffer.data);
list_add_tail(&cb_pos->cb_list,
&complete_list->mei_cb.cb_list);
}
if (version_res->host_version_supported) {
dev->version.major_version = HBM_MAJOR_VERSION;
dev->version.minor_version = HBM_MINOR_VERSION;
- if (dev->mei_state == MEI_INIT_CLIENTS &&
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
dev->init_clients_state == MEI_START_MESSAGE) {
dev->init_clients_timer = 0;
mei_host_enum_clients_message(dev);
dev->me_clients[dev->me_client_presentation_num].props
= props_res->client_properties;
- if (dev->mei_state == MEI_INIT_CLIENTS &&
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
dev->init_clients_state ==
MEI_CLIENT_PROPERTIES_MESSAGE) {
dev->me_client_index++;
* Client ID 2 - Reserved for AMTHI
*/
bitmap_set(dev->host_clients_map, 0, 3);
- dev->mei_state = MEI_ENABLED;
+ dev->dev_state = MEI_DEV_ENABLED;
/* if wd initialization fails, initialization the AMTHI client,
* otherwise the AMTHI client will be initialized after the WD client connect response
case HOST_ENUM_RES_CMD:
enum_res = (struct hbm_host_enum_response *) mei_msg;
memcpy(dev->me_clients_map, enum_res->valid_addresses, 32);
- if (dev->mei_state == MEI_INIT_CLIENTS &&
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) {
dev->init_clients_timer = 0;
dev->me_client_presentation_num = 0;
break;
case HOST_STOP_RES_CMD:
- dev->mei_state = MEI_DISABLED;
+ dev->dev_state = MEI_DEV_DISABLED;
dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n");
mei_reset(dev, 1);
break;
}
}
- if (dev->stop && !dev->wd_pending) {
- dev->wd_stopped = true;
+ if (dev->wd_state == MEI_WD_STOPPING) {
+ dev->wd_state = MEI_WD_IDLE;
wake_up_interruptible(&dev->wait_stop_wd);
- return 0;
}
if (dev->extra_write_index) {
*slots -= dev->extra_write_index;
dev->extra_write_index = 0;
}
- if (dev->mei_state == MEI_ENABLED) {
+ if (dev->dev_state == MEI_DEV_ENABLED) {
if (dev->wd_pending &&
mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {
if (mei_wd_send(dev))
dev->wd_pending = false;
- if (dev->wd_timeout)
- *slots -= mei_data2slots(MEI_START_WD_DATA_SIZE);
+ if (dev->wd_state == MEI_WD_RUNNING)
+ *slots -= mei_data2slots(MEI_WD_START_MSG_SIZE);
else
- *slots -= mei_data2slots(MEI_WD_PARAMS_SIZE);
+ *slots -= mei_data2slots(MEI_WD_STOP_MSG_SIZE);
}
}
- if (dev->stop)
- return -ENODEV;
/* complete control write list CB */
dev_dbg(&dev->pdev->dev, "complete control write list cb.\n");
mutex_lock(&dev->device_lock);
- if (dev->mei_state != MEI_ENABLED) {
- if (dev->mei_state == MEI_INIT_CLIENTS) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS) {
if (dev->init_clients_timer) {
if (--dev->init_clients_timer == 0) {
dev_dbg(&dev->pdev->dev, "IMEI reset due to init clients timeout ,init clients state = %d.\n",
/* check if ME wants a reset */
if ((dev->me_hw_state & ME_RDY_HRA) == 0 &&
- dev->mei_state != MEI_RESETING &&
- dev->mei_state != MEI_INITIALIZING) {
+ dev->dev_state != MEI_DEV_RESETING &&
+ dev->dev_state != MEI_DEV_INITIALIZING) {
dev_dbg(&dev->pdev->dev, "FW not ready.\n");
mei_reset(dev, 1);
mutex_unlock(&dev->device_lock);
dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
dev->host_hw_state |= (H_IE | H_IG | H_RDY);
mei_hcsr_set(dev);
- dev->mei_state = MEI_INIT_CLIENTS;
+ dev->dev_state = MEI_DEV_INIT_CLIENTS;
dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n");
/* link is established
* start sending messages.
#include <linux/mei.h>
#include "interface.h"
+/**
+ * mei_me_cl_by_id return index to me_clients for client_id
+ *
+ * @dev: the device structure
+ * @client_id: me client id
+ *
+ * Locking: called under "dev->device_lock" lock
+ *
+ * returns index on success, -ENOENT on failure.
+ */
+int mei_me_cl_by_id(struct mei_device *dev, u8 client_id)
+{
+ int i;
+ for (i = 0; i < dev->me_clients_num; i++)
+ if (dev->me_clients[i].client_id == client_id)
+ break;
+ if (WARN_ON(dev->me_clients[i].client_id != client_id))
+ return -ENOENT;
+
+ if (i == dev->me_clients_num)
+ return -ENOENT;
+
+ return i;
+}
/**
* mei_ioctl_connect_client - the connect to fw client IOCTL function
cb->major_file_operations = MEI_IOCTL;
- if (dev->mei_state != MEI_ENABLED) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto end;
}
}
/* find ME client we're trying to connect to */
- i = mei_find_me_client_index(dev, data->in_client_uuid);
+ i = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
if (i >= 0 && !dev->me_clients[i].props.fixed_address) {
cl->me_client_id = dev->me_clients[i].client_id;
cl->state = MEI_FILE_CONNECTING;
return -ETIMEDOUT;
}
- for (i = 0; i < dev->me_clients_num; i++) {
- if (dev->me_clients[i].client_id ==
- dev->iamthif_cl.me_client_id)
- break;
- }
+ i = mei_me_cl_by_id(dev, dev->iamthif_cl.me_client_id);
- if (i == dev->me_clients_num) {
+ if (i < 0) {
dev_dbg(&dev->pdev->dev, "amthi client not found.\n");
return -ENODEV;
}
- if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id))
- return -ENODEV;
-
dev_dbg(&dev->pdev->dev, "checking amthi data\n");
cb = find_amthi_read_list_entry(dev, file);
dev->iamthif_timer = 0;
if (cb) {
- timeout = cb->read_time +
- msecs_to_jiffies(IAMTHIF_READ_TIMER);
+ timeout = cb->read_time + msecs_to_jiffies(IAMTHIF_READ_TIMER);
dev_dbg(&dev->pdev->dev, "amthi timeout = %lud\n",
timeout);
if (cl->state != MEI_FILE_CONNECTED)
return -ENODEV;
- if (dev->mei_state != MEI_ENABLED)
+ if (dev->dev_state != MEI_DEV_ENABLED)
return -ENODEV;
dev_dbg(&dev->pdev->dev, "check if read is pending.\n");
dev_dbg(&dev->pdev->dev, "allocation call back successful. host client = %d, ME client = %d\n",
cl->host_client_id, cl->me_client_id);
-
- for (i = 0; i < dev->me_clients_num; i++) {
- if (dev->me_clients[i].client_id == cl->me_client_id)
- break;
-
- }
-
- if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) {
- rets = -ENODEV;
- goto unlock;
- }
-
- if (i == dev->me_clients_num) {
+ i = mei_me_cl_by_id(dev, cl->me_client_id);
+ if (i < 0) {
rets = -ENODEV;
goto unlock;
}
#include <linux/mei.h>
#include "interface.h"
-static const char mei_driver_name[] = "mei";
-
-/* The device pointer */
-/* Currently this driver works as long as there is only a single AMT device. */
-struct pci_dev *mei_device;
+/* AMT device is a singleton on the platform */
+static struct pci_dev *mei_pdev;
/* mei_pci_tbl - PCI Device ID Table */
static DEFINE_PCI_DEVICE_TABLE(mei_pci_tbl) = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_1)},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_2)},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_3)},
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_LPT)},
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_LPT_LP)},
/* required last entry */
{0, }
int err;
err = -ENODEV;
- if (!mei_device)
+ if (!mei_pdev)
goto out;
- dev = pci_get_drvdata(mei_device);
+ dev = pci_get_drvdata(mei_pdev);
if (!dev)
goto out;
goto out_unlock;
err = -ENODEV;
- if (dev->mei_state != MEI_ENABLED) {
- dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED mei_state= %d\n",
- dev->mei_state);
+ if (dev->dev_state != MEI_DEV_ENABLED) {
+ dev_dbg(&dev->pdev->dev, "dev_state != MEI_ENABLED dev_state = %s\n",
+ mei_dev_state_str(dev->dev_state));
goto out_unlock;
}
err = -EMFILE;
- if (dev->open_handle_count >= MEI_MAX_OPEN_HANDLE_COUNT)
+ if (dev->open_handle_count >= MEI_MAX_OPEN_HANDLE_COUNT) {
+ dev_err(&dev->pdev->dev, "open_handle_count exceded %d",
+ MEI_MAX_OPEN_HANDLE_COUNT);
goto out_unlock;
+ }
cl_id = find_first_zero_bit(dev->host_clients_map, MEI_CLIENTS_MAX);
- if (cl_id >= MEI_CLIENTS_MAX)
+ if (cl_id >= MEI_CLIENTS_MAX) {
+ dev_err(&dev->pdev->dev, "client_id exceded %d",
+ MEI_CLIENTS_MAX) ;
goto out_unlock;
+ }
cl->host_client_id = cl_id;
dev = cl->dev;
mutex_lock(&dev->device_lock);
- if (dev->mei_state != MEI_ENABLED) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto out;
}
if ((cl->sm_state & MEI_WD_STATE_INDEPENDENCE_MSG_SENT) == 0) {
/* Do not allow to read watchdog client */
- i = mei_find_me_client_index(dev, mei_wd_guid);
+ i = mei_me_cl_by_uuid(dev, &mei_wd_guid);
if (i >= 0) {
struct mei_me_client *me_client = &dev->me_clients[i];
-
if (cl->me_client_id == me_client->client_id) {
rets = -EBADF;
goto out;
mutex_lock(&dev->device_lock);
- if (dev->mei_state != MEI_ENABLED) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
mutex_unlock(&dev->device_lock);
return -ENODEV;
}
rets = -ENOMEM;
goto unlock_dev;
}
- if (dev->mei_state != MEI_ENABLED) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto unlock_dev;
}
- for (i = 0; i < dev->me_clients_num; i++) {
- if (dev->me_clients[i].client_id ==
- dev->iamthif_cl.me_client_id)
- break;
- }
-
- if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) {
+ i = mei_me_cl_by_id(dev, dev->iamthif_cl.me_client_id);
+ if (i < 0) {
rets = -ENODEV;
goto unlock_dev;
}
- if (i == dev->me_clients_num ||
- (dev->me_clients[i].client_id !=
- dev->iamthif_cl.me_client_id)) {
- rets = -ENODEV;
- goto unlock_dev;
- } else if (length > dev->me_clients[i].props.max_msg_length ||
+ if (length > dev->me_clients[i].props.max_msg_length ||
length <= 0) {
rets = -EMSGSIZE;
goto unlock_dev;
cl->me_client_id);
goto unlock_dev;
}
- for (i = 0; i < dev->me_clients_num; i++) {
- if (dev->me_clients[i].client_id ==
- cl->me_client_id)
- break;
- }
- if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) {
- rets = -ENODEV;
- goto unlock_dev;
- }
- if (i == dev->me_clients_num) {
+ i = mei_me_cl_by_id(dev, cl->me_client_id);
+ if (i < 0) {
rets = -ENODEV;
goto unlock_dev;
}
dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd);
mutex_lock(&dev->device_lock);
- if (dev->mei_state != MEI_ENABLED) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto out;
}
mutex_lock(&dev->device_lock);
- if (dev->mei_state != MEI_ENABLED)
+ if (dev->dev_state != MEI_DEV_ENABLED)
goto out;
goto end;
}
- if (mei_device) {
+ if (mei_pdev) {
err = -EEXIST;
goto end;
}
/* set PCI host mastering */
pci_set_master(pdev);
/* pci request regions for mei driver */
- err = pci_request_regions(pdev, mei_driver_name);
+ err = pci_request_regions(pdev, KBUILD_MODNAME);
if (err) {
dev_err(&pdev->dev, "failed to get pci regions.\n");
goto disable_device;
err = request_threaded_irq(pdev->irq,
NULL,
mei_interrupt_thread_handler,
- IRQF_ONESHOT, mei_driver_name, dev);
+ IRQF_ONESHOT, KBUILD_MODNAME, dev);
else
err = request_threaded_irq(pdev->irq,
mei_interrupt_quick_handler,
mei_interrupt_thread_handler,
- IRQF_SHARED, mei_driver_name, dev);
+ IRQF_SHARED, KBUILD_MODNAME, dev);
if (err) {
dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n",
if (err)
goto release_irq;
- mei_device = pdev;
+ mei_pdev = pdev;
pci_set_drvdata(pdev, dev);
{
struct mei_device *dev;
- if (mei_device != pdev)
+ if (mei_pdev != pdev)
return;
dev = pci_get_drvdata(pdev);
mutex_lock(&dev->device_lock);
- mei_wd_stop(dev, false);
+ cancel_delayed_work(&dev->timer_work);
- mei_device = NULL;
+ mei_wd_stop(dev);
+
+ mei_pdev = NULL;
if (dev->iamthif_cl.state == MEI_FILE_CONNECTED) {
dev->iamthif_cl.state = MEI_FILE_DISCONNECTING;
if (!dev)
return -ENODEV;
mutex_lock(&dev->device_lock);
+
+ cancel_delayed_work(&dev->timer_work);
+
/* Stop watchdog if exists */
- err = mei_wd_stop(dev, true);
+ err = mei_wd_stop(dev);
/* Set new mei state */
- if (dev->mei_state == MEI_ENABLED ||
- dev->mei_state == MEI_RECOVERING_FROM_RESET) {
- dev->mei_state = MEI_POWER_DOWN;
+ if (dev->dev_state == MEI_DEV_ENABLED ||
+ dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) {
+ dev->dev_state = MEI_DEV_POWER_DOWN;
mei_reset(dev, 0);
}
mutex_unlock(&dev->device_lock);
err = request_threaded_irq(pdev->irq,
NULL,
mei_interrupt_thread_handler,
- IRQF_ONESHOT, mei_driver_name, dev);
+ IRQF_ONESHOT, KBUILD_MODNAME, dev);
else
err = request_threaded_irq(pdev->irq,
mei_interrupt_quick_handler,
mei_interrupt_thread_handler,
- IRQF_SHARED, mei_driver_name, dev);
+ IRQF_SHARED, KBUILD_MODNAME, dev);
if (err) {
dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n",
}
mutex_lock(&dev->device_lock);
- dev->mei_state = MEI_POWER_UP;
+ dev->dev_state = MEI_DEV_POWER_UP;
mei_reset(dev, 1);
mutex_unlock(&dev->device_lock);
* PCI driver structure
*/
static struct pci_driver mei_driver = {
- .name = mei_driver_name,
+ .name = KBUILD_MODNAME,
.id_table = mei_pci_tbl,
.probe = mei_probe,
.remove = __devexit_p(mei_remove),
/*
* watch dog definition
*/
-#define MEI_WATCHDOG_DATA_SIZE 16
-#define MEI_START_WD_DATA_SIZE 20
-#define MEI_WD_PARAMS_SIZE 4
+#define MEI_WD_HDR_SIZE 4
+#define MEI_WD_STOP_MSG_SIZE MEI_WD_HDR_SIZE
+#define MEI_WD_START_MSG_SIZE (MEI_WD_HDR_SIZE + 16)
+
+#define MEI_WD_DEFAULT_TIMEOUT 120 /* seconds */
+#define MEI_WD_MIN_TIMEOUT 120 /* seconds */
+#define MEI_WD_MAX_TIMEOUT 65535 /* seconds */
+
+#define MEI_WD_STOP_TIMEOUT 10 /* msecs */
+
#define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0)
#define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32))
-/*
- * MEI PCI Device object
- */
-extern struct pci_dev *mei_device;
-
/*
* AMTHI Client UUID
*/
extern const u8 mei_wd_state_independence_msg[3][4];
+/*
+ * Number of Maximum MEI Clients
+ */
+#define MEI_CLIENTS_MAX 256
+
/*
* Number of File descriptors/handles
* that can be opened to the driver.
*
- * Limit to 253: 255 Total Clients
+ * Limit to 253: 256 Total Clients
+ * minus internal client for MEI Bus Messags
* minus internal client for AMTHI
* minus internal client for Watchdog
*/
-#define MEI_MAX_OPEN_HANDLE_COUNT 253
+#define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 3)
-/*
- * Number of Maximum MEI Clients
- */
-#define MEI_CLIENTS_MAX 255
/* File state */
enum file_state {
};
/* MEI device states */
-enum mei_states {
- MEI_INITIALIZING = 0,
- MEI_INIT_CLIENTS,
- MEI_ENABLED,
- MEI_RESETING,
- MEI_DISABLED,
- MEI_RECOVERING_FROM_RESET,
- MEI_POWER_DOWN,
- MEI_POWER_UP
+enum mei_dev_state {
+ MEI_DEV_INITIALIZING = 0,
+ MEI_DEV_INIT_CLIENTS,
+ MEI_DEV_ENABLED,
+ MEI_DEV_RESETING,
+ MEI_DEV_DISABLED,
+ MEI_DEV_RECOVERING_FROM_RESET,
+ MEI_DEV_POWER_DOWN,
+ MEI_DEV_POWER_UP
};
+const char *mei_dev_state_str(int state);
+
/* init clients states*/
enum mei_init_clients_states {
MEI_START_MESSAGE = 0,
MEI_READ_COMPLETE
};
+enum mei_wd_states {
+ MEI_WD_IDLE,
+ MEI_WD_RUNNING,
+ MEI_WD_STOPPING,
+};
+
/* MEI CB */
enum mei_cb_major_types {
MEI_READ = 0,
struct mei_message_data {
u32 size;
unsigned char *data;
-} __packed;
+};
struct mei_cl_cb {
/*
* mei device states
*/
- enum mei_states mei_state;
+ enum mei_dev_state dev_state;
enum mei_init_clients_states init_clients_state;
u16 init_clients_timer;
- bool stop;
bool need_reset;
u32 extra_write_index;
bool mei_host_buffer_is_empty;
struct mei_cl wd_cl;
+ enum mei_wd_states wd_state;
bool wd_interface_reg;
bool wd_pending;
- bool wd_stopped;
- bool wd_bypass; /* if false, don't refresh watchdog ME client */
- u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */
- unsigned char wd_data[MEI_START_WD_DATA_SIZE];
+ u16 wd_timeout;
+ unsigned char wd_data[MEI_WD_START_MSG_SIZE];
struct file *iamthif_file_object;
void mei_allocate_me_clients_storage(struct mei_device *dev);
-u8 mei_find_me_client_update_filext(struct mei_device *dev,
- struct mei_cl *priv,
- const uuid_le *cguid, u8 client_id);
+int mei_me_cl_update_filext(struct mei_device *dev, struct mei_cl *cl,
+ const uuid_le *cguid, u8 host_client_id);
+int mei_me_cl_by_uuid(const struct mei_device *dev, const uuid_le *cuuid);
+int mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
/*
* MEI IO List Functions
void mei_free_cb_private(struct mei_cl_cb *priv_cb);
-int mei_find_me_client_index(const struct mei_device *dev, uuid_le cuuid);
/*
* Register Access Function
static void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout)
{
dev_dbg(&dev->pdev->dev, "wd: set timeout=%d.\n", timeout);
- memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE);
- memcpy(dev->wd_data + MEI_WD_PARAMS_SIZE, &timeout, sizeof(u16));
+ memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE);
+ memcpy(dev->wd_data + MEI_WD_HDR_SIZE, &timeout, sizeof(u16));
}
/**
/* look for WD client and connect to it */
dev->wd_cl.state = MEI_FILE_DISCONNECTED;
- dev->wd_timeout = AMT_WD_DEFAULT_TIMEOUT;
+ dev->wd_timeout = MEI_WD_DEFAULT_TIMEOUT;
+ dev->wd_state = MEI_WD_IDLE;
/* find ME WD client */
- mei_find_me_client_update_filext(dev, &dev->wd_cl,
+ mei_me_cl_update_filext(dev, &dev->wd_cl,
&mei_wd_guid, MEI_WD_HOST_CLIENT_ID);
dev_dbg(&dev->pdev->dev, "wd: check client\n");
mei_hdr->msg_complete = 1;
mei_hdr->reserved = 0;
- if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE))
- mei_hdr->length = MEI_START_WD_DATA_SIZE;
- else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE))
- mei_hdr->length = MEI_WD_PARAMS_SIZE;
+ if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE))
+ mei_hdr->length = MEI_WD_START_MSG_SIZE;
+ else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_HDR_SIZE))
+ mei_hdr->length = MEI_WD_STOP_MSG_SIZE;
else
return -EINVAL;
* -EIO when message send fails
* -EINVAL when invalid message is to be sent
*/
-int mei_wd_stop(struct mei_device *dev, bool preserve)
+int mei_wd_stop(struct mei_device *dev)
{
int ret;
- u16 wd_timeout = dev->wd_timeout;
- cancel_delayed_work(&dev->timer_work);
- if (dev->wd_cl.state != MEI_FILE_CONNECTED || !dev->wd_timeout)
+ if (dev->wd_cl.state != MEI_FILE_CONNECTED ||
+ dev->wd_state != MEI_WD_RUNNING)
return 0;
- dev->wd_timeout = 0;
- memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE);
- dev->stop = true;
+ memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_STOP_MSG_SIZE);
+
+ dev->wd_state = MEI_WD_STOPPING;
ret = mei_flow_ctrl_creds(dev, &dev->wd_cl);
if (ret < 0)
} else {
dev->wd_pending = true;
}
- dev->wd_stopped = false;
+
mutex_unlock(&dev->device_lock);
ret = wait_event_interruptible_timeout(dev->wait_stop_wd,
- dev->wd_stopped, 10 * HZ);
+ dev->wd_state == MEI_WD_IDLE,
+ msecs_to_jiffies(MEI_WD_STOP_TIMEOUT));
mutex_lock(&dev->device_lock);
- if (dev->wd_stopped) {
+ if (dev->wd_state == MEI_WD_IDLE) {
dev_dbg(&dev->pdev->dev, "wd: stop completed ret=%d.\n", ret);
ret = 0;
} else {
"wd: stop failed to complete ret=%d.\n", ret);
}
- if (preserve)
- dev->wd_timeout = wd_timeout;
-
out:
return ret;
}
int err = -ENODEV;
struct mei_device *dev;
- dev = pci_get_drvdata(mei_device);
+ dev = watchdog_get_drvdata(wd_dev);
if (!dev)
return -ENODEV;
mutex_lock(&dev->device_lock);
- if (dev->mei_state != MEI_ENABLED) {
+ if (dev->dev_state != MEI_DEV_ENABLED) {
dev_dbg(&dev->pdev->dev,
- "wd: mei_state != MEI_ENABLED mei_state = %d\n",
- dev->mei_state);
+ "wd: dev_state != MEI_DEV_ENABLED dev_state = %s\n",
+ mei_dev_state_str(dev->dev_state));
goto end_unlock;
}
static int mei_wd_ops_stop(struct watchdog_device *wd_dev)
{
struct mei_device *dev;
- dev = pci_get_drvdata(mei_device);
+ dev = watchdog_get_drvdata(wd_dev);
if (!dev)
return -ENODEV;
mutex_lock(&dev->device_lock);
- mei_wd_stop(dev, false);
+ mei_wd_stop(dev);
mutex_unlock(&dev->device_lock);
return 0;
{
int ret = 0;
struct mei_device *dev;
- dev = pci_get_drvdata(mei_device);
+ dev = watchdog_get_drvdata(wd_dev);
if (!dev)
return -ENODEV;
goto end;
}
+ dev->wd_state = MEI_WD_RUNNING;
+
/* Check if we can send the ping to HW*/
if (dev->mei_host_buffer_is_empty &&
mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {
static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int timeout)
{
struct mei_device *dev;
- dev = pci_get_drvdata(mei_device);
+ dev = watchdog_get_drvdata(wd_dev);
if (!dev)
return -ENODEV;
/* Check Timeout value */
- if (timeout < AMT_WD_MIN_TIMEOUT || timeout > AMT_WD_MAX_TIMEOUT)
+ if (timeout < MEI_WD_MIN_TIMEOUT || timeout > MEI_WD_MAX_TIMEOUT)
return -EINVAL;
mutex_lock(&dev->device_lock);
};
static const struct watchdog_info wd_info = {
.identity = INTEL_AMT_WATCHDOG_ID,
- .options = WDIOF_KEEPALIVEPING | WDIOF_ALARMONLY,
+ .options = WDIOF_KEEPALIVEPING |
+ WDIOF_SETTIMEOUT |
+ WDIOF_ALARMONLY,
};
static struct watchdog_device amt_wd_dev = {
.info = &wd_info,
.ops = &wd_ops,
- .timeout = AMT_WD_DEFAULT_TIMEOUT,
- .min_timeout = AMT_WD_MIN_TIMEOUT,
- .max_timeout = AMT_WD_MAX_TIMEOUT,
+ .timeout = MEI_WD_DEFAULT_TIMEOUT,
+ .min_timeout = MEI_WD_MIN_TIMEOUT,
+ .max_timeout = MEI_WD_MAX_TIMEOUT,
};
-void mei_watchdog_register(struct mei_device *dev)
+void mei_watchdog_register(struct mei_device *dev)
{
- dev_dbg(&dev->pdev->dev, "dev->wd_timeout =%d.\n", dev->wd_timeout);
-
if (watchdog_register_device(&amt_wd_dev)) {
dev_err(&dev->pdev->dev,
"wd: unable to register watchdog device.\n");
dev->wd_interface_reg = false;
- } else {
- dev_dbg(&dev->pdev->dev,
- "wd: successfully register watchdog interface.\n");
- dev->wd_interface_reg = true;
+ return;
}
+
+ dev_dbg(&dev->pdev->dev,
+ "wd: successfully register watchdog interface.\n");
+ dev->wd_interface_reg = true;
+ watchdog_set_drvdata(&amt_wd_dev, dev);
}
void mei_watchdog_unregister(struct mei_device *dev)
{
- if (dev->wd_interface_reg)
- watchdog_unregister_device(&amt_wd_dev);
+ if (!dev->wd_interface_reg)
+ return;
+
+ watchdog_set_drvdata(&amt_wd_dev, NULL);
+ watchdog_unregister_device(&amt_wd_dev);
dev->wd_interface_reg = false;
}
chip->pch_phub_base_address = pci_iomap(pdev, 1, 0);
- if (chip->pch_phub_base_address == 0) {
+ if (chip->pch_phub_base_address == NULL) {
dev_err(&pdev->dev, "%s : pci_iomap FAILED", __func__);
ret = -ENOMEM;
goto err_pci_iomap;
.resume = pch_phub_resume
};
-static int __init pch_phub_pci_init(void)
-{
- return pci_register_driver(&pch_phub_driver);
-}
-
-static void __exit pch_phub_pci_exit(void)
-{
- pci_unregister_driver(&pch_phub_driver);
-}
-
-module_init(pch_phub_pci_init);
-module_exit(pch_phub_pci_exit);
+module_pci_driver(pch_phub_driver);
MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7223) PHUB");
MODULE_LICENSE("GPL");
#include <linux/ti_wilink_st.h>
+extern void st_kim_recv(void *, const unsigned char *, long);
+void st_int_recv(void *, const unsigned char *, long);
/* function pointer pointing to either,
* st_kim_recv during registration to receive fw download responses
* st_int_recv after registration to receive proto stack responses
*/
-void (*st_recv) (void*, const unsigned char*, long);
+static void (*st_recv) (void *, const unsigned char *, long);
/********************************************************************/
static void add_channel_to_table(struct st_data_s *st_gdata,
* push the skb received to relevant
* protocol stacks
*/
-void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
+static void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
{
pr_debug(" %s(prot:%d) ", __func__, chnl_id);
* This function is being called with spin lock held, protocol drivers are
* only expected to complete their waits and do nothing more than that.
*/
-void st_reg_complete(struct st_data_s *st_gdata, char err)
+static void st_reg_complete(struct st_data_s *st_gdata, char err)
{
unsigned char i = 0;
pr_info(" %s ", __func__);
* completely, return that skb which has the pending data.
* In normal cases, return top of txq.
*/
-struct sk_buff *st_int_dequeue(struct st_data_s *st_gdata)
+static struct sk_buff *st_int_dequeue(struct st_data_s *st_gdata)
{
struct sk_buff *returning_skb;
* txq and waitq needs protection since the other contexts
* may be sending data, waking up chip.
*/
-void st_int_enqueue(struct st_data_s *st_gdata, struct sk_buff *skb)
+static void st_int_enqueue(struct st_data_s *st_gdata, struct sk_buff *skb)
{
unsigned long flags = 0;
* in case of error don't complete so that waiting for proper
* response times out
*/
-void validate_firmware_response(struct kim_data_s *kim_gdata)
+static void validate_firmware_response(struct kim_data_s *kim_gdata)
{
struct sk_buff *skb = kim_gdata->rx_skb;
- if (unlikely(skb->data[5] != 0)) {
+ if (!skb)
+ return;
+
+ /* these magic numbers are the position in the response buffer which
+ * allows us to distinguish whether the response is for the read
+ * version info. command
+ */
+ if (skb->data[2] == 0x01 && skb->data[3] == 0x01 &&
+ skb->data[4] == 0x10 && skb->data[5] == 0x00) {
+ /* fw version response */
+ memcpy(kim_gdata->resp_buffer,
+ kim_gdata->rx_skb->data,
+ kim_gdata->rx_skb->len);
+ complete_all(&kim_gdata->kim_rcvd);
+ kim_gdata->rx_state = ST_W4_PACKET_TYPE;
+ kim_gdata->rx_skb = NULL;
+ kim_gdata->rx_count = 0;
+ } else if (unlikely(skb->data[5] != 0)) {
pr_err("no proper response during fw download");
pr_err("data6 %x", skb->data[5]);
kfree_skb(skb);
* have been observed to come in bursts of different
* tty_receive and hence the logic
*/
-void kim_int_recv(struct kim_data_s *kim_gdata,
+static void kim_int_recv(struct kim_data_s *kim_gdata,
const unsigned char *data, long count)
{
const unsigned char *ptr;
return -EIO;
}
- if (!wait_for_completion_timeout
- (&kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) {
+ if (!wait_for_completion_interruptible_timeout(
+ &kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) {
pr_err(" waiting for ver info- timed out ");
return -ETIMEDOUT;
}
INIT_COMPLETION(kim_gdata->kim_rcvd);
+ /* the positions 12 & 13 in the response buffer provide with the
+ * chip, major & minor numbers
+ */
version =
- MAKEWORD(kim_gdata->resp_buffer[13],
- kim_gdata->resp_buffer[14]);
+ MAKEWORD(kim_gdata->resp_buffer[12],
+ kim_gdata->resp_buffer[13]);
chip = (version & 0x7C00) >> 10;
min_ver = (version & 0x007F);
maj_ver = (version & 0x0380) >> 7;
return 0;
}
-void skip_change_remote_baud(unsigned char **ptr, long *len)
+static void skip_change_remote_baud(unsigned char **ptr, long *len)
{
unsigned char *nxt_action, *cur_action;
cur_action = *ptr;
break;
case ACTION_WAIT_EVENT: /* wait */
pr_debug("W");
- if (!wait_for_completion_timeout
- (&kim_gdata->kim_rcvd,
- msecs_to_jiffies(CMD_RESP_TIME))) {
+ if (!wait_for_completion_interruptible_timeout(
+ &kim_gdata->kim_rcvd,
+ msecs_to_jiffies(CMD_RESP_TIME))) {
pr_err("response timeout during fw download ");
/* timed out */
release_firmware(kim_gdata->fw_entry);
struct st_data_s *st_gdata = (struct st_data_s *)disc_data;
struct kim_data_s *kim_gdata = st_gdata->kim_data;
- /* copy to local buffer */
- if (unlikely(data[4] == 0x01 && data[5] == 0x10 && data[0] == 0x04)) {
- /* must be the read_ver_cmd */
- memcpy(kim_gdata->resp_buffer, data, count);
- complete_all(&kim_gdata->kim_rcvd);
- return;
- } else {
- kim_int_recv(kim_gdata, data, count);
- /* either completes or times out */
- }
+ /* proceed to gather all data and distinguish read fw version response
+ * from other fw responses when data gathering is complete
+ */
+ kim_int_recv(kim_gdata, data, count);
return;
}
if (pdata->chip_enable)
pdata->chip_enable(kim_gdata);
- /* Configure BT nShutdown to HIGH state */
- gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
- mdelay(5); /* FIXME: a proper toggle */
- gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
- mdelay(100);
/* re-initialize the completion */
INIT_COMPLETION(kim_gdata->ldisc_installed);
/* send notification to UIM */
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
NULL, "install");
/* wait for ldisc to be installed */
- err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
- msecs_to_jiffies(LDISC_TIME));
+ err = wait_for_completion_interruptible_timeout(
+ &kim_gdata->ldisc_installed, msecs_to_jiffies(LDISC_TIME));
if (!err) {
/* ldisc installation timeout,
* flush uart, power cycle BT_EN */
* (b) upon failure to either install ldisc or download firmware.
* The function is responsible to (a) notify UIM about un-installation,
* (b) flush UART if the ldisc was installed.
- * (c) reset BT_EN - pull down nshutdown at the end.
- * (d) invoke platform's chip disabling routine.
+ * (c) invoke platform's chip disabling routine.
*/
long st_kim_stop(void *kim_data)
{
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj, NULL, "install");
/* wait for ldisc to be un-installed */
- err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
- msecs_to_jiffies(LDISC_TIME));
+ err = wait_for_completion_interruptible_timeout(
+ &kim_gdata->ldisc_installed, msecs_to_jiffies(LDISC_TIME));
if (!err) { /* timeout */
pr_err(" timed out waiting for ldisc to be un-installed");
- return -ETIMEDOUT;
+ err = -ETIMEDOUT;
}
- /* By default configure BT nShutdown to LOW state */
- gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
- mdelay(1);
- gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
- mdelay(1);
- gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
-
/* platform specific disable */
if (pdata->chip_disable)
pdata->chip_disable(kim_gdata);
* board-*.c file
*/
-struct dentry *kim_debugfs_dir;
+static struct dentry *kim_debugfs_dir;
static int kim_probe(struct platform_device *pdev)
{
long status;
/* refer to itself */
kim_gdata->core_data->kim_data = kim_gdata;
- /* Claim the chip enable nShutdown gpio from the system */
- kim_gdata->nshutdown = pdata->nshutdown_gpio;
- status = gpio_request(kim_gdata->nshutdown, "kim");
- if (unlikely(status)) {
- pr_err(" gpio %ld request failed ", kim_gdata->nshutdown);
- return status;
- }
-
- /* Configure nShutdown GPIO as output=0 */
- status = gpio_direction_output(kim_gdata->nshutdown, 0);
- if (unlikely(status)) {
- pr_err(" unable to configure gpio %ld", kim_gdata->nshutdown);
- return status;
- }
/* get reference of pdev for request_firmware
*/
kim_gdata->kim_pdev = pdev;
static int kim_remove(struct platform_device *pdev)
{
- /* free the GPIOs requested */
- struct ti_st_plat_data *pdata = pdev->dev.platform_data;
struct kim_data_s *kim_gdata;
kim_gdata = dev_get_drvdata(&pdev->dev);
- /* Free the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- gpio_free(pdata->nshutdown_gpio);
- pr_info("nshutdown GPIO Freed");
-
debugfs_remove_recursive(kim_debugfs_dir);
sysfs_remove_group(&pdev->dev.kobj, &uim_attr_grp);
pr_info("sysfs entries removed");
return 0;
}
-int kim_suspend(struct platform_device *pdev, pm_message_t state)
+static int kim_suspend(struct platform_device *pdev, pm_message_t state)
{
struct ti_st_plat_data *pdata = pdev->dev.platform_data;
return -EOPNOTSUPP;
}
-int kim_resume(struct platform_device *pdev)
+static int kim_resume(struct platform_device *pdev)
{
struct ti_st_plat_data *pdata = pdev->dev.platform_data;
.resume = tifm_7xx1_resume,
};
-static int __init tifm_7xx1_init(void)
-{
- return pci_register_driver(&tifm_7xx1_driver);
-}
-
-static void __exit tifm_7xx1_exit(void)
-{
- pci_unregister_driver(&tifm_7xx1_driver);
-}
-
+module_pci_driver(tifm_7xx1_driver);
MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia host driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
MODULE_VERSION(DRIVER_VERSION);
-
-module_init(tifm_7xx1_init);
-module_exit(tifm_7xx1_exit);
config HDQ_MASTER_OMAP
tristate "OMAP HDQ driver"
- depends on ARCH_OMAP2PLUS
help
Say Y here if you want support for the 1-wire or HDQ Interface
on an OMAP processor.
#include <linux/sched.h>
#include <linux/pm_runtime.h>
-#include <asm/irq.h>
-#include <mach/hardware.h>
-
#include "../w1.h"
#include "../w1_int.h"
};
static int __devinit omap_hdq_probe(struct platform_device *pdev);
-static int omap_hdq_remove(struct platform_device *pdev);
+static int __devexit omap_hdq_remove(struct platform_device *pdev);
static struct platform_driver omap_hdq_driver = {
.probe = omap_hdq_probe,
- .remove = omap_hdq_remove,
+ .remove = __devexit_p(omap_hdq_remove),
.driver = {
.name = "omap_hdq",
},
hdq_data->init_trans = 0;
mutex_unlock(&hdq_data->hdq_mutex);
}
-
- return;
}
static int __devinit omap_hdq_probe(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
struct hdq_data *hdq_data;
struct resource *res;
int ret, irq;
u8 rev;
- hdq_data = kmalloc(sizeof(*hdq_data), GFP_KERNEL);
+ hdq_data = devm_kzalloc(dev, sizeof(*hdq_data), GFP_KERNEL);
if (!hdq_data) {
dev_dbg(&pdev->dev, "unable to allocate memory\n");
- ret = -ENOMEM;
- goto err_kmalloc;
+ return -ENOMEM;
}
- hdq_data->dev = &pdev->dev;
+ hdq_data->dev = dev;
platform_set_drvdata(pdev, hdq_data);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_dbg(&pdev->dev, "unable to get resource\n");
- ret = -ENXIO;
- goto err_resource;
+ return -ENXIO;
}
- hdq_data->hdq_base = ioremap(res->start, SZ_4K);
+ hdq_data->hdq_base = devm_request_and_ioremap(dev, res);
if (!hdq_data->hdq_base) {
dev_dbg(&pdev->dev, "ioremap failed\n");
- ret = -EINVAL;
- goto err_ioremap;
+ return -ENOMEM;
}
hdq_data->hdq_usecount = 0;
goto err_irq;
}
- ret = request_irq(irq, hdq_isr, IRQF_DISABLED, "omap_hdq", hdq_data);
+ ret = devm_request_irq(dev, irq, hdq_isr, IRQF_DISABLED,
+ "omap_hdq", hdq_data);
if (ret < 0) {
dev_dbg(&pdev->dev, "could not request irq\n");
goto err_irq;
err_w1:
pm_runtime_disable(&pdev->dev);
- iounmap(hdq_data->hdq_base);
-
-err_ioremap:
-err_resource:
- platform_set_drvdata(pdev, NULL);
- kfree(hdq_data);
-
-err_kmalloc:
return ret;
-
}
-static int omap_hdq_remove(struct platform_device *pdev)
+static int __devexit omap_hdq_remove(struct platform_device *pdev)
{
struct hdq_data *hdq_data = platform_get_drvdata(pdev);
/* remove module dependency */
pm_runtime_disable(&pdev->dev);
- free_irq(INT_24XX_HDQ_IRQ, hdq_data);
- platform_set_drvdata(pdev, NULL);
- iounmap(hdq_data->hdq_base);
- kfree(hdq_data);
return 0;
}
-static int __init
-omap_hdq_init(void)
-{
- return platform_driver_register(&omap_hdq_driver);
-}
-module_init(omap_hdq_init);
-
-static void __exit
-omap_hdq_exit(void)
-{
- platform_driver_unregister(&omap_hdq_driver);
-}
-module_exit(omap_hdq_exit);
+module_platform_driver(omap_hdq_driver);
module_param(w1_id, int, S_IRUSR);
MODULE_PARM_DESC(w1_id, "1-wire id for the slave detection");
#include <linux/slab.h>
#include <linux/w1-gpio.h>
#include <linux/gpio.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
#include "../w1.h"
#include "../w1_int.h"
return gpio_get_value(pdata->pin) ? 1 : 0;
}
+#ifdef CONFIG_OF
+static struct of_device_id w1_gpio_dt_ids[] = {
+ { .compatible = "w1-gpio" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, w1_gpio_dt_ids);
+
+static int w1_gpio_probe_dt(struct platform_device *pdev)
+{
+ struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *of_id =
+ of_match_device(w1_gpio_dt_ids, &pdev->dev);
+
+ if (!of_id)
+ return 0;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ if (of_get_property(np, "linux,open-drain", NULL))
+ pdata->is_open_drain = 1;
+
+ pdata->pin = of_get_gpio(np, 0);
+ pdata->ext_pullup_enable_pin = of_get_gpio(np, 1);
+ pdev->dev.platform_data = pdata;
+
+ return 0;
+}
+#else
+static int w1_gpio_probe_dt(struct platform_device *pdev)
+{
+ return 0;
+}
+#endif
+
static int __init w1_gpio_probe(struct platform_device *pdev)
{
struct w1_bus_master *master;
- struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
+ struct w1_gpio_platform_data *pdata;
int err;
+ err = w1_gpio_probe_dt(pdev);
+ if (err < 0)
+ return err;
+
+ pdata = pdev->dev.platform_data;
+
if (!pdata)
return -ENXIO;
if (err)
goto free_master;
+ if (gpio_is_valid(pdata->ext_pullup_enable_pin)) {
+ err = gpio_request_one(pdata->ext_pullup_enable_pin,
+ GPIOF_INIT_LOW, "w1 pullup");
+ if (err < 0)
+ goto free_gpio;
+ }
+
master->data = pdata;
master->read_bit = w1_gpio_read_bit;
err = w1_add_master_device(master);
if (err)
- goto free_gpio;
+ goto free_gpio_ext_pu;
if (pdata->enable_external_pullup)
pdata->enable_external_pullup(1);
+ if (gpio_is_valid(pdata->ext_pullup_enable_pin))
+ gpio_set_value(pdata->ext_pullup_enable_pin, 1);
+
platform_set_drvdata(pdev, master);
return 0;
+ free_gpio_ext_pu:
+ if (gpio_is_valid(pdata->ext_pullup_enable_pin))
+ gpio_free(pdata->ext_pullup_enable_pin);
free_gpio:
gpio_free(pdata->pin);
free_master:
if (pdata->enable_external_pullup)
pdata->enable_external_pullup(0);
+ if (gpio_is_valid(pdata->ext_pullup_enable_pin))
+ gpio_set_value(pdata->ext_pullup_enable_pin, 0);
+
w1_remove_master_device(master);
gpio_free(pdata->pin);
kfree(master);
.driver = {
.name = "w1-gpio",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(w1_gpio_dt_ids),
},
.remove = __exit_p(w1_gpio_remove),
.suspend = w1_gpio_suspend,
long st_kim_start(void *);
long st_kim_stop(void *);
-void st_kim_recv(void *, const unsigned char *, long count);
void st_kim_complete(void *);
void kim_st_list_protocols(struct st_data_s *, void *);
+void st_kim_recv(void *, const unsigned char *, long);
+
/*
* BTS headers
unsigned int pin;
unsigned int is_open_drain:1;
void (*enable_external_pullup)(int enable);
+ unsigned int ext_pullup_enable_pin;
};
#endif /* _LINUX_W1_GPIO_H */
projects / karo-tx-linux.git / commitdiff