diff options
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/net/phy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/phy/dp83640.c | 2 | ||||
| -rw-r--r-- | drivers/net/phy/fixed.c | 2 | ||||
| -rw-r--r-- | drivers/net/phy/icplus.c | 55 | ||||
| -rw-r--r-- | drivers/net/phy/mdio-bitbang.c | 9 | ||||
| -rw-r--r-- | drivers/net/phy/mdio-gpio.c | 3 | ||||
| -rw-r--r-- | drivers/net/phy/mdio-octeon.c | 3 | ||||
| -rw-r--r-- | drivers/net/phy/mdio_bus.c | 23 | ||||
| -rw-r--r-- | drivers/net/phy/phy_device.c | 20 | ||||
| -rw-r--r-- | drivers/net/phy/smsc.c | 21 | ||||
| -rw-r--r-- | drivers/net/phy/spi_ks8995.c | 375 |
12 files changed, 452 insertions, 66 deletions
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index a70244306c9..fbdcdf83cbf 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -131,3 +131,7 @@ config MDIO_OCTEON If in doubt, say Y. endif # PHYLIB + +config MICREL_KS8995MA + tristate "Micrel KS8995MA 5-ports 10/100 managed Ethernet switch" + depends on SPI diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 2333215bbb3..e15c83fecbe 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -23,3 +23,4 @@ obj-$(CONFIG_DP83640_PHY) += dp83640.o obj-$(CONFIG_STE10XP) += ste10Xp.o obj-$(CONFIG_MICREL_PHY) += micrel.o obj-$(CONFIG_MDIO_OCTEON) += mdio-octeon.o +obj-$(CONFIG_MICREL_KS8995MA) += spi_ks8995.o diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c index 9663e0ba600..ba3c59147aa 100644 --- a/drivers/net/phy/dp83640.c +++ b/drivers/net/phy/dp83640.c @@ -1159,7 +1159,7 @@ static void rx_timestamp_work(struct work_struct *work) } } spin_unlock_irqrestore(&dp83640->rx_lock, flags); - netif_rx(skb); + netif_rx_ni(skb); } /* Clear out expired time stamps. */ diff --git a/drivers/net/phy/fixed.c b/drivers/net/phy/fixed.c index 1fa4d73c3cc..633680d0828 100644 --- a/drivers/net/phy/fixed.c +++ b/drivers/net/phy/fixed.c @@ -220,7 +220,7 @@ static int __init fixed_mdio_bus_init(void) goto err_mdiobus_reg; } - snprintf(fmb->mii_bus->id, MII_BUS_ID_SIZE, "0"); + snprintf(fmb->mii_bus->id, MII_BUS_ID_SIZE, "fixed-0"); fmb->mii_bus->name = "Fixed MDIO Bus"; fmb->mii_bus->priv = fmb; fmb->mii_bus->parent = &pdev->dev; diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c index c81f136ae67..0856e1b7a84 100644 --- a/drivers/net/phy/icplus.c +++ b/drivers/net/phy/icplus.c @@ -30,16 +30,16 @@ #include <asm/irq.h> #include <asm/uaccess.h> -MODULE_DESCRIPTION("ICPlus IP175C/IP101A/IC1001 PHY drivers"); +MODULE_DESCRIPTION("ICPlus IP175C/IP101A/IP101G/IC1001 PHY drivers"); MODULE_AUTHOR("Michael Barkowski"); MODULE_LICENSE("GPL"); -/* IP101A/IP1001 */ -#define IP10XX_SPEC_CTRL_STATUS 16 /* Spec. Control Register */ -#define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */ -#define IP1001_PHASE_SEL_MASK 3 /* IP1001 RX/TXPHASE_SEL */ -#define IP1001_APS_ON 11 /* IP1001 APS Mode bit */ -#define IP101A_APS_ON 2 /* IP101A APS Mode bit */ +/* IP101A/G - IP1001 */ +#define IP10XX_SPEC_CTRL_STATUS 16 /* Spec. Control Register */ +#define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */ +#define IP1001_PHASE_SEL_MASK 3 /* IP1001 RX/TXPHASE_SEL */ +#define IP1001_APS_ON 11 /* IP1001 APS Mode bit */ +#define IP101A_G_APS_ON 2 /* IP101A/G APS Mode bit */ static int ip175c_config_init(struct phy_device *phydev) { @@ -98,20 +98,24 @@ static int ip175c_config_init(struct phy_device *phydev) static int ip1xx_reset(struct phy_device *phydev) { - int err, bmcr; + int bmcr; /* Software Reset PHY */ bmcr = phy_read(phydev, MII_BMCR); + if (bmcr < 0) + return bmcr; bmcr |= BMCR_RESET; - err = phy_write(phydev, MII_BMCR, bmcr); - if (err < 0) - return err; + bmcr = phy_write(phydev, MII_BMCR, bmcr); + if (bmcr < 0) + return bmcr; do { bmcr = phy_read(phydev, MII_BMCR); + if (bmcr < 0) + return bmcr; } while (bmcr & BMCR_RESET); - return err; + return 0; } static int ip1001_config_init(struct phy_device *phydev) @@ -124,7 +128,10 @@ static int ip1001_config_init(struct phy_device *phydev) /* Enable Auto Power Saving mode */ c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2); + if (c < 0) + return c; c |= IP1001_APS_ON; + c = phy_write(phydev, IP1001_SPEC_CTRL_STATUS_2, c); if (c < 0) return c; @@ -132,14 +139,19 @@ static int ip1001_config_init(struct phy_device *phydev) /* Additional delay (2ns) used to adjust RX clock phase * at RGMII interface */ c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); + if (c < 0) + return c; + c |= IP1001_PHASE_SEL_MASK; c = phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c); + if (c < 0) + return c; } - return c; + return 0; } -static int ip101a_config_init(struct phy_device *phydev) +static int ip101a_g_config_init(struct phy_device *phydev) { int c; @@ -149,7 +161,7 @@ static int ip101a_config_init(struct phy_device *phydev) /* Enable Auto Power Saving mode */ c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); - c |= IP101A_APS_ON; + c |= IP101A_G_APS_ON; return c; } @@ -191,6 +203,7 @@ static struct phy_driver ip1001_driver = { .phy_id_mask = 0x0ffffff0, .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, + .flags = PHY_HAS_INTERRUPT, .config_init = &ip1001_config_init, .config_aneg = &genphy_config_aneg, .read_status = &genphy_read_status, @@ -199,13 +212,14 @@ static struct phy_driver ip1001_driver = { .driver = { .owner = THIS_MODULE,}, }; -static struct phy_driver ip101a_driver = { +static struct phy_driver ip101a_g_driver = { .phy_id = 0x02430c54, - .name = "ICPlus IP101A", + .name = "ICPlus IP101A/G", .phy_id_mask = 0x0ffffff0, .features = PHY_BASIC_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, - .config_init = &ip101a_config_init, + .flags = PHY_HAS_INTERRUPT, + .config_init = &ip101a_g_config_init, .config_aneg = &genphy_config_aneg, .read_status = &genphy_read_status, .suspend = genphy_suspend, @@ -221,7 +235,7 @@ static int __init icplus_init(void) if (ret < 0) return -ENODEV; - ret = phy_driver_register(&ip101a_driver); + ret = phy_driver_register(&ip101a_g_driver); if (ret < 0) return -ENODEV; @@ -231,7 +245,7 @@ static int __init icplus_init(void) static void __exit icplus_exit(void) { phy_driver_unregister(&ip1001_driver); - phy_driver_unregister(&ip101a_driver); + phy_driver_unregister(&ip101a_g_driver); phy_driver_unregister(&ip175c_driver); } @@ -241,6 +255,7 @@ module_exit(icplus_exit); static struct mdio_device_id __maybe_unused icplus_tbl[] = { { 0x02430d80, 0x0ffffff0 }, { 0x02430d90, 0x0ffffff0 }, + { 0x02430c54, 0x0ffffff0 }, { } }; diff --git a/drivers/net/phy/mdio-bitbang.c b/drivers/net/phy/mdio-bitbang.c index 65391891d8c..daec9b05d16 100644 --- a/drivers/net/phy/mdio-bitbang.c +++ b/drivers/net/phy/mdio-bitbang.c @@ -202,6 +202,14 @@ static int mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val) return 0; } +static int mdiobb_reset(struct mii_bus *bus) +{ + struct mdiobb_ctrl *ctrl = bus->priv; + if (ctrl->reset) + ctrl->reset(bus); + return 0; +} + struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl) { struct mii_bus *bus; @@ -214,6 +222,7 @@ struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl) bus->read = mdiobb_read; bus->write = mdiobb_write; + bus->reset = mdiobb_reset; bus->priv = ctrl; return bus; diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c index 2843c90f712..50e8e5e7446 100644 --- a/drivers/net/phy/mdio-gpio.c +++ b/drivers/net/phy/mdio-gpio.c @@ -95,6 +95,7 @@ static struct mii_bus * __devinit mdio_gpio_bus_init(struct device *dev, goto out; bitbang->ctrl.ops = &mdio_gpio_ops; + bitbang->ctrl.reset = pdata->reset; bitbang->mdc = pdata->mdc; bitbang->mdio = pdata->mdio; @@ -115,7 +116,7 @@ static struct mii_bus * __devinit mdio_gpio_bus_init(struct device *dev, if (!new_bus->irq[i]) new_bus->irq[i] = PHY_POLL; - snprintf(new_bus->id, MII_BUS_ID_SIZE, "%x", bus_id); + snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id); if (gpio_request(bitbang->mdc, "mdc")) goto out_free_bus; diff --git a/drivers/net/phy/mdio-octeon.c b/drivers/net/phy/mdio-octeon.c index bd12ba941be..826d961f39f 100644 --- a/drivers/net/phy/mdio-octeon.c +++ b/drivers/net/phy/mdio-octeon.c @@ -118,7 +118,8 @@ static int __devinit octeon_mdiobus_probe(struct platform_device *pdev) bus->mii_bus->priv = bus; bus->mii_bus->irq = bus->phy_irq; bus->mii_bus->name = "mdio-octeon"; - snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%x", bus->unit); + snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", + bus->mii_bus->name, bus->unit); bus->mii_bus->parent = &pdev->dev; bus->mii_bus->read = octeon_mdiobus_read; diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 6c58da2b882..8985cc62cf4 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -37,22 +37,35 @@ #include <asm/uaccess.h> /** - * mdiobus_alloc - allocate a mii_bus structure + * mdiobus_alloc_size - allocate a mii_bus structure + * @size: extra amount of memory to allocate for private storage. + * If non-zero, then bus->priv is points to that memory. * * Description: called by a bus driver to allocate an mii_bus * structure to fill in. */ -struct mii_bus *mdiobus_alloc(void) +struct mii_bus *mdiobus_alloc_size(size_t size) { struct mii_bus *bus; + size_t aligned_size = ALIGN(sizeof(*bus), NETDEV_ALIGN); + size_t alloc_size; - bus = kzalloc(sizeof(*bus), GFP_KERNEL); - if (bus != NULL) + /* If we alloc extra space, it should be aligned */ + if (size) + alloc_size = aligned_size + size; + else + alloc_size = sizeof(*bus); + + bus = kzalloc(alloc_size, GFP_KERNEL); + if (bus) { bus->state = MDIOBUS_ALLOCATED; + if (size) + bus->priv = (void *)bus + aligned_size; + } return bus; } -EXPORT_SYMBOL(mdiobus_alloc); +EXPORT_SYMBOL(mdiobus_alloc_size); /** * mdiobus_release - mii_bus device release callback diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 83a5a5afec6..f320f466f03 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -563,20 +563,9 @@ static int genphy_config_advert(struct phy_device *phydev) if (adv < 0) return adv; - adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | + adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); - if (advertise & ADVERTISED_10baseT_Half) - adv |= ADVERTISE_10HALF; - if (advertise & ADVERTISED_10baseT_Full) - adv |= ADVERTISE_10FULL; - if (advertise & ADVERTISED_100baseT_Half) - adv |= ADVERTISE_100HALF; - if (advertise & ADVERTISED_100baseT_Full) - adv |= ADVERTISE_100FULL; - if (advertise & ADVERTISED_Pause) - adv |= ADVERTISE_PAUSE_CAP; - if (advertise & ADVERTISED_Asym_Pause) - adv |= ADVERTISE_PAUSE_ASYM; + adv |= ethtool_adv_to_mii_adv_t(advertise); if (adv != oldadv) { err = phy_write(phydev, MII_ADVERTISE, adv); @@ -595,10 +584,7 @@ static int genphy_config_advert(struct phy_device *phydev) return adv; adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); - if (advertise & SUPPORTED_1000baseT_Half) - adv |= ADVERTISE_1000HALF; - if (advertise & SUPPORTED_1000baseT_Full) - adv |= ADVERTISE_1000FULL; + adv |= ethtool_adv_to_mii_ctrl1000_t(advertise); if (adv != oldadv) { err = phy_write(phydev, MII_CTRL1000, adv); diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c index 342505c976d..fc3e7e96c88 100644 --- a/drivers/net/phy/smsc.c +++ b/drivers/net/phy/smsc.c @@ -22,26 +22,7 @@ #include <linux/ethtool.h> #include <linux/phy.h> #include <linux/netdevice.h> - -#define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */ -#define MII_LAN83C185_IM 30 /* Interrupt Mask */ -#define MII_LAN83C185_CTRL_STATUS 17 /* Mode/Status Register */ - -#define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */ -#define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */ -#define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */ -#define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */ -#define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */ -#define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */ -#define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */ - -#define MII_LAN83C185_ISF_INT_ALL (0x0e) - -#define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \ - (MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4 | \ - MII_LAN83C185_ISF_INT7) - -#define MII_LAN83C185_EDPWRDOWN (1 << 13) /* EDPWRDOWN */ +#include <linux/smscphy.h> static int smsc_phy_config_intr(struct phy_device *phydev) { diff --git a/drivers/net/phy/spi_ks8995.c b/drivers/net/phy/spi_ks8995.c new file mode 100644 index 00000000000..116a2dd7c87 --- /dev/null +++ b/drivers/net/phy/spi_ks8995.c @@ -0,0 +1,375 @@ +/* + * SPI driver for Micrel/Kendin KS8995M ethernet switch + * + * Copyright (C) 2008 Gabor Juhos <juhosg at openwrt.org> + * + * This file was based on: drivers/spi/at25.c + * Copyright (C) 2006 David Brownell + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/device.h> + +#include <linux/spi/spi.h> + +#define DRV_VERSION "0.1.1" +#define DRV_DESC "Micrel KS8995 Ethernet switch SPI driver" + +/* ------------------------------------------------------------------------ */ + +#define KS8995_REG_ID0 0x00 /* Chip ID0 */ +#define KS8995_REG_ID1 0x01 /* Chip ID1 */ + +#define KS8995_REG_GC0 0x02 /* Global Control 0 */ +#define KS8995_REG_GC1 0x03 /* Global Control 1 */ +#define KS8995_REG_GC2 0x04 /* Global Control 2 */ +#define KS8995_REG_GC3 0x05 /* Global Control 3 */ +#define KS8995_REG_GC4 0x06 /* Global Control 4 */ +#define KS8995_REG_GC5 0x07 /* Global Control 5 */ +#define KS8995_REG_GC6 0x08 /* Global Control 6 */ +#define KS8995_REG_GC7 0x09 /* Global Control 7 */ +#define KS8995_REG_GC8 0x0a /* Global Control 8 */ +#define KS8995_REG_GC9 0x0b /* Global Control 9 */ + +#define KS8995_REG_PC(p, r) ((0x10 * p) + r) /* Port Control */ +#define KS8995_REG_PS(p, r) ((0x10 * p) + r + 0xe) /* Port Status */ + +#define KS8995_REG_TPC0 0x60 /* TOS Priority Control 0 */ +#define KS8995_REG_TPC1 0x61 /* TOS Priority Control 1 */ +#define KS8995_REG_TPC2 0x62 /* TOS Priority Control 2 */ +#define KS8995_REG_TPC3 0x63 /* TOS Priority Control 3 */ +#define KS8995_REG_TPC4 0x64 /* TOS Priority Control 4 */ +#define KS8995_REG_TPC5 0x65 /* TOS Priority Control 5 */ +#define KS8995_REG_TPC6 0x66 /* TOS Priority Control 6 */ +#define KS8995_REG_TPC7 0x67 /* TOS Priority Control 7 */ + +#define KS8995_REG_MAC0 0x68 /* MAC address 0 */ +#define KS8995_REG_MAC1 0x69 /* MAC address 1 */ +#define KS8995_REG_MAC2 0x6a /* MAC address 2 */ +#define KS8995_REG_MAC3 0x6b /* MAC address 3 */ +#define KS8995_REG_MAC4 0x6c /* MAC address 4 */ +#define KS8995_REG_MAC5 0x6d /* MAC address 5 */ + +#define KS8995_REG_IAC0 0x6e /* Indirect Access Control 0 */ +#define KS8995_REG_IAC1 0x6f /* Indirect Access Control 0 */ +#define KS8995_REG_IAD7 0x70 /* Indirect Access Data 7 */ +#define KS8995_REG_IAD6 0x71 /* Indirect Access Data 6 */ +#define KS8995_REG_IAD5 0x72 /* Indirect Access Data 5 */ +#define KS8995_REG_IAD4 0x73 /* Indirect Access Data 4 */ +#define KS8995_REG_IAD3 0x74 /* Indirect Access Data 3 */ +#define KS8995_REG_IAD2 0x75 /* Indirect Access Data 2 */ +#define KS8995_REG_IAD1 0x76 /* Indirect Access Data 1 */ +#define KS8995_REG_IAD0 0x77 /* Indirect Access Data 0 */ + +#define KS8995_REGS_SIZE 0x80 + +#define ID1_CHIPID_M 0xf +#define ID1_CHIPID_S 4 +#define ID1_REVISION_M 0x7 +#define ID1_REVISION_S 1 +#define ID1_START_SW 1 /* start the switch */ + +#define FAMILY_KS8995 0x95 +#define CHIPID_M 0 + +#define KS8995_CMD_WRITE 0x02U +#define KS8995_CMD_READ 0x03U + +#define KS8995_RESET_DELAY 10 /* usec */ + +struct ks8995_pdata { + /* not yet implemented */ +}; + +struct ks8995_switch { + struct spi_device *spi; + struct mutex lock; + struct ks8995_pdata *pdata; +}; + +static inline u8 get_chip_id(u8 val) +{ + return (val >> ID1_CHIPID_S) & ID1_CHIPID_M; +} + +static inline u8 get_chip_rev(u8 val) +{ + return (val >> ID1_REVISION_S) & ID1_REVISION_M; +} + +/* ------------------------------------------------------------------------ */ +static int ks8995_read(struct ks8995_switch *ks, char *buf, + unsigned offset, size_t count) +{ + u8 cmd[2]; + struct spi_transfer t[2]; + struct spi_message m; + int err; + + spi_message_init(&m); + + memset(&t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + t[1].rx_buf = buf; + t[1].len = count; + spi_message_add_tail(&t[1], &m); + + cmd[0] = KS8995_CMD_READ; + cmd[1] = offset; + + mutex_lock(&ks->lock); + err = spi_sync(ks->spi, &m); + mutex_unlock(&ks->lock); + + return err ? err : count; +} + + +static int ks8995_write(struct ks8995_switch *ks, char *buf, + unsigned offset, size_t count) +{ + u8 cmd[2]; + struct spi_transfer t[2]; + struct spi_message m; + int err; + + spi_message_init(&m); + + memset(&t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + t[1].tx_buf = buf; + t[1].len = count; + spi_message_add_tail(&t[1], &m); + + cmd[0] = KS8995_CMD_WRITE; + cmd[1] = offset; + + mutex_lock(&ks->lock); + err = spi_sync(ks->spi, &m); + mutex_unlock(&ks->lock); + + return err ? err : count; +} + +static inline int ks8995_read_reg(struct ks8995_switch *ks, u8 addr, u8 *buf) +{ + return (ks8995_read(ks, buf, addr, 1) != 1); +} + +static inline int ks8995_write_reg(struct ks8995_switch *ks, u8 addr, u8 val) +{ + char buf = val; + + return (ks8995_write(ks, &buf, addr, 1) != 1); +} + +/* ------------------------------------------------------------------------ */ + +static int ks8995_stop(struct ks8995_switch *ks) +{ + return ks8995_write_reg(ks, KS8995_REG_ID1, 0); +} + +static int ks8995_start(struct ks8995_switch *ks) +{ + return ks8995_write_reg(ks, KS8995_REG_ID1, 1); +} + +static int ks8995_reset(struct ks8995_switch *ks) +{ + int err; + + err = ks8995_stop(ks); + if (err) + return err; + + udelay(KS8995_RESET_DELAY); + + return ks8995_start(ks); +} + +/* ------------------------------------------------------------------------ */ + +static ssize_t ks8995_registers_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) +{ + struct device *dev; + struct ks8995_switch *ks8995; + + dev = container_of(kobj, struct device, kobj); + ks8995 = dev_get_drvdata(dev); + + if (unlikely(off > KS8995_REGS_SIZE)) + return 0; + + if ((off + count) > KS8995_REGS_SIZE) + count = KS8995_REGS_SIZE - off; + + if (unlikely(!count)) + return count; + + return ks8995_read(ks8995, buf, off, count); +} + + +static ssize_t ks8995_registers_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) +{ + struct device *dev; + struct ks8995_switch *ks8995; + + dev = container_of(kobj, struct device, kobj); + ks8995 = dev_get_drvdata(dev); + + if (unlikely(off >= KS8995_REGS_SIZE)) + return -EFBIG; + + if ((off + count) > KS8995_REGS_SIZE) + count = KS8995_REGS_SIZE - off; + + if (unlikely(!count)) + return count; + + return ks8995_write(ks8995, buf, off, count); +} + + +static struct bin_attribute ks8995_registers_attr = { + .attr = { + .name = "registers", + .mode = S_IRUSR | S_IWUSR, + }, + .size = KS8995_REGS_SIZE, + .read = ks8995_registers_read, + .write = ks8995_registers_write, +}; + +/* ------------------------------------------------------------------------ */ + +static int __devinit ks8995_probe(struct spi_device *spi) +{ + struct ks8995_switch *ks; + struct ks8995_pdata *pdata; + u8 ids[2]; + int err; + + /* Chip description */ + pdata = spi->dev.platform_data; + + ks = kzalloc(sizeof(*ks), GFP_KERNEL); + if (!ks) { + dev_err(&spi->dev, "no memory for private data\n"); + return -ENOMEM; + } + + mutex_init(&ks->lock); + ks->pdata = pdata; + ks->spi = spi_dev_get(spi); + dev_set_drvdata(&spi->dev, ks); + + spi->mode = SPI_MODE_0; + spi->bits_per_word = 8; + err = spi_setup(spi); + if (err) { + dev_err(&spi->dev, "spi_setup failed, err=%d\n", err); + goto err_drvdata; + } + + err = ks8995_read(ks, ids, KS8995_REG_ID0, sizeof(ids)); + if (err < 0) { + dev_err(&spi->dev, "unable to read id registers, err=%d\n", + err); + goto err_drvdata; + } + + switch (ids[0]) { + case FAMILY_KS8995: + break; + default: + dev_err(&spi->dev, "unknown family id:%02x\n", ids[0]); + err = -ENODEV; + goto err_drvdata; + } + + err = ks8995_reset(ks); + if (err) + goto err_drvdata; + + err = sysfs_create_bin_file(&spi->dev.kobj, &ks8995_registers_attr); + if (err) { + dev_err(&spi->dev, "unable to create sysfs file, err=%d\n", + err); + goto err_drvdata; + } + + dev_info(&spi->dev, "KS89%02X device found, Chip ID:%01x, " + "Revision:%01x\n", ids[0], + get_chip_id(ids[1]), get_chip_rev(ids[1])); + + return 0; + +err_drvdata: + dev_set_drvdata(&spi->dev, NULL); + kfree(ks); + return err; +} + +static int __devexit ks8995_remove(struct spi_device *spi) +{ + struct ks8995_data *ks8995; + + ks8995 = dev_get_drvdata(&spi->dev); + sysfs_remove_bin_file(&spi->dev.kobj, &ks8995_registers_attr); + + dev_set_drvdata(&spi->dev, NULL); + kfree(ks8995); + + return 0; +} + +/* ------------------------------------------------------------------------ */ + +static struct spi_driver ks8995_driver = { + .driver = { + .name = "spi-ks8995", + .bus = &spi_bus_type, + .owner = THIS_MODULE, + }, + .probe = ks8995_probe, + .remove = __devexit_p(ks8995_remove), +}; + +static int __init ks8995_init(void) +{ + printk(KERN_INFO DRV_DESC " version " DRV_VERSION"\n"); + + return spi_register_driver(&ks8995_driver); +} +module_init(ks8995_init); + +static void __exit ks8995_exit(void) +{ + spi_unregister_driver(&ks8995_driver); +} +module_exit(ks8995_exit); + +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>"); +MODULE_LICENSE("GPL v2"); |