diff options
Diffstat (limited to 'drivers/net/wireless/ralink/rt2x00/rt2800soc.c')
| -rw-r--r-- | drivers/net/wireless/ralink/rt2x00/rt2800soc.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800soc.c b/drivers/net/wireless/ralink/rt2x00/rt2800soc.c new file mode 100644 index 000000000000..5c29201b34c8 --- /dev/null +++ b/drivers/net/wireless/ralink/rt2x00/rt2800soc.c @@ -0,0 +1,366 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com> + * Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com> + * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com> + * Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de> + * Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com> + * Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com> + * Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com> + * <http://rt2x00.serialmonkey.com> + */ + +/* Module: rt2800soc + * Abstract: rt2800 WiSoC specific routines. + */ + +#include <linux/etherdevice.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +#include "rt2x00.h" +#include "rt2x00mmio.h" +#include "rt2800.h" +#include "rt2800lib.h" +#include "rt2800mmio.h" + +/* Allow hardware encryption to be disabled. */ +static bool modparam_nohwcrypt; +module_param_named(nohwcrypt, modparam_nohwcrypt, bool, 0444); +MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); + +static bool rt2800soc_hwcrypt_disabled(struct rt2x00_dev *rt2x00dev) +{ + return modparam_nohwcrypt; +} + +static void rt2800soc_disable_radio(struct rt2x00_dev *rt2x00dev) +{ + u32 reg; + + rt2800_disable_radio(rt2x00dev); + rt2x00mmio_register_write(rt2x00dev, PWR_PIN_CFG, 0); + + reg = 0; + if (rt2x00_rt(rt2x00dev, RT3883)) + rt2x00_set_field32(®, TX_PIN_CFG_RFTR_EN, 1); + + rt2x00mmio_register_write(rt2x00dev, TX_PIN_CFG, reg); +} + +static int rt2800soc_set_device_state(struct rt2x00_dev *rt2x00dev, + enum dev_state state) +{ + int retval = 0; + + switch (state) { + case STATE_RADIO_ON: + retval = rt2800mmio_enable_radio(rt2x00dev); + break; + + case STATE_RADIO_OFF: + rt2800soc_disable_radio(rt2x00dev); + break; + + case STATE_RADIO_IRQ_ON: + case STATE_RADIO_IRQ_OFF: + rt2800mmio_toggle_irq(rt2x00dev, state); + break; + + case STATE_DEEP_SLEEP: + case STATE_SLEEP: + case STATE_STANDBY: + case STATE_AWAKE: + /* These states are not supported, but don't report an error */ + retval = 0; + break; + + default: + retval = -ENOTSUPP; + break; + } + + if (unlikely(retval)) + rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n", + state, retval); + + return retval; +} + +static int rt2800soc_read_eeprom(struct rt2x00_dev *rt2x00dev) +{ + void __iomem *base_addr; + + if (!rt2800_read_eeprom_nvmem(rt2x00dev)) + return 0; + + base_addr = ioremap(0x1F040000, EEPROM_SIZE); + if (!base_addr) + return -ENOMEM; + + memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE); + + iounmap(base_addr); + return 0; +} + +/* Firmware functions */ +static char *rt2800soc_get_firmware_name(struct rt2x00_dev *rt2x00dev) +{ + WARN_ON_ONCE(1); + return NULL; +} + +static int rt2800soc_load_firmware(struct rt2x00_dev *rt2x00dev, + const u8 *data, const size_t len) +{ + WARN_ON_ONCE(1); + return 0; +} + +static int rt2800soc_check_firmware(struct rt2x00_dev *rt2x00dev, + const u8 *data, const size_t len) +{ + WARN_ON_ONCE(1); + return 0; +} + +static int rt2800soc_write_firmware(struct rt2x00_dev *rt2x00dev, + const u8 *data, const size_t len) +{ + WARN_ON_ONCE(1); + return 0; +} + +#ifdef CONFIG_PM +static int rt2800soc_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct ieee80211_hw *hw = platform_get_drvdata(pdev); + struct rt2x00_dev *rt2x00dev = hw->priv; + + return rt2x00lib_suspend(rt2x00dev); +} + +static int rt2800soc_resume(struct platform_device *pdev) +{ + struct ieee80211_hw *hw = platform_get_drvdata(pdev); + struct rt2x00_dev *rt2x00dev = hw->priv; + + return rt2x00lib_resume(rt2x00dev); +} +#endif /* CONFIG_PM */ + +static const struct ieee80211_ops rt2800soc_mac80211_ops = { + .add_chanctx = ieee80211_emulate_add_chanctx, + .remove_chanctx = ieee80211_emulate_remove_chanctx, + .change_chanctx = ieee80211_emulate_change_chanctx, + .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, + .tx = rt2x00mac_tx, + .wake_tx_queue = ieee80211_handle_wake_tx_queue, + .start = rt2x00mac_start, + .stop = rt2x00mac_stop, + .add_interface = rt2x00mac_add_interface, + .remove_interface = rt2x00mac_remove_interface, + .config = rt2x00mac_config, + .configure_filter = rt2x00mac_configure_filter, + .set_key = rt2x00mac_set_key, + .sw_scan_start = rt2x00mac_sw_scan_start, + .sw_scan_complete = rt2x00mac_sw_scan_complete, + .get_stats = rt2x00mac_get_stats, + .get_key_seq = rt2800_get_key_seq, + .set_rts_threshold = rt2800_set_rts_threshold, + .sta_add = rt2800_sta_add, + .sta_remove = rt2800_sta_remove, + .bss_info_changed = rt2x00mac_bss_info_changed, + .conf_tx = rt2800_conf_tx, + .get_tsf = rt2800_get_tsf, + .rfkill_poll = rt2x00mac_rfkill_poll, + .ampdu_action = rt2800_ampdu_action, + .flush = rt2x00mac_flush, + .get_survey = rt2800_get_survey, + .get_ringparam = rt2x00mac_get_ringparam, + .tx_frames_pending = rt2x00mac_tx_frames_pending, + .reconfig_complete = rt2x00mac_reconfig_complete, +}; + +static const struct rt2800_ops rt2800soc_rt2800_ops = { + .register_read = rt2x00mmio_register_read, + .register_read_lock = rt2x00mmio_register_read, /* same for SoCs */ + .register_write = rt2x00mmio_register_write, + .register_write_lock = rt2x00mmio_register_write, /* same for SoCs */ + .register_multiread = rt2x00mmio_register_multiread, + .register_multiwrite = rt2x00mmio_register_multiwrite, + .regbusy_read = rt2x00mmio_regbusy_read, + .read_eeprom = rt2800soc_read_eeprom, + .hwcrypt_disabled = rt2800soc_hwcrypt_disabled, + .drv_write_firmware = rt2800soc_write_firmware, + .drv_init_registers = rt2800mmio_init_registers, + .drv_get_txwi = rt2800mmio_get_txwi, + .drv_get_dma_done = rt2800mmio_get_dma_done, +}; + +static const struct rt2x00lib_ops rt2800soc_rt2x00_ops = { + .irq_handler = rt2800mmio_interrupt, + .txstatus_tasklet = rt2800mmio_txstatus_tasklet, + .pretbtt_tasklet = rt2800mmio_pretbtt_tasklet, + .tbtt_tasklet = rt2800mmio_tbtt_tasklet, + .rxdone_tasklet = rt2800mmio_rxdone_tasklet, + .autowake_tasklet = rt2800mmio_autowake_tasklet, + .probe_hw = rt2800mmio_probe_hw, + .get_firmware_name = rt2800soc_get_firmware_name, + .check_firmware = rt2800soc_check_firmware, + .load_firmware = rt2800soc_load_firmware, + .initialize = rt2x00mmio_initialize, + .uninitialize = rt2x00mmio_uninitialize, + .get_entry_state = rt2800mmio_get_entry_state, + .clear_entry = rt2800mmio_clear_entry, + .set_device_state = rt2800soc_set_device_state, + .rfkill_poll = rt2800_rfkill_poll, + .link_stats = rt2800_link_stats, + .reset_tuner = rt2800_reset_tuner, + .link_tuner = rt2800_link_tuner, + .gain_calibration = rt2800_gain_calibration, + .vco_calibration = rt2800_vco_calibration, + .watchdog = rt2800_watchdog, + .start_queue = rt2800mmio_start_queue, + .kick_queue = rt2800mmio_kick_queue, + .stop_queue = rt2800mmio_stop_queue, + .flush_queue = rt2800mmio_flush_queue, + .write_tx_desc = rt2800mmio_write_tx_desc, + .write_tx_data = rt2800_write_tx_data, + .write_beacon = rt2800_write_beacon, + .clear_beacon = rt2800_clear_beacon, + .fill_rxdone = rt2800mmio_fill_rxdone, + .config_shared_key = rt2800_config_shared_key, + .config_pairwise_key = rt2800_config_pairwise_key, + .config_filter = rt2800_config_filter, + .config_intf = rt2800_config_intf, + .config_erp = rt2800_config_erp, + .config_ant = rt2800_config_ant, + .config = rt2800_config, + .pre_reset_hw = rt2800_pre_reset_hw, +}; + +static const struct rt2x00_ops rt2800soc_ops = { + .name = KBUILD_MODNAME, + .drv_data_size = sizeof(struct rt2800_drv_data), + .max_ap_intf = 8, + .eeprom_size = EEPROM_SIZE, + .rf_size = RF_SIZE, + .tx_queues = NUM_TX_QUEUES, + .queue_init = rt2800mmio_queue_init, + .lib = &rt2800soc_rt2x00_ops, + .drv = &rt2800soc_rt2800_ops, + .hw = &rt2800soc_mac80211_ops, +#ifdef CONFIG_RT2X00_LIB_DEBUGFS + .debugfs = &rt2800_rt2x00debug, +#endif /* CONFIG_RT2X00_LIB_DEBUGFS */ +}; + +static int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops) +{ + struct rt2x00_dev *rt2x00dev; + struct ieee80211_hw *hw; + void __iomem *mem; + struct clk *clk; + __le16 *eeprom; + int retval; + u32 *rf; + int irq; + + mem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(mem)) + return PTR_ERR(mem); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + clk = devm_clk_get_optional(&pdev->dev, NULL); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + eeprom = devm_kzalloc(&pdev->dev, ops->eeprom_size, GFP_KERNEL); + if (!eeprom) + return -ENOMEM; + + rf = devm_kzalloc(&pdev->dev, ops->rf_size, GFP_KERNEL); + if (!rf) + return -ENOMEM; + + hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); + if (!hw) + return dev_err_probe(&pdev->dev, -ENOMEM, "Failed to allocate hardware"); + + platform_set_drvdata(pdev, hw); + + rt2x00dev = hw->priv; + rt2x00dev->dev = &pdev->dev; + rt2x00dev->ops = ops; + rt2x00dev->hw = hw; + rt2x00dev->irq = irq; + rt2x00dev->clk = clk; + rt2x00dev->eeprom = eeprom; + rt2x00dev->rf = rf; + rt2x00dev->name = pdev->dev.driver->name; + rt2x00dev->csr.base = mem; + + rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC); + + retval = rt2x00lib_probe_dev(rt2x00dev); + if (retval) + goto exit_free_device; + + return 0; + +exit_free_device: + ieee80211_free_hw(hw); + + return retval; +} + +static int rt2800soc_probe(struct platform_device *pdev) +{ + return rt2x00soc_probe(pdev, &rt2800soc_ops); +} + +static void rt2800soc_remove(struct platform_device *pdev) +{ + struct ieee80211_hw *hw = platform_get_drvdata(pdev); + struct rt2x00_dev *rt2x00dev = hw->priv; + + /* + * Free all allocated data. + */ + rt2x00lib_remove_dev(rt2x00dev); + ieee80211_free_hw(hw); +} + +static const struct of_device_id rt2880_wmac_match[] = { + { .compatible = "ralink,rt2880-wifi" }, + {}, +}; +MODULE_DEVICE_TABLE(of, rt2880_wmac_match); + +static struct platform_driver rt2800soc_driver = { + .driver = { + .name = "rt2800_wmac", + .of_match_table = rt2880_wmac_match, + }, + .probe = rt2800soc_probe, + .remove = rt2800soc_remove, +#ifdef CONFIG_PM + .suspend = rt2800soc_suspend, + .resume = rt2800soc_resume, +#endif +}; + +module_platform_driver(rt2800soc_driver); + +MODULE_AUTHOR(DRV_PROJECT); +MODULE_VERSION(DRV_VERSION); +MODULE_DESCRIPTION("Ralink WiSoC Wireless LAN driver."); +MODULE_LICENSE("GPL"); |