diff options
Diffstat (limited to 'kernel/drivers/media/pci/pt3')
| -rw-r--r-- | kernel/drivers/media/pci/pt3/Kconfig | 10 | ||||
| -rw-r--r-- | kernel/drivers/media/pci/pt3/Makefile | 8 | ||||
| -rw-r--r-- | kernel/drivers/media/pci/pt3/pt3.c | 873 | ||||
| -rw-r--r-- | kernel/drivers/media/pci/pt3/pt3.h | 186 | ||||
| -rw-r--r-- | kernel/drivers/media/pci/pt3/pt3_dma.c | 225 | ||||
| -rw-r--r-- | kernel/drivers/media/pci/pt3/pt3_i2c.c | 240 |
6 files changed, 1542 insertions, 0 deletions
diff --git a/kernel/drivers/media/pci/pt3/Kconfig b/kernel/drivers/media/pci/pt3/Kconfig new file mode 100644 index 000000000..16c208ae0 --- /dev/null +++ b/kernel/drivers/media/pci/pt3/Kconfig @@ -0,0 +1,10 @@ +config DVB_PT3 + tristate "Earthsoft PT3 cards" + depends on DVB_CORE && PCI && I2C + select DVB_TC90522 if MEDIA_SUBDRV_AUTOSELECT + select MEDIA_TUNER_QM1D1C0042 if MEDIA_SUBDRV_AUTOSELECT + select MEDIA_TUNER_MXL301RF if MEDIA_SUBDRV_AUTOSELECT + help + Support for Earthsoft PT3 PCIe cards. + + Say Y or M if you own such a device and want to use it. diff --git a/kernel/drivers/media/pci/pt3/Makefile b/kernel/drivers/media/pci/pt3/Makefile new file mode 100644 index 000000000..396f146b1 --- /dev/null +++ b/kernel/drivers/media/pci/pt3/Makefile @@ -0,0 +1,8 @@ + +earth-pt3-objs += pt3.o pt3_i2c.o pt3_dma.o + +obj-$(CONFIG_DVB_PT3) += earth-pt3.o + +ccflags-y += -Idrivers/media/dvb-core +ccflags-y += -Idrivers/media/dvb-frontends +ccflags-y += -Idrivers/media/tuners diff --git a/kernel/drivers/media/pci/pt3/pt3.c b/kernel/drivers/media/pci/pt3/pt3.c new file mode 100644 index 000000000..7a37e8fe2 --- /dev/null +++ b/kernel/drivers/media/pci/pt3/pt3.c @@ -0,0 +1,873 @@ +/* + * Earthsoft PT3 driver + * + * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/freezer.h> +#include <linux/kernel.h> +#include <linux/kthread.h> +#include <linux/mutex.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/string.h> + +#include "dmxdev.h" +#include "dvbdev.h" +#include "dvb_demux.h" +#include "dvb_frontend.h" + +#include "pt3.h" + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +static bool one_adapter; +module_param(one_adapter, bool, 0444); +MODULE_PARM_DESC(one_adapter, "Place FE's together under one adapter."); + +static int num_bufs = 4; +module_param(num_bufs, int, 0444); +MODULE_PARM_DESC(num_bufs, "Number of DMA buffer (188KiB) per FE."); + + +static const struct i2c_algorithm pt3_i2c_algo = { + .master_xfer = &pt3_i2c_master_xfer, + .functionality = &pt3_i2c_functionality, +}; + +static const struct pt3_adap_config adap_conf[PT3_NUM_FE] = { + { + .demod_info = { + I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x11), + }, + .tuner_info = { + I2C_BOARD_INFO("qm1d1c0042", 0x63), + }, + .tuner_cfg.qm1d1c0042 = { + .lpf = 1, + }, + .init_freq = 1049480 - 300, + }, + { + .demod_info = { + I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x10), + }, + .tuner_info = { + I2C_BOARD_INFO("mxl301rf", 0x62), + }, + .init_freq = 515142857, + }, + { + .demod_info = { + I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x13), + }, + .tuner_info = { + I2C_BOARD_INFO("qm1d1c0042", 0x60), + }, + .tuner_cfg.qm1d1c0042 = { + .lpf = 1, + }, + .init_freq = 1049480 + 300, + }, + { + .demod_info = { + I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x12), + }, + .tuner_info = { + I2C_BOARD_INFO("mxl301rf", 0x61), + }, + .init_freq = 521142857, + }, +}; + + +struct reg_val { + u8 reg; + u8 val; +}; + +static int +pt3_demod_write(struct pt3_adapter *adap, const struct reg_val *data, int num) +{ + struct i2c_msg msg; + int i, ret; + + ret = 0; + msg.addr = adap->i2c_demod->addr; + msg.flags = 0; + msg.len = 2; + for (i = 0; i < num; i++) { + msg.buf = (u8 *)&data[i]; + ret = i2c_transfer(adap->i2c_demod->adapter, &msg, 1); + if (ret == 0) + ret = -EREMOTE; + if (ret < 0) + return ret; + } + return 0; +} + +static inline void pt3_lnb_ctrl(struct pt3_board *pt3, bool on) +{ + iowrite32((on ? 0x0f : 0x0c), pt3->regs[0] + REG_SYSTEM_W); +} + +static inline struct pt3_adapter *pt3_find_adapter(struct dvb_frontend *fe) +{ + struct pt3_board *pt3; + int i; + + if (one_adapter) { + pt3 = fe->dvb->priv; + for (i = 0; i < PT3_NUM_FE; i++) + if (pt3->adaps[i]->fe == fe) + return pt3->adaps[i]; + } + return container_of(fe->dvb, struct pt3_adapter, dvb_adap); +} + +/* + * all 4 tuners in PT3 are packaged in a can module (Sharp VA4M6JC2103). + * it seems that they share the power lines and Amp power line and + * adaps[3] controls those powers. + */ +static int +pt3_set_tuner_power(struct pt3_board *pt3, bool tuner_on, bool amp_on) +{ + struct reg_val rv = { 0x1e, 0x99 }; + + if (tuner_on) + rv.val |= 0x40; + if (amp_on) + rv.val |= 0x04; + return pt3_demod_write(pt3->adaps[PT3_NUM_FE - 1], &rv, 1); +} + +static int pt3_set_lna(struct dvb_frontend *fe) +{ + struct pt3_adapter *adap; + struct pt3_board *pt3; + u32 val; + int ret; + + /* LNA is shared btw. 2 TERR-tuners */ + + adap = pt3_find_adapter(fe); + val = fe->dtv_property_cache.lna; + if (val == LNA_AUTO || val == adap->cur_lna) + return 0; + + pt3 = adap->dvb_adap.priv; + if (mutex_lock_interruptible(&pt3->lock)) + return -ERESTARTSYS; + if (val) + pt3->lna_on_cnt++; + else + pt3->lna_on_cnt--; + + if (val && pt3->lna_on_cnt <= 1) { + pt3->lna_on_cnt = 1; + ret = pt3_set_tuner_power(pt3, true, true); + } else if (!val && pt3->lna_on_cnt <= 0) { + pt3->lna_on_cnt = 0; + ret = pt3_set_tuner_power(pt3, true, false); + } else + ret = 0; + mutex_unlock(&pt3->lock); + adap->cur_lna = (val != 0); + return ret; +} + +static int pt3_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt) +{ + struct pt3_adapter *adap; + struct pt3_board *pt3; + bool on; + + /* LNB power is shared btw. 2 SAT-tuners */ + + adap = pt3_find_adapter(fe); + on = (volt != SEC_VOLTAGE_OFF); + if (on == adap->cur_lnb) + return 0; + adap->cur_lnb = on; + pt3 = adap->dvb_adap.priv; + if (mutex_lock_interruptible(&pt3->lock)) + return -ERESTARTSYS; + if (on) + pt3->lnb_on_cnt++; + else + pt3->lnb_on_cnt--; + + if (on && pt3->lnb_on_cnt <= 1) { + pt3->lnb_on_cnt = 1; + pt3_lnb_ctrl(pt3, true); + } else if (!on && pt3->lnb_on_cnt <= 0) { + pt3->lnb_on_cnt = 0; + pt3_lnb_ctrl(pt3, false); + } + mutex_unlock(&pt3->lock); + return 0; +} + +/* register values used in pt3_fe_init() */ + +static const struct reg_val init0_sat[] = { + { 0x03, 0x01 }, + { 0x1e, 0x10 }, +}; +static const struct reg_val init0_ter[] = { + { 0x01, 0x40 }, + { 0x1c, 0x10 }, +}; +static const struct reg_val cfg_sat[] = { + { 0x1c, 0x15 }, + { 0x1f, 0x04 }, +}; +static const struct reg_val cfg_ter[] = { + { 0x1d, 0x01 }, +}; + +/* + * pt3_fe_init: initialize demod sub modules and ISDB-T tuners all at once. + * + * As for demod IC (TC90522) and ISDB-T tuners (MxL301RF), + * the i2c sequences for init'ing them are not public and hidden in a ROM, + * and include the board specific configurations as well. + * They are stored in a lump and cannot be taken out / accessed separately, + * thus cannot be moved to the FE/tuner driver. + */ +static int pt3_fe_init(struct pt3_board *pt3) +{ + int i, ret; + struct dvb_frontend *fe; + + pt3_i2c_reset(pt3); + ret = pt3_init_all_demods(pt3); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, "Failed to init demod chips\n"); + return ret; + } + + /* additional config? */ + for (i = 0; i < PT3_NUM_FE; i++) { + fe = pt3->adaps[i]->fe; + + if (fe->ops.delsys[0] == SYS_ISDBS) + ret = pt3_demod_write(pt3->adaps[i], + init0_sat, ARRAY_SIZE(init0_sat)); + else + ret = pt3_demod_write(pt3->adaps[i], + init0_ter, ARRAY_SIZE(init0_ter)); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, + "demod[%d] failed in init sequence0\n", i); + return ret; + } + ret = fe->ops.init(fe); + if (ret < 0) + return ret; + } + + usleep_range(2000, 4000); + ret = pt3_set_tuner_power(pt3, true, false); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n"); + return ret; + } + + /* output pin configuration */ + for (i = 0; i < PT3_NUM_FE; i++) { + fe = pt3->adaps[i]->fe; + if (fe->ops.delsys[0] == SYS_ISDBS) + ret = pt3_demod_write(pt3->adaps[i], + cfg_sat, ARRAY_SIZE(cfg_sat)); + else + ret = pt3_demod_write(pt3->adaps[i], + cfg_ter, ARRAY_SIZE(cfg_ter)); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, + "demod[%d] failed in init sequence1\n", i); + return ret; + } + } + usleep_range(4000, 6000); + + for (i = 0; i < PT3_NUM_FE; i++) { + fe = pt3->adaps[i]->fe; + if (fe->ops.delsys[0] != SYS_ISDBS) + continue; + /* init and wake-up ISDB-S tuners */ + ret = fe->ops.tuner_ops.init(fe); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, + "Failed to init SAT-tuner[%d]\n", i); + return ret; + } + } + ret = pt3_init_all_mxl301rf(pt3); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, "Failed to init TERR-tuners\n"); + return ret; + } + + ret = pt3_set_tuner_power(pt3, true, true); + if (ret < 0) { + dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n"); + return ret; + } + + /* Wake up all tuners and make an initial tuning, + * in order to avoid interference among the tuners in the module, + * according to the doc from the manufacturer. + */ + for (i = 0; i < PT3_NUM_FE; i++) { + fe = pt3->adaps[i]->fe; + ret = 0; + if (fe->ops.delsys[0] == SYS_ISDBT) + ret = fe->ops.tuner_ops.init(fe); + /* set only when called from pt3_probe(), not resume() */ + if (ret == 0 && fe->dtv_property_cache.frequency == 0) { + fe->dtv_property_cache.frequency = + adap_conf[i].init_freq; + ret = fe->ops.tuner_ops.set_params(fe); + } + if (ret < 0) { + dev_warn(&pt3->pdev->dev, + "Failed in initial tuning of tuner[%d]\n", i); + return ret; + } + } + + /* and sleep again, waiting to be opened by users. */ + for (i = 0; i < PT3_NUM_FE; i++) { + fe = pt3->adaps[i]->fe; + if (fe->ops.tuner_ops.sleep) + ret = fe->ops.tuner_ops.sleep(fe); + if (ret < 0) + break; + if (fe->ops.sleep) + ret = fe->ops.sleep(fe); + if (ret < 0) + break; + if (fe->ops.delsys[0] == SYS_ISDBS) + fe->ops.set_voltage = &pt3_set_voltage; + else + fe->ops.set_lna = &pt3_set_lna; + } + if (i < PT3_NUM_FE) { + dev_warn(&pt3->pdev->dev, "FE[%d] failed to standby\n", i); + return ret; + } + return 0; +} + + +static int pt3_attach_fe(struct pt3_board *pt3, int i) +{ + struct i2c_board_info info; + struct tc90522_config cfg; + struct i2c_client *cl; + struct dvb_adapter *dvb_adap; + int ret; + + info = adap_conf[i].demod_info; + cfg = adap_conf[i].demod_cfg; + cfg.tuner_i2c = NULL; + info.platform_data = &cfg; + + ret = -ENODEV; + request_module("tc90522"); + cl = i2c_new_device(&pt3->i2c_adap, &info); + if (!cl || !cl->dev.driver) + return -ENODEV; + pt3->adaps[i]->i2c_demod = cl; + if (!try_module_get(cl->dev.driver->owner)) + goto err_demod_i2c_unregister_device; + + if (!strncmp(cl->name, TC90522_I2C_DEV_SAT, sizeof(cl->name))) { + struct qm1d1c0042_config tcfg; + + tcfg = adap_conf[i].tuner_cfg.qm1d1c0042; + tcfg.fe = cfg.fe; + info = adap_conf[i].tuner_info; + info.platform_data = &tcfg; + request_module("qm1d1c0042"); + cl = i2c_new_device(cfg.tuner_i2c, &info); + } else { + struct mxl301rf_config tcfg; + + tcfg = adap_conf[i].tuner_cfg.mxl301rf; + tcfg.fe = cfg.fe; + info = adap_conf[i].tuner_info; + info.platform_data = &tcfg; + request_module("mxl301rf"); + cl = i2c_new_device(cfg.tuner_i2c, &info); + } + if (!cl || !cl->dev.driver) + goto err_demod_module_put; + pt3->adaps[i]->i2c_tuner = cl; + if (!try_module_get(cl->dev.driver->owner)) + goto err_tuner_i2c_unregister_device; + + dvb_adap = &pt3->adaps[one_adapter ? 0 : i]->dvb_adap; + ret = dvb_register_frontend(dvb_adap, cfg.fe); + if (ret < 0) + goto err_tuner_module_put; + pt3->adaps[i]->fe = cfg.fe; + return 0; + +err_tuner_module_put: + module_put(pt3->adaps[i]->i2c_tuner->dev.driver->owner); +err_tuner_i2c_unregister_device: + i2c_unregister_device(pt3->adaps[i]->i2c_tuner); +err_demod_module_put: + module_put(pt3->adaps[i]->i2c_demod->dev.driver->owner); +err_demod_i2c_unregister_device: + i2c_unregister_device(pt3->adaps[i]->i2c_demod); + + return ret; +} + + +static int pt3_fetch_thread(void *data) +{ + struct pt3_adapter *adap = data; + ktime_t delay; + bool was_frozen; + +#define PT3_INITIAL_BUF_DROPS 4 +#define PT3_FETCH_DELAY 10 +#define PT3_FETCH_DELAY_DELTA 2 + + pt3_init_dmabuf(adap); + adap->num_discard = PT3_INITIAL_BUF_DROPS; + + dev_dbg(adap->dvb_adap.device, "PT3: [%s] started\n", + adap->thread->comm); + set_freezable(); + while (!kthread_freezable_should_stop(&was_frozen)) { + if (was_frozen) + adap->num_discard = PT3_INITIAL_BUF_DROPS; + + pt3_proc_dma(adap); + + delay = ktime_set(0, PT3_FETCH_DELAY * NSEC_PER_MSEC); + set_current_state(TASK_UNINTERRUPTIBLE); + freezable_schedule_hrtimeout_range(&delay, + PT3_FETCH_DELAY_DELTA * NSEC_PER_MSEC, + HRTIMER_MODE_REL); + } + dev_dbg(adap->dvb_adap.device, "PT3: [%s] exited\n", + adap->thread->comm); + adap->thread = NULL; + return 0; +} + +static int pt3_start_streaming(struct pt3_adapter *adap) +{ + struct task_struct *thread; + + /* start fetching thread */ + thread = kthread_run(pt3_fetch_thread, adap, "pt3-ad%i-dmx%i", + adap->dvb_adap.num, adap->dmxdev.dvbdev->id); + if (IS_ERR(thread)) { + int ret = PTR_ERR(thread); + + dev_warn(adap->dvb_adap.device, + "PT3 (adap:%d, dmx:%d): failed to start kthread\n", + adap->dvb_adap.num, adap->dmxdev.dvbdev->id); + return ret; + } + adap->thread = thread; + + return pt3_start_dma(adap); +} + +static int pt3_stop_streaming(struct pt3_adapter *adap) +{ + int ret; + + ret = pt3_stop_dma(adap); + if (ret) + dev_warn(adap->dvb_adap.device, + "PT3: failed to stop streaming of adap:%d/FE:%d\n", + adap->dvb_adap.num, adap->fe->id); + + /* kill the fetching thread */ + ret = kthread_stop(adap->thread); + return ret; +} + +static int pt3_start_feed(struct dvb_demux_feed *feed) +{ + struct pt3_adapter *adap; + + if (signal_pending(current)) + return -EINTR; + + adap = container_of(feed->demux, struct pt3_adapter, demux); + adap->num_feeds++; + if (adap->thread) + return 0; + if (adap->num_feeds != 1) { + dev_warn(adap->dvb_adap.device, + "%s: unmatched start/stop_feed in adap:%i/dmx:%i\n", + __func__, adap->dvb_adap.num, adap->dmxdev.dvbdev->id); + adap->num_feeds = 1; + } + + return pt3_start_streaming(adap); + +} + +static int pt3_stop_feed(struct dvb_demux_feed *feed) +{ + struct pt3_adapter *adap; + + adap = container_of(feed->demux, struct pt3_adapter, demux); + + adap->num_feeds--; + if (adap->num_feeds > 0 || !adap->thread) + return 0; + adap->num_feeds = 0; + + return pt3_stop_streaming(adap); +} + + +static int pt3_alloc_adapter(struct pt3_board *pt3, int index) +{ + int ret; + struct pt3_adapter *adap; + struct dvb_adapter *da; + + adap = kzalloc(sizeof(*adap), GFP_KERNEL); + if (!adap) + return -ENOMEM; + + pt3->adaps[index] = adap; + adap->adap_idx = index; + + if (index == 0 || !one_adapter) { + ret = dvb_register_adapter(&adap->dvb_adap, "PT3 DVB", + THIS_MODULE, &pt3->pdev->dev, adapter_nr); + if (ret < 0) { + dev_err(&pt3->pdev->dev, + "failed to register adapter dev\n"); + goto err_mem; + } + da = &adap->dvb_adap; + } else + da = &pt3->adaps[0]->dvb_adap; + + adap->dvb_adap.priv = pt3; + adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; + adap->demux.priv = adap; + adap->demux.feednum = 256; + adap->demux.filternum = 256; + adap->demux.start_feed = pt3_start_feed; + adap->demux.stop_feed = pt3_stop_feed; + ret = dvb_dmx_init(&adap->demux); + if (ret < 0) { + dev_err(&pt3->pdev->dev, "failed to init dmx dev\n"); + goto err_adap; + } + + adap->dmxdev.filternum = 256; + adap->dmxdev.demux = &adap->demux.dmx; + ret = dvb_dmxdev_init(&adap->dmxdev, da); + if (ret < 0) { + dev_err(&pt3->pdev->dev, "failed to init dmxdev\n"); + goto err_demux; + } + + ret = pt3_alloc_dmabuf(adap); + if (ret) { + dev_err(&pt3->pdev->dev, "failed to alloc DMA buffers\n"); + goto err_dmabuf; + } + + return 0; + +err_dmabuf: + pt3_free_dmabuf(adap); + dvb_dmxdev_release(&adap->dmxdev); +err_demux: + dvb_dmx_release(&adap->demux); +err_adap: + if (index == 0 || !one_adapter) + dvb_unregister_adapter(da); +err_mem: + kfree(adap); + pt3->adaps[index] = NULL; + return ret; +} + +static void pt3_cleanup_adapter(struct pt3_board *pt3, int index) +{ + struct pt3_adapter *adap; + struct dmx_demux *dmx; + + adap = pt3->adaps[index]; + if (adap == NULL) + return; + + /* stop demux kthread */ + if (adap->thread) + pt3_stop_streaming(adap); + + dmx = &adap->demux.dmx; + dmx->close(dmx); + if (adap->fe) { + adap->fe->callback = NULL; + if (adap->fe->frontend_priv) + dvb_unregister_frontend(adap->fe); + if (adap->i2c_tuner) { + module_put(adap->i2c_tuner->dev.driver->owner); + i2c_unregister_device(adap->i2c_tuner); + } + if (adap->i2c_demod) { + module_put(adap->i2c_demod->dev.driver->owner); + i2c_unregister_device(adap->i2c_demod); + } + } + pt3_free_dmabuf(adap); + dvb_dmxdev_release(&adap->dmxdev); + dvb_dmx_release(&adap->demux); + if (index == 0 || !one_adapter) + dvb_unregister_adapter(&adap->dvb_adap); + kfree(adap); + pt3->adaps[index] = NULL; +} + +#ifdef CONFIG_PM_SLEEP + +static int pt3_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct pt3_board *pt3 = pci_get_drvdata(pdev); + int i; + struct pt3_adapter *adap; + + for (i = 0; i < PT3_NUM_FE; i++) { + adap = pt3->adaps[i]; + if (adap->num_feeds > 0) + pt3_stop_dma(adap); + dvb_frontend_suspend(adap->fe); + pt3_free_dmabuf(adap); + } + + pt3_lnb_ctrl(pt3, false); + pt3_set_tuner_power(pt3, false, false); + return 0; +} + +static int pt3_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct pt3_board *pt3 = pci_get_drvdata(pdev); + int i, ret; + struct pt3_adapter *adap; + + ret = pt3_fe_init(pt3); + if (ret) + return ret; + + if (pt3->lna_on_cnt > 0) + pt3_set_tuner_power(pt3, true, true); + if (pt3->lnb_on_cnt > 0) + pt3_lnb_ctrl(pt3, true); + + for (i = 0; i < PT3_NUM_FE; i++) { + adap = pt3->adaps[i]; + dvb_frontend_resume(adap->fe); + ret = pt3_alloc_dmabuf(adap); + if (ret) { + dev_err(&pt3->pdev->dev, "failed to alloc DMA bufs\n"); + continue; + } + if (adap->num_feeds > 0) + pt3_start_dma(adap); + } + + return 0; +} + +#endif /* CONFIG_PM_SLEEP */ + + +static void pt3_remove(struct pci_dev *pdev) +{ + struct pt3_board *pt3; + int i; + + pt3 = pci_get_drvdata(pdev); + for (i = PT3_NUM_FE - 1; i >= 0; i--) + pt3_cleanup_adapter(pt3, i); + i2c_del_adapter(&pt3->i2c_adap); + kfree(pt3->i2c_buf); + pci_iounmap(pt3->pdev, pt3->regs[0]); + pci_iounmap(pt3->pdev, pt3->regs[1]); + pci_release_regions(pdev); + pci_disable_device(pdev); + kfree(pt3); +} + +static int pt3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + u8 rev; + u32 ver; + int i, ret; + struct pt3_board *pt3; + struct i2c_adapter *i2c; + + if (pci_read_config_byte(pdev, PCI_REVISION_ID, &rev) || rev != 1) + return -ENODEV; + + ret = pci_enable_device(pdev); + if (ret < 0) + return -ENODEV; + pci_set_master(pdev); + + ret = pci_request_regions(pdev, DRV_NAME); + if (ret < 0) + goto err_disable_device; + + ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); + if (ret == 0) + dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); + else { + ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret == 0) + dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + else { + dev_err(&pdev->dev, "Failed to set DMA mask\n"); + goto err_release_regions; + } + dev_info(&pdev->dev, "Use 32bit DMA\n"); + } + + pt3 = kzalloc(sizeof(*pt3), GFP_KERNEL); + if (!pt3) { + ret = -ENOMEM; + goto err_release_regions; + } + pci_set_drvdata(pdev, pt3); + pt3->pdev = pdev; + mutex_init(&pt3->lock); + pt3->regs[0] = pci_ioremap_bar(pdev, 0); + pt3->regs[1] = pci_ioremap_bar(pdev, 2); + if (pt3->regs[0] == NULL || pt3->regs[1] == NULL) { + dev_err(&pdev->dev, "Failed to ioremap\n"); + ret = -ENOMEM; + goto err_kfree; + } + + ver = ioread32(pt3->regs[0] + REG_VERSION); + if ((ver >> 16) != 0x0301) { + dev_warn(&pdev->dev, "PT%d, I/F-ver.:%d not supported\n", + ver >> 24, (ver & 0x00ff0000) >> 16); + ret = -ENODEV; + goto err_iounmap; + } + + pt3->num_bufs = clamp_val(num_bufs, MIN_DATA_BUFS, MAX_DATA_BUFS); + + pt3->i2c_buf = kmalloc(sizeof(*pt3->i2c_buf), GFP_KERNEL); + if (pt3->i2c_buf == NULL) { + ret = -ENOMEM; + goto err_iounmap; + } + i2c = &pt3->i2c_adap; + i2c->owner = THIS_MODULE; + i2c->algo = &pt3_i2c_algo; + i2c->algo_data = NULL; + i2c->dev.parent = &pdev->dev; + strlcpy(i2c->name, DRV_NAME, sizeof(i2c->name)); + i2c_set_adapdata(i2c, pt3); + ret = i2c_add_adapter(i2c); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to add i2c adapter\n"); + goto err_i2cbuf; + } + + for (i = 0; i < PT3_NUM_FE; i++) { + ret = pt3_alloc_adapter(pt3, i); + if (ret < 0) + break; + + ret = pt3_attach_fe(pt3, i); + if (ret < 0) + break; + } + if (i < PT3_NUM_FE) { + dev_err(&pdev->dev, "Failed to create FE%d\n", i); + goto err_cleanup_adapters; + } + + ret = pt3_fe_init(pt3); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to init frontends\n"); + i = PT3_NUM_FE - 1; + goto err_cleanup_adapters; + } + + dev_info(&pdev->dev, + "successfully init'ed PT%d (fw:0x%02x, I/F:0x%02x)\n", + ver >> 24, (ver >> 8) & 0xff, (ver >> 16) & 0xff); + return 0; + +err_cleanup_adapters: + while (i >= 0) + pt3_cleanup_adapter(pt3, i--); + i2c_del_adapter(i2c); +err_i2cbuf: + kfree(pt3->i2c_buf); +err_iounmap: + if (pt3->regs[0]) + pci_iounmap(pdev, pt3->regs[0]); + if (pt3->regs[1]) + pci_iounmap(pdev, pt3->regs[1]); +err_kfree: + kfree(pt3); +err_release_regions: + pci_release_regions(pdev); +err_disable_device: + pci_disable_device(pdev); + return ret; + +} + +static const struct pci_device_id pt3_id_table[] = { + { PCI_DEVICE_SUB(0x1172, 0x4c15, 0xee8d, 0x0368) }, + { }, +}; +MODULE_DEVICE_TABLE(pci, pt3_id_table); + +static SIMPLE_DEV_PM_OPS(pt3_pm_ops, pt3_suspend, pt3_resume); + +static struct pci_driver pt3_driver = { + .name = DRV_NAME, + .probe = pt3_probe, + .remove = pt3_remove, + .id_table = pt3_id_table, + + .driver.pm = &pt3_pm_ops, +}; + +module_pci_driver(pt3_driver); + +MODULE_DESCRIPTION("Earthsoft PT3 Driver"); +MODULE_AUTHOR("Akihiro TSUKADA"); +MODULE_LICENSE("GPL"); diff --git a/kernel/drivers/media/pci/pt3/pt3.h b/kernel/drivers/media/pci/pt3/pt3.h new file mode 100644 index 000000000..1b3f2ad25 --- /dev/null +++ b/kernel/drivers/media/pci/pt3/pt3.h @@ -0,0 +1,186 @@ +/* + * Earthsoft PT3 driver + * + * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef PT3_H +#define PT3_H + +#include <linux/atomic.h> +#include <linux/types.h> + +#include "dvb_demux.h" +#include "dvb_frontend.h" +#include "dmxdev.h" + +#include "tc90522.h" +#include "mxl301rf.h" +#include "qm1d1c0042.h" + +#define DRV_NAME KBUILD_MODNAME + +#define PT3_NUM_FE 4 + +/* + * register index of the FPGA chip + */ +#define REG_VERSION 0x00 +#define REG_BUS 0x04 +#define REG_SYSTEM_W 0x08 +#define REG_SYSTEM_R 0x0c +#define REG_I2C_W 0x10 +#define REG_I2C_R 0x14 +#define REG_RAM_W 0x18 +#define REG_RAM_R 0x1c +#define REG_DMA_BASE 0x40 /* regs for FE[i] = REG_DMA_BASE + 0x18 * i */ +#define OFST_DMA_DESC_L 0x00 +#define OFST_DMA_DESC_H 0x04 +#define OFST_DMA_CTL 0x08 +#define OFST_TS_CTL 0x0c +#define OFST_STATUS 0x10 +#define OFST_TS_ERR 0x14 + +/* + * internal buffer for I2C + */ +#define PT3_I2C_MAX 4091 +struct pt3_i2cbuf { + u8 data[PT3_I2C_MAX]; + u8 tmp; + u32 num_cmds; +}; + +/* + * DMA things + */ +#define TS_PACKET_SZ 188 +/* DMA transfers must not cross 4GiB, so use one page / transfer */ +#define DATA_XFER_SZ 4096 +#define DATA_BUF_XFERS 47 +/* (num_bufs * DATA_BUF_SZ) % TS_PACKET_SZ must be 0 */ +#define DATA_BUF_SZ (DATA_BUF_XFERS * DATA_XFER_SZ) +#define MAX_DATA_BUFS 16 +#define MIN_DATA_BUFS 2 + +#define DESCS_IN_PAGE (PAGE_SIZE / sizeof(struct xfer_desc)) +#define MAX_NUM_XFERS (MAX_DATA_BUFS * DATA_BUF_XFERS) +#define MAX_DESC_BUFS DIV_ROUND_UP(MAX_NUM_XFERS, DESCS_IN_PAGE) + +/* DMA transfer description. + * device is passed a pointer to this struct, dma-reads it, + * and gets the DMA buffer ring for storing TS data. + */ +struct xfer_desc { + u32 addr_l; /* bus address of target data buffer */ + u32 addr_h; + u32 size; + u32 next_l; /* bus adddress of the next xfer_desc */ + u32 next_h; +}; + +/* A DMA mapping of a page containing xfer_desc's */ +struct xfer_desc_buffer { + dma_addr_t b_addr; + struct xfer_desc *descs; /* PAGE_SIZE (xfer_desc[DESCS_IN_PAGE]) */ +}; + +/* A DMA mapping of a data buffer */ +struct dma_data_buffer { + dma_addr_t b_addr; + u8 *data; /* size: u8[PAGE_SIZE] */ +}; + +/* + * device things + */ +struct pt3_adap_config { + struct i2c_board_info demod_info; + struct tc90522_config demod_cfg; + + struct i2c_board_info tuner_info; + union tuner_config { + struct qm1d1c0042_config qm1d1c0042; + struct mxl301rf_config mxl301rf; + } tuner_cfg; + u32 init_freq; +}; + +struct pt3_adapter { + struct dvb_adapter dvb_adap; /* dvb_adap.priv => struct pt3_board */ + int adap_idx; + + struct dvb_demux demux; + struct dmxdev dmxdev; + struct dvb_frontend *fe; + struct i2c_client *i2c_demod; + struct i2c_client *i2c_tuner; + + /* data fetch thread */ + struct task_struct *thread; + int num_feeds; + + bool cur_lna; + bool cur_lnb; /* current LNB power status (on/off) */ + + /* items below are for DMA */ + struct dma_data_buffer buffer[MAX_DATA_BUFS]; + int buf_idx; + int buf_ofs; + int num_bufs; /* == pt3_board->num_bufs */ + int num_discard; /* how many access units to discard initially */ + + struct xfer_desc_buffer desc_buf[MAX_DESC_BUFS]; + int num_desc_bufs; /* == num_bufs * DATA_BUF_XFERS / DESCS_IN_PAGE */ +}; + + +struct pt3_board { + struct pci_dev *pdev; + void __iomem *regs[2]; + /* regs[0]: registers, regs[1]: internal memory, used for I2C */ + + struct mutex lock; + + /* LNB power shared among sat-FEs */ + int lnb_on_cnt; /* LNB power on count */ + + /* LNA shared among terr-FEs */ + int lna_on_cnt; /* booster enabled count */ + + int num_bufs; /* number of DMA buffers allocated/mapped per FE */ + + struct i2c_adapter i2c_adap; + struct pt3_i2cbuf *i2c_buf; + + struct pt3_adapter *adaps[PT3_NUM_FE]; +}; + + +/* + * prototypes + */ +extern int pt3_alloc_dmabuf(struct pt3_adapter *adap); +extern void pt3_init_dmabuf(struct pt3_adapter *adap); +extern void pt3_free_dmabuf(struct pt3_adapter *adap); +extern int pt3_start_dma(struct pt3_adapter *adap); +extern int pt3_stop_dma(struct pt3_adapter *adap); +extern int pt3_proc_dma(struct pt3_adapter *adap); + +extern int pt3_i2c_master_xfer(struct i2c_adapter *adap, + struct i2c_msg *msgs, int num); +extern u32 pt3_i2c_functionality(struct i2c_adapter *adap); +extern void pt3_i2c_reset(struct pt3_board *pt3); +extern int pt3_init_all_demods(struct pt3_board *pt3); +extern int pt3_init_all_mxl301rf(struct pt3_board *pt3); +#endif /* PT3_H */ diff --git a/kernel/drivers/media/pci/pt3/pt3_dma.c b/kernel/drivers/media/pci/pt3/pt3_dma.c new file mode 100644 index 000000000..f0ce90437 --- /dev/null +++ b/kernel/drivers/media/pci/pt3/pt3_dma.c @@ -0,0 +1,225 @@ +/* + * Earthsoft PT3 driver + * + * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/pci.h> + +#include "pt3.h" + +#define PT3_ACCESS_UNIT (TS_PACKET_SZ * 128) +#define PT3_BUF_CANARY (0x74) + +static u32 get_dma_base(int idx) +{ + int i; + + i = (idx == 1 || idx == 2) ? 3 - idx : idx; + return REG_DMA_BASE + 0x18 * i; +} + +int pt3_stop_dma(struct pt3_adapter *adap) +{ + struct pt3_board *pt3 = adap->dvb_adap.priv; + u32 base; + u32 stat; + int retry; + + base = get_dma_base(adap->adap_idx); + stat = ioread32(pt3->regs[0] + base + OFST_STATUS); + if (!(stat & 0x01)) + return 0; + + iowrite32(0x02, pt3->regs[0] + base + OFST_DMA_CTL); + for (retry = 0; retry < 5; retry++) { + stat = ioread32(pt3->regs[0] + base + OFST_STATUS); + if (!(stat & 0x01)) + return 0; + msleep(50); + } + return -EIO; +} + +int pt3_start_dma(struct pt3_adapter *adap) +{ + struct pt3_board *pt3 = adap->dvb_adap.priv; + u32 base = get_dma_base(adap->adap_idx); + + iowrite32(0x02, pt3->regs[0] + base + OFST_DMA_CTL); + iowrite32(lower_32_bits(adap->desc_buf[0].b_addr), + pt3->regs[0] + base + OFST_DMA_DESC_L); + iowrite32(upper_32_bits(adap->desc_buf[0].b_addr), + pt3->regs[0] + base + OFST_DMA_DESC_H); + iowrite32(0x01, pt3->regs[0] + base + OFST_DMA_CTL); + return 0; +} + + +static u8 *next_unit(struct pt3_adapter *adap, int *idx, int *ofs) +{ + *ofs += PT3_ACCESS_UNIT; + if (*ofs >= DATA_BUF_SZ) { + *ofs -= DATA_BUF_SZ; + (*idx)++; + if (*idx == adap->num_bufs) + *idx = 0; + } + return &adap->buffer[*idx].data[*ofs]; +} + +int pt3_proc_dma(struct pt3_adapter *adap) +{ + int idx, ofs; + + idx = adap->buf_idx; + ofs = adap->buf_ofs; + + if (adap->buffer[idx].data[ofs] == PT3_BUF_CANARY) + return 0; + + while (*next_unit(adap, &idx, &ofs) != PT3_BUF_CANARY) { + u8 *p; + + p = &adap->buffer[adap->buf_idx].data[adap->buf_ofs]; + if (adap->num_discard > 0) + adap->num_discard--; + else if (adap->buf_ofs + PT3_ACCESS_UNIT > DATA_BUF_SZ) { + dvb_dmx_swfilter_packets(&adap->demux, p, + (DATA_BUF_SZ - adap->buf_ofs) / TS_PACKET_SZ); + dvb_dmx_swfilter_packets(&adap->demux, + adap->buffer[idx].data, ofs / TS_PACKET_SZ); + } else + dvb_dmx_swfilter_packets(&adap->demux, p, + PT3_ACCESS_UNIT / TS_PACKET_SZ); + + *p = PT3_BUF_CANARY; + adap->buf_idx = idx; + adap->buf_ofs = ofs; + } + return 0; +} + +void pt3_init_dmabuf(struct pt3_adapter *adap) +{ + int idx, ofs; + u8 *p; + + idx = 0; + ofs = 0; + p = adap->buffer[0].data; + /* mark the whole buffers as "not written yet" */ + while (idx < adap->num_bufs) { + p[ofs] = PT3_BUF_CANARY; + ofs += PT3_ACCESS_UNIT; + if (ofs >= DATA_BUF_SZ) { + ofs -= DATA_BUF_SZ; + idx++; + p = adap->buffer[idx].data; + } + } + adap->buf_idx = 0; + adap->buf_ofs = 0; +} + +void pt3_free_dmabuf(struct pt3_adapter *adap) +{ + struct pt3_board *pt3; + int i; + + pt3 = adap->dvb_adap.priv; + for (i = 0; i < adap->num_bufs; i++) + dma_free_coherent(&pt3->pdev->dev, DATA_BUF_SZ, + adap->buffer[i].data, adap->buffer[i].b_addr); + adap->num_bufs = 0; + + for (i = 0; i < adap->num_desc_bufs; i++) + dma_free_coherent(&pt3->pdev->dev, PAGE_SIZE, + adap->desc_buf[i].descs, adap->desc_buf[i].b_addr); + adap->num_desc_bufs = 0; +} + + +int pt3_alloc_dmabuf(struct pt3_adapter *adap) +{ + struct pt3_board *pt3; + void *p; + int i, j; + int idx, ofs; + int num_desc_bufs; + dma_addr_t data_addr, desc_addr; + struct xfer_desc *d; + + pt3 = adap->dvb_adap.priv; + adap->num_bufs = 0; + adap->num_desc_bufs = 0; + for (i = 0; i < pt3->num_bufs; i++) { + p = dma_alloc_coherent(&pt3->pdev->dev, DATA_BUF_SZ, + &adap->buffer[i].b_addr, GFP_KERNEL); + if (p == NULL) + goto failed; + adap->buffer[i].data = p; + adap->num_bufs++; + } + pt3_init_dmabuf(adap); + + /* build circular-linked pointers (xfer_desc) to the data buffers*/ + idx = 0; + ofs = 0; + num_desc_bufs = + DIV_ROUND_UP(adap->num_bufs * DATA_BUF_XFERS, DESCS_IN_PAGE); + for (i = 0; i < num_desc_bufs; i++) { + p = dma_alloc_coherent(&pt3->pdev->dev, PAGE_SIZE, + &desc_addr, GFP_KERNEL); + if (p == NULL) + goto failed; + adap->num_desc_bufs++; + adap->desc_buf[i].descs = p; + adap->desc_buf[i].b_addr = desc_addr; + + if (i > 0) { + d = &adap->desc_buf[i - 1].descs[DESCS_IN_PAGE - 1]; + d->next_l = lower_32_bits(desc_addr); + d->next_h = upper_32_bits(desc_addr); + } + for (j = 0; j < DESCS_IN_PAGE; j++) { + data_addr = adap->buffer[idx].b_addr + ofs; + d = &adap->desc_buf[i].descs[j]; + d->addr_l = lower_32_bits(data_addr); + d->addr_h = upper_32_bits(data_addr); + d->size = DATA_XFER_SZ; + + desc_addr += sizeof(struct xfer_desc); + d->next_l = lower_32_bits(desc_addr); + d->next_h = upper_32_bits(desc_addr); + + ofs += DATA_XFER_SZ; + if (ofs >= DATA_BUF_SZ) { + ofs -= DATA_BUF_SZ; + idx++; + if (idx >= adap->num_bufs) { + desc_addr = adap->desc_buf[0].b_addr; + d->next_l = lower_32_bits(desc_addr); + d->next_h = upper_32_bits(desc_addr); + return 0; + } + } + } + } + return 0; + +failed: + pt3_free_dmabuf(adap); + return -ENOMEM; +} diff --git a/kernel/drivers/media/pci/pt3/pt3_i2c.c b/kernel/drivers/media/pci/pt3/pt3_i2c.c new file mode 100644 index 000000000..ec6a8a2e4 --- /dev/null +++ b/kernel/drivers/media/pci/pt3/pt3_i2c.c @@ -0,0 +1,240 @@ +/* + * Earthsoft PT3 driver + * + * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/io.h> +#include <linux/pci.h> + +#include "pt3.h" + +#define PT3_I2C_BASE 2048 +#define PT3_CMD_ADDR_NORMAL 0 +#define PT3_CMD_ADDR_INIT_DEMOD 4096 +#define PT3_CMD_ADDR_INIT_TUNER (4096 + 2042) + +/* masks for I2C status register */ +#define STAT_SEQ_RUNNING 0x1 +#define STAT_SEQ_ERROR 0x6 +#define STAT_NO_SEQ 0x8 + +#define PT3_I2C_RUN (1 << 16) +#define PT3_I2C_RESET (1 << 17) + +enum ctl_cmd { + I_END, + I_ADDRESS, + I_CLOCK_L, + I_CLOCK_H, + I_DATA_L, + I_DATA_H, + I_RESET, + I_SLEEP, + I_DATA_L_NOP = 0x08, + I_DATA_H_NOP = 0x0c, + I_DATA_H_READ = 0x0d, + I_DATA_H_ACK0 = 0x0e, + I_DATA_H_ACK1 = 0x0f, +}; + + +static void cmdbuf_add(struct pt3_i2cbuf *cbuf, enum ctl_cmd cmd) +{ + int buf_idx; + + if ((cbuf->num_cmds % 2) == 0) + cbuf->tmp = cmd; + else { + cbuf->tmp |= cmd << 4; + buf_idx = cbuf->num_cmds / 2; + if (buf_idx < ARRAY_SIZE(cbuf->data)) + cbuf->data[buf_idx] = cbuf->tmp; + } + cbuf->num_cmds++; +} + +static void put_end(struct pt3_i2cbuf *cbuf) +{ + cmdbuf_add(cbuf, I_END); + if (cbuf->num_cmds % 2) + cmdbuf_add(cbuf, I_END); +} + +static void put_start(struct pt3_i2cbuf *cbuf) +{ + cmdbuf_add(cbuf, I_DATA_H); + cmdbuf_add(cbuf, I_CLOCK_H); + cmdbuf_add(cbuf, I_DATA_L); + cmdbuf_add(cbuf, I_CLOCK_L); +} + +static void put_byte_write(struct pt3_i2cbuf *cbuf, u8 val) +{ + u8 mask; + + mask = 0x80; + for (mask = 0x80; mask > 0; mask >>= 1) + cmdbuf_add(cbuf, (val & mask) ? I_DATA_H_NOP : I_DATA_L_NOP); + cmdbuf_add(cbuf, I_DATA_H_ACK0); +} + +static void put_byte_read(struct pt3_i2cbuf *cbuf, u32 size) +{ + int i, j; + + for (i = 0; i < size; i++) { + for (j = 0; j < 8; j++) + cmdbuf_add(cbuf, I_DATA_H_READ); + cmdbuf_add(cbuf, (i == size - 1) ? I_DATA_H_NOP : I_DATA_L_NOP); + } +} + +static void put_stop(struct pt3_i2cbuf *cbuf) +{ + cmdbuf_add(cbuf, I_DATA_L); + cmdbuf_add(cbuf, I_CLOCK_H); + cmdbuf_add(cbuf, I_DATA_H); +} + + +/* translates msgs to internal commands for bit-banging */ +static void translate(struct pt3_i2cbuf *cbuf, struct i2c_msg *msgs, int num) +{ + int i, j; + bool rd; + + cbuf->num_cmds = 0; + for (i = 0; i < num; i++) { + rd = !!(msgs[i].flags & I2C_M_RD); + put_start(cbuf); + put_byte_write(cbuf, msgs[i].addr << 1 | rd); + if (rd) + put_byte_read(cbuf, msgs[i].len); + else + for (j = 0; j < msgs[i].len; j++) + put_byte_write(cbuf, msgs[i].buf[j]); + } + if (num > 0) { + put_stop(cbuf); + put_end(cbuf); + } +} + +static int wait_i2c_result(struct pt3_board *pt3, u32 *result, int max_wait) +{ + int i; + u32 v; + + for (i = 0; i < max_wait; i++) { + v = ioread32(pt3->regs[0] + REG_I2C_R); + if (!(v & STAT_SEQ_RUNNING)) + break; + usleep_range(500, 750); + } + if (i >= max_wait) + return -EIO; + if (result) + *result = v; + return 0; +} + +/* send [pre-]translated i2c msgs stored at addr */ +static int send_i2c_cmd(struct pt3_board *pt3, u32 addr) +{ + u32 ret; + + /* make sure that previous transactions had finished */ + if (wait_i2c_result(pt3, NULL, 50)) { + dev_warn(&pt3->pdev->dev, "(%s) prev. transaction stalled\n", + __func__); + return -EIO; + } + + iowrite32(PT3_I2C_RUN | addr, pt3->regs[0] + REG_I2C_W); + usleep_range(200, 300); + /* wait for the current transaction to finish */ + if (wait_i2c_result(pt3, &ret, 500) || (ret & STAT_SEQ_ERROR)) { + dev_warn(&pt3->pdev->dev, "(%s) failed.\n", __func__); + return -EIO; + } + return 0; +} + + +/* init commands for each demod are combined into one transaction + * and hidden in ROM with the address PT3_CMD_ADDR_INIT_DEMOD. + */ +int pt3_init_all_demods(struct pt3_board *pt3) +{ + ioread32(pt3->regs[0] + REG_I2C_R); + return send_i2c_cmd(pt3, PT3_CMD_ADDR_INIT_DEMOD); +} + +/* init commands for two ISDB-T tuners are hidden in ROM. */ +int pt3_init_all_mxl301rf(struct pt3_board *pt3) +{ + usleep_range(1000, 2000); + return send_i2c_cmd(pt3, PT3_CMD_ADDR_INIT_TUNER); +} + +void pt3_i2c_reset(struct pt3_board *pt3) +{ + iowrite32(PT3_I2C_RESET, pt3->regs[0] + REG_I2C_W); +} + +/* + * I2C algorithm + */ +int +pt3_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) +{ + struct pt3_board *pt3; + struct pt3_i2cbuf *cbuf; + int i; + void __iomem *p; + + pt3 = i2c_get_adapdata(adap); + cbuf = pt3->i2c_buf; + + for (i = 0; i < num; i++) + if (msgs[i].flags & I2C_M_RECV_LEN) { + dev_warn(&pt3->pdev->dev, + "(%s) I2C_M_RECV_LEN not supported.\n", + __func__); + return -EINVAL; + } + + translate(cbuf, msgs, num); + memcpy_toio(pt3->regs[1] + PT3_I2C_BASE + PT3_CMD_ADDR_NORMAL / 2, + cbuf->data, cbuf->num_cmds); + + if (send_i2c_cmd(pt3, PT3_CMD_ADDR_NORMAL) < 0) + return -EIO; + + p = pt3->regs[1] + PT3_I2C_BASE; + for (i = 0; i < num; i++) + if ((msgs[i].flags & I2C_M_RD) && msgs[i].len > 0) { + memcpy_fromio(msgs[i].buf, p, msgs[i].len); + p += msgs[i].len; + } + + return num; +} + +u32 pt3_i2c_functionality(struct i2c_adapter *adap) +{ + return I2C_FUNC_I2C; +} |