1 files changed, 631 insertions, 0 deletions

diff --git a/drivers/media/video/cx88/cx88-input.c b/drivers/media/video/cx88/cx88-input.c
new file mode 100644
index 00000000000..e614201b5ed
--- /dev/null
+++ b/drivers/media/video/cx88/cx88-input.c
@@ -0,0 +1,631 @@
+/*
+ *
+ * Device driver for GPIO attached remote control interfaces
+ * on Conexant 2388x based TV/DVB cards.
+ *
+ * Copyright (c) 2003 Pavel Machek
+ * Copyright (c) 2004 Gerd Knorr
+ * Copyright (c) 2004, 2005 Chris Pascoe
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/hrtimer.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include "cx88.h"
+#include <media/rc-core.h>
+
+#define MODULE_NAME "cx88xx"
+
+/* ---------------------------------------------------------------------- */
+
+struct cx88_IR {
+        struct cx88_core *core;
+        struct rc_dev *dev;
+
+        int users;
+
+        char name[32];
+        char phys[32];
+
+        /* sample from gpio pin 16 */
+        u32 sampling;
+
+        /* poll external decoder */
+        int polling;
+        struct hrtimer timer;
+        u32 gpio_addr;
+        u32 last_gpio;
+        u32 mask_keycode;
+        u32 mask_keydown;
+        u32 mask_keyup;
+};
+
+static unsigned ir_samplerate = 4;
+module_param(ir_samplerate, uint, 0444);
+MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4");
+
+static int ir_debug;
+module_param(ir_debug, int, 0644);      /* debug level [IR] */
+MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
+
+#define ir_dprintk(fmt, arg...) if (ir_debug) \
+        printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
+
+#define dprintk(fmt, arg...)    if (ir_debug) \
+        printk(KERN_DEBUG "cx88 IR: " fmt , ##arg)
+
+/* ---------------------------------------------------------------------- */
+
+static void cx88_ir_handle_key(struct cx88_IR *ir)
+{
+        struct cx88_core *core = ir->core;
+        u32 gpio, data, auxgpio;
+
+        /* read gpio value */
+        gpio = cx_read(ir->gpio_addr);
+        switch (core->boardnr) {
+        case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
+                /* This board apparently uses a combination of 2 GPIO
+                   to represent the keys. Additionally, the second GPIO
+                   can be used for parity.
+
+                   Example:
+
+                   for key "5"
+                        gpio = 0x758, auxgpio = 0xe5 or 0xf5
+                   for key "Power"
+                        gpio = 0x758, auxgpio = 0xed or 0xfd
+                 */
+
+                auxgpio = cx_read(MO_GP1_IO);
+                /* Take out the parity part */
+                gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
+                break;
+        case CX88_BOARD_WINFAST_DTV1000:
+        case CX88_BOARD_WINFAST_DTV1800H:
+        case CX88_BOARD_WINFAST_DTV1800H_XC4000:
+        case CX88_BOARD_WINFAST_DTV2000H_PLUS:
+        case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
+                gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
+                auxgpio = gpio;
+                break;
+        default:
+                auxgpio = gpio;
+        }
+        if (ir->polling) {
+                if (ir->last_gpio == auxgpio)
+                        return;
+                ir->last_gpio = auxgpio;
+        }
+
+        /* extract data */
+        data = ir_extract_bits(gpio, ir->mask_keycode);
+        ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
+                   gpio, data,
+                   ir->polling ? "poll" : "irq",
+                   (gpio & ir->mask_keydown) ? " down" : "",
+                   (gpio & ir->mask_keyup) ? " up" : "");
+
+        if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
+                u32 gpio_key = cx_read(MO_GP0_IO);
+
+                data = (data << 4) | ((gpio_key & 0xf0) >> 4);
+
+                rc_keydown(ir->dev, data, 0);
+
+        } else if (ir->mask_keydown) {
+                /* bit set on keydown */
+                if (gpio & ir->mask_keydown)
+                        rc_keydown_notimeout(ir->dev, data, 0);
+                else
+                        rc_keyup(ir->dev);
+
+        } else if (ir->mask_keyup) {
+                /* bit cleared on keydown */
+                if (0 == (gpio & ir->mask_keyup))
+                        rc_keydown_notimeout(ir->dev, data, 0);
+                else
+                        rc_keyup(ir->dev);
+
+        } else {
+                /* can't distinguish keydown/up :-/ */
+                rc_keydown_notimeout(ir->dev, data, 0);
+                rc_keyup(ir->dev);
+        }
+}
+
+static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
+{
+        unsigned long missed;
+        struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
+
+        cx88_ir_handle_key(ir);
+        missed = hrtimer_forward_now(&ir->timer,
+                                     ktime_set(0, ir->polling * 1000000));
+        if (missed > 1)
+                ir_dprintk("Missed ticks %ld\n", missed - 1);
+
+        return HRTIMER_RESTART;
+}
+
+static int __cx88_ir_start(void *priv)
+{
+        struct cx88_core *core = priv;
+        struct cx88_IR *ir;
+
+        if (!core || !core->ir)
+                return -EINVAL;
+
+        ir = core->ir;
+
+        if (ir->polling) {
+                hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+                ir->timer.function = cx88_ir_work;
+                hrtimer_start(&ir->timer,
+                              ktime_set(0, ir->polling * 1000000),
+                              HRTIMER_MODE_REL);
+        }
+        if (ir->sampling) {
+                core->pci_irqmask |= PCI_INT_IR_SMPINT;
+                cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
+                cx_write(MO_DDSCFG_IO, 0x5); /* enable */
+        }
+        return 0;
+}
+
+static void __cx88_ir_stop(void *priv)
+{
+        struct cx88_core *core = priv;
+        struct cx88_IR *ir;
+
+        if (!core || !core->ir)
+                return;
+
+        ir = core->ir;
+        if (ir->sampling) {
+                cx_write(MO_DDSCFG_IO, 0x0);
+                core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
+        }
+
+        if (ir->polling)
+                hrtimer_cancel(&ir->timer);
+}
+
+int cx88_ir_start(struct cx88_core *core)
+{
+        if (core->ir->users)
+                return __cx88_ir_start(core);
+
+        return 0;
+}
+
+void cx88_ir_stop(struct cx88_core *core)
+{
+        if (core->ir->users)
+                __cx88_ir_stop(core);
+}
+
+static int cx88_ir_open(struct rc_dev *rc)
+{
+        struct cx88_core *core = rc->priv;
+
+        core->ir->users++;
+        return __cx88_ir_start(core);
+}
+
+static void cx88_ir_close(struct rc_dev *rc)
+{
+        struct cx88_core *core = rc->priv;
+
+        core->ir->users--;
+        if (!core->ir->users)
+                __cx88_ir_stop(core);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
+{
+        struct cx88_IR *ir;
+        struct rc_dev *dev;
+        char *ir_codes = NULL;
+        u64 rc_type = RC_TYPE_OTHER;
+        int err = -ENOMEM;
+        u32 hardware_mask = 0;  /* For devices with a hardware mask, when
+                                 * used with a full-code IR table
+                                 */
+
+        ir = kzalloc(sizeof(*ir), GFP_KERNEL);
+        dev = rc_allocate_device();
+        if (!ir || !dev)
+                goto err_out_free;
+
+        ir->dev = dev;
+
+        /* detect & configure */
+        switch (core->boardnr) {
+        case CX88_BOARD_DNTV_LIVE_DVB_T:
+        case CX88_BOARD_KWORLD_DVB_T:
+        case CX88_BOARD_KWORLD_DVB_T_CX22702:
+                ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
+                ir->gpio_addr = MO_GP1_IO;
+                ir->mask_keycode = 0x1f;
+                ir->mask_keyup = 0x60;
+                ir->polling = 50; /* ms */
+                break;
+        case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
+                ir_codes = RC_MAP_CINERGY_1400;
+                ir->sampling = 0xeb04; /* address */
+                break;
+        case CX88_BOARD_HAUPPAUGE:
+        case CX88_BOARD_HAUPPAUGE_DVB_T1:
+        case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
+        case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
+        case CX88_BOARD_HAUPPAUGE_HVR1100:
+        case CX88_BOARD_HAUPPAUGE_HVR3000:
+        case CX88_BOARD_HAUPPAUGE_HVR4000:
+        case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
+        case CX88_BOARD_PCHDTV_HD3000:
+        case CX88_BOARD_PCHDTV_HD5500:
+        case CX88_BOARD_HAUPPAUGE_IRONLY:
+                ir_codes = RC_MAP_HAUPPAUGE;
+                ir->sampling = 1;
+                break;
+        case CX88_BOARD_WINFAST_DTV2000H:
+        case CX88_BOARD_WINFAST_DTV2000H_J:
+        case CX88_BOARD_WINFAST_DTV1800H:
+        case CX88_BOARD_WINFAST_DTV1800H_XC4000:
+        case CX88_BOARD_WINFAST_DTV2000H_PLUS:
+                ir_codes = RC_MAP_WINFAST;
+                ir->gpio_addr = MO_GP0_IO;
+                ir->mask_keycode = 0x8f8;
+                ir->mask_keyup = 0x100;
+                ir->polling = 50; /* ms */
+                break;
+        case CX88_BOARD_WINFAST2000XP_EXPERT:
+        case CX88_BOARD_WINFAST_DTV1000:
+        case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
+                ir_codes = RC_MAP_WINFAST;
+                ir->gpio_addr = MO_GP0_IO;
+                ir->mask_keycode = 0x8f8;
+                ir->mask_keyup = 0x100;
+                ir->polling = 1; /* ms */
+                break;
+        case CX88_BOARD_IODATA_GVBCTV7E:
+                ir_codes = RC_MAP_IODATA_BCTV7E;
+                ir->gpio_addr = MO_GP0_IO;
+                ir->mask_keycode = 0xfd;
+                ir->mask_keydown = 0x02;
+                ir->polling = 5; /* ms */
+                break;
+        case CX88_BOARD_PROLINK_PLAYTVPVR:
+        case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
+                /*
+                 * It seems that this hardware is paired with NEC extended
+                 * address 0x866b. So, unfortunately, its usage with other
+                 * IR's with different address won't work. Still, there are
+                 * other IR's from the same manufacturer that works, like the
+                 * 002-T mini RC, provided with newer PV hardware
+                 */
+                ir_codes = RC_MAP_PIXELVIEW_MK12;
+                ir->gpio_addr = MO_GP1_IO;
+                ir->mask_keyup = 0x80;
+                ir->polling = 10; /* ms */
+                hardware_mask = 0x3f;   /* Hardware returns only 6 bits from command part */
+                break;
+        case CX88_BOARD_PROLINK_PV_8000GT:
+        case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
+                ir_codes = RC_MAP_PIXELVIEW_NEW;
+                ir->gpio_addr = MO_GP1_IO;
+                ir->mask_keycode = 0x3f;
+                ir->mask_keyup = 0x80;
+                ir->polling = 1; /* ms */
+                break;
+        case CX88_BOARD_KWORLD_LTV883:
+                ir_codes = RC_MAP_PIXELVIEW;
+                ir->gpio_addr = MO_GP1_IO;
+                ir->mask_keycode = 0x1f;
+                ir->mask_keyup = 0x60;
+                ir->polling = 1; /* ms */
+                break;
+        case CX88_BOARD_ADSTECH_DVB_T_PCI:
+                ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
+                ir->gpio_addr = MO_GP1_IO;
+                ir->mask_keycode = 0xbf;
+                ir->mask_keyup = 0x40;
+                ir->polling = 50; /* ms */
+                break;
+        case CX88_BOARD_MSI_TVANYWHERE_MASTER:
+                ir_codes = RC_MAP_MSI_TVANYWHERE;
+                ir->gpio_addr = MO_GP1_IO;
+                ir->mask_keycode = 0x1f;
+                ir->mask_keyup = 0x40;
+                ir->polling = 1; /* ms */
+                break;
+        case CX88_BOARD_AVERTV_303:
+        case CX88_BOARD_AVERTV_STUDIO_303:
+                ir_codes         = RC_MAP_AVERTV_303;
+                ir->gpio_addr    = MO_GP2_IO;
+                ir->mask_keycode = 0xfb;
+                ir->mask_keydown = 0x02;
+                ir->polling      = 50; /* ms */
+                break;
+        case CX88_BOARD_OMICOM_SS4_PCI:
+        case CX88_BOARD_SATTRADE_ST4200:
+        case CX88_BOARD_TBS_8920:
+        case CX88_BOARD_TBS_8910:
+        case CX88_BOARD_PROF_7300:
+        case CX88_BOARD_PROF_7301:
+        case CX88_BOARD_PROF_6200:
+                ir_codes = RC_MAP_TBS_NEC;
+                ir->sampling = 0xff00; /* address */
+                break;
+        case CX88_BOARD_TEVII_S464:
+        case CX88_BOARD_TEVII_S460:
+        case CX88_BOARD_TEVII_S420:
+                ir_codes = RC_MAP_TEVII_NEC;
+                ir->sampling = 0xff00; /* address */
+                break;
+        case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
+                ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
+                ir->sampling     = 0xff00; /* address */
+                break;
+        case CX88_BOARD_NORWOOD_MICRO:
+                ir_codes         = RC_MAP_NORWOOD;
+                ir->gpio_addr    = MO_GP1_IO;
+                ir->mask_keycode = 0x0e;
+                ir->mask_keyup   = 0x80;
+                ir->polling      = 50; /* ms */
+                break;
+        case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
+                ir_codes         = RC_MAP_NPGTECH;
+                ir->gpio_addr    = MO_GP0_IO;
+                ir->mask_keycode = 0xfa;
+                ir->polling      = 50; /* ms */
+                break;
+        case CX88_BOARD_PINNACLE_PCTV_HD_800i:
+                ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
+                ir->sampling     = 1;
+                break;
+        case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
+                ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
+                ir->gpio_addr    = MO_GP2_IO;
+                ir->mask_keycode = 0x7e;
+                ir->polling      = 100; /* ms */
+                break;
+        case CX88_BOARD_TWINHAN_VP1027_DVBS:
+                ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
+                rc_type          = RC_TYPE_NEC;
+                ir->sampling     = 0xff00; /* address */
+                break;
+        }
+
+        if (!ir_codes) {
+                err = -ENODEV;
+                goto err_out_free;
+        }
+
+        /*
+         * The usage of mask_keycode were very convenient, due to several
+         * reasons. Among others, the scancode tables were using the scancode
+         * as the index elements. So, the less bits it was used, the smaller
+         * the table were stored. After the input changes, the better is to use
+         * the full scancodes, since it allows replacing the IR remote by
+         * another one. Unfortunately, there are still some hardware, like
+         * Pixelview Ultra Pro, where only part of the scancode is sent via
+         * GPIO. So, there's no way to get the full scancode. Due to that,
+         * hardware_mask were introduced here: it represents those hardware
+         * that has such limits.
+         */
+        if (hardware_mask && !ir->mask_keycode)
+                ir->mask_keycode = hardware_mask;
+
+        /* init input device */
+        snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
+        snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
+
+        dev->input_name = ir->name;
+        dev->input_phys = ir->phys;
+        dev->input_id.bustype = BUS_PCI;
+        dev->input_id.version = 1;
+        if (pci->subsystem_vendor) {
+                dev->input_id.vendor = pci->subsystem_vendor;
+                dev->input_id.product = pci->subsystem_device;
+        } else {
+                dev->input_id.vendor = pci->vendor;
+                dev->input_id.product = pci->device;
+        }
+        dev->dev.parent = &pci->dev;
+        dev->map_name = ir_codes;
+        dev->driver_name = MODULE_NAME;
+        dev->priv = core;
+        dev->open = cx88_ir_open;
+        dev->close = cx88_ir_close;
+        dev->scanmask = hardware_mask;
+
+        if (ir->sampling) {
+                dev->driver_type = RC_DRIVER_IR_RAW;
+                dev->timeout = 10 * 1000 * 1000; /* 10 ms */
+        } else {
+                dev->driver_type = RC_DRIVER_SCANCODE;
+                dev->allowed_protos = rc_type;
+        }
+
+        ir->core = core;
+        core->ir = ir;
+
+        /* all done */
+        err = rc_register_device(dev);
+        if (err)
+                goto err_out_free;
+
+        return 0;
+
+err_out_free:
+        rc_free_device(dev);
+        core->ir = NULL;
+        kfree(ir);
+        return err;
+}
+
+int cx88_ir_fini(struct cx88_core *core)
+{
+        struct cx88_IR *ir = core->ir;
+
+        /* skip detach on non attached boards */
+        if (NULL == ir)
+                return 0;
+
+        cx88_ir_stop(core);
+        rc_unregister_device(ir->dev);
+        kfree(ir);
+
+        /* done */
+        core->ir = NULL;
+        return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void cx88_ir_irq(struct cx88_core *core)
+{
+        struct cx88_IR *ir = core->ir;
+        u32 samples;
+        unsigned todo, bits;
+        struct ir_raw_event ev;
+
+        if (!ir || !ir->sampling)
+                return;
+
+        /*
+         * Samples are stored in a 32 bit register, oldest sample in
+         * the msb. A set bit represents space and an unset bit
+         * represents a pulse.
+         */
+        samples = cx_read(MO_SAMPLE_IO);
+
+        if (samples == 0xff && ir->dev->idle)
+                return;
+
+        init_ir_raw_event(&ev);
+        for (todo = 32; todo > 0; todo -= bits) {
+                ev.pulse = samples & 0x80000000 ? false : true;
+                bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
+                ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
+                ir_raw_event_store_with_filter(ir->dev, &ev);
+                samples <<= bits;
+        }
+        ir_raw_event_handle(ir->dev);
+}
+
+static int get_key_pvr2000(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+        int flags, code;
+
+        /* poll IR chip */
+        flags = i2c_smbus_read_byte_data(ir->c, 0x10);
+        if (flags < 0) {
+                dprintk("read error\n");
+                return 0;
+        }
+        /* key pressed ? */
+        if (0 == (flags & 0x80))
+                return 0;
+
+        /* read actual key code */
+        code = i2c_smbus_read_byte_data(ir->c, 0x00);
+        if (code < 0) {
+                dprintk("read error\n");
+                return 0;
+        }
+
+        dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
+                   code & 0xff, flags & 0xff);
+
+        *ir_key = code & 0xff;
+        *ir_raw = code;
+        return 1;
+}
+
+void cx88_i2c_init_ir(struct cx88_core *core)
+{
+        struct i2c_board_info info;
+        const unsigned short default_addr_list[] = {
+                0x18, 0x6b, 0x71,
+                I2C_CLIENT_END
+        };
+        const unsigned short pvr2000_addr_list[] = {
+                0x18, 0x1a,
+                I2C_CLIENT_END
+        };
+        const unsigned short *addr_list = default_addr_list;
+        const unsigned short *addrp;
+        /* Instantiate the IR receiver device, if present */
+        if (0 != core->i2c_rc)
+                return;
+
+        memset(&info, 0, sizeof(struct i2c_board_info));
+        strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
+
+        switch (core->boardnr) {
+        case CX88_BOARD_LEADTEK_PVR2000:
+                addr_list = pvr2000_addr_list;
+                core->init_data.name = "cx88 Leadtek PVR 2000 remote";
+                core->init_data.type = RC_TYPE_UNKNOWN;
+                core->init_data.get_key = get_key_pvr2000;
+                core->init_data.ir_codes = RC_MAP_EMPTY;
+                break;
+        }
+
+        /*
+         * We can't call i2c_new_probed_device() because it uses
+         * quick writes for probing and at least some RC receiver
+         * devices only reply to reads.
+         * Also, Hauppauge XVR needs to be specified, as address 0x71
+         * conflicts with another remote type used with saa7134
+         */
+        for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
+                info.platform_data = NULL;
+                memset(&core->init_data, 0, sizeof(core->init_data));
+
+                if (*addrp == 0x71) {
+                        /* Hauppauge XVR */
+                        core->init_data.name = "cx88 Hauppauge XVR remote";
+                        core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
+                        core->init_data.type = RC_TYPE_RC5;
+                        core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
+
+                        info.platform_data = &core->init_data;
+                }
+                if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
+                                        I2C_SMBUS_READ, 0,
+                                        I2C_SMBUS_QUICK, NULL) >= 0) {
+                        info.addr = *addrp;
+                        i2c_new_device(&core->i2c_adap, &info);
+                        break;
+                }
+        }
+}
+
+/* ---------------------------------------------------------------------- */
+
+MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
+MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
+MODULE_LICENSE("GPL");