]> asedeno.scripts.mit.edu Git - linux.git/blobdiff - drivers/media/pci/pt1/pt1.c
treewide: Use array_size() in vmalloc()
[linux.git] / drivers / media / pci / pt1 / pt1.c
index 4f6867af831187f6640239dd0335dae44c6be3c4..fda969a85684028e78a889c1d49feeb28aac430c 100644 (file)
  */
 
 #include <linux/kernel.h>
+#include <linux/sched.h>
 #include <linux/sched/signal.h>
+#include <linux/hrtimer.h>
+#include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
@@ -26,6 +29,8 @@
 #include <linux/kthread.h>
 #include <linux/freezer.h>
 #include <linux/ratelimit.h>
+#include <linux/string.h>
+#include <linux/i2c.h>
 
 #include <media/dvbdev.h>
 #include <media/dvb_demux.h>
@@ -33,8 +38,9 @@
 #include <media/dvb_net.h>
 #include <media/dvb_frontend.h>
 
-#include "va1j5jf8007t.h"
-#include "va1j5jf8007s.h"
+#include "tc90522.h"
+#include "qm1d1b0004.h"
+#include "dvb-pll.h"
 
 #define DRIVER_NAME "earth-pt1"
 
@@ -63,6 +69,11 @@ struct pt1_table {
        struct pt1_buffer bufs[PT1_NR_BUFS];
 };
 
+enum pt1_fe_clk {
+       PT1_FE_CLK_20MHZ,       /* PT1 */
+       PT1_FE_CLK_25MHZ,       /* PT2 */
+};
+
 #define PT1_NR_ADAPS 4
 
 struct pt1_adapter;
@@ -81,6 +92,8 @@ struct pt1 {
        struct mutex lock;
        int power;
        int reset;
+
+       enum pt1_fe_clk fe_clk;
 };
 
 struct pt1_adapter {
@@ -97,6 +110,8 @@ struct pt1_adapter {
        int users;
        struct dmxdev dmxdev;
        struct dvb_frontend *fe;
+       struct i2c_client *demod_i2c_client;
+       struct i2c_client *tuner_i2c_client;
        int (*orig_set_voltage)(struct dvb_frontend *fe,
                                enum fe_sec_voltage voltage);
        int (*orig_sleep)(struct dvb_frontend *fe);
@@ -106,6 +121,145 @@ struct pt1_adapter {
        int sleep;
 };
 
+union pt1_tuner_config {
+       struct qm1d1b0004_config qm1d1b0004;
+       struct dvb_pll_config tda6651;
+};
+
+struct pt1_config {
+       struct i2c_board_info demod_info;
+       struct tc90522_config demod_cfg;
+
+       struct i2c_board_info tuner_info;
+       union pt1_tuner_config tuner_cfg;
+};
+
+static const struct pt1_config pt1_configs[PT1_NR_ADAPS] = {
+       {
+               .demod_info = {
+                       I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x1b),
+               },
+               .tuner_info = {
+                       I2C_BOARD_INFO("qm1d1b0004", 0x60),
+               },
+       },
+       {
+               .demod_info = {
+                       I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x1a),
+               },
+               .tuner_info = {
+                       I2C_BOARD_INFO("tda665x_earthpt1", 0x61),
+               },
+       },
+       {
+               .demod_info = {
+                       I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x19),
+               },
+               .tuner_info = {
+                       I2C_BOARD_INFO("qm1d1b0004", 0x60),
+               },
+       },
+       {
+               .demod_info = {
+                       I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x18),
+               },
+               .tuner_info = {
+                       I2C_BOARD_INFO("tda665x_earthpt1", 0x61),
+               },
+       },
+};
+
+static const u8 va1j5jf8007s_20mhz_configs[][2] = {
+       {0x04, 0x02}, {0x0d, 0x55}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01},
+       {0x1c, 0x0a}, {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0},
+       {0x52, 0x89}, {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69},
+       {0x87, 0x04}, {0x8e, 0x02}, {0xa3, 0xf7}, {0xa5, 0xc0},
+};
+
+static const u8 va1j5jf8007s_25mhz_configs[][2] = {
+       {0x04, 0x02}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01}, {0x1c, 0x0a},
+       {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0}, {0x52, 0x89},
+       {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69}, {0x87, 0x04},
+       {0x8e, 0x26}, {0xa3, 0xf7}, {0xa5, 0xc0},
+};
+
+static const u8 va1j5jf8007t_20mhz_configs[][2] = {
+       {0x03, 0x90}, {0x14, 0x8f}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2},
+       {0x22, 0x83}, {0x31, 0x0d}, {0x32, 0xe0}, {0x39, 0xd3}, {0x3a, 0x00},
+       {0x3b, 0x11}, {0x3c, 0x3f},
+       {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x02}, {0x76, 0x4e}, {0x77, 0x03},
+       {0xef, 0x01}
+};
+
+static const u8 va1j5jf8007t_25mhz_configs[][2] = {
+       {0x03, 0x90}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2}, {0x22, 0x83},
+       {0x3a, 0x04}, {0x3b, 0x11}, {0x3c, 0x3f}, {0x5c, 0x40}, {0x5f, 0x80},
+       {0x75, 0x0a}, {0x76, 0x4c}, {0x77, 0x03}, {0xef, 0x01}
+};
+
+static int config_demod(struct i2c_client *cl, enum pt1_fe_clk clk)
+{
+       int ret;
+       u8 buf[2] = {0x01, 0x80};
+       bool is_sat;
+       const u8 (*cfg_data)[2];
+       int i, len;
+
+       ret = i2c_master_send(cl, buf, 2);
+       if (ret < 0)
+               return ret;
+       usleep_range(30000, 50000);
+
+       is_sat = !strncmp(cl->name, TC90522_I2C_DEV_SAT,
+                         strlen(TC90522_I2C_DEV_SAT));
+       if (is_sat) {
+               struct i2c_msg msg[2];
+               u8 wbuf, rbuf;
+
+               wbuf = 0x07;
+               msg[0].addr = cl->addr;
+               msg[0].flags = 0;
+               msg[0].len = 1;
+               msg[0].buf = &wbuf;
+
+               msg[1].addr = cl->addr;
+               msg[1].flags = I2C_M_RD;
+               msg[1].len = 1;
+               msg[1].buf = &rbuf;
+               ret = i2c_transfer(cl->adapter, msg, 2);
+               if (ret < 0)
+                       return ret;
+               if (rbuf != 0x41)
+                       return -EIO;
+       }
+
+       /* frontend init */
+       if (clk == PT1_FE_CLK_20MHZ) {
+               if (is_sat) {
+                       cfg_data = va1j5jf8007s_20mhz_configs;
+                       len = ARRAY_SIZE(va1j5jf8007s_20mhz_configs);
+               } else {
+                       cfg_data = va1j5jf8007t_20mhz_configs;
+                       len = ARRAY_SIZE(va1j5jf8007t_20mhz_configs);
+               }
+       } else {
+               if (is_sat) {
+                       cfg_data = va1j5jf8007s_25mhz_configs;
+                       len = ARRAY_SIZE(va1j5jf8007s_25mhz_configs);
+               } else {
+                       cfg_data = va1j5jf8007t_25mhz_configs;
+                       len = ARRAY_SIZE(va1j5jf8007t_25mhz_configs);
+               }
+       }
+
+       for (i = 0; i < len; i++) {
+               ret = i2c_master_send(cl, cfg_data[i], 2);
+               if (ret < 0)
+                       return ret;
+       }
+       return 0;
+}
+
 static void pt1_write_reg(struct pt1 *pt1, int reg, u32 data)
 {
        writel(data, pt1->regs + reg * 4);
@@ -171,7 +325,7 @@ static int pt1_unlock(struct pt1 *pt1)
        for (i = 0; i < 3; i++) {
                if (pt1_read_reg(pt1, 0) & 0x80000000)
                        return 0;
-               schedule_timeout_uninterruptible((HZ + 999) / 1000);
+               usleep_range(1000, 2000);
        }
        dev_err(&pt1->pdev->dev, "could not unlock\n");
        return -EIO;
@@ -185,7 +339,7 @@ static int pt1_reset_pci(struct pt1 *pt1)
        for (i = 0; i < 10; i++) {
                if (pt1_read_reg(pt1, 0) & 0x00000001)
                        return 0;
-               schedule_timeout_uninterruptible((HZ + 999) / 1000);
+               usleep_range(1000, 2000);
        }
        dev_err(&pt1->pdev->dev, "could not reset PCI\n");
        return -EIO;
@@ -199,7 +353,7 @@ static int pt1_reset_ram(struct pt1 *pt1)
        for (i = 0; i < 10; i++) {
                if (pt1_read_reg(pt1, 0) & 0x00000002)
                        return 0;
-               schedule_timeout_uninterruptible((HZ + 999) / 1000);
+               usleep_range(1000, 2000);
        }
        dev_err(&pt1->pdev->dev, "could not reset RAM\n");
        return -EIO;
@@ -216,7 +370,7 @@ static int pt1_do_enable_ram(struct pt1 *pt1)
                        if ((pt1_read_reg(pt1, 0) & 0x00000004) != status)
                                return 0;
                }
-               schedule_timeout_uninterruptible((HZ + 999) / 1000);
+               usleep_range(1000, 2000);
        }
        dev_err(&pt1->pdev->dev, "could not enable RAM\n");
        return -EIO;
@@ -226,7 +380,7 @@ static int pt1_enable_ram(struct pt1 *pt1)
 {
        int i, ret;
        int phase;
-       schedule_timeout_uninterruptible((HZ + 999) / 1000);
+       usleep_range(1000, 2000);
        phase = pt1->pdev->device == 0x211a ? 128 : 166;
        for (i = 0; i < phase; i++) {
                ret = pt1_do_enable_ram(pt1);
@@ -311,16 +465,31 @@ static int pt1_thread(void *data)
 {
        struct pt1 *pt1;
        struct pt1_buffer_page *page;
+       bool was_frozen;
+
+#define PT1_FETCH_DELAY 10
+#define PT1_FETCH_DELAY_DELTA 2
 
        pt1 = data;
        set_freezable();
 
-       while (!kthread_should_stop()) {
-               try_to_freeze();
+       while (!kthread_freezable_should_stop(&was_frozen)) {
+               if (was_frozen) {
+                       int i;
+
+                       for (i = 0; i < PT1_NR_ADAPS; i++)
+                               pt1_set_stream(pt1, i, !!pt1->adaps[i]->users);
+               }
 
                page = pt1->tables[pt1->table_index].bufs[pt1->buf_index].page;
                if (!pt1_filter(pt1, page)) {
-                       schedule_timeout_interruptible((HZ + 999) / 1000);
+                       ktime_t delay;
+
+                       delay = ktime_set(0, PT1_FETCH_DELAY * NSEC_PER_MSEC);
+                       set_current_state(TASK_INTERRUPTIBLE);
+                       schedule_hrtimeout_range(&delay,
+                                       PT1_FETCH_DELAY_DELTA * NSEC_PER_MSEC,
+                                       HRTIMER_MODE_REL);
                        continue;
                }
 
@@ -446,7 +615,7 @@ static int pt1_init_tables(struct pt1 *pt1)
        if (!pt1_nr_tables)
                return 0;
 
-       tables = vmalloc(sizeof(struct pt1_table) * pt1_nr_tables);
+       tables = vmalloc(array_size(pt1_nr_tables, sizeof(struct pt1_table)));
        if (tables == NULL)
                return -ENOMEM;
 
@@ -556,7 +725,7 @@ pt1_update_power(struct pt1 *pt1)
                adap = pt1->adaps[i];
                switch (adap->voltage) {
                case SEC_VOLTAGE_13: /* actually 11V */
-                       bits |= 1 << 1;
+                       bits |= 1 << 2;
                        break;
                case SEC_VOLTAGE_18: /* actually 15V */
                        bits |= 1 << 1 | 1 << 2;
@@ -589,30 +758,33 @@ static int pt1_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage)
 static int pt1_sleep(struct dvb_frontend *fe)
 {
        struct pt1_adapter *adap;
+       int ret;
 
        adap = container_of(fe->dvb, struct pt1_adapter, adap);
-       adap->sleep = 1;
-       pt1_update_power(adap->pt1);
 
+       ret = 0;
        if (adap->orig_sleep)
-               return adap->orig_sleep(fe);
-       else
-               return 0;
+               ret = adap->orig_sleep(fe);
+
+       adap->sleep = 1;
+       pt1_update_power(adap->pt1);
+       return ret;
 }
 
 static int pt1_wakeup(struct dvb_frontend *fe)
 {
        struct pt1_adapter *adap;
+       int ret;
 
        adap = container_of(fe->dvb, struct pt1_adapter, adap);
        adap->sleep = 0;
        pt1_update_power(adap->pt1);
-       schedule_timeout_uninterruptible((HZ + 999) / 1000);
+       usleep_range(1000, 2000);
 
-       if (adap->orig_init)
-               return adap->orig_init(fe);
-       else
-               return 0;
+       ret = config_demod(adap->demod_i2c_client, adap->pt1->fe_clk);
+       if (ret == 0 && adap->orig_init)
+               ret = adap->orig_init(fe);
+       return ret;
 }
 
 static void pt1_free_adapter(struct pt1_adapter *adap)
@@ -735,6 +907,8 @@ static int pt1_init_adapters(struct pt1 *pt1)
 static void pt1_cleanup_frontend(struct pt1_adapter *adap)
 {
        dvb_unregister_frontend(adap->fe);
+       dvb_module_release(adap->tuner_i2c_client);
+       dvb_module_release(adap->demod_i2c_client);
 }
 
 static int pt1_init_frontend(struct pt1_adapter *adap, struct dvb_frontend *fe)
@@ -763,112 +937,70 @@ static void pt1_cleanup_frontends(struct pt1 *pt1)
                pt1_cleanup_frontend(pt1->adaps[i]);
 }
 
-struct pt1_config {
-       struct va1j5jf8007s_config va1j5jf8007s_config;
-       struct va1j5jf8007t_config va1j5jf8007t_config;
-};
-
-static const struct pt1_config pt1_configs[2] = {
-       {
-               {
-                       .demod_address = 0x1b,
-                       .frequency = VA1J5JF8007S_20MHZ,
-               },
-               {
-                       .demod_address = 0x1a,
-                       .frequency = VA1J5JF8007T_20MHZ,
-               },
-       }, {
-               {
-                       .demod_address = 0x19,
-                       .frequency = VA1J5JF8007S_20MHZ,
-               },
-               {
-                       .demod_address = 0x18,
-                       .frequency = VA1J5JF8007T_20MHZ,
-               },
-       },
-};
-
-static const struct pt1_config pt2_configs[2] = {
-       {
-               {
-                       .demod_address = 0x1b,
-                       .frequency = VA1J5JF8007S_25MHZ,
-               },
-               {
-                       .demod_address = 0x1a,
-                       .frequency = VA1J5JF8007T_25MHZ,
-               },
-       }, {
-               {
-                       .demod_address = 0x19,
-                       .frequency = VA1J5JF8007S_25MHZ,
-               },
-               {
-                       .demod_address = 0x18,
-                       .frequency = VA1J5JF8007T_25MHZ,
-               },
-       },
-};
-
 static int pt1_init_frontends(struct pt1 *pt1)
 {
-       int i, j;
-       struct i2c_adapter *i2c_adap;
-       const struct pt1_config *configs, *config;
-       struct dvb_frontend *fe[4];
+       int i;
        int ret;
 
-       i = 0;
-       j = 0;
-
-       i2c_adap = &pt1->i2c_adap;
-       configs = pt1->pdev->device == 0x211a ? pt1_configs : pt2_configs;
-       do {
-               config = &configs[i / 2];
-
-               fe[i] = va1j5jf8007s_attach(&config->va1j5jf8007s_config,
-                                           i2c_adap);
-               if (!fe[i]) {
-                       ret = -ENODEV; /* This does not sound nice... */
-                       goto err;
-               }
-               i++;
-
-               fe[i] = va1j5jf8007t_attach(&config->va1j5jf8007t_config,
-                                           i2c_adap);
-               if (!fe[i]) {
-                       ret = -ENODEV;
-                       goto err;
+       for (i = 0; i < ARRAY_SIZE(pt1_configs); i++) {
+               const struct i2c_board_info *info;
+               struct tc90522_config dcfg;
+               struct i2c_client *cl;
+
+               info = &pt1_configs[i].demod_info;
+               dcfg = pt1_configs[i].demod_cfg;
+               dcfg.tuner_i2c = NULL;
+
+               ret = -ENODEV;
+               cl = dvb_module_probe("tc90522", info->type, &pt1->i2c_adap,
+                                     info->addr, &dcfg);
+               if (!cl)
+                       goto fe_unregister;
+               pt1->adaps[i]->demod_i2c_client = cl;
+
+               if (!strncmp(cl->name, TC90522_I2C_DEV_SAT,
+                            strlen(TC90522_I2C_DEV_SAT))) {
+                       struct qm1d1b0004_config tcfg;
+
+                       info = &pt1_configs[i].tuner_info;
+                       tcfg = pt1_configs[i].tuner_cfg.qm1d1b0004;
+                       tcfg.fe = dcfg.fe;
+                       cl = dvb_module_probe("qm1d1b0004",
+                                             info->type, dcfg.tuner_i2c,
+                                             info->addr, &tcfg);
+               } else {
+                       struct dvb_pll_config tcfg;
+
+                       info = &pt1_configs[i].tuner_info;
+                       tcfg = pt1_configs[i].tuner_cfg.tda6651;
+                       tcfg.fe = dcfg.fe;
+                       cl = dvb_module_probe("dvb_pll",
+                                             info->type, dcfg.tuner_i2c,
+                                             info->addr, &tcfg);
                }
-               i++;
-
-               ret = va1j5jf8007s_prepare(fe[i - 2]);
-               if (ret < 0)
-                       goto err;
+               if (!cl)
+                       goto demod_release;
+               pt1->adaps[i]->tuner_i2c_client = cl;
 
-               ret = va1j5jf8007t_prepare(fe[i - 1]);
-               if (ret < 0)
-                       goto err;
-
-       } while (i < 4);
-
-       do {
-               ret = pt1_init_frontend(pt1->adaps[j], fe[j]);
+               ret = pt1_init_frontend(pt1->adaps[i], dcfg.fe);
                if (ret < 0)
-                       goto err;
-       } while (++j < 4);
+                       goto tuner_release;
+       }
 
        return 0;
 
-err:
-       while (i-- > j)
-               fe[i]->ops.release(fe[i]);
-
-       while (j--)
-               dvb_unregister_frontend(fe[j]);
-
+tuner_release:
+       dvb_module_release(pt1->adaps[i]->tuner_i2c_client);
+demod_release:
+       dvb_module_release(pt1->adaps[i]->demod_i2c_client);
+fe_unregister:
+       dev_warn(&pt1->pdev->dev, "failed to init FE(%d).\n", i);
+       i--;
+       for (; i >= 0; i--) {
+               dvb_unregister_frontend(pt1->adaps[i]->fe);
+               dvb_module_release(pt1->adaps[i]->tuner_i2c_client);
+               dvb_module_release(pt1->adaps[i]->demod_i2c_client);
+       }
        return ret;
 }
 
@@ -954,7 +1086,7 @@ static int pt1_i2c_end(struct pt1 *pt1, int addr)
        do {
                if (signal_pending(current))
                        return -EINTR;
-               schedule_timeout_interruptible((HZ + 999) / 1000);
+               usleep_range(1000, 2000);
        } while (pt1_read_reg(pt1, 0) & 0x00000080);
        return 0;
 }
@@ -1052,6 +1184,98 @@ static void pt1_i2c_init(struct pt1 *pt1)
                pt1_i2c_emit(pt1, i, 0, 0, 1, 1, 0);
 }
 
+#ifdef CONFIG_PM_SLEEP
+
+static int pt1_suspend(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct pt1 *pt1 = pci_get_drvdata(pdev);
+
+       pt1_init_streams(pt1);
+       pt1_disable_ram(pt1);
+       pt1->power = 0;
+       pt1->reset = 1;
+       pt1_update_power(pt1);
+       return 0;
+}
+
+static int pt1_resume(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct pt1 *pt1 = pci_get_drvdata(pdev);
+       int ret;
+       int i;
+
+       pt1->power = 0;
+       pt1->reset = 1;
+       pt1_update_power(pt1);
+
+       pt1_i2c_init(pt1);
+       pt1_i2c_wait(pt1);
+
+       ret = pt1_sync(pt1);
+       if (ret < 0)
+               goto resume_err;
+
+       pt1_identify(pt1);
+
+       ret = pt1_unlock(pt1);
+       if (ret < 0)
+               goto resume_err;
+
+       ret = pt1_reset_pci(pt1);
+       if (ret < 0)
+               goto resume_err;
+
+       ret = pt1_reset_ram(pt1);
+       if (ret < 0)
+               goto resume_err;
+
+       ret = pt1_enable_ram(pt1);
+       if (ret < 0)
+               goto resume_err;
+
+       pt1_init_streams(pt1);
+
+       pt1->power = 1;
+       pt1_update_power(pt1);
+       msleep(20);
+
+       pt1->reset = 0;
+       pt1_update_power(pt1);
+       usleep_range(1000, 2000);
+
+       for (i = 0; i < PT1_NR_ADAPS; i++)
+               dvb_frontend_reinitialise(pt1->adaps[i]->fe);
+
+       pt1_init_table_count(pt1);
+       for (i = 0; i < pt1_nr_tables; i++) {
+               int j;
+
+               for (j = 0; j < PT1_NR_BUFS; j++)
+                       pt1->tables[i].bufs[j].page->upackets[PT1_NR_UPACKETS-1]
+                               = 0;
+               pt1_increment_table_count(pt1);
+       }
+       pt1_register_tables(pt1, pt1->tables[0].addr >> PT1_PAGE_SHIFT);
+
+       pt1->table_index = 0;
+       pt1->buf_index = 0;
+       for (i = 0; i < PT1_NR_ADAPS; i++) {
+               pt1->adaps[i]->upacket_count = 0;
+               pt1->adaps[i]->packet_count = 0;
+               pt1->adaps[i]->st_count = -1;
+       }
+
+       return 0;
+
+resume_err:
+       dev_info(&pt1->pdev->dev, "failed to resume PT1/PT2.");
+       return 0;       /* resume anyway */
+}
+
+#endif /* CONFIG_PM_SLEEP */
+
 static void pt1_remove(struct pci_dev *pdev)
 {
        struct pt1 *pt1;
@@ -1112,6 +1336,8 @@ static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        mutex_init(&pt1->lock);
        pt1->pdev = pdev;
        pt1->regs = regs;
+       pt1->fe_clk = (pdev->device == 0x211a) ?
+                               PT1_FE_CLK_20MHZ : PT1_FE_CLK_25MHZ;
        pci_set_drvdata(pdev, pt1);
 
        ret = pt1_init_adapters(pt1);
@@ -1163,11 +1389,11 @@ static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        pt1->power = 1;
        pt1_update_power(pt1);
-       schedule_timeout_uninterruptible((HZ + 49) / 50);
+       msleep(20);
 
        pt1->reset = 0;
        pt1_update_power(pt1);
-       schedule_timeout_uninterruptible((HZ + 999) / 1000);
+       usleep_range(1000, 2000);
 
        ret = pt1_init_frontends(pt1);
        if (ret < 0)
@@ -1210,11 +1436,16 @@ static const struct pci_device_id pt1_id_table[] = {
 };
 MODULE_DEVICE_TABLE(pci, pt1_id_table);
 
+static SIMPLE_DEV_PM_OPS(pt1_pm_ops, pt1_suspend, pt1_resume);
+
 static struct pci_driver pt1_driver = {
        .name           = DRIVER_NAME,
        .probe          = pt1_probe,
        .remove         = pt1_remove,
        .id_table       = pt1_id_table,
+#ifdef CONFIG_PM_SLEEP
+       .driver.pm      = &pt1_pm_ops,
+#endif
 };
 
 module_pci_driver(pt1_driver);