diff options
| -rw-r--r-- | drivers/media/i2c/smiapp/smiapp-core.c | 103 | ||||
| -rw-r--r-- | drivers/media/i2c/smiapp/smiapp.h | 3 | ||||
| -rw-r--r-- | include/media/i2c/smiapp.h | 1 |
3 files changed, 50 insertions, 57 deletions
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index 5a04ae2544aa..a274527987b8 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -971,10 +971,14 @@ static int smiapp_update_mode(struct smiapp_sensor *sensor) * */ -static int smiapp_read_nvm_page(struct smiapp_sensor *sensor, u32 p, u8 *nvm) +static int smiapp_read_nvm_page(struct smiapp_sensor *sensor, u32 p, u8 *nvm, + u8 *status) { unsigned int i; int rval; + u32 s; + + *status = 0; rval = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p); @@ -986,10 +990,21 @@ static int smiapp_read_nvm_page(struct smiapp_sensor *sensor, u32 p, u8 *nvm) if (rval) return rval; + rval = smiapp_read(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, + &s); + if (rval) + return rval; + + if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_EUSAGE) { + *status = s; + return -ENODATA; + } + if (sensor->limits[SMIAPP_LIMIT_DATA_TRANSFER_IF_CAPABILITY] & SMIAPP_DATA_TRANSFER_IF_CAPABILITY_POLL) { for (i = 1000; i > 0; i--) { - u32 s; + if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY) + break; rval = smiapp_read( sensor, @@ -998,10 +1013,6 @@ static int smiapp_read_nvm_page(struct smiapp_sensor *sensor, u32 p, u8 *nvm) if (rval) return rval; - - if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY) - break; - } if (!i) @@ -1023,23 +1034,27 @@ static int smiapp_read_nvm_page(struct smiapp_sensor *sensor, u32 p, u8 *nvm) return 0; } -static int smiapp_read_nvm(struct smiapp_sensor *sensor, - unsigned char *nvm) +static int smiapp_read_nvm(struct smiapp_sensor *sensor, unsigned char *nvm, + size_t nvm_size) { - u32 p, np; + u8 status = 0; + u32 p; int rval = 0, rval2; - np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE; - for (p = 0; p < np && !rval; p++) { - rval = smiapp_read_nvm_page(sensor, p, nvm); + for (p = 0; p < nvm_size / SMIAPP_NVM_PAGE_SIZE && !rval; p++) { + rval = smiapp_read_nvm_page(sensor, p, nvm, &status); nvm += SMIAPP_NVM_PAGE_SIZE; } + if (rval == -ENODATA && + status & SMIAPP_DATA_TRANSFER_IF_1_STATUS_EUSAGE) + rval = 0; + rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0); if (rval < 0) return rval; else - return rval2; + return rval2 ?: p * SMIAPP_NVM_PAGE_SIZE; } /* @@ -2326,42 +2341,34 @@ smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr, struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); struct i2c_client *client = v4l2_get_subdevdata(subdev); struct smiapp_sensor *sensor = to_smiapp_sensor(subdev); - unsigned int nbytes; + int rval; if (!sensor->dev_init_done) return -EBUSY; - if (!sensor->nvm_size) { - int rval; - - /* NVM not read yet - read it now */ - sensor->nvm_size = sensor->hwcfg->nvm_size; + rval = pm_runtime_get_sync(&client->dev); + if (rval < 0) { + if (rval != -EBUSY && rval != -EAGAIN) + pm_runtime_set_active(&client->dev); + pm_runtime_put_noidle(&client->dev); + return -ENODEV; + } - rval = pm_runtime_get_sync(&client->dev); - if (rval < 0) { - if (rval != -EBUSY && rval != -EAGAIN) - pm_runtime_set_active(&client->dev); - pm_runtime_put_noidle(&client->dev); - return -ENODEV; - } + rval = smiapp_read_nvm(sensor, buf, PAGE_SIZE); + if (rval < 0) { + pm_runtime_put(&client->dev); + dev_err(&client->dev, "nvm read failed\n"); + return -ENODEV; + } - if (smiapp_read_nvm(sensor, sensor->nvm)) { - pm_runtime_put(&client->dev); - dev_err(&client->dev, "nvm read failed\n"); - return -ENODEV; - } + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); - pm_runtime_mark_last_busy(&client->dev); - pm_runtime_put_autosuspend(&client->dev); - } /* * NVM is still way below a PAGE_SIZE, so we can safely * assume this for now. */ - nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE); - memcpy(buf, sensor->nvm, nbytes); - - return nbytes; + return rval; } static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL); @@ -2825,16 +2832,13 @@ static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev) } } - /* NVM size is not mandatory */ - fwnode_property_read_u32(fwnode, "nokia,nvm-size", &hwcfg->nvm_size); - rval = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency", &hwcfg->ext_clk); if (rval) dev_info(dev, "can't get clock-frequency\n"); - dev_dbg(dev, "nvm %d, clk %d, mode %d\n", - hwcfg->nvm_size, hwcfg->ext_clk, hwcfg->csi_signalling_mode); + dev_dbg(dev, "clk %d, mode %d\n", hwcfg->ext_clk, + hwcfg->csi_signalling_mode); if (!bus_cfg.nr_of_link_frequencies) { dev_warn(dev, "no link frequencies defined\n"); @@ -3018,17 +3022,10 @@ static int smiapp_probe(struct i2c_client *client) rval = -ENOENT; goto out_power_off; } - /* SMIA++ NVM initialization - it will be read from the sensor - * when it is first requested by userspace. - */ - if (sensor->minfo.smiapp_version && sensor->hwcfg->nvm_size) { - sensor->nvm = devm_kzalloc(&client->dev, - sensor->hwcfg->nvm_size, GFP_KERNEL); - if (sensor->nvm == NULL) { - rval = -ENOMEM; - goto out_cleanup; - } + if (sensor->minfo.smiapp_version && + sensor->limits[SMIAPP_LIMIT_DATA_TRANSFER_IF_CAPABILITY] & + SMIAPP_DATA_TRANSFER_IF_CAPABILITY_SUPPORTED) { if (device_create_file(&client->dev, &dev_attr_nvm) != 0) { dev_err(&client->dev, "sysfs nvm entry failed\n"); rval = -EBUSY; diff --git a/drivers/media/i2c/smiapp/smiapp.h b/drivers/media/i2c/smiapp/smiapp.h index ecf8a17dbe37..3ab874a5deba 100644 --- a/drivers/media/i2c/smiapp/smiapp.h +++ b/drivers/media/i2c/smiapp/smiapp.h @@ -208,9 +208,6 @@ struct smiapp_sensor { bool dev_init_done; u8 compressed_min_bpp; - u8 *nvm; /* nvm memory buffer */ - unsigned int nvm_size; /* bytes */ - struct smiapp_module_info minfo; struct smiapp_pll pll; diff --git a/include/media/i2c/smiapp.h b/include/media/i2c/smiapp.h index d6ccc859bfcd..80f8251d87a3 100644 --- a/include/media/i2c/smiapp.h +++ b/include/media/i2c/smiapp.h @@ -49,7 +49,6 @@ struct smiapp_hwconfig { unsigned short i2c_addr_dfl; /* Default i2c addr */ unsigned short i2c_addr_alt; /* Alternate i2c addr */ - uint32_t nvm_size; /* bytes */ uint32_t ext_clk; /* sensor external clk */ unsigned int lanes; /* Number of CSI-2 lanes */ |