}
}
-static struct regmap_config at86rf230_regmap_spi_config = {
+static const struct regmap_config at86rf230_regmap_spi_config = {
.reg_bits = 8,
.val_bits = 8,
.write_flag_mask = CMD_REG | CMD_WRITE,
ieee802154_wake_queue(lp->hw);
}
-static void
+static inline void
at86rf230_async_error(struct at86rf230_local *lp,
struct at86rf230_state_change *ctx, int rc)
{
}
}
-
dev_warn(&lp->spi->dev, "unexcept state change from 0x%02x to 0x%02x. Actual state: 0x%02x\n",
ctx->from_state, ctx->to_state, trx_state);
}
if (ctx->irq_enable)
enable_irq(lp->spi->irq);
- at86rf230_async_error(lp, &lp->state, rc);
+ at86rf230_async_error(lp, ctx, rc);
}
}
static int
at86rf230_sync_state_change(struct at86rf230_local *lp, unsigned int state)
{
- int rc;
+ unsigned long rc;
at86rf230_async_state_change(lp, &lp->state, state,
at86rf230_sync_state_change_complete,
enable_irq(lp->spi->irq);
- if (lp->max_frame_retries <= 0)
- ieee802154_xmit_complete(lp->hw, skb, true);
- else
- ieee802154_xmit_complete(lp->hw, skb, false);
+ ieee802154_xmit_complete(lp->hw, skb, !lp->tx_aret);
}
static void
* to STATE_FORCE_TRX_OFF then STATE_TX_ON to recover the transceiver
* state to TX_ON.
*/
- if (trac) {
+ if (trac)
at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF,
at86rf230_tx_trac_error, true);
- return;
- }
-
- at86rf230_tx_on(context);
+ else
+ at86rf230_tx_on(context);
}
-
static void
at86rf230_tx_trac_status(void *context)
{
u16 addr = le16_to_cpu(filt->short_addr);
dev_vdbg(&lp->spi->dev,
- "at86rf230_set_hw_addr_filt called for saddr\n");
+ "at86rf230_set_hw_addr_filt called for saddr\n");
__at86rf230_write(lp, RG_SHORT_ADDR_0, addr);
__at86rf230_write(lp, RG_SHORT_ADDR_1, addr >> 8);
}
u16 pan = le16_to_cpu(filt->pan_id);
dev_vdbg(&lp->spi->dev,
- "at86rf230_set_hw_addr_filt called for pan id\n");
+ "at86rf230_set_hw_addr_filt called for pan id\n");
__at86rf230_write(lp, RG_PAN_ID_0, pan);
__at86rf230_write(lp, RG_PAN_ID_1, pan >> 8);
}
memcpy(addr, &filt->ieee_addr, 8);
dev_vdbg(&lp->spi->dev,
- "at86rf230_set_hw_addr_filt called for IEEE addr\n");
+ "at86rf230_set_hw_addr_filt called for IEEE addr\n");
for (i = 0; i < 8; i++)
__at86rf230_write(lp, RG_IEEE_ADDR_0 + i, addr[i]);
}
if (changed & IEEE802154_AFILT_PANC_CHANGED) {
dev_vdbg(&lp->spi->dev,
- "at86rf230_set_hw_addr_filt called for panc change\n");
+ "at86rf230_set_hw_addr_filt called for panc change\n");
if (filt->pan_coord)
at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 1);
else
}
static int
-at86rf230_set_cca_mode(struct ieee802154_hw *hw, u8 mode)
+at86rf230_set_cca_mode(struct ieee802154_hw *hw,
+ const struct wpan_phy_cca *cca)
{
struct at86rf230_local *lp = hw->priv;
+ u8 val;
+
+ /* mapping 802.15.4 to driver spec */
+ switch (cca->mode) {
+ case NL802154_CCA_ENERGY:
+ val = 1;
+ break;
+ case NL802154_CCA_CARRIER:
+ val = 2;
+ break;
+ case NL802154_CCA_ENERGY_CARRIER:
+ switch (cca->opt) {
+ case NL802154_CCA_OPT_ENERGY_CARRIER_AND:
+ val = 3;
+ break;
+ case NL802154_CCA_OPT_ENERGY_CARRIER_OR:
+ val = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
- return at86rf230_write_subreg(lp, SR_CCA_MODE, mode);
+ return at86rf230_write_subreg(lp, SR_CCA_MODE, val);
}
static int
.get_desense_steps = at86rf212_get_desens_steps
};
-static int at86rf230_hw_init(struct at86rf230_local *lp)
+static int at86rf230_hw_init(struct at86rf230_local *lp, u8 xtal_trim)
{
int rc, irq_type, irq_pol = IRQ_ACTIVE_HIGH;
unsigned int dvdd;
usleep_range(lp->data->t_sleep_cycle,
lp->data->t_sleep_cycle + 100);
+ /* xtal_trim value is calculated by:
+ * CL = 0.5 * (CX + CTRIM + CPAR)
+ *
+ * whereas:
+ * CL = capacitor of used crystal
+ * CX = connected capacitors at xtal pins
+ * CPAR = in all at86rf2xx datasheets this is a constant value 3 pF,
+ * but this is different on each board setup. You need to fine
+ * tuning this value via CTRIM.
+ * CTRIM = variable capacitor setting. Resolution is 0.3 pF range is
+ * 0 pF upto 4.5 pF.
+ *
+ * Examples:
+ * atben transceiver:
+ *
+ * CL = 8 pF
+ * CX = 12 pF
+ * CPAR = 3 pF (We assume the magic constant from datasheet)
+ * CTRIM = 0.9 pF
+ *
+ * (12+0.9+3)/2 = 7.95 which is nearly at 8 pF
+ *
+ * xtal_trim = 0x3
+ *
+ * openlabs transceiver:
+ *
+ * CL = 16 pF
+ * CX = 22 pF
+ * CPAR = 3 pF (We assume the magic constant from datasheet)
+ * CTRIM = 4.5 pF
+ *
+ * (22+4.5+3)/2 = 14.75 which is the nearest value to 16 pF
+ *
+ * xtal_trim = 0xf
+ */
+ rc = at86rf230_write_subreg(lp, SR_XTAL_TRIM, xtal_trim);
+ if (rc)
+ return rc;
+
rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &dvdd);
if (rc)
return rc;
return at86rf230_write_subreg(lp, SR_SLOTTED_OPERATION, 0);
}
-static struct at86rf230_platform_data *
-at86rf230_get_pdata(struct spi_device *spi)
+static int
+at86rf230_get_pdata(struct spi_device *spi, int *rstn, int *slp_tr,
+ u8 *xtal_trim)
{
- struct at86rf230_platform_data *pdata;
+ struct at86rf230_platform_data *pdata = spi->dev.platform_data;
+ int ret;
- if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node)
- return spi->dev.platform_data;
+ if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node) {
+ if (!pdata)
+ return -ENOENT;
- pdata = devm_kzalloc(&spi->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- goto done;
+ *rstn = pdata->rstn;
+ *slp_tr = pdata->slp_tr;
+ *xtal_trim = pdata->xtal_trim;
+ return 0;
+ }
- pdata->rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0);
- pdata->slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0);
+ *rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0);
+ *slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0);
+ ret = of_property_read_u8(spi->dev.of_node, "xtal-trim", xtal_trim);
+ if (ret < 0 && ret != -EINVAL)
+ return ret;
- spi->dev.platform_data = pdata;
-done:
- return pdata;
+ return 0;
}
static int
if (rc)
return rc;
- rc = __at86rf230_read(lp, RG_PART_NUM, &version);
+ rc = __at86rf230_read(lp, RG_VERSION_NUM, &version);
if (rc)
return rc;
return -EINVAL;
}
- lp->hw->extra_tx_headroom = 0;
lp->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AACK |
IEEE802154_HW_TXPOWER | IEEE802154_HW_ARET |
IEEE802154_HW_AFILT | IEEE802154_HW_PROMISCUOUS;
+ lp->hw->phy->cca.mode = NL802154_CCA_ENERGY;
+
switch (part) {
case 2:
chip = "at86rf230";
break;
case 7:
chip = "at86rf212";
- if (version == 1) {
- lp->data = &at86rf212_data;
- lp->hw->flags |= IEEE802154_HW_LBT;
- lp->hw->phy->channels_supported[0] = 0x00007FF;
- lp->hw->phy->channels_supported[2] = 0x00007FF;
- lp->hw->phy->current_channel = 5;
- lp->hw->phy->symbol_duration = 25;
- } else {
- rc = -ENOTSUPP;
- }
+ lp->data = &at86rf212_data;
+ lp->hw->flags |= IEEE802154_HW_LBT;
+ lp->hw->phy->channels_supported[0] = 0x00007FF;
+ lp->hw->phy->channels_supported[2] = 0x00007FF;
+ lp->hw->phy->current_channel = 5;
+ lp->hw->phy->symbol_duration = 25;
break;
case 11:
chip = "at86rf233";
lp->hw->phy->symbol_duration = 16;
break;
default:
- chip = "unkown";
+ chip = "unknown";
rc = -ENOTSUPP;
break;
}
static int at86rf230_probe(struct spi_device *spi)
{
- struct at86rf230_platform_data *pdata;
struct ieee802154_hw *hw;
struct at86rf230_local *lp;
unsigned int status;
- int rc, irq_type;
+ int rc, irq_type, rstn, slp_tr;
+ u8 xtal_trim;
if (!spi->irq) {
dev_err(&spi->dev, "no IRQ specified\n");
return -EINVAL;
}
- pdata = at86rf230_get_pdata(spi);
- if (!pdata) {
- dev_err(&spi->dev, "no platform_data\n");
- return -EINVAL;
+ rc = at86rf230_get_pdata(spi, &rstn, &slp_tr, &xtal_trim);
+ if (rc < 0) {
+ dev_err(&spi->dev, "failed to parse platform_data: %d\n", rc);
+ return rc;
}
- if (gpio_is_valid(pdata->rstn)) {
- rc = devm_gpio_request_one(&spi->dev, pdata->rstn,
+ if (gpio_is_valid(rstn)) {
+ rc = devm_gpio_request_one(&spi->dev, rstn,
GPIOF_OUT_INIT_HIGH, "rstn");
if (rc)
return rc;
}
- if (gpio_is_valid(pdata->slp_tr)) {
- rc = devm_gpio_request_one(&spi->dev, pdata->slp_tr,
+ if (gpio_is_valid(slp_tr)) {
+ rc = devm_gpio_request_one(&spi->dev, slp_tr,
GPIOF_OUT_INIT_LOW, "slp_tr");
if (rc)
return rc;
}
/* Reset */
- if (gpio_is_valid(pdata->rstn)) {
+ if (gpio_is_valid(rstn)) {
udelay(1);
- gpio_set_value(pdata->rstn, 0);
+ gpio_set_value(rstn, 0);
udelay(1);
- gpio_set_value(pdata->rstn, 1);
+ gpio_set_value(rstn, 1);
usleep_range(120, 240);
}
spi_set_drvdata(spi, lp);
- rc = at86rf230_hw_init(lp);
+ rc = at86rf230_hw_init(lp, xtal_trim);
if (rc)
goto free_dev;
projects / deliverable / linux.git / blobdiff