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at86rf230: rework tx power support 

This patch adds support for get transmit power levels and reworks the
set of transmit power levels which was broken before.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-05-17 21:44:49 +02:00 committed by Marcel Holtmann
parent 8377d22c03
commit 6f4da3f897
1 changed files with 64 additions and 19 deletions
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83
drivers/net/ieee802154/at86rf230.c
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@ -51,6 +51,7 @@ struct at86rf2xx_chip_data {
int (*set_channel)(struct at86rf230_local *, u8, u8);
int (*get_desense_steps)(struct at86rf230_local *, s32);
int (*set_txpower)(struct at86rf230_local *, s32);
};
#define AT86RF2XX_MAX_BUF (127 + 3)
@ -124,9 +125,12 @@ struct at86rf230_local {
#define SR_IRQ_2_EXT_EN 0x04, 0x40, 6
#define SR_PA_EXT_EN 0x04, 0x80, 7
#define RG_PHY_TX_PWR (0x05)
#define SR_TX_PWR 0x05, 0x0f, 0
#define SR_PA_LT 0x05, 0x30, 4
#define SR_PA_BUF_LT 0x05, 0xc0, 6
#define SR_TX_PWR_23X 0x05, 0x0f, 0
#define SR_PA_LT_230 0x05, 0x30, 4
#define SR_PA_BUF_LT_230 0x05, 0xc0, 6
#define SR_TX_PWR_212 0x05, 0x1f, 0
#define SR_GC_PA_212 0x05, 0x60, 5
#define SR_PA_BOOST_LT_212 0x05, 0x80, 7
#define RG_PHY_RSSI (0x06)
#define SR_RSSI 0x06, 0x1f, 0
#define SR_RND_VALUE 0x06, 0x60, 5
@ -1193,24 +1197,56 @@ at86rf230_set_hw_addr_filt(struct ieee802154_hw *hw,
return 0;
}
#define AT86RF23X_MAX_TX_POWERS 0xF
static const s32 at86rf233_powers[AT86RF23X_MAX_TX_POWERS + 1] = {
400, 370, 340, 300, 250, 200, 100, 0, -100, -200, -300, -400, -600,
-800, -1200, -1700,
};
static const s32 at86rf231_powers[AT86RF23X_MAX_TX_POWERS + 1] = {
300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
-900, -1200, -1700,
};
#define AT86RF212_MAX_TX_POWERS 0x1F
static const s32 at86rf212_powers[AT86RF212_MAX_TX_POWERS + 1] = {
500, 400, 300, 200, 100, 0, -100, -200, -300, -400, -500, -600, -700,
-800, -900, -1000, -1100, -1200, -1300, -1400, -1500, -1600, -1700,
-1800, -1900, -2000, -2100, -2200, -2300, -2400, -2500, -2600,
};
static int
at86rf23x_set_txpower(struct at86rf230_local *lp, s32 mbm)
{
u32 i;
for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) {
if (lp->hw->phy->supported.tx_powers[i] == mbm)
return at86rf230_write_subreg(lp, SR_TX_PWR_23X, i);
}
return -EINVAL;
}
static int
at86rf212_set_txpower(struct at86rf230_local *lp, s32 mbm)
{
u32 i;
for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) {
if (lp->hw->phy->supported.tx_powers[i] == mbm)
return at86rf230_write_subreg(lp, SR_TX_PWR_212, i);
}
return -EINVAL;
}
static int
at86rf230_set_txpower(struct ieee802154_hw *hw, s32 mbm)
{
struct at86rf230_local *lp = hw->priv;
s8 db = mbm / 100;
/* typical maximum output is 5dBm with RG_PHY_TX_PWR 0x60, lower five
* bits decrease power in 1dB steps. 0x60 represents extra PA gain of
* 0dB.
* thus, supported values for db range from -26 to 5, for 31dB of
* reduction to 0dB of reduction.
*/
if (db > 5 || db < -26)
return -EINVAL;
db = -(db - 5);
return __at86rf230_write(lp, RG_PHY_TX_PWR, 0x60 | db);
return lp->data->set_txpower(lp, mbm);
}
static int
@ -1367,7 +1403,8 @@ static struct at86rf2xx_chip_data at86rf233_data = {
.t_p_ack = 545,
.rssi_base_val = -91,
.set_channel = at86rf23x_set_channel,
.get_desense_steps = at86rf23x_get_desens_steps
.get_desense_steps = at86rf23x_get_desens_steps,
.set_txpower = at86rf23x_set_txpower,
};
static struct at86rf2xx_chip_data at86rf231_data = {
@ -1380,7 +1417,8 @@ static struct at86rf2xx_chip_data at86rf231_data = {
.t_p_ack = 545,
.rssi_base_val = -91,
.set_channel = at86rf23x_set_channel,
.get_desense_steps = at86rf23x_get_desens_steps
.get_desense_steps = at86rf23x_get_desens_steps,
.set_txpower = at86rf23x_set_txpower,
};
static struct at86rf2xx_chip_data at86rf212_data = {
@ -1393,7 +1431,8 @@ static struct at86rf2xx_chip_data at86rf212_data = {
.t_p_ack = 545,
.rssi_base_val = -100,
.set_channel = at86rf212_set_channel,
.get_desense_steps = at86rf212_get_desens_steps
.get_desense_steps = at86rf212_get_desens_steps,
.set_txpower = at86rf212_set_txpower,
};
static int at86rf230_hw_init(struct at86rf230_local *lp, u8 xtal_trim)
@ -1592,6 +1631,8 @@ at86rf230_detect_device(struct at86rf230_local *lp)
lp->hw->phy->supported.channels[0] = 0x7FFF800;
lp->hw->phy->current_channel = 11;
lp->hw->phy->symbol_duration = 16;
lp->hw->phy->supported.tx_powers = at86rf231_powers;
lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf231_powers);
break;
case 7:
chip = "at86rf212";
@ -1602,6 +1643,8 @@ at86rf230_detect_device(struct at86rf230_local *lp)
lp->hw->phy->current_channel = 5;
lp->hw->phy->symbol_duration = 25;
lp->hw->phy->supported.lbt = NL802154_SUPPORTED_BOOL_BOTH;
lp->hw->phy->supported.tx_powers = at86rf212_powers;
lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf212_powers);
break;
case 11:
chip = "at86rf233";
@ -1609,6 +1652,8 @@ at86rf230_detect_device(struct at86rf230_local *lp)
lp->hw->phy->supported.channels[0] = 0x7FFF800;
lp->hw->phy->current_channel = 13;
lp->hw->phy->symbol_duration = 16;
lp->hw->phy->supported.tx_powers = at86rf233_powers;
lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf233_powers);
break;
default:
chip = "unknown";