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Re: [PATCH] rt2x00:Add RT5372 chipset support and VCO recalibration

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Hi John Li,

First of all, if you add two different features please split them up into
two patches. One for VCO calibration and one for RT5372 support.

Also, please add a suitable patch description that explains what the patch
does and why.

See some inline comments regarding the patch itself.

On Fri, Feb 3, 2012 at 7:18 AM, John Li <john.li.mediatek@xxxxxxxxx> wrote:
> From: John Li <chen-yang.li@xxxxxxxxxxxx>
>
> ---
>  drivers/net/wireless/rt2x00/Kconfig        |    2 +-
>  drivers/net/wireless/rt2x00/rt2800.h       |    1 +
>  drivers/net/wireless/rt2x00/rt2800lib.c    |  217 ++++++++++++++++++++++++----
>  drivers/net/wireless/rt2x00/rt2800lib.h    |    1 +
>  drivers/net/wireless/rt2x00/rt2800pci.c    |    2 +
>  drivers/net/wireless/rt2x00/rt2800usb.c    |   15 ++
>  drivers/net/wireless/rt2x00/rt2x00.h       |   13 ++
>  drivers/net/wireless/rt2x00/rt2x00config.c |    3 +
>  drivers/net/wireless/rt2x00/rt2x00dev.c    |    2 +
>  drivers/net/wireless/rt2x00/rt2x00lib.h    |   13 ++
>  drivers/net/wireless/rt2x00/rt2x00link.c   |   38 +++++
>  11 files changed, 279 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig
> index a0a7854..299c387 100644
> --- a/drivers/net/wireless/rt2x00/Kconfig
> +++ b/drivers/net/wireless/rt2x00/Kconfig
> @@ -163,7 +163,7 @@ config RT2800USB_RT53XX
>        depends on EXPERIMENTAL
>        ---help---
>          This adds support for rt53xx wireless chipset family to the
> -         rt2800pci driver.
> +         rt2800usb driver.
>          Supported chips: RT5370
>
>  config RT2800USB_UNKNOWN

This hunk can be a patch on its own, fixing a type.

> diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h
> index 2571a2f..56b78c8 100644
> --- a/drivers/net/wireless/rt2x00/rt2800.h
> +++ b/drivers/net/wireless/rt2x00/rt2800.h
> @@ -68,6 +68,7 @@
>  #define RF3322                         0x000c
>  #define RF3053                         0x000d
>  #define RF5370                         0x5370
> +#define RF5372                         0x5372
>  #define RF5390                         0x5390
>
>  /*
> diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
> index 22a1a8f..8778e22 100644
> --- a/drivers/net/wireless/rt2x00/rt2800lib.c
> +++ b/drivers/net/wireless/rt2x00/rt2800lib.c
> @@ -402,7 +402,8 @@ int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
>
>        if (rt2x00_is_pci(rt2x00dev)) {
>                if (rt2x00_rt(rt2x00dev, RT3572) ||
> -                   rt2x00_rt(rt2x00dev, RT5390)) {
> +                   rt2x00_rt(rt2x00dev, RT5390) ||
> +                   rt2x00_rt(rt2x00dev, RT5392)) {
>                        rt2800_register_read(rt2x00dev, AUX_CTRL, &reg);
>                        rt2x00_set_field32(&reg, AUX_CTRL_FORCE_PCIE_CLK, 1);
>                        rt2x00_set_field32(&reg, AUX_CTRL_WAKE_PCIE_EN, 1);
> @@ -1906,7 +1907,8 @@ static void rt2800_config_channel_rf53xx(struct rt2x00_dev *rt2x00dev,
>                                                   r55_nonbt_rev[idx]);
>                                rt2800_rfcsr_write(rt2x00dev, 59,
>                                                   r59_nonbt_rev[idx]);
> -                       } else if (rt2x00_rt(rt2x00dev, RT5390)) {
> +                       } else if (rt2x00_rt(rt2x00dev, RT5390) ||
> +                                          rt2x00_rt(rt2x00dev, RT5392)) {
>                                static const char r59_non_bt[] = {0x8f, 0x8f,
>                                        0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8d,
>                                        0x8a, 0x88, 0x88, 0x87, 0x87, 0x86};
> @@ -1956,6 +1958,7 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
>                rt2800_config_channel_rf3052(rt2x00dev, conf, rf, info);
>                break;
>        case RF5370:
> +       case RF5372:
>        case RF5390:
>                rt2800_config_channel_rf53xx(rt2x00dev, conf, rf, info);
>                break;
> @@ -1972,7 +1975,8 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
>        rt2800_bbp_write(rt2x00dev, 86, 0);
>
>        if (rf->channel <= 14) {
> -               if (!rt2x00_rt(rt2x00dev, RT5390)) {
> +               if (!rt2x00_rt(rt2x00dev, RT5390) ||
> +                       !rt2x00_rt(rt2x00dev, RT5392)) {
>                        if (test_bit(CAPABILITY_EXTERNAL_LNA_BG,
>                                     &rt2x00dev->cap_flags)) {
>                                rt2800_bbp_write(rt2x00dev, 82, 0x62);
> @@ -2414,6 +2418,59 @@ void rt2800_gain_calibration(struct rt2x00_dev *rt2x00dev)
>  }
>  EXPORT_SYMBOL_GPL(rt2800_gain_calibration);
>
> +void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
> +{
> +       u32     tx_pin;
> +       u8      rfcsr;
> +

Mind to add a comment here that describes why VCO calibration
is needed and how it is done?

> +       switch (rt2x00dev->chip.rf) {
> +       case RF2020:
> +       case RF3020:
> +       case RF3021:
> +       case RF3022:
> +       case RF3320:
> +       case RF3052:
> +               rt2800_rfcsr_read(rt2x00dev, 7, &rfcsr);
> +               rt2x00_set_field8(&rfcsr, RFCSR7_RF_TUNING, 1);
> +               rt2800_rfcsr_write(rt2x00dev, 7, rfcsr);
> +               break;
> +       case RF5370:
> +       case RF5372:
> +       case RF5390:
> +               rt2800_rfcsr_read(rt2x00dev, 3, &rfcsr);
> +               rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1);
> +               rt2800_rfcsr_write(rt2x00dev, 3, rfcsr);
> +               break;
> +       default:
> +               return;
> +       }
> +
> +       mdelay(1);
> +
> +       rt2800_register_read(rt2x00dev, TX_PIN_CFG, &tx_pin);
> +       if (rt2x00dev->rf_channel <= 14)
> +       {
> +               if (rt2x00dev->default_ant.tx_chain_num == 1)
> +                       tx_pin |= 0x2;

Preferably the 0x2 should be a define (See rt2800.h).

> +               else if (rt2x00dev->default_ant.tx_chain_num == 2)
> +                       tx_pin |= 0xA;

Same here.

> +               else if (rt2x00dev->default_ant.tx_chain_num == 3)
> +                       tx_pin |= 0x0200000A;

Same here.

> +       }
> +       else
> +       {
> +               if (rt2x00dev->default_ant.tx_chain_num == 1)
> +                       tx_pin |= 0x1;

Same here.

> +               else if (rt2x00dev->default_ant.tx_chain_num == 2)
> +                       tx_pin |= 0x5;

Same here.

> +               else if (rt2x00dev->default_ant.tx_chain_num == 3)
> +                       tx_pin |= 0x01000005;

Same here.

> +       }
> +       rt2800_register_write(rt2x00dev, TX_PIN_CFG, tx_pin);
> +
> +}
> +EXPORT_SYMBOL_GPL(rt2800_vco_calibration);
> +
>  static void rt2800_config_retry_limit(struct rt2x00_dev *rt2x00dev,
>                                      struct rt2x00lib_conf *libconf)
>  {
> @@ -2502,7 +2559,8 @@ static u8 rt2800_get_default_vgc(struct rt2x00_dev *rt2x00dev)
>                    rt2x00_rt(rt2x00dev, RT3071) ||
>                    rt2x00_rt(rt2x00dev, RT3090) ||
>                    rt2x00_rt(rt2x00dev, RT3390) ||
> -                   rt2x00_rt(rt2x00dev, RT5390))
> +                   rt2x00_rt(rt2x00dev, RT5390) ||
> +                   rt2x00_rt(rt2x00dev, RT5392))
>                        return 0x1c + (2 * rt2x00dev->lna_gain);
>                else
>                        return 0x2e + rt2x00dev->lna_gain;
> @@ -2637,7 +2695,8 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
>        } else if (rt2x00_rt(rt2x00dev, RT3572)) {
>                rt2800_register_write(rt2x00dev, TX_SW_CFG0, 0x00000400);
>                rt2800_register_write(rt2x00dev, TX_SW_CFG1, 0x00080606);
> -       } else if (rt2x00_rt(rt2x00dev, RT5390)) {
> +       } else if (rt2x00_rt(rt2x00dev, RT5390) ||
> +                          rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_register_write(rt2x00dev, TX_SW_CFG0, 0x00000404);
>                rt2800_register_write(rt2x00dev, TX_SW_CFG1, 0x00080606);
>                rt2800_register_write(rt2x00dev, TX_SW_CFG2, 0x00000000);
> @@ -3013,7 +3072,8 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
>                     rt2800_wait_bbp_ready(rt2x00dev)))
>                return -EACCES;
>
> -       if (rt2x00_rt(rt2x00dev, RT5390)) {
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_bbp_read(rt2x00dev, 4, &value);
>                rt2x00_set_field8(&value, BBP4_MAC_IF_CTRL, 1);
>                rt2800_bbp_write(rt2x00dev, 4, value);
> @@ -3021,19 +3081,22 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
>
>        if (rt2800_is_305x_soc(rt2x00dev) ||
>            rt2x00_rt(rt2x00dev, RT3572) ||
> -           rt2x00_rt(rt2x00dev, RT5390))
> +           rt2x00_rt(rt2x00dev, RT5390) ||
> +           rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 31, 0x08);
>
>        rt2800_bbp_write(rt2x00dev, 65, 0x2c);
>        rt2800_bbp_write(rt2x00dev, 66, 0x38);
>
> -       if (rt2x00_rt(rt2x00dev, RT5390))
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 68, 0x0b);
>
>        if (rt2x00_rt_rev(rt2x00dev, RT2860, REV_RT2860C)) {
>                rt2800_bbp_write(rt2x00dev, 69, 0x16);
>                rt2800_bbp_write(rt2x00dev, 73, 0x12);
> -       } else if (rt2x00_rt(rt2x00dev, RT5390)) {
> +       } else if (rt2x00_rt(rt2x00dev, RT5390) ||
> +                          rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_bbp_write(rt2x00dev, 69, 0x12);
>                rt2800_bbp_write(rt2x00dev, 73, 0x13);
>                rt2800_bbp_write(rt2x00dev, 75, 0x46);
> @@ -3051,7 +3114,8 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
>            rt2x00_rt(rt2x00dev, RT3090) ||
>            rt2x00_rt(rt2x00dev, RT3390) ||
>            rt2x00_rt(rt2x00dev, RT3572) ||
> -           rt2x00_rt(rt2x00dev, RT5390)) {
> +           rt2x00_rt(rt2x00dev, RT5390) ||
> +           rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_bbp_write(rt2x00dev, 79, 0x13);
>                rt2800_bbp_write(rt2x00dev, 80, 0x05);
>                rt2800_bbp_write(rt2x00dev, 81, 0x33);
> @@ -3063,64 +3127,91 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
>        }
>
>        rt2800_bbp_write(rt2x00dev, 82, 0x62);
> -       if (rt2x00_rt(rt2x00dev, RT5390))
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 83, 0x7a);
>        else
>                rt2800_bbp_write(rt2x00dev, 83, 0x6a);
>
>        if (rt2x00_rt_rev(rt2x00dev, RT2860, REV_RT2860D))
>                rt2800_bbp_write(rt2x00dev, 84, 0x19);
> -       else if (rt2x00_rt(rt2x00dev, RT5390))
> +       else if (rt2x00_rt(rt2x00dev, RT5390) ||
> +                        rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 84, 0x9a);
>        else
>                rt2800_bbp_write(rt2x00dev, 84, 0x99);
>
> -       if (rt2x00_rt(rt2x00dev, RT5390))
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 86, 0x38);
>        else
>                rt2800_bbp_write(rt2x00dev, 86, 0x00);
> +
> +       if (rt2x00_rt(rt2x00dev, RT5392))
> +               rt2800_bbp_write(rt2x00dev, 88, 0x90);
>
>        rt2800_bbp_write(rt2x00dev, 91, 0x04);
>
> -       if (rt2x00_rt(rt2x00dev, RT5390))
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5390))
>                rt2800_bbp_write(rt2x00dev, 92, 0x02);
>        else
>                rt2800_bbp_write(rt2x00dev, 92, 0x00);
>
> +       if (rt2x00_rt(rt2x00dev, RT5392))
> +       {
> +               rt2800_bbp_write(rt2x00dev, 95, 0x9a);
> +               rt2800_bbp_write(rt2x00dev, 98, 0x12);
> +       }
> +
>        if (rt2x00_rt_rev_gte(rt2x00dev, RT3070, REV_RT3070F) ||
>            rt2x00_rt_rev_gte(rt2x00dev, RT3071, REV_RT3071E) ||
>            rt2x00_rt_rev_gte(rt2x00dev, RT3090, REV_RT3090E) ||
>            rt2x00_rt_rev_gte(rt2x00dev, RT3390, REV_RT3390E) ||
>            rt2x00_rt(rt2x00dev, RT3572) ||
>            rt2x00_rt(rt2x00dev, RT5390) ||
> +           rt2x00_rt(rt2x00dev, RT5392) ||
>            rt2800_is_305x_soc(rt2x00dev))
>                rt2800_bbp_write(rt2x00dev, 103, 0xc0);
>        else
>                rt2800_bbp_write(rt2x00dev, 103, 0x00);
>
> -       if (rt2x00_rt(rt2x00dev, RT5390))
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 104, 0x92);
>
>        if (rt2800_is_305x_soc(rt2x00dev))
>                rt2800_bbp_write(rt2x00dev, 105, 0x01);
> -       else if (rt2x00_rt(rt2x00dev, RT5390))
> +       else if (rt2x00_rt(rt2x00dev, RT5390) ||
> +                        rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 105, 0x3c);
>        else
>                rt2800_bbp_write(rt2x00dev, 105, 0x05);
>
>        if (rt2x00_rt(rt2x00dev, RT5390))
>                rt2800_bbp_write(rt2x00dev, 106, 0x03);
> +       else if (rt2x00_rt(rt2x00dev, RT5392))
> +               rt2800_bbp_write(rt2x00dev, 106, 0x12);
>        else
>                rt2800_bbp_write(rt2x00dev, 106, 0x35);
>
> -       if (rt2x00_rt(rt2x00dev, RT5390))
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392))
>                rt2800_bbp_write(rt2x00dev, 128, 0x12);
>
> +       if (rt2x00_rt(rt2x00dev, RT5392))
> +       {
> +               rt2800_bbp_write(rt2x00dev, 134, 0xd0);
> +               rt2800_bbp_write(rt2x00dev, 135, 0xf6);
> +       }
> +
>        if (rt2x00_rt(rt2x00dev, RT3071) ||
>            rt2x00_rt(rt2x00dev, RT3090) ||
>            rt2x00_rt(rt2x00dev, RT3390) ||
>            rt2x00_rt(rt2x00dev, RT3572) ||
> -           rt2x00_rt(rt2x00dev, RT5390)) {
> +           rt2x00_rt(rt2x00dev, RT5390) ||
> +           rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_bbp_read(rt2x00dev, 138, &value);
>
>                rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF0, &eeprom);
> @@ -3132,7 +3223,8 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
>                rt2800_bbp_write(rt2x00dev, 138, value);
>        }
>
> -       if (rt2x00_rt(rt2x00dev, RT5390)) {
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392)) {
>                int ant, div_mode;
>
>                rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1, &eeprom);
> @@ -3258,13 +3350,15 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
>            !rt2x00_rt(rt2x00dev, RT3390) &&
>            !rt2x00_rt(rt2x00dev, RT3572) &&
>            !rt2x00_rt(rt2x00dev, RT5390) &&
> +           !rt2x00_rt(rt2x00dev, RT5392) &&
>            !rt2800_is_305x_soc(rt2x00dev))
>                return 0;
>
>        /*
>         * Init RF calibration.
>         */
> -       if (rt2x00_rt(rt2x00dev, RT5390)) {
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_rfcsr_read(rt2x00dev, 2, &rfcsr);
>                rt2x00_set_field8(&rfcsr, RFCSR2_RESCAL_EN, 1);
>                rt2800_rfcsr_write(rt2x00dev, 2, rfcsr);
> @@ -3482,7 +3576,68 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
>                        rt2800_rfcsr_write(rt2x00dev, 61, 0xdd);
>                rt2800_rfcsr_write(rt2x00dev, 62, 0x00);
>                rt2800_rfcsr_write(rt2x00dev, 63, 0x00);
> -       }
> +       }       else if (rt2x00_rt(rt2x00dev, RT5392) ||
> +                       rt2x00_rt(rt2x00dev, RT5372)) {
> +                       rt2800_rfcsr_write(rt2x00dev, 1, 0x17);
> +                       rt2800_rfcsr_write(rt2x00dev, 2, 0x80);
> +                       rt2800_rfcsr_write(rt2x00dev, 3, 0x88);
> +                       rt2800_rfcsr_write(rt2x00dev, 5, 0x10);
> +                       rt2800_rfcsr_write(rt2x00dev, 6, 0xe0);
> +                       rt2800_rfcsr_write(rt2x00dev, 7, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 10, 0x53);
> +                       rt2800_rfcsr_write(rt2x00dev, 11, 0x4a);
> +                       rt2800_rfcsr_write(rt2x00dev, 12, 0x46);
> +                       rt2800_rfcsr_write(rt2x00dev, 13, 0x9f);
> +                       rt2800_rfcsr_write(rt2x00dev, 14, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 15, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 16, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 18, 0x03);
> +                       rt2800_rfcsr_write(rt2x00dev, 19, 0x4d);
> +                       rt2800_rfcsr_write(rt2x00dev, 20, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 21, 0x8d);
> +                       rt2800_rfcsr_write(rt2x00dev, 22, 0x20);
> +                       rt2800_rfcsr_write(rt2x00dev, 23, 0x0b);
> +                       rt2800_rfcsr_write(rt2x00dev, 24, 0x44);
> +                       rt2800_rfcsr_write(rt2x00dev, 25, 0x80);
> +                       rt2800_rfcsr_write(rt2x00dev, 26, 0x82);
> +                       rt2800_rfcsr_write(rt2x00dev, 27, 0x09);
> +                       rt2800_rfcsr_write(rt2x00dev, 28, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 29, 0x10);
> +                       rt2800_rfcsr_write(rt2x00dev, 30, 0x10);
> +                       rt2800_rfcsr_write(rt2x00dev, 31, 0x80);
> +                       rt2800_rfcsr_write(rt2x00dev, 32, 0x20);
> +                       rt2800_rfcsr_write(rt2x00dev, 33, 0xC0);
> +                       rt2800_rfcsr_write(rt2x00dev, 34, 0x07);
> +                       rt2800_rfcsr_write(rt2x00dev, 35, 0x12);
> +                       rt2800_rfcsr_write(rt2x00dev, 36, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 37, 0x08);
> +                       rt2800_rfcsr_write(rt2x00dev, 38, 0x89);
> +                       rt2800_rfcsr_write(rt2x00dev, 39, 0x1b);
> +                       rt2800_rfcsr_write(rt2x00dev, 40, 0x0f);
> +                       rt2800_rfcsr_write(rt2x00dev, 41, 0xbb);
> +                       rt2800_rfcsr_write(rt2x00dev, 42, 0xd5);
> +                       rt2800_rfcsr_write(rt2x00dev, 43, 0x9b);
> +                       rt2800_rfcsr_write(rt2x00dev, 44, 0x0e);
> +                       rt2800_rfcsr_write(rt2x00dev, 45, 0xa2);
> +                       rt2800_rfcsr_write(rt2x00dev, 46, 0x73);
> +                       rt2800_rfcsr_write(rt2x00dev, 47, 0x0c);
> +                       rt2800_rfcsr_write(rt2x00dev, 48, 0x10);
> +                       rt2800_rfcsr_write(rt2x00dev, 49, 0x94);
> +                       rt2800_rfcsr_write(rt2x00dev, 50, 0x94);
> +                       rt2800_rfcsr_write(rt2x00dev, 51, 0x3a);
> +                       rt2800_rfcsr_write(rt2x00dev, 52, 0x48);
> +                       rt2800_rfcsr_write(rt2x00dev, 53, 0x44);
> +                       rt2800_rfcsr_write(rt2x00dev, 54, 0x38);
> +                       rt2800_rfcsr_write(rt2x00dev, 55, 0x43);
> +                       rt2800_rfcsr_write(rt2x00dev, 56, 0xa1);
> +                       rt2800_rfcsr_write(rt2x00dev, 57, 0x00);
> +                       rt2800_rfcsr_write(rt2x00dev, 58, 0x39);
> +                       rt2800_rfcsr_write(rt2x00dev, 59, 0x07);
> +                       rt2800_rfcsr_write(rt2x00dev, 60, 0x45);
> +                       rt2800_rfcsr_write(rt2x00dev, 61, 0x91);
> +                       rt2800_rfcsr_write(rt2x00dev, 62, 0x39);
> +                       rt2800_rfcsr_write(rt2x00dev, 63, 0x07);
> +               }
>
>        if (rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070F)) {
>                rt2800_register_read(rt2x00dev, LDO_CFG0, &reg);
> @@ -3549,7 +3704,8 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
>                        rt2800_init_rx_filter(rt2x00dev, true, 0x27, 0x15);
>        }
>
> -       if (!rt2x00_rt(rt2x00dev, RT5390)) {
> +       if (!rt2x00_rt(rt2x00dev, RT5390) ||
> +               !rt2x00_rt(rt2x00dev, RT5392)) {
>                /*
>                 * Set back to initial state
>                 */
> @@ -3577,7 +3733,8 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
>        rt2x00_set_field32(&reg, OPT_14_CSR_BIT0, 1);
>        rt2800_register_write(rt2x00dev, OPT_14_CSR, reg);
>
> -       if (!rt2x00_rt(rt2x00dev, RT5390)) {
> +       if (!rt2x00_rt(rt2x00dev, RT5390) ||
> +               !rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_rfcsr_read(rt2x00dev, 17, &rfcsr);
>                rt2x00_set_field8(&rfcsr, RFCSR17_TX_LO1_EN, 0);
>                if (rt2x00_rt(rt2x00dev, RT3070) ||
> @@ -3645,7 +3802,8 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
>                rt2800_rfcsr_write(rt2x00dev, 27, rfcsr);
>        }
>
> -       if (rt2x00_rt(rt2x00dev, RT5390)) {
> +       if (rt2x00_rt(rt2x00dev, RT5390) ||
> +               rt2x00_rt(rt2x00dev, RT5392)) {
>                rt2800_rfcsr_read(rt2x00dev, 38, &rfcsr);
>                rt2x00_set_field8(&rfcsr, RFCSR38_RX_LO1_EN, 0);
>                rt2800_rfcsr_write(rt2x00dev, 38, rfcsr);
> @@ -3929,7 +4087,8 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
>         * RT53xx: defined in "EEPROM_CHIP_ID" field
>         */
>        rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
> -       if (rt2x00_get_field32(reg, MAC_CSR0_CHIPSET) == RT5390)
> +       if (rt2x00_get_field32(reg, MAC_CSR0_CHIPSET) == RT5390 ||
> +               rt2x00_get_field32(reg, MAC_CSR0_CHIPSET) == RT5392)
>                rt2x00_eeprom_read(rt2x00dev, EEPROM_CHIP_ID, &value);
>        else
>                value = rt2x00_get_field16(eeprom, EEPROM_NIC_CONF0_RF_TYPE);
> @@ -3947,9 +4106,11 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
>        case RT3390:
>        case RT3572:
>        case RT5390:
> +       case RT5392:
> +       case RT5372:
>                break;
>        default:
> -               ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
> +               ERROR(rt2x00dev, "Invalid RT chipset 0x%04x detected.\n", rt2x00dev->chip.rt);
>                return -ENODEV;
>        }
>

This hunk can also be a patch on its own.

> @@ -3966,9 +4127,10 @@ int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
>        case RF3320:
>        case RF5370:
>        case RF5390:
> +       case RF5372:
>                break;
>        default:
> -               ERROR(rt2x00dev, "Invalid RF chipset 0x%x detected.\n",
> +               ERROR(rt2x00dev, "Invalid RF chipset 0x%04x detected.\n",
>                      rt2x00dev->chip.rf);
>                return -ENODEV;
>        }

Same here.

> @@ -4271,6 +4433,7 @@ int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
>                   rt2x00_rf(rt2x00dev, RF3022) ||
>                   rt2x00_rf(rt2x00dev, RF3320) ||
>                   rt2x00_rf(rt2x00dev, RF5370) ||
> +                  rt2x00_rf(rt2x00dev, RF5372) ||
>                   rt2x00_rf(rt2x00dev, RF5390)) {
>                spec->num_channels = 14;
>                spec->channels = rf_vals_3x;
> diff --git a/drivers/net/wireless/rt2x00/rt2800lib.h b/drivers/net/wireless/rt2x00/rt2800lib.h
> index 8c3c281..419e36c 100644
> --- a/drivers/net/wireless/rt2x00/rt2800lib.h
> +++ b/drivers/net/wireless/rt2x00/rt2800lib.h
> @@ -184,6 +184,7 @@ void rt2800_reset_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual);
>  void rt2800_link_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual,
>                       const u32 count);
>  void rt2800_gain_calibration(struct rt2x00_dev *rt2x00dev);
> +void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev);
>
>  int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev);
>  void rt2800_disable_radio(struct rt2x00_dev *rt2x00dev);
> diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
> index 837b460..2a3fec6 100644
> --- a/drivers/net/wireless/rt2x00/rt2800pci.c
> +++ b/drivers/net/wireless/rt2x00/rt2800pci.c
> @@ -480,6 +480,7 @@ static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
>
>        if (rt2x00_is_pcie(rt2x00dev) &&
>            (rt2x00_rt(rt2x00dev, RT3572) ||
> +            rt2x00_rt(rt2x00dev, RT5390) ||
>             rt2x00_rt(rt2x00dev, RT5390))) {
>                rt2x00pci_register_read(rt2x00dev, AUX_CTRL, &reg);
>                rt2x00_set_field32(&reg, AUX_CTRL_FORCE_PCIE_CLK, 1);
> @@ -1050,6 +1051,7 @@ static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
>        .reset_tuner            = rt2800_reset_tuner,
>        .link_tuner             = rt2800_link_tuner,
>        .gain_calibration       = rt2800_gain_calibration,
> +       .vco_calibration        = rt2800_vco_calibration,
>        .start_queue            = rt2800pci_start_queue,
>        .kick_queue             = rt2800pci_kick_queue,
>        .stop_queue             = rt2800pci_stop_queue,
> diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
> index 7f21005..f6f1724 100644
> --- a/drivers/net/wireless/rt2x00/rt2800usb.c
> +++ b/drivers/net/wireless/rt2x00/rt2800usb.c
> @@ -783,6 +783,7 @@ static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
>        .reset_tuner            = rt2800_reset_tuner,
>        .link_tuner             = rt2800_link_tuner,
>        .gain_calibration       = rt2800_gain_calibration,
> +       .vco_calibration        = rt2800_vco_calibration,
>        .watchdog               = rt2800usb_watchdog,
>        .start_queue            = rt2800usb_start_queue,
>        .kick_queue             = rt2x00usb_kick_queue,
> @@ -1107,6 +1108,20 @@ static struct usb_device_id rt2800usb_device_table[] = {
>        /* Ralink */
>        { USB_DEVICE(0x148f, 0x5370) },
>        { USB_DEVICE(0x148f, 0x5372) },
> +       /* Alpha */
> +       { USB_DEVICE(0x2001, 0x3c15) },
> +       { USB_DEVICE(0x2001, 0x3c19) },
> +       /* Arcadyan */
> +       { USB_DEVICE(0x043e, 0x7a12) },
> +       /* LG innotek */
> +       { USB_DEVICE(0x043e, 0x7a22) },
> +       /* Panasonic */
> +       { USB_DEVICE(0x04da, 0x1801) },
> +       { USB_DEVICE(0x04da, 0x1800) },
> +       /* Unknown */
> +       { USB_DEVICE(0x04da, 0x23f6) },
> +       /* Philips */
> +       { USB_DEVICE(0x0471, 0x2104) },
>  #endif
>  #ifdef CONFIG_RT2800USB_UNKNOWN
>        /*
> diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
> index b03b22c..38b2090 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00.h
> +++ b/drivers/net/wireless/rt2x00/rt2x00.h
> @@ -192,6 +192,8 @@ struct rt2x00_chip {
>  #define RT3593         0x3593
>  #define RT3883         0x3883  /* WSOC */
>  #define RT5390         0x5390  /* 2.4GHz */
> +#define RT5392         0x5392  /* 2.4GHz */
> +#define RT5372         0x5372  /* 2.4GHz */
>
>        u16 rf;
>        u16 rev;
> @@ -355,6 +357,11 @@ struct link {
>         * Work structure for scheduling periodic AGC adjustments.
>         */
>        struct delayed_work agc_work;
> +
> +       /*
> +        * Work structure for scheduling periodic VCO recalibration.
> +        */
> +       struct delayed_work vco_work;
>  };
>
>  enum rt2x00_delayed_flags {
> @@ -579,6 +586,7 @@ struct rt2x00lib_ops {
>        void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
>                            struct link_qual *qual, const u32 count);
>        void (*gain_calibration) (struct rt2x00_dev *rt2x00dev);
> +       void (*vco_calibration) (struct rt2x00_dev *rt2x00dev);
>
>        /*
>         * Data queue handlers.
> @@ -979,6 +987,11 @@ struct rt2x00_dev {
>        struct tasklet_struct autowake_tasklet;
>
>        /*
> +        * Used for VCO recalibration.
> +        */
> +       int rf_channel;
> +
> +       /*
>         * Protect the interrupt mask register.
>         */
>        spinlock_t irqmask_lock;
> diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
> index b704e5b..f64b55a 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00config.c
> +++ b/drivers/net/wireless/rt2x00/rt2x00config.c
> @@ -232,6 +232,9 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
>                memcpy(&libconf.channel,
>                       &rt2x00dev->spec.channels_info[hw_value],
>                       sizeof(libconf.channel));
> +
> +               /* Used for VCO recalibration */
> +               rt2x00dev->rf_channel = libconf.rf.channel;
>        }
>
>        if (test_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags) &&
> diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
> index c3e1aa7..f78266e 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00dev.c
> +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
> @@ -88,6 +88,7 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
>        rt2x00queue_start_queues(rt2x00dev);
>        rt2x00link_start_tuner(rt2x00dev);
>        rt2x00link_start_agc(rt2x00dev);
> +       rt2x00link_start_vcocal(rt2x00dev);
>
>        /*
>         * Start watchdog monitoring.
> @@ -111,6 +112,7 @@ void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
>         * Stop all queues
>         */
>        rt2x00link_stop_agc(rt2x00dev);
> +       rt2x00link_stop_vcocal(rt2x00dev);
>        rt2x00link_stop_tuner(rt2x00dev);
>        rt2x00queue_stop_queues(rt2x00dev);
>        rt2x00queue_flush_queues(rt2x00dev, true);
> diff --git a/drivers/net/wireless/rt2x00/rt2x00lib.h b/drivers/net/wireless/rt2x00/rt2x00lib.h
> index 4cdf247..78bd43b 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00lib.h
> +++ b/drivers/net/wireless/rt2x00/rt2x00lib.h
> @@ -33,6 +33,7 @@
>  #define WATCHDOG_INTERVAL      round_jiffies_relative(HZ)
>  #define LINK_TUNE_INTERVAL     round_jiffies_relative(HZ)
>  #define AGC_INTERVAL           round_jiffies_relative(4 * HZ)
> +#define VCO_INTERVAL           round_jiffies_relative(10 * HZ) /* 10 sec */
>
>  /*
>  * rt2x00_rate: Per rate device information
> @@ -278,12 +279,24 @@ void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev);
>  void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev);
>
>  /**
> + * rt2x00link_start_vcocal - Start periodic VCO calibration
> + * @rt2x00dev: Pointer to &struct rt2x00_dev.
> + */
> +void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev);
> +
> +/**
>  * rt2x00link_stop_agc - Stop periodic gain calibration
>  * @rt2x00dev: Pointer to &struct rt2x00_dev.
>  */
>  void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev);
>
>  /**
> + * rt2x00link_stop_vcocal - Stop periodic VCO calibration
> + * @rt2x00dev: Pointer to &struct rt2x00_dev.
> + */
> +void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev);
> +
> +/**
>  * rt2x00link_register - Initialize link tuning & watchdog functionality
>  * @rt2x00dev: Pointer to &struct rt2x00_dev.
>  *
> diff --git a/drivers/net/wireless/rt2x00/rt2x00link.c b/drivers/net/wireless/rt2x00/rt2x00link.c
> index ea10b00..f6f4267 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00link.c
> +++ b/drivers/net/wireless/rt2x00/rt2x00link.c
> @@ -447,11 +447,27 @@ void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev)
>                                             AGC_INTERVAL);
>  }
>
> +void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev)
> +{
> +       struct link *link = &rt2x00dev->link;
> +
> +       if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
> +           rt2x00dev->ops->lib->vco_calibration)
> +               ieee80211_queue_delayed_work(rt2x00dev->hw,
> +                                            &link->vco_work,
> +                                            VCO_INTERVAL);
> +}
> +
>  void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev)
>  {
>        cancel_delayed_work_sync(&rt2x00dev->link.agc_work);
>  }
>
> +void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev)
> +{
> +       cancel_delayed_work_sync(&rt2x00dev->link.vco_work);
> +}
> +
>  static void rt2x00link_agc(struct work_struct *work)
>  {
>        struct rt2x00_dev *rt2x00dev =
> @@ -473,9 +489,31 @@ static void rt2x00link_agc(struct work_struct *work)
>                                             AGC_INTERVAL);
>  }
>
> +static void rt2x00link_vcocal(struct work_struct *work)
> +{
> +       struct rt2x00_dev *rt2x00dev =
> +           container_of(work, struct rt2x00_dev, link.vco_work.work);
> +       struct link *link = &rt2x00dev->link;
> +
> +       /*
> +        * When the radio is shutting down we should
> +        * immediately cease the watchdog monitoring.
> +        */

The comment talkes about "watchdog monitoring" but it should be
about VCO calibration ...

> +       if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
> +               return;
> +
> +       rt2x00dev->ops->lib->vco_calibration(rt2x00dev);
> +
> +       if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
> +               ieee80211_queue_delayed_work(rt2x00dev->hw,
> +                                            &link->vco_work,
> +                                            VCO_INTERVAL);
> +}
> +
>  void rt2x00link_register(struct rt2x00_dev *rt2x00dev)
>  {
>        INIT_DELAYED_WORK(&rt2x00dev->link.agc_work, rt2x00link_agc);
> +       INIT_DELAYED_WORK(&rt2x00dev->link.vco_work, rt2x00link_vcocal);
>        INIT_DELAYED_WORK(&rt2x00dev->link.watchdog_work, rt2x00link_watchdog);
>        INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00link_tuner);
>  }
> --
> 1.7.5.1
>
> --
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Nevertheless, nice to see some code!

Thanks,
Helmut
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