iwlwifi: Distinguish power amplifier for 6000 series

For 6x00 2x2 NIC, two types of Power Amplifier are available.
In order for uCode to apply correct tx power,
driver needs to program the CSR_GP_DRIVER_REG register and
let uCode know the type of PA.
If driver do not program CSR_GP_DRIVER_REG register (default to 0),
then it is uCode's decision for tx power

2x2 Hybrid card: use both internal and external PA
2x2 IPA(Internal Power Amplifier) card: internal PA only

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-1000.c

@@ -73,6 +73,18 @@ static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
 	priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
 }
 
+/* NIC configuration for 1000 series */
+static void iwl1000_nic_config(struct iwl_priv *priv)
+{
+	iwl5000_nic_config(priv);
+
+	/* Setting digital SVR for 1000 card to 1.32V */
+	/* locking is acquired in iwl_set_bits_mask_prph() function */
+	iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
+				APMG_SVR_DIGITAL_VOLTAGE_1_32,
+				~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
+}
+
 static struct iwl_lib_ops iwl1000_lib = {
 	.set_hw_params = iwl5000_hw_set_hw_params,
 	.txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
@@ -95,7 +107,7 @@ static struct iwl_lib_ops iwl1000_lib = {
 		.init =	iwl5000_apm_init,
 		.reset = iwl5000_apm_reset,
 		.stop = iwl5000_apm_stop,
-		.config = iwl5000_nic_config,
+		.config = iwl1000_nic_config,
 		.set_pwr_src = iwl_set_pwr_src,
 	},
 	.eeprom_ops = {

drivers/net/wireless/iwlwifi/iwl-5000.c

@@ -198,6 +198,7 @@ out:
 }
 
 
+/* NIC configuration for 5000 series and up */
 void iwl5000_nic_config(struct iwl_priv *priv)
 {
 	unsigned long flags;
@@ -239,18 +240,11 @@ void iwl5000_nic_config(struct iwl_priv *priv)
 				APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 				~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 
-	if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_1000) {
-		/* Setting digital SVR for 1000 card to 1.32V */
-		iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
-					APMG_SVR_DIGITAL_VOLTAGE_1_32,
-					~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
-	}
 
 	spin_unlock_irqrestore(&priv->lock, flags);
 }
 
 
-
 /*
  * EEPROM
  */

drivers/net/wireless/iwlwifi/iwl-6000.c

@@ -68,6 +68,24 @@ static void iwl6000_set_ct_threshold(struct iwl_priv *priv)
 	priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
 }
 
+/* NIC configuration for 6000 series */
+static void iwl6000_nic_config(struct iwl_priv *priv)
+{
+	iwl5000_nic_config(priv);
+
+	/* no locking required for register write */
+	if (priv->cfg->pa_type == IWL_PA_HYBRID) {
+		/* 2x2 hybrid phy type */
+		iwl_write32(priv, CSR_GP_DRIVER_REG,
+			     CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_HYB);
+	} else if (priv->cfg->pa_type == IWL_PA_INTERNAL) {
+		/* 2x2 IPA phy type */
+		iwl_write32(priv, CSR_GP_DRIVER_REG,
+			     CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_IPA);
+	}
+	/* else do nothing, uCode configured */
+}
+
 static struct iwl_lib_ops iwl6000_lib = {
 	.set_hw_params = iwl5000_hw_set_hw_params,
 	.txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
@@ -90,7 +108,7 @@ static struct iwl_lib_ops iwl6000_lib = {
 		.init =	iwl5000_apm_init,
 		.reset = iwl5000_apm_reset,
 		.stop = iwl5000_apm_stop,
-		.config = iwl5000_nic_config,
+		.config = iwl6000_nic_config,
 		.set_pwr_src = iwl_set_pwr_src,
 	},
 	.eeprom_ops = {
@@ -146,9 +164,13 @@ struct iwl_cfg iwl6000_2ag_cfg = {
 	.valid_tx_ant = ANT_BC,
 	.valid_rx_ant = ANT_BC,
 	.need_pll_cfg = false,
+	.pa_type = IWL_PA_SYSTEM,
 };
 
-struct iwl_cfg iwl6000_2agn_cfg = {
+/*
+ * "h": Hybrid configuration, use both internal and external Power Amplifier
+ */
+struct iwl_cfg iwl6000h_2agn_cfg = {
 	.name = "6000 Series 2x2 AGN",
 	.fw_name_pre = IWL6000_FW_PRE,
 	.ucode_api_max = IWL6000_UCODE_API_MAX,
@@ -162,6 +184,27 @@ struct iwl_cfg iwl6000_2agn_cfg = {
 	.valid_tx_ant = ANT_AB,
 	.valid_rx_ant = ANT_AB,
 	.need_pll_cfg = false,
+	.pa_type = IWL_PA_HYBRID,
+};
+
+/*
+ * "i": Internal configuration, use internal Power Amplifier
+ */
+struct iwl_cfg iwl6000i_2agn_cfg = {
+	.name = "6000 Series 2x2 AGN",
+	.fw_name_pre = IWL6000_FW_PRE,
+	.ucode_api_max = IWL6000_UCODE_API_MAX,
+	.ucode_api_min = IWL6000_UCODE_API_MIN,
+	.sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
+	.ops = &iwl6000_ops,
+	.eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
+	.eeprom_ver = EEPROM_5000_EEPROM_VERSION,
+	.eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
+	.mod_params = &iwl50_mod_params,
+	.valid_tx_ant = ANT_BC,
+	.valid_rx_ant = ANT_BC,
+	.need_pll_cfg = false,
+	.pa_type = IWL_PA_INTERNAL,
 };
 
 struct iwl_cfg iwl6050_2agn_cfg = {
@@ -178,6 +221,7 @@ struct iwl_cfg iwl6050_2agn_cfg = {
 	.valid_tx_ant = ANT_AB,
 	.valid_rx_ant = ANT_AB,
 	.need_pll_cfg = false,
+	.pa_type = IWL_PA_SYSTEM,
 };
 
 struct iwl_cfg iwl6000_3agn_cfg = {
@@ -194,6 +238,7 @@ struct iwl_cfg iwl6000_3agn_cfg = {
 	.valid_tx_ant = ANT_ABC,
 	.valid_rx_ant = ANT_ABC,
 	.need_pll_cfg = false,
+	.pa_type = IWL_PA_SYSTEM,
 };
 
 struct iwl_cfg iwl6050_3agn_cfg = {
@@ -210,6 +255,7 @@ struct iwl_cfg iwl6050_3agn_cfg = {
 	.valid_tx_ant = ANT_ABC,
 	.valid_rx_ant = ANT_ABC,
 	.need_pll_cfg = false,
+	.pa_type = IWL_PA_SYSTEM,
 };
 
 MODULE_FIRMWARE(IWL6000_MODULE_FIRMWARE(IWL6000_UCODE_API_MAX));

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -3142,11 +3142,13 @@ static struct pci_device_id iwl_hw_card_ids[] = {
 	{IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
 	{IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
 	{IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
+	{IWL_PCI_DEVICE(0x008D, PCI_ANY_ID, iwl6000h_2agn_cfg)},
+	{IWL_PCI_DEVICE(0x008E, PCI_ANY_ID, iwl6000h_2agn_cfg)},
 	{IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
-	{IWL_PCI_DEVICE(0x422C, PCI_ANY_ID, iwl6000_2agn_cfg)},
+	{IWL_PCI_DEVICE(0x422C, PCI_ANY_ID, iwl6000i_2agn_cfg)},
 	{IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
-	{IWL_PCI_DEVICE(0x4239, PCI_ANY_ID, iwl6000_2agn_cfg)},
-	{IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
+	{IWL_PCI_DEVICE(0x4239, PCI_ANY_ID, iwl6000i_2agn_cfg)},
+	{IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000h_2agn_cfg)},
 	{IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
 	{IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
 	{IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -206,6 +206,7 @@ struct iwl_mod_params {
  * 	filename is constructed as fw_name_pre<api>.ucode.
  * @ucode_api_max: Highest version of uCode API supported by driver.
  * @ucode_api_min: Lowest version of uCode API supported by driver.
+ * @pa_type: used by 6000 series only to identify the type of Power Amplifier
  *
  * We enable the driver to be backward compatible wrt API version. The
  * driver specifies which APIs it supports (with @ucode_api_max being the
@@ -226,6 +227,7 @@ struct iwl_mod_params {
  * iwl_hcmd_utils_ops etc. we accommodate different command structures
  * and flows between hardware versions (4965/5000) as well as their API
  * versions.
+ *
  */
 struct iwl_cfg {
 	const char *name;
@@ -242,6 +244,7 @@ struct iwl_cfg {
 	u8   valid_rx_ant;
 	bool need_pll_cfg;
 	bool use_isr_legacy;
+	enum iwl_pa_type pa_type;
 };
 
 /***************************

drivers/net/wireless/iwlwifi/iwl-csr.h

@@ -91,7 +91,8 @@
 #define CSR_EEPROM_GP           (CSR_BASE+0x030)
 #define CSR_OTP_GP_REG   	(CSR_BASE+0x034)
 #define CSR_GIO_REG		(CSR_BASE+0x03C)
-#define CSR_GP_UCODE		(CSR_BASE+0x044)
+#define CSR_GP_UCODE_REG	(CSR_BASE+0x048)
+#define CSR_GP_DRIVER_REG	(CSR_BASE+0x050)
 #define CSR_UCODE_DRV_GP1       (CSR_BASE+0x054)
 #define CSR_UCODE_DRV_GP1_SET   (CSR_BASE+0x058)
 #define CSR_UCODE_DRV_GP1_CLR   (CSR_BASE+0x05c)
@@ -245,6 +246,13 @@
 #define CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED           (0x00000004)
 #define CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT      (0x00000008)
 
+/* GP Driver */
+#define CSR_GP_DRIVER_REG_BIT_RADIO_SKU_MSK	    (0x00000003)
+#define CSR_GP_DRIVER_REG_BIT_RADIO_SKU_3x3_HYB	    (0x00000000)
+#define CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_HYB	    (0x00000001)
+#define CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_IPA	    (0x00000002)
+
+
 /* GI Chicken Bits */
 #define CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX  (0x00800000)
 #define CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER  (0x20000000)

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -57,7 +57,8 @@ extern struct iwl_cfg iwl5100_bg_cfg;
 extern struct iwl_cfg iwl5100_abg_cfg;
 extern struct iwl_cfg iwl5150_agn_cfg;
 extern struct iwl_cfg iwl6000_2ag_cfg;
-extern struct iwl_cfg iwl6000_2agn_cfg;
+extern struct iwl_cfg iwl6000h_2agn_cfg;
+extern struct iwl_cfg iwl6000i_2agn_cfg;
 extern struct iwl_cfg iwl6000_3agn_cfg;
 extern struct iwl_cfg iwl6050_2agn_cfg;
 extern struct iwl_cfg iwl6050_3agn_cfg;
@@ -888,6 +889,19 @@ enum iwl_nvm_type {
 	NVM_DEVICE_TYPE_OTP,
 };
 
+
+/**
+ * enum iwl_pa_type - Power Amplifier type
+ * @IWL_PA_SYSTEM:  based on uCode configuration
+ * @IWL_PA_HYBRID: use both Internal and external PA
+ * @IWL_PA_INTERNAL: use Internal only
+ */
+enum iwl_pa_type {
+	IWL_PA_SYSTEM = 0,
+	IWL_PA_HYBRID = 1,
+	IWL_PA_INTERNAL = 2,
+};
+
 /* interrupt statistics */
 struct isr_statistics {
 	u32 hw;