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| author | Gabor Juhos <juhosg@openwrt.org> | 2014-01-10 09:37:57 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2014-01-10 09:37:57 +0000 |
| commit | fee259994be6ffd66c4f40a4545ef262e3289831 (patch) | |
| tree | 91aabbf1ca7e57b92f4bcf56da417642fb448b38 | |
| parent | 14311df9f8456f17a8bb9c3035a121c6da5054f6 (diff) | |
| download | master-187ad058-fee259994be6ffd66c4f40a4545ef262e3289831.tar.gz master-187ad058-fee259994be6ffd66c4f40a4545ef262e3289831.tar.bz2 master-187ad058-fee259994be6ffd66c4f40a4545ef262e3289831.zip | |
ar71xx: add a helper function for external LNA GPIO setup
The built-in wireless MAC of the AR934x SoC can handle
external LNAs and the control signal of the LNAs can be
routed to any GPIO line. Add a helper function which
can be used to configure the GPIO lines.
The helper function will be used for AR934x boards
which are using externel LNAs to improve sensitivity.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39215 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | target/linux/ar71xx/patches-3.10/601-MIPS-ath79-add-more-register-defines.patch | 4 | ||||
| -rw-r--r-- | target/linux/ar71xx/patches-3.10/613-MIPS-ath79-add-ath79_wmac_setup_ext_lna_gpio-helper.patch | 76 |
2 files changed, 79 insertions, 1 deletions
diff --git a/target/linux/ar71xx/patches-3.10/601-MIPS-ath79-add-more-register-defines.patch b/target/linux/ar71xx/patches-3.10/601-MIPS-ath79-add-more-register-defines.patch index 4812a624f2..81a997b85e 100644 --- a/target/linux/ar71xx/patches-3.10/601-MIPS-ath79-add-more-register-defines.patch +++ b/target/linux/ar71xx/patches-3.10/601-MIPS-ath79-add-more-register-defines.patch @@ -207,7 +207,7 @@ #define AR934X_GPIO_REG_FUNC 0x6c #define AR71XX_GPIO_COUNT 16 -@@ -561,4 +664,146 @@ +@@ -561,4 +664,148 @@ #define AR934X_SRIF_DPLL2_OUTDIV_SHIFT 13 #define AR934X_SRIF_DPLL2_OUTDIV_MASK 0x7 @@ -284,6 +284,8 @@ +#define AR934X_GPIO_OUT_LED_LINK2 43 +#define AR934X_GPIO_OUT_LED_LINK3 44 +#define AR934X_GPIO_OUT_LED_LINK4 45 ++#define AR934X_GPIO_OUT_EXT_LNA0 46 ++#define AR934X_GPIO_OUT_EXT_LNA1 47 + +/* + * MII_CTRL block diff --git a/target/linux/ar71xx/patches-3.10/613-MIPS-ath79-add-ath79_wmac_setup_ext_lna_gpio-helper.patch b/target/linux/ar71xx/patches-3.10/613-MIPS-ath79-add-ath79_wmac_setup_ext_lna_gpio-helper.patch new file mode 100644 index 0000000000..83de7b120a --- /dev/null +++ b/target/linux/ar71xx/patches-3.10/613-MIPS-ath79-add-ath79_wmac_setup_ext_lna_gpio-helper.patch @@ -0,0 +1,76 @@ +--- a/arch/mips/ath79/dev-wmac.c ++++ b/arch/mips/ath79/dev-wmac.c +@@ -18,9 +18,11 @@ + #include <linux/etherdevice.h> + #include <linux/platform_device.h> + #include <linux/ath9k_platform.h> ++#include <linux/gpio.h> + + #include <asm/mach-ath79/ath79.h> + #include <asm/mach-ath79/ar71xx_regs.h> ++#include "common.h" + #include "dev-wmac.h" + + static u8 ath79_wmac_mac[ETH_ALEN]; +@@ -311,6 +313,51 @@ void __init ath79_wmac_set_tx_gain_buffa + ath79_wmac_data.tx_gain_buffalo = true; + } + ++static int ath79_request_ext_lna_gpio(unsigned chain, int gpio) ++{ ++ char buf[32]; ++ char *label; ++ int err; ++ ++ scnprintf(buf, sizeof(buf), "external LNA%u", chain); ++ label = kstrdup(buf, GFP_KERNEL); ++ ++ err = gpio_request_one(gpio, GPIOF_DIR_OUT | GPIOF_INIT_LOW, label); ++ if (err) { ++ pr_err("unable to request GPIO%d for external LNA%u\n", ++ gpio, chain); ++ kfree(label); ++ } ++ ++ return err; ++} ++ ++static void ar934x_set_ext_lna_gpio(unsigned chain, int gpio) ++{ ++ unsigned int sel; ++ int err; ++ ++ if (WARN_ON(chain > 1)) ++ return; ++ ++ err = ath79_request_ext_lna_gpio(chain, gpio); ++ if (err) ++ return; ++ ++ if (chain == 0) ++ sel = AR934X_GPIO_OUT_EXT_LNA0; ++ else ++ sel = AR934X_GPIO_OUT_EXT_LNA1; ++ ++ ath79_gpio_output_select(gpio, sel); ++} ++ ++void __init ath79_wmac_set_ext_lna_gpio(unsigned chain, int gpio) ++{ ++ if (soc_is_ar934x()) ++ ar934x_set_ext_lna_gpio(chain, gpio); ++} ++ + void __init ath79_register_wmac(u8 *cal_data, u8 *mac_addr) + { + if (soc_is_ar913x()) +--- a/arch/mips/ath79/dev-wmac.h ++++ b/arch/mips/ath79/dev-wmac.h +@@ -17,6 +17,7 @@ void ath79_register_wmac_simple(void); + void ath79_wmac_disable_2ghz(void); + void ath79_wmac_disable_5ghz(void); + void ath79_wmac_set_tx_gain_buffalo(void); ++void ath79_wmac_set_ext_lna_gpio(unsigned chain, int gpio); + + bool ar93xx_wmac_read_mac_address(u8 *dest); + |