diff options
| author | Steve Lin <stlin@nvidia.com> | 2011-10-17 17:07:54 -0700 |
|---|---|---|
| committer | Ryan Wong <ryanw@nvidia.com> | 2011-10-19 17:11:00 -0700 |
| commit | 870304b1c34477ab0157d664d09efcae5920a108 (patch) | |
| tree | 468cecc440c4edfa949af530efd38187d8e9cac1 /arch | |
| parent | e694acfd92427450476c98905a8b87816edaec96 (diff) | |
arm: tegra: baseband: Adding phy restore callback functions
Adding phy restore callback functions due to the modem handshaking change
during LP0 resume.
Bug 863224
Reviewed-on: http://git-master/r/58516
(cherry picked from commit e718eac448660ec8844d9f97e8c307d845f6063a)
Change-Id: I58af3da0951248448781da3409d392722d2e6a38
Reviewed-on: http://git-master/r/59201
Reviewed-by: Ryan Wong <ryanw@nvidia.com>
Tested-by: Ryan Wong <ryanw@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/board-enterprise-baseband.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/arch/arm/mach-tegra/board-enterprise-baseband.c b/arch/arm/mach-tegra/board-enterprise-baseband.c index 3f1b3cfbfcef..145396bea5ba 100644 --- a/arch/arm/mach-tegra/board-enterprise-baseband.c +++ b/arch/arm/mach-tegra/board-enterprise-baseband.c @@ -52,11 +52,15 @@ static struct gpio modem_gpios[] = { {MODEM_PWR_ON, GPIOF_OUT_INIT_LOW, "MODEM PWR ON"}, {MODEM_RESET, GPIOF_IN, "MODEM RESET"}, {BB_RST_OUT, GPIOF_IN, "BB RST OUT"}, + {MDM2AP_ACK, GPIOF_IN, "MDM2AP_ACK"}, {AP2MDM_ACK2, GPIOF_OUT_INIT_HIGH, "AP2MDM ACK2"}, + {AP2MDM_ACK, GPIOF_OUT_INIT_LOW, "AP2MDM ACK"}, }; static int baseband_phy_on(void); static int baseband_phy_off(void); +static void baseband_phy_restore_start(void); +static void baseband_phy_restore_end(void); static struct tegra_ulpi_trimmer e1219_trimmer = { 10, 1, 1, 1 }; @@ -64,11 +68,13 @@ static struct tegra_ulpi_config ehci2_null_ulpi_phy_config = { .trimmer = &e1219_trimmer, .post_phy_on = baseband_phy_on, .pre_phy_off = baseband_phy_off, + .phy_restore_start = baseband_phy_restore_start, + .phy_restore_end = baseband_phy_restore_end, }; static struct tegra_ehci_platform_data ehci2_null_ulpi_platform_data = { .operating_mode = TEGRA_USB_HOST, - .power_down_on_bus_suspend = 0, + .power_down_on_bus_suspend = 1, .phy_config = &ehci2_null_ulpi_phy_config, .phy_type = TEGRA_USB_PHY_TYPE_NULL_ULPI, }; @@ -95,20 +101,35 @@ static irqreturn_t mdm_start_thread(int irq, void *data) static int baseband_phy_on(void) { - /* set AP2MDM_ACK2 low */ - gpio_set_value(AP2MDM_ACK2, 0); + static bool phy_init = false; + + if (!phy_init) { + /* set AP2MDM_ACK2 low */ + gpio_set_value(AP2MDM_ACK2, 0); + phy_init = true; + } pr_info("%s\n", __func__); return 0; } static int baseband_phy_off(void) { - /* set AP2MDM_ACK2 high */ - gpio_set_value(AP2MDM_ACK2, 1); pr_info("%s\n", __func__); return 0; } +static void baseband_phy_restore_start(void) +{ + /* set AP2MDM_ACK2 high */ + gpio_set_value(AP2MDM_ACK2, 1); +} + +static void baseband_phy_restore_end(void) +{ + /* set AP2MDM_ACK2 low */ + gpio_set_value(AP2MDM_ACK2, 0); +} + static void baseband_start(void) { /* @@ -149,6 +170,7 @@ static int baseband_init(void) tegra_gpio_enable(MODEM_RESET); tegra_gpio_enable(AP2MDM_ACK2); tegra_gpio_enable(BB_RST_OUT); + tegra_gpio_enable(AP2MDM_ACK); /* export GPIO for user space access through sysfs */ gpio_export(MODEM_PWR_ON, false); |