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| author | Simon Glass <sjg@chromium.org> | 2011-11-05 04:46:44 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-12-24 10:23:30 +0100 |
| commit | 6b5763e5886c0c5aaef36eab7d660fc885b60c20 (patch) | |
| tree | 3a8fa4a6b36e0e8e2438cf4bafa850521e681436 /board/nvidia | |
| parent | 8f7431400a67c4844240f875ebd7e4bcb3332633 (diff) | |
| download | u-boot-imx-6b5763e5886c0c5aaef36eab7d660fc885b60c20.zip u-boot-imx-6b5763e5886c0c5aaef36eab7d660fc885b60c20.tar.gz u-boot-imx-6b5763e5886c0c5aaef36eab7d660fc885b60c20.tar.bz2 | |
tegra2: Tidy UART selection
UART selection is done with a lot of #ifdefs. This cleans things up
a little.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'board/nvidia')
| -rw-r--r-- | board/nvidia/common/board.c | 57 |
1 files changed, 34 insertions, 23 deletions
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c index c806a6b..5313c76 100644 --- a/board/nvidia/common/board.c +++ b/board/nvidia/common/board.c @@ -35,6 +35,12 @@ DECLARE_GLOBAL_DATA_PTR; +enum { + /* UARTs which we can enable */ + UARTA = 1 << 0, + UARTD = 1 << 3, +}; + const struct tegra2_sysinfo sysinfo = { CONFIG_TEGRA2_BOARD_STRING }; @@ -64,36 +70,32 @@ static void enable_uart(enum periph_id pid) /* * Routine: clock_init_uart - * Description: init the PLL and clock for the UART(s) + * Description: init clock for the UART(s) */ -static void clock_init_uart(void) +static void clock_init_uart(int uart_ids) { -#if defined(CONFIG_TEGRA2_ENABLE_UARTA) - enable_uart(PERIPH_ID_UART1); -#endif /* CONFIG_TEGRA2_ENABLE_UARTA */ -#if defined(CONFIG_TEGRA2_ENABLE_UARTD) - enable_uart(PERIPH_ID_UART4); -#endif /* CONFIG_TEGRA2_ENABLE_UARTD */ + if (uart_ids & UARTA) + enable_uart(PERIPH_ID_UART1); + if (uart_ids & UARTD) + enable_uart(PERIPH_ID_UART4); } /* * Routine: pin_mux_uart * Description: setup the pin muxes/tristate values for the UART(s) */ -static void pin_mux_uart(void) +static void pin_mux_uart(int uart_ids) { -#if defined(CONFIG_TEGRA2_ENABLE_UARTA) - pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA); - pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA); - - pinmux_tristate_disable(PINGRP_IRRX); - pinmux_tristate_disable(PINGRP_IRTX); -#endif /* CONFIG_TEGRA2_ENABLE_UARTA */ -#if defined(CONFIG_TEGRA2_ENABLE_UARTD) - pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD); - - pinmux_tristate_disable(PINGRP_GMC); -#endif /* CONFIG_TEGRA2_ENABLE_UARTD */ + if (uart_ids & UARTA) { + pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA); + pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA); + pinmux_tristate_disable(PINGRP_IRRX); + pinmux_tristate_disable(PINGRP_IRTX); + } + if (uart_ids & UARTD) { + pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD); + pinmux_tristate_disable(PINGRP_GMC); + } } /* @@ -114,6 +116,15 @@ int board_init(void) #ifdef CONFIG_BOARD_EARLY_INIT_F int board_early_init_f(void) { + int uart_ids = 0; /* bit mask of which UART ids to enable */ + +#ifdef CONFIG_TEGRA2_ENABLE_UARTA + uart_ids |= UARTA; +#endif +#ifdef CONFIG_TEGRA2_ENABLE_UARTD + uart_ids |= UARTD; +#endif + /* We didn't do this init in start.S, so do it now */ cpu_init_cp15(); @@ -121,10 +132,10 @@ int board_early_init_f(void) clock_early_init(); /* Initialize UART clocks */ - clock_init_uart(); + clock_init_uart(uart_ids); /* Initialize periph pinmuxes */ - pin_mux_uart(); + pin_mux_uart(uart_ids); /* Initialize periph GPIOs */ gpio_config_uart(); |