RCC: Clean up and sanitize interfaces across F1, F2 series.

Additions:

- rcc_switch_sysclk():

  For changing the clock used as SYSCLK's source.

- enum rcc_clk:

  One for each system and secondary clock source (e.g. HSE,
  LSE). These are defined on a per-series basis in each of the
  <series/rcc.h>.

- rcc_turn_on_clk(),
  rcc_turn_off_clk(),
  rcc_is_clk_ready():

  For turning on system and secondary clock sources, and checking
  whether or not they're ready. Uses enum rcc_clk.

Removals:

- rcc_clk_init(): There's no way to port this to F2. Move it to the F1
  header. This also means we can remove the empty implementation and
  enum rcc_pll_multiplier from the F2 RCC header, where it doesn't
  make any sense.

Also fix up some includes, and rewrite rcc_clk_init() in terms of the
new clock source management functions.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/libmaple/stm32f2/rcc.c b/libmaple/stm32f2/rcc.c
index 268a9b1..7bc220d 100644
--- a/libmaple/stm32f2/rcc.c
+++ b/libmaple/stm32f2/rcc.c
@@ -110,12 +110,6 @@ const struct rcc_dev_info rcc_dev_table[] = {
     [RCC_TIM1]   = DEV_ENTRY(APB2, TIM1),
 };
 
-void rcc_clk_init(rcc_sysclk_src sysclk_src,
-                  rcc_pllsrc pll_src,
-                  rcc_pll_multiplier pll_mul) {
-    ASSERT(0);                    /* FIXME */
-}
-
 /**
  * @brief Turn on the clock line on a peripheral
  * @param id Clock ID of the peripheral to turn on.