nagai/kernel
3
0
Fork 0
forked from mirrors/linux
Code Pull requests Activity

cs-2000-cp: keep Reserved bit on each register

Browse source 
Thus CS2000 datasheet is indicating below, this patch
follows it.

WARNING: All "Reserved" registers must maintain their default
         state to ensure proper functional operation.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
This commit is contained in:
Kuninori Morimoto 2017-04-05 14:27:21 +09:00 committed by Michael Turquette
parent a62ca337b3
commit 1f9dfd7ac7
1 changed files with 22 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

25
drivers/clk/clk-cs2000-cp.c
View file

@ -36,15 +36,27 @@
/* DEVICE_CTRL */
#define PLL_UNLOCK (1 << 7)
#define AUXOUTDIS (1 << 1)
#define CLKOUTDIS (1 << 0)
/* DEVICE_CFG1 */
#define RSEL(x) (((x) & 0x3) << 3)
#define RSEL_MASK RSEL(0x3)
#define ENDEV1 (0x1)
/* DEVICE_CFG2 */
#define AUTORMOD (1 << 3)
#define LOCKCLK(x) (((x) & 0x3) << 1)
#define LOCKCLK_MASK LOCKCLK(0x3)
#define FRACNSRC (1 << 0)
/* GLOBAL_CFG */
#define ENDEV2 (0x1)
/* FUNC_CFG1 */
#define REFCLKDIV(x) (((x) & 0x3) << 3)
#define REFCLKDIV_MASK REFCLKDIV(0x3)
#define CH_SIZE_ERR(ch) ((ch < 0) || (ch >= CH_MAX))
#define hw_to_priv(_hw) container_of(_hw, struct cs2000_priv, hw)
#define priv_to_client(priv) (priv->client)
@ -127,7 +139,9 @@ static int cs2000_clk_in_bound_rate(struct cs2000_priv *priv,
else
return -EINVAL;
return cs2000_bset(priv, FUNC_CFG1, 0x3 << 3, val << 3);
return cs2000_bset(priv, FUNC_CFG1,
REFCLKDIV_MASK,
REFCLKDIV(val));
}
static int cs2000_wait_pll_lock(struct cs2000_priv *priv)
@ -153,7 +167,10 @@ static int cs2000_wait_pll_lock(struct cs2000_priv *priv)
static int cs2000_clk_out_enable(struct cs2000_priv *priv, bool enable)
{
/* enable both AUX_OUT, CLK_OUT */
return cs2000_write(priv, DEVICE_CTRL, enable ? 0 : 0x3);
return cs2000_bset(priv, DEVICE_CTRL,
(AUXOUTDIS | CLKOUTDIS),
enable ? 0 :
(AUXOUTDIS | CLKOUTDIS));
}
static u32 cs2000_rate_to_ratio(u32 rate_in, u32 rate_out)
@ -243,7 +260,9 @@ static int cs2000_ratio_select(struct cs2000_priv *priv, int ch)
if (ret < 0)
return ret;
ret = cs2000_write(priv, DEVICE_CFG2, 0x0);
ret = cs2000_bset(priv, DEVICE_CFG2,
(AUTORMOD | LOCKCLK_MASK | FRACNSRC),
0);
if (ret < 0)
return ret;