From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: "Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Shawn Guo" <shawnguo@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"NXP Linux Team" <linux-imx@nxp.com>
Cc: devicetree@vger.kernel.org, linux-pwm@vger.kernel.org,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/6] pwm: mxs: remove legacy methods
Date: Fri, 4 Oct 2019 15:32:03 +0200 [thread overview]
Message-ID: <20191004133207.6663-3-linux@rasmusvillemoes.dk> (raw)
In-Reply-To: <20191004133207.6663-1-linux@rasmusvillemoes.dk>
Since we now have ->apply, these are no longer relevant.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
drivers/pwm/pwm-mxs.c | 77 -------------------------------------------
1 file changed, 77 deletions(-)
diff --git a/drivers/pwm/pwm-mxs.c b/drivers/pwm/pwm-mxs.c
index 10efd3de0bb3..5a6835e18fc6 100644
--- a/drivers/pwm/pwm-mxs.c
+++ b/drivers/pwm/pwm-mxs.c
@@ -110,85 +110,8 @@ static int mxs_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
-static int mxs_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
- int duty_ns, int period_ns)
-{
- struct mxs_pwm_chip *mxs = to_mxs_pwm_chip(chip);
- int ret, div = 0;
- unsigned int period_cycles, duty_cycles;
- unsigned long rate;
- unsigned long long c;
-
- rate = clk_get_rate(mxs->clk);
- while (1) {
- c = rate / cdiv[div];
- c = c * period_ns;
- do_div(c, 1000000000);
- if (c < PERIOD_PERIOD_MAX)
- break;
- div++;
- if (div >= PERIOD_CDIV_MAX)
- return -EINVAL;
- }
-
- period_cycles = c;
- c *= duty_ns;
- do_div(c, period_ns);
- duty_cycles = c;
-
- /*
- * If the PWM channel is disabled, make sure to turn on the clock
- * before writing the register. Otherwise, keep it enabled.
- */
- if (!pwm_is_enabled(pwm)) {
- ret = clk_prepare_enable(mxs->clk);
- if (ret)
- return ret;
- }
-
- writel(duty_cycles << 16,
- mxs->base + PWM_ACTIVE0 + pwm->hwpwm * 0x20);
- writel(PERIOD_PERIOD(period_cycles) | PERIOD_ACTIVE_HIGH |
- PERIOD_INACTIVE_LOW | PERIOD_CDIV(div),
- mxs->base + PWM_PERIOD0 + pwm->hwpwm * 0x20);
-
- /*
- * If the PWM is not enabled, turn the clock off again to save power.
- */
- if (!pwm_is_enabled(pwm))
- clk_disable_unprepare(mxs->clk);
-
- return 0;
-}
-
-static int mxs_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct mxs_pwm_chip *mxs = to_mxs_pwm_chip(chip);
- int ret;
-
- ret = clk_prepare_enable(mxs->clk);
- if (ret)
- return ret;
-
- writel(1 << pwm->hwpwm, mxs->base + PWM_CTRL + SET);
-
- return 0;
-}
-
-static void mxs_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct mxs_pwm_chip *mxs = to_mxs_pwm_chip(chip);
-
- writel(1 << pwm->hwpwm, mxs->base + PWM_CTRL + CLR);
-
- clk_disable_unprepare(mxs->clk);
-}
-
static const struct pwm_ops mxs_pwm_ops = {
.apply = mxs_pwm_apply,
- .config = mxs_pwm_config,
- .enable = mxs_pwm_enable,
- .disable = mxs_pwm_disable,
.owner = THIS_MODULE,
};
--
2.20.1
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next prev parent reply other threads:[~2019-10-04 13:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-04 13:32 [PATCH v2 0/6] pwm: mxs: add support for setting polarity via DT Rasmus Villemoes
2019-10-04 13:32 ` [PATCH v2 1/6] pwm: mxs: implement ->apply Rasmus Villemoes
2019-10-04 14:18 ` Uwe Kleine-König
2019-10-04 13:32 ` Rasmus Villemoes [this message]
2019-10-04 14:19 ` [PATCH v2 2/6] pwm: mxs: remove legacy methods Uwe Kleine-König
2019-10-04 13:32 ` [PATCH v2 3/6] pwm: mxs: add support for inverse polarity Rasmus Villemoes
2019-10-04 14:20 ` Uwe Kleine-König
2019-10-04 13:32 ` [PATCH v2 4/6] dt-bindings: pwm: mxs-pwm: Increase #pwm-cells Rasmus Villemoes
2019-10-04 19:22 ` Uwe Kleine-König
2019-10-04 13:32 ` [PATCH v2 5/6] pwm: mxs: avoid a division in mxs_pwm_apply() Rasmus Villemoes
2019-10-04 14:08 ` Uwe Kleine-König
2020-01-08 12:41 ` [PATCH v2 0/6] pwm: mxs: add support for setting polarity via DT Thierry Reding
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