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path: root/drivers/pwm/pwm-bfin.c
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Diffstat (limited to 'drivers/pwm/pwm-bfin.c')
-rw-r--r--drivers/pwm/pwm-bfin.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/drivers/pwm/pwm-bfin.c b/drivers/pwm/pwm-bfin.c
deleted file mode 100644
index a9a88137f2cb..000000000000
--- a/drivers/pwm/pwm-bfin.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * Blackfin Pulse Width Modulation (PWM) core
- *
- * Copyright (c) 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pwm.h>
-#include <linux/slab.h>
-
-#include <asm/gptimers.h>
-#include <asm/portmux.h>
-
-struct bfin_pwm_chip {
- struct pwm_chip chip;
-};
-
-struct bfin_pwm {
- unsigned short pin;
-};
-
-static const unsigned short pwm_to_gptimer_per[] = {
- P_TMR0, P_TMR1, P_TMR2, P_TMR3, P_TMR4, P_TMR5,
- P_TMR6, P_TMR7, P_TMR8, P_TMR9, P_TMR10, P_TMR11,
-};
-
-static int bfin_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct bfin_pwm *priv;
- int ret;
-
- if (pwm->hwpwm >= ARRAY_SIZE(pwm_to_gptimer_per))
- return -EINVAL;
-
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->pin = pwm_to_gptimer_per[pwm->hwpwm];
-
- ret = peripheral_request(priv->pin, NULL);
- if (ret) {
- kfree(priv);
- return ret;
- }
-
- pwm_set_chip_data(pwm, priv);
-
- return 0;
-}
-
-static void bfin_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct bfin_pwm *priv = pwm_get_chip_data(pwm);
-
- if (priv) {
- peripheral_free(priv->pin);
- kfree(priv);
- }
-}
-
-static int bfin_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
- int duty_ns, int period_ns)
-{
- struct bfin_pwm *priv = pwm_get_chip_data(pwm);
- unsigned long period, duty;
- unsigned long long val;
-
- val = (unsigned long long)get_sclk() * period_ns;
- do_div(val, NSEC_PER_SEC);
- period = val;
-
- val = (unsigned long long)period * duty_ns;
- do_div(val, period_ns);
- duty = period - val;
-
- if (duty >= period)
- duty = period - 1;
-
- set_gptimer_config(priv->pin, TIMER_MODE_PWM | TIMER_PERIOD_CNT);
- set_gptimer_pwidth(priv->pin, duty);
- set_gptimer_period(priv->pin, period);
-
- return 0;
-}
-
-static int bfin_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct bfin_pwm *priv = pwm_get_chip_data(pwm);
-
- enable_gptimer(priv->pin);
-
- return 0;
-}
-
-static void bfin_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- struct bfin_pwm *priv = pwm_get_chip_data(pwm);
-
- disable_gptimer(priv->pin);
-}
-
-static const struct pwm_ops bfin_pwm_ops = {
- .request = bfin_pwm_request,
- .free = bfin_pwm_free,
- .config = bfin_pwm_config,
- .enable = bfin_pwm_enable,
- .disable = bfin_pwm_disable,
- .owner = THIS_MODULE,
-};
-
-static int bfin_pwm_probe(struct platform_device *pdev)
-{
- struct bfin_pwm_chip *pwm;
- int ret;
-
- pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL);
- if (!pwm)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, pwm);
-
- pwm->chip.dev = &pdev->dev;
- pwm->chip.ops = &bfin_pwm_ops;
- pwm->chip.base = -1;
- pwm->chip.npwm = 12;
-
- ret = pwmchip_add(&pwm->chip);
- if (ret < 0) {
- dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
- return ret;
- }
-
- return 0;
-}
-
-static int bfin_pwm_remove(struct platform_device *pdev)
-{
- struct bfin_pwm_chip *pwm = platform_get_drvdata(pdev);
-
- return pwmchip_remove(&pwm->chip);
-}
-
-static struct platform_driver bfin_pwm_driver = {
- .driver = {
- .name = "bfin-pwm",
- },
- .probe = bfin_pwm_probe,
- .remove = bfin_pwm_remove,
-};
-
-module_platform_driver(bfin_pwm_driver);
-
-MODULE_LICENSE("GPL");