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Date: Fri, 16 Mar 2018 15:08:18 +0800
From: Aaron Wu <aaron.wu@...log.com>
To: <linux-kernel@...r.kernel.org>
CC: <aaron.wu@...log.com>
Subject: [Blackfin removal] [PATCH 20/28] pwm: Remove Blackfin PWM support
Signed-off-by: Aaron Wu <aaron.wu@...log.com>
Remove Blackfin PWM support
---
drivers/pwm/Kconfig | 9 ---
drivers/pwm/Makefile | 1 -
drivers/pwm/pwm-bfin.c | 157 -------------------------------------------------
3 files changed, 167 deletions(-)
delete mode 100644 drivers/pwm/pwm-bfin.c
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 763ee50..5d9868d 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -113,15 +113,6 @@ config PWM_BERLIN
To compile this driver as a module, choose M here: the module
will be called pwm-berlin.
-config PWM_BFIN
- tristate "Blackfin PWM support"
- depends on BFIN_GPTIMERS
- help
- Generic PWM framework driver for Blackfin.
-
- To compile this driver as a module, choose M here: the module
- will be called pwm-bfin.
-
config PWM_BRCMSTB
tristate "Broadcom STB PWM support"
depends on ARCH_BRCMSTB || BMIPS_GENERIC
diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
index 0258a74..9c676a0 100644
--- a/drivers/pwm/Makefile
+++ b/drivers/pwm/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_PWM_BCM_IPROC) += pwm-bcm-iproc.o
obj-$(CONFIG_PWM_BCM_KONA) += pwm-bcm-kona.o
obj-$(CONFIG_PWM_BCM2835) += pwm-bcm2835.o
obj-$(CONFIG_PWM_BERLIN) += pwm-berlin.o
-obj-$(CONFIG_PWM_BFIN) += pwm-bfin.o
obj-$(CONFIG_PWM_BRCMSTB) += pwm-brcmstb.o
obj-$(CONFIG_PWM_CLPS711X) += pwm-clps711x.o
obj-$(CONFIG_PWM_CRC) += pwm-crc.o
diff --git a/drivers/pwm/pwm-bfin.c b/drivers/pwm/pwm-bfin.c
deleted file mode 100644
index a9a8813..0000000
--- 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");
--
2.7.4
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