aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/pwm/Kconfig9
-rw-r--r--drivers/pwm/Makefile1
-rw-r--r--drivers/pwm/pwm-twl6030.c184
3 files changed, 0 insertions, 194 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index fe788a7c5495..e513cd998170 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -164,15 +164,6 @@ config PWM_TIPWMSS
164 PWM submodules require PWM config space access from submodule 164 PWM submodules require PWM config space access from submodule
165 drivers and require common parent driver support. 165 drivers and require common parent driver support.
166 166
167config PWM_TWL6030
168 tristate "TWL6030 PWM support"
169 depends on TWL4030_CORE
170 help
171 Generic PWM framework driver for TWL6030.
172
173 To compile this driver as a module, choose M here: the module
174 will be called pwm-twl6030.
175
176config PWM_TWL 167config PWM_TWL
177 tristate "TWL4030/6030 PWM support" 168 tristate "TWL4030/6030 PWM support"
178 depends on TWL4030_CORE 169 depends on TWL4030_CORE
diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
index 4b10133452c4..62a2963cfe58 100644
--- a/drivers/pwm/Makefile
+++ b/drivers/pwm/Makefile
@@ -13,7 +13,6 @@ obj-$(CONFIG_PWM_TEGRA) += pwm-tegra.o
13obj-$(CONFIG_PWM_TIECAP) += pwm-tiecap.o 13obj-$(CONFIG_PWM_TIECAP) += pwm-tiecap.o
14obj-$(CONFIG_PWM_TIEHRPWM) += pwm-tiehrpwm.o 14obj-$(CONFIG_PWM_TIEHRPWM) += pwm-tiehrpwm.o
15obj-$(CONFIG_PWM_TIPWMSS) += pwm-tipwmss.o 15obj-$(CONFIG_PWM_TIPWMSS) += pwm-tipwmss.o
16obj-$(CONFIG_PWM_TWL6030) += pwm-twl6030.o
17obj-$(CONFIG_PWM_TWL) += pwm-twl.o 16obj-$(CONFIG_PWM_TWL) += pwm-twl.o
18obj-$(CONFIG_PWM_TWL_LED) += pwm-twl-led.o 17obj-$(CONFIG_PWM_TWL_LED) += pwm-twl-led.o
19obj-$(CONFIG_PWM_VT8500) += pwm-vt8500.o 18obj-$(CONFIG_PWM_VT8500) += pwm-vt8500.o
diff --git a/drivers/pwm/pwm-twl6030.c b/drivers/pwm/pwm-twl6030.c
deleted file mode 100644
index 8e6387864ca2..000000000000
--- a/drivers/pwm/pwm-twl6030.c
+++ /dev/null
@@ -1,184 +0,0 @@
1/*
2 * twl6030_pwm.c
3 * Driver for PHOENIX (TWL6030) Pulse Width Modulator
4 *
5 * Copyright (C) 2010 Texas Instruments
6 * Author: Hemanth V <hemanthv@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include <linux/module.h>
22#include <linux/platform_device.h>
23#include <linux/pwm.h>
24#include <linux/i2c/twl.h>
25#include <linux/slab.h>
26
27#define LED_PWM_CTRL1 0xF4
28#define LED_PWM_CTRL2 0xF5
29
30/* Max value for CTRL1 register */
31#define PWM_CTRL1_MAX 255
32
33/* Pull down disable */
34#define PWM_CTRL2_DIS_PD (1 << 6)
35
36/* Current control 2.5 milli Amps */
37#define PWM_CTRL2_CURR_02 (2 << 4)
38
39/* LED supply source */
40#define PWM_CTRL2_SRC_VAC (1 << 2)
41
42/* LED modes */
43#define PWM_CTRL2_MODE_HW (0 << 0)
44#define PWM_CTRL2_MODE_SW (1 << 0)
45#define PWM_CTRL2_MODE_DIS (2 << 0)
46
47#define PWM_CTRL2_MODE_MASK 0x3
48
49struct twl6030_pwm_chip {
50 struct pwm_chip chip;
51};
52
53static int twl6030_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
54{
55 int ret;
56 u8 val;
57
58 /* Configure PWM */
59 val = PWM_CTRL2_DIS_PD | PWM_CTRL2_CURR_02 | PWM_CTRL2_SRC_VAC |
60 PWM_CTRL2_MODE_HW;
61
62 ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, LED_PWM_CTRL2);
63 if (ret < 0) {
64 dev_err(chip->dev, "%s: Failed to configure PWM, Error %d\n",
65 pwm->label, ret);
66 return ret;
67 }
68
69 return 0;
70}
71
72static int twl6030_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
73 int duty_ns, int period_ns)
74{
75 u8 duty_cycle = (duty_ns * PWM_CTRL1_MAX) / period_ns;
76 int ret;
77
78 ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, duty_cycle, LED_PWM_CTRL1);
79 if (ret < 0) {
80 pr_err("%s: Failed to configure PWM, Error %d\n",
81 pwm->label, ret);
82 return ret;
83 }
84
85 return 0;
86}
87
88static int twl6030_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
89{
90 int ret;
91 u8 val;
92
93 ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
94 if (ret < 0) {
95 dev_err(chip->dev, "%s: Failed to enable PWM, Error %d\n",
96 pwm->label, ret);
97 return ret;
98 }
99
100 /* Change mode to software control */
101 val &= ~PWM_CTRL2_MODE_MASK;
102 val |= PWM_CTRL2_MODE_SW;
103
104 ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, LED_PWM_CTRL2);
105 if (ret < 0) {
106 dev_err(chip->dev, "%s: Failed to enable PWM, Error %d\n",
107 pwm->label, ret);
108 return ret;
109 }
110
111 twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
112 return 0;
113}
114
115static void twl6030_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
116{
117 int ret;
118 u8 val;
119
120 ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
121 if (ret < 0) {
122 dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n",
123 pwm->label, ret);
124 return;
125 }
126
127 val &= ~PWM_CTRL2_MODE_MASK;
128 val |= PWM_CTRL2_MODE_HW;
129
130 ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, LED_PWM_CTRL2);
131 if (ret < 0) {
132 dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n",
133 pwm->label, ret);
134 }
135}
136
137static const struct pwm_ops twl6030_pwm_ops = {
138 .request = twl6030_pwm_request,
139 .config = twl6030_pwm_config,
140 .enable = twl6030_pwm_enable,
141 .disable = twl6030_pwm_disable,
142};
143
144static int twl6030_pwm_probe(struct platform_device *pdev)
145{
146 struct twl6030_pwm_chip *twl6030;
147 int ret;
148
149 twl6030 = devm_kzalloc(&pdev->dev, sizeof(*twl6030), GFP_KERNEL);
150 if (!twl6030)
151 return -ENOMEM;
152
153 twl6030->chip.dev = &pdev->dev;
154 twl6030->chip.ops = &twl6030_pwm_ops;
155 twl6030->chip.base = -1;
156 twl6030->chip.npwm = 1;
157
158 ret = pwmchip_add(&twl6030->chip);
159 if (ret < 0)
160 return ret;
161
162 platform_set_drvdata(pdev, twl6030);
163
164 return 0;
165}
166
167static int twl6030_pwm_remove(struct platform_device *pdev)
168{
169 struct twl6030_pwm_chip *twl6030 = platform_get_drvdata(pdev);
170
171 return pwmchip_remove(&twl6030->chip);
172}
173
174static struct platform_driver twl6030_pwm_driver = {
175 .driver = {
176 .name = "twl6030-pwm",
177 },
178 .probe = twl6030_pwm_probe,
179 .remove = __devexit_p(twl6030_pwm_remove),
180};
181module_platform_driver(twl6030_pwm_driver);
182
183MODULE_ALIAS("platform:twl6030-pwm");
184MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-26 11:06:28 -0500