diff options
Diffstat (limited to 'firmware/target/arm')
-rw-r--r-- | firmware/target/arm/imx233/pwm-imx233.c | 64 | ||||
-rw-r--r-- | firmware/target/arm/imx233/pwm-imx233.h | 68 | ||||
-rw-r--r-- | firmware/target/arm/imx233/system-imx233.c | 2 |
3 files changed, 134 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/pwm-imx233.c b/firmware/target/arm/imx233/pwm-imx233.c new file mode 100644 index 0000000000..1c5e4657de --- /dev/null +++ b/firmware/target/arm/imx233/pwm-imx233.c | |||
@@ -0,0 +1,64 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2011 by Amaury Pouly | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #include "pwm-imx233.h" | ||
22 | #include "clkctrl-imx233.h" | ||
23 | #include "pinctrl-imx233.h" | ||
24 | |||
25 | void imx233_pwm_init(void) | ||
26 | { | ||
27 | imx233_reset_block(&HW_PWM_CTRL); | ||
28 | imx233_clkctrl_enable_xtal(XTAM_PWM, true); | ||
29 | } | ||
30 | |||
31 | bool imx233_pwm_is_channel_enable(int channel) | ||
32 | { | ||
33 | return HW_PWM_CTRL & HW_PWM_CTRL__PWMx_ENABLE(channel); | ||
34 | } | ||
35 | |||
36 | void imx233_pwm_enable_channel(int channel, bool enable) | ||
37 | { | ||
38 | if(enable) | ||
39 | __REG_SET(HW_PWM_CTRL) = HW_PWM_CTRL__PWMx_ENABLE(channel); | ||
40 | else | ||
41 | __REG_CLR(HW_PWM_CTRL) = HW_PWM_CTRL__PWMx_ENABLE(channel); | ||
42 | } | ||
43 | |||
44 | void imx233_pwm_setup_channel(int channel, int period, int cdiv, int active, | ||
45 | int active_state, int inactive, int inactive_state) | ||
46 | { | ||
47 | /* stop */ | ||
48 | bool enable = imx233_pwm_is_channel_enable(channel); | ||
49 | if(enable) | ||
50 | imx233_pwm_enable_channel(channel, false); | ||
51 | /* setup pin */ | ||
52 | imx233_set_pin_function(IMX233_PWM_PIN_BANK(channel), IMX233_PWM_PIN(channel), | ||
53 | PINCTRL_FUNCTION_MAIN); | ||
54 | imx233_set_pin_drive_strength(IMX233_PWM_PIN_BANK(channel), IMX233_PWM_PIN(channel), | ||
55 | PINCTRL_DRIVE_4mA); | ||
56 | /* watch the order ! active THEN period */ | ||
57 | HW_PWM_ACTIVEx(channel) = active << HW_PWM_ACTIVEx__ACTIVE_BP | | ||
58 | inactive << HW_PWM_ACTIVEx__INACTIVE_BP; | ||
59 | HW_PWM_PERIODx(channel) = period | active_state << HW_PWM_PERIODx__ACTIVE_STATE_BP | | ||
60 | inactive_state << HW_PWM_PERIODx__INACTIVE_STATE_BP | | ||
61 | cdiv << HW_PWM_PERIODx__CDIV_BP; | ||
62 | /* restore */ | ||
63 | imx233_pwm_enable_channel(channel, enable); | ||
64 | } | ||
diff --git a/firmware/target/arm/imx233/pwm-imx233.h b/firmware/target/arm/imx233/pwm-imx233.h new file mode 100644 index 0000000000..48c7811d47 --- /dev/null +++ b/firmware/target/arm/imx233/pwm-imx233.h | |||
@@ -0,0 +1,68 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2011 by Amaury Pouly | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #ifndef __PWM_IMX233_H__ | ||
22 | #define __PWM_IMX233_H__ | ||
23 | |||
24 | #include "system.h" | ||
25 | |||
26 | #define HW_PWM_BASE 0x80064000 | ||
27 | |||
28 | #define HW_PWM_CTRL (*(volatile uint32_t *)(HW_PWM_BASE + 0x0)) | ||
29 | #define HW_PWM_CTRL__PWMx_ENABLE(x) (1 << (x)) | ||
30 | |||
31 | #define HW_PWM_ACTIVEx(x) (*(volatile uint32_t *)(HW_PWM_BASE + 0x10 + (x) * 0x20)) | ||
32 | #define HW_PWM_ACTIVEx__ACTIVE_BP 0 | ||
33 | #define HW_PWM_ACTIVEx__ACTIVE_BM 0xffff | ||
34 | #define HW_PWM_ACTIVEx__INACTIVE_BP 16 | ||
35 | #define HW_PWM_ACTIVEx__INACTIVE_BM 0xffff0000 | ||
36 | |||
37 | #define HW_PWM_PERIODx(x) (*(volatile uint32_t *)(HW_PWM_BASE + 0x20 + (x) * 0x20)) | ||
38 | #define HW_PWM_PERIODx__PERIOD_BP 0 | ||
39 | #define HW_PWM_PERIODx__PERIOD_BM 0xffff | ||
40 | #define HW_PWM_PERIODx__ACTIVE_STATE_BP 16 | ||
41 | #define HW_PWM_PERIODx__ACTIVE_STATE_BM (0x3 << 16) | ||
42 | #define HW_PWM_PERIODx__INACTIVE_STATE_BP 18 | ||
43 | #define HW_PWM_PERIODx__INACTIVE_STATE_BM (0x3 << 18) | ||
44 | #define HW_PWM_PERIODx__CDIV_BP 20 | ||
45 | #define HW_PWM_PERIODx__CDIV_BM (0x7 << 20) | ||
46 | #define HW_PWM_PERIODx__CDIV__DIV_1 0 | ||
47 | #define HW_PWM_PERIODx__CDIV__DIV_2 1 | ||
48 | #define HW_PWM_PERIODx__CDIV__DIV_4 2 | ||
49 | #define HW_PWM_PERIODx__CDIV__DIV_8 3 | ||
50 | #define HW_PWM_PERIODx__CDIV__DIV_16 4 | ||
51 | #define HW_PWM_PERIODx__CDIV__DIV_64 5 | ||
52 | #define HW_PWM_PERIODx__CDIV__DIV_256 6 | ||
53 | #define HW_PWM_PERIODx__CDIV__DIV_1024 7 | ||
54 | |||
55 | #define HW_PWM_PERIODx__STATE__HI_Z 0 | ||
56 | #define HW_PWM_PERIODx__STATE__LOW 2 | ||
57 | #define HW_PWM_PERIODx__STATE__HIGH 3 | ||
58 | |||
59 | #define IMX233_PWM_PIN_BANK(channel) 1 | ||
60 | #define IMX233_PWM_PIN(channel) (26 + (channel)) | ||
61 | |||
62 | void imx233_pwm_init(void); | ||
63 | void imx233_pwm_setup_channel(int channel, int period, int cdiv, int active, | ||
64 | int active_state, int inactive, int inactive_state); | ||
65 | void imx233_pwm_enable_channel(int channel, bool enable); | ||
66 | bool imx233_pwm_is_channel_enable(int channel); | ||
67 | |||
68 | #endif /* __PWM_IMX233_H__ */ | ||
diff --git a/firmware/target/arm/imx233/system-imx233.c b/firmware/target/arm/imx233/system-imx233.c index a06ecab9f5..eb9a3f8ee0 100644 --- a/firmware/target/arm/imx233/system-imx233.c +++ b/firmware/target/arm/imx233/system-imx233.c | |||
@@ -31,6 +31,7 @@ | |||
31 | #include "ssp-imx233.h" | 31 | #include "ssp-imx233.h" |
32 | #include "i2c-imx233.h" | 32 | #include "i2c-imx233.h" |
33 | #include "dcp-imx233.h" | 33 | #include "dcp-imx233.h" |
34 | #include "pwm-imx233.h" | ||
34 | #include "icoll-imx233.h" | 35 | #include "icoll-imx233.h" |
35 | #include "lradc-imx233.h" | 36 | #include "lradc-imx233.h" |
36 | #include "rtc-imx233.h" | 37 | #include "rtc-imx233.h" |
@@ -99,6 +100,7 @@ void system_init(void) | |||
99 | imx233_dma_init(); | 100 | imx233_dma_init(); |
100 | imx233_ssp_init(); | 101 | imx233_ssp_init(); |
101 | imx233_dcp_init(); | 102 | imx233_dcp_init(); |
103 | imx233_pwm_init(); | ||
102 | imx233_lradc_init(); | 104 | imx233_lradc_init(); |
103 | imx233_i2c_init(); | 105 | imx233_i2c_init(); |
104 | #if defined(SANSA_FUZEPLUS) && !defined(BOOTLOADER) | 106 | #if defined(SANSA_FUZEPLUS) && !defined(BOOTLOADER) |