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Legacy booting vs device tree booting fixes for omaps for

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v4.7 merge window. These are not considered urgent fixes enough
 for the v4.6-rc cycle, but we need them in v4.7 in order to drop
 the last remaining board-*.c files for omap3 for v4.8 merge window.
 
 On Nokia N900, we need to pass the MMC slot names for the legacy
 user space to work. Let's do that using auxdata as the driver is
 setting up things already with the pdata for legacy booting. Then
 we can later on discuss if we may want to have some generic binding
 describing where the MMC slots are on the device.
 
 N900 also has had the ir-rx51 device driver unusable with multiarch
 for a long time. Let's pass the dmtimer data in pdata for the driver
 to get it going again. Then once things are working, we can eventually
 change the driver to use just hrtimer and PWM framework. The driver
 changes will be queued separately.
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Merge tag 'omap-for-v4.7/legacy-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/fixes-non-critical

Merge "omap legacy boot vs dt boot fixes for v4.7 merge window"
from Tony Lindgren:

Legacy booting vs device tree booting fixes for omaps for
v4.7 merge window. These are not considered urgent fixes enough
for the v4.6-rc cycle, but we need them in v4.7 in order to drop
the last remaining board-*.c files for omap3 for v4.8 merge window.

On Nokia N900, we need to pass the MMC slot names for the legacy
user space to work. Let's do that using auxdata as the driver is
setting up things already with the pdata for legacy booting. Then
we can later on discuss if we may want to have some generic binding
describing where the MMC slots are on the device.

N900 also has had the ir-rx51 device driver unusable with multiarch
for a long time. Let's pass the dmtimer data in pdata for the driver
to get it going again. Then once things are working, we can eventually
change the driver to use just hrtimer and PWM framework. The driver
changes will be queued separately.

* tag 'omap-for-v4.7/legacy-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: n900 needs MMC slot names for legacy user space
  ARM: OMAP2+: Add more functions to pwm pdata for ir-rx51
This commit is contained in:
Arnd Bergmann 2016-05-09 16:39:14 +02:00
commit 11c3aead82
4 changed files with 94 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/arm/mach-omap2/board-rx51-peripherals.c
View File

@ -30,6 +30,8 @@
#include <linux/platform_data/spi-omap2-mcspi.h>
#include <linux/platform_data/mtd-onenand-omap2.h>
#include <plat/dmtimer.h>
#include <asm/system_info.h>
#include "common.h"
@ -47,9 +49,8 @@
#include <video/omap-panel-data.h>
#if defined(CONFIG_IR_RX51) || defined(CONFIG_IR_RX51_MODULE)
#include <linux/platform_data/pwm_omap_dmtimer.h>
#include <linux/platform_data/media/ir-rx51.h>
#endif
#include "mux.h"
#include "omap-pm.h"
@ -1212,10 +1213,40 @@ static void __init rx51_init_tsc2005(void)
gpio_to_irq(RX51_TSC2005_IRQ_GPIO);
}
#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
static struct pwm_omap_dmtimer_pdata __maybe_unused pwm_dmtimer_pdata = {
.request_by_node = omap_dm_timer_request_by_node,
.request_specific = omap_dm_timer_request_specific,
.request = omap_dm_timer_request,
.set_source = omap_dm_timer_set_source,
.get_irq = omap_dm_timer_get_irq,
.set_int_enable = omap_dm_timer_set_int_enable,
.set_int_disable = omap_dm_timer_set_int_disable,
.free = omap_dm_timer_free,
.enable = omap_dm_timer_enable,
.disable = omap_dm_timer_disable,
.get_fclk = omap_dm_timer_get_fclk,
.start = omap_dm_timer_start,
.stop = omap_dm_timer_stop,
.set_load = omap_dm_timer_set_load,
.set_match = omap_dm_timer_set_match,
.set_pwm = omap_dm_timer_set_pwm,
.set_prescaler = omap_dm_timer_set_prescaler,
.read_counter = omap_dm_timer_read_counter,
.write_counter = omap_dm_timer_write_counter,
.read_status = omap_dm_timer_read_status,
.write_status = omap_dm_timer_write_status,
};
#endif
#if defined(CONFIG_IR_RX51) || defined(CONFIG_IR_RX51_MODULE)
static struct lirc_rx51_platform_data rx51_lirc_data = {
.set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat,
.pwm_timer = 9, /* Use GPT 9 for CIR */
#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
.dmtimer = &pwm_dmtimer_pdata,
#endif
};
static struct platform_device rx51_lirc_device = {

40
arch/arm/mach-omap2/pdata-quirks.c
View File

@ -21,9 +21,11 @@
#include <linux/regulator/fixed.h>
#include <linux/platform_data/pinctrl-single.h>
#include <linux/platform_data/hsmmc-omap.h>
#include <linux/platform_data/iommu-omap.h>
#include <linux/platform_data/wkup_m3.h>
#include <linux/platform_data/pwm_omap_dmtimer.h>
#include <linux/platform_data/media/ir-rx51.h>
#include <plat/dmtimer.h>
#include "common.h"
@ -31,10 +33,13 @@
#include "dss-common.h"
#include "control.h"
#include "omap_device.h"
#include "omap-pm.h"
#include "omap-secure.h"
#include "soc.h"
#include "hsmmc.h"
static struct omap_hsmmc_platform_data __maybe_unused mmc_pdata[2];
struct pdata_init {
const char *compatible;
void (*fn)(void);
@ -268,9 +273,13 @@ static struct platform_device omap3_rom_rng_device = {
},
};
static struct platform_device rx51_lirc_device;
static void __init nokia_n900_legacy_init(void)
{
hsmmc2_internal_input_clk();
mmc_pdata[0].name = "external";
mmc_pdata[1].name = "internal";
if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
@ -286,6 +295,8 @@ static void __init nokia_n900_legacy_init(void)
platform_device_register(&omap3_rom_rng_device);
}
platform_device_register(&rx51_lirc_device);
}
static void __init omap3_tao3530_legacy_init(void)
@ -453,8 +464,14 @@ void omap_auxdata_legacy_init(struct device *dev)
/* Dual mode timer PWM callbacks platdata */
#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
static struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
.request_by_node = omap_dm_timer_request_by_node,
.request_specific = omap_dm_timer_request_specific,
.request = omap_dm_timer_request,
.set_source = omap_dm_timer_set_source,
.get_irq = omap_dm_timer_get_irq,
.set_int_enable = omap_dm_timer_set_int_enable,
.set_int_disable = omap_dm_timer_set_int_disable,
.free = omap_dm_timer_free,
.enable = omap_dm_timer_enable,
.disable = omap_dm_timer_disable,
@ -465,10 +482,29 @@ struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
.set_match = omap_dm_timer_set_match,
.set_pwm = omap_dm_timer_set_pwm,
.set_prescaler = omap_dm_timer_set_prescaler,
.read_counter = omap_dm_timer_read_counter,
.write_counter = omap_dm_timer_write_counter,
.read_status = omap_dm_timer_read_status,
.write_status = omap_dm_timer_write_status,
};
#endif
static struct lirc_rx51_platform_data __maybe_unused rx51_lirc_data = {
.set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat,
.pwm_timer = 9, /* Use GPT 9 for CIR */
#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
.dmtimer = &pwm_dmtimer_pdata,
#endif
};
static struct platform_device __maybe_unused rx51_lirc_device = {
.name = "lirc_rx51",
.id = -1,
.dev = {
.platform_data = &rx51_lirc_data,
},
};
/*
* Few boards still need auxdata populated before we populate
* the dev entries in of_platform_populate().
@ -497,6 +533,8 @@ static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
&omap3_iommu_pdata),
OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]),
OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]),
/* Only on am3517 */
OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",

1
include/linux/platform_data/media/ir-rx51.h
View File

@ -5,6 +5,7 @@ struct lirc_rx51_platform_data {
int pwm_timer;
int(*set_max_mpu_wakeup_lat)(struct device *dev, long t);
struct pwm_omap_dmtimer_pdata *dmtimer;
};
#endif

21
include/linux/platform_data/pwm_omap_dmtimer.h
View File

@ -35,6 +35,16 @@
#ifndef __PWM_OMAP_DMTIMER_PDATA_H
#define __PWM_OMAP_DMTIMER_PDATA_H
/* clock sources */
#define PWM_OMAP_DMTIMER_SRC_SYS_CLK 0x00
#define PWM_OMAP_DMTIMER_SRC_32_KHZ 0x01
#define PWM_OMAP_DMTIMER_SRC_EXT_CLK 0x02
/* timer interrupt enable bits */
#define PWM_OMAP_DMTIMER_INT_CAPTURE (1 << 2)
#define PWM_OMAP_DMTIMER_INT_OVERFLOW (1 << 1)
#define PWM_OMAP_DMTIMER_INT_MATCH (1 << 0)
/* trigger types */
#define PWM_OMAP_DMTIMER_TRIGGER_NONE 0x00
#define PWM_OMAP_DMTIMER_TRIGGER_OVERFLOW 0x01
@ -45,15 +55,23 @@ typedef struct omap_dm_timer pwm_omap_dmtimer;
struct pwm_omap_dmtimer_pdata {
pwm_omap_dmtimer *(*request_by_node)(struct device_node *np);
pwm_omap_dmtimer *(*request_specific)(int timer_id);
pwm_omap_dmtimer *(*request)(void);
int (*free)(pwm_omap_dmtimer *timer);
void (*enable)(pwm_omap_dmtimer *timer);
void (*disable)(pwm_omap_dmtimer *timer);
int (*get_irq)(pwm_omap_dmtimer *timer);
int (*set_int_enable)(pwm_omap_dmtimer *timer, unsigned int value);
int (*set_int_disable)(pwm_omap_dmtimer *timer, u32 mask);
struct clk *(*get_fclk)(pwm_omap_dmtimer *timer);
int (*start)(pwm_omap_dmtimer *timer);
int (*stop)(pwm_omap_dmtimer *timer);
int (*set_source)(pwm_omap_dmtimer *timer, int source);
int (*set_load)(pwm_omap_dmtimer *timer, int autoreload,
unsigned int value);
@ -63,7 +81,10 @@ struct pwm_omap_dmtimer_pdata {
int toggle, int trigger);
int (*set_prescaler)(pwm_omap_dmtimer *timer, int prescaler);
unsigned int (*read_counter)(pwm_omap_dmtimer *timer);
int (*write_counter)(pwm_omap_dmtimer *timer, unsigned int value);
unsigned int (*read_status)(pwm_omap_dmtimer *timer);
int (*write_status)(pwm_omap_dmtimer *timer, unsigned int value);
};
#endif /* __PWM_OMAP_DMTIMER_PDATA_H */