linaro-kernel August 2013

linaro-kernel@lists.linaro.org

110 participants
185 discussions

[PATCH 1/3] cpufreq / gx: Fix __init attribute locations

by Hanjun Guo

__init belongs after the return type on functions, not before it. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/cpufreq/gx-suspmod.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index 3dfc99b..e30fd16 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -183,7 +183,7 @@ static void gx_write_byte(int reg, int value) * gx_detect_chipset: * **/ -static __init struct pci_dev *gx_detect_chipset(void) +static struct pci_dev * __init gx_detect_chipset(void) { struct pci_dev *gx_pci = NULL; -- 1.7.9.5

11 years, 4 months

[PATCH] cpufreq: cpufreq-cpu0: NULL is a valid regulator

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Since NULL could in theory be a valid regulator we ought to check for IS_ERR() rather than for NULL. In practice this is unlikely to be an issue but it's better for neatness. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- drivers/cpufreq/cpufreq-cpu0.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index ad1fde2..09cd3a7 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -69,7 +69,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy, cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - if (cpu_reg) { + if (!IS_ERR(cpu_reg)) { rcu_read_lock(); opp = opp_find_freq_ceil(cpu_dev, &freq_Hz); if (IS_ERR(opp)) { @@ -90,7 +90,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy, freqs.new / 1000, volt ? volt / 1000 : -1); /* scaling up? scale voltage before frequency */ - if (cpu_reg && freqs.new > freqs.old) { + if (!IS_ERR(cpu_reg) && freqs.new > freqs.old) { ret = regulator_set_voltage_tol(cpu_reg, volt, tol); if (ret) { pr_err("failed to scale voltage up: %d\n", ret); @@ -102,14 +102,14 @@ static int cpu0_set_target(struct cpufreq_policy *policy, ret = clk_set_rate(cpu_clk, freq_exact); if (ret) { pr_err("failed to set clock rate: %d\n", ret); - if (cpu_reg) + if (!IS_ERR(cpu_reg)) regulator_set_voltage_tol(cpu_reg, volt_old, tol); freqs.new = freqs.old; goto post_notify; } /* scaling down? scale voltage after frequency */ - if (cpu_reg && freqs.new < freqs.old) { + if (!IS_ERR(cpu_reg) && freqs.new < freqs.old) { ret = regulator_set_voltage_tol(cpu_reg, volt, tol); if (ret) { pr_err("failed to scale voltage down: %d\n", ret); @@ -210,7 +210,6 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev) } pr_warn("failed to get cpu0 regulator: %ld\n", PTR_ERR(cpu_reg)); - cpu_reg = NULL; } cpu_clk = devm_clk_get(cpu_dev, NULL); -- 1.8.4.rc1

11 years, 4 months

[PATCH] cpufreq: cpufreq-cpu0: Use devm_regulator_get_optional()

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Since the cpufreq-cpu0 driver is capable of coping without a software controllable regulator and would be confused by a dummy one it should use devm_regulator_get_optional() to ensure no dummy is provided. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- devm_regulator_get_optional() is a new API in my tree for -next, is it OK to merge this patch via that branch? drivers/cpufreq/cpufreq-cpu0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index 09cd3a7..b946ac7 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -197,7 +197,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev) cpu_dev = &pdev->dev; cpu_dev->of_node = np; - cpu_reg = devm_regulator_get(cpu_dev, "cpu0"); + cpu_reg = devm_regulator_get_optional(cpu_dev, "cpu0"); if (IS_ERR(cpu_reg)) { /* * If cpu0 regulator supply node is present, but regulator is -- 1.8.4.rc1

11 years, 4 months

[PATCH 1/3] ASoC: max9877: Convert to use regmap API

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Signed-off-by: Mark Brown <broonie(a)linaro.org> --- sound/soc/codecs/max9877.c | 187 ++++++++++++++++++++++++++++----------------- 1 file changed, 118 insertions(+), 69 deletions(-) diff --git a/sound/soc/codecs/max9877.c b/sound/soc/codecs/max9877.c index 6b6c74c..7e2fe50 100644 --- a/sound/soc/codecs/max9877.c +++ b/sound/soc/codecs/max9877.c @@ -14,27 +14,21 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/i2c.h> +#include <linux/regmap.h> #include <sound/soc.h> #include <sound/tlv.h> #include "max9877.h" -static struct i2c_client *i2c; +static struct regmap *regmap; -static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 }; - -static void max9877_write_regs(void) -{ - unsigned int i; - u8 data[6]; - - data[0] = MAX9877_INPUT_MODE; - for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) - data[i + 1] = max9877_regs[i]; - - if (i2c_master_send(i2c, data, 6) != 6) - dev_err(&i2c->dev, "i2c write failed\n"); -} +static struct reg_default max9877_regs[] = { + { 0, 0x40 }, + { 1, 0x00 }, + { 2, 0x00 }, + { 3, 0x00 }, + { 4, 0x49 }, +}; static int max9877_get_reg(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) @@ -45,8 +39,14 @@ static int max9877_get_reg(struct snd_kcontrol *kcontrol, unsigned int shift = mc->shift; unsigned int mask = mc->max; unsigned int invert = mc->invert; + unsigned int val; + int ret; + + ret = regmap_read(regmap, reg, &val); + if (ret != 0) + return ret; - ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask; + ucontrol->value.integer.value[0] = (val >> shift) & mask; if (invert) ucontrol->value.integer.value[0] = @@ -65,18 +65,21 @@ static int max9877_set_reg(struct snd_kcontrol *kcontrol, unsigned int mask = mc->max; unsigned int invert = mc->invert; unsigned int val = (ucontrol->value.integer.value[0] & mask); + bool change; + int ret; if (invert) val = mask - val; - if (((max9877_regs[reg] >> shift) & mask) == val) - return 0; - - max9877_regs[reg] &= ~(mask << shift); - max9877_regs[reg] |= val << shift; - max9877_write_regs(); + ret = regmap_update_bits_check(regmap, reg, mask << shift, + val << shift, &change); + if (ret != 0) + return ret; - return 1; + if (change) + return 1; + else + return 0; } static int max9877_get_2reg(struct snd_kcontrol *kcontrol, @@ -88,9 +91,18 @@ static int max9877_get_2reg(struct snd_kcontrol *kcontrol, unsigned int reg2 = mc->rreg; unsigned int shift = mc->shift; unsigned int mask = mc->max; + unsigned int val; + int ret; + + ret = regmap_read(regmap, reg, &val); + if (ret != 0) + return ret; + ucontrol->value.integer.value[0] = (val >> shift) & mask; - ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask; - ucontrol->value.integer.value[1] = (max9877_regs[reg2] >> shift) & mask; + ret = regmap_read(regmap, reg2, &val); + if (ret != 0) + return ret; + ucontrol->value.integer.value[1] = (val >> shift) & mask; return 0; } @@ -106,77 +118,99 @@ static int max9877_set_2reg(struct snd_kcontrol *kcontrol, unsigned int mask = mc->max; unsigned int val = (ucontrol->value.integer.value[0] & mask); unsigned int val2 = (ucontrol->value.integer.value[1] & mask); - unsigned int change = 0; - - if (((max9877_regs[reg] >> shift) & mask) != val) - change = 1; - - if (((max9877_regs[reg2] >> shift) & mask) != val2) - change = 1; - - if (change) { - max9877_regs[reg] &= ~(mask << shift); - max9877_regs[reg] |= val << shift; - max9877_regs[reg2] &= ~(mask << shift); - max9877_regs[reg2] |= val2 << shift; - max9877_write_regs(); - } - - return change; + bool change1, change2; + int ret; + + ret = regmap_update_bits_check(regmap, reg, mask << shift, + val << shift, &change1); + if (ret != 0) + return ret; + + ret = regmap_update_bits_check(regmap, reg2, mask << shift, + val2 << shift, &change2); + if (ret != 0) + return ret; + + if (change1 || change2) + return 1; + else + return 0; } static int max9877_get_out_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - u8 value = max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK; + unsigned int val; + int ret; + + ret = regmap_read(regmap, MAX9877_OUTPUT_MODE, &val); + if (ret != 0) + return ret; + + val &= MAX9877_OUTMODE_MASK; + if (val) + val--; - if (value) - value -= 1; + ucontrol->value.integer.value[0] = val; - ucontrol->value.integer.value[0] = value; return 0; } static int max9877_set_out_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - u8 value = ucontrol->value.integer.value[0]; + unsigned int val; + bool change; + int ret; - value += 1; + val = ucontrol->value.integer.value[0] + 1; - if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value) - return 0; + ret = regmap_update_bits_check(regmap, MAX9877_OUTPUT_MODE, + MAX9877_OUTMODE_MASK, val, &change); + if (ret != 0) + return ret; - max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK; - max9877_regs[MAX9877_OUTPUT_MODE] |= value; - max9877_write_regs(); - return 1; + if (change) + return 1; + else + return 0; } static int max9877_get_osc_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - u8 value = (max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK); + unsigned int val; + int ret; + + ret = regmap_read(regmap, MAX9877_OUTPUT_MODE, &val); + if (ret != 0) + return ret; + + val &= MAX9877_OSC_MASK; + val >>= MAX9877_OSC_OFFSET; - value = value >> MAX9877_OSC_OFFSET; + ucontrol->value.integer.value[0] = val; - ucontrol->value.integer.value[0] = value; return 0; } static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - u8 value = ucontrol->value.integer.value[0]; - - value = value << MAX9877_OSC_OFFSET; - if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value) + unsigned int val; + bool change; + int ret; + + val = ucontrol->value.integer.value[0] << MAX9877_OSC_OFFSET; + ret = regmap_update_bits_check(regmap, MAX9877_OUTPUT_MODE, + MAX9877_OSC_MASK, val, &change); + if (ret != 0) + return ret; + + if (change) + return 1; + else return 0; - - max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK; - max9877_regs[MAX9877_OUTPUT_MODE] |= value; - max9877_write_regs(); - return 1; } static const unsigned int max9877_pgain_tlv[] = { @@ -258,19 +292,34 @@ int max9877_add_controls(struct snd_soc_codec *codec) } EXPORT_SYMBOL_GPL(max9877_add_controls); +static const struct regmap_config max9877_regmap = { + .reg_bits = 8, + .val_bits = 8, + + .reg_defaults = max9877_regs, + .num_reg_defaults = ARRAY_SIZE(max9877_regs), + .cache_type = REGCACHE_RBTREE, +}; + static int max9877_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { - i2c = client; + int i; + + regmap = devm_regmap_init_i2c(client, &max9877_regmap); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); - max9877_write_regs(); + /* Ensure the device is in reset state */ + for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) + regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def); return 0; } static int max9877_i2c_remove(struct i2c_client *client) { - i2c = NULL; + regmap = NULL; return 0; } -- 1.8.4.rc2

11 years, 4 months

[PATCH 1/3] ACPI / dock: Fix __init attribute locations

by Hanjun Guo

__init belongs after the return type on functions, not before it. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/acpi/dock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 8265607..c90112c 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -1055,7 +1055,7 @@ err_unregister: * * This is called by acpi_walk_namespace to look for dock stations and bays. */ -static __init acpi_status +static acpi_status __init find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv) { if (is_dock(handle) || is_ejectable_bay(handle)) -- 1.7.9.5

11 years, 4 months

[PATCH] ASoC: dapm: Ensure kcontrol list is initialised

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Ensure that the recently added path kcontrol list is initialised otherwise we may crash trying to delete routes that don't have kcontrols. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- sound/soc/soc-dapm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index b78eaa1..1e0e4ce 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -2357,6 +2357,7 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, path->sink = wsink; path->connected = connected; INIT_LIST_HEAD(&path->list); + INIT_LIST_HEAD(&path->list_kcontrol); INIT_LIST_HEAD(&path->list_source); INIT_LIST_HEAD(&path->list_sink); -- 1.8.4.rc1

11 years, 4 months

[PATCH] ASoC: dapm: Don't create routes when creating kcontrols

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Attempting to create the route as part of adding a mux control causes us to attempt to add the same route twice since we loop over all sources for the mux after creating the control. Instead do the addition in the callers. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- sound/soc/soc-dapm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 662a904..b78eaa1 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -665,7 +665,7 @@ static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, * create it. Either way, add the widget into the control's widget list */ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w, - int kci, struct snd_soc_dapm_path *path) + int kci) { struct snd_soc_dapm_context *dapm = w->dapm; struct snd_card *card = dapm->card->snd_card; @@ -766,7 +766,6 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w, return ret; w->kcontrols[kci] = kcontrol; - dapm_kcontrol_add_path(kcontrol, path); return 0; } @@ -790,9 +789,11 @@ static int dapm_new_mixer(struct snd_soc_dapm_widget *w) continue; } - ret = dapm_create_or_share_mixmux_kcontrol(w, i, path); + ret = dapm_create_or_share_mixmux_kcontrol(w, i); if (ret < 0) return ret; + + dapm_kcontrol_add_path(w->kcontrols[i], path); } } @@ -821,7 +822,7 @@ static int dapm_new_mux(struct snd_soc_dapm_widget *w) path = list_first_entry(&w->sources, struct snd_soc_dapm_path, list_sink); - ret = dapm_create_or_share_mixmux_kcontrol(w, 0, path); + ret = dapm_create_or_share_mixmux_kcontrol(w, 0); if (ret < 0) return ret; -- 1.8.4.rc1

11 years, 4 months

[PATCH] mfd: tps65010: Use power efficient workqueue for power polling

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> There is no need to use a per CPU workqueue to poll, especially with the 5s delay used, so allow the scheduler to use any CPU. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- drivers/mfd/tps65010.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/tps65010.c b/drivers/mfd/tps65010.c index 4d67692..8114567 100644 --- a/drivers/mfd/tps65010.c +++ b/drivers/mfd/tps65010.c @@ -242,8 +242,8 @@ static int dbg_show(struct seq_file *s, void *_) seq_printf(s, "mask2 %s\n", buf); /* ignore ackint2 */ - schedule_delayed_work(&tps->work, POWER_POLL_DELAY); - + queue_delayed_work(system_power_efficient_wq, &tps->work, + POWER_POLL_DELAY); /* VMAIN voltage, enable lowpower, etc */ value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1); @@ -400,7 +400,8 @@ static void tps65010_interrupt(struct tps65010 *tps) && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))) poll = 1; if (poll) - schedule_delayed_work(&tps->work, POWER_POLL_DELAY); + queue_delayed_work(system_power_efficient_wq, &tps->work, + POWER_POLL_DELAY); /* also potentially gpio-in rise or fall */ } @@ -448,7 +449,7 @@ static irqreturn_t tps65010_irq(int irq, void *_tps) disable_irq_nosync(irq); set_bit(FLAG_IRQ_ENABLE, &tps->flags); - schedule_delayed_work(&tps->work, 0); + queue_delayed_work(system_power_efficient_wq, &tps->work, 0); return IRQ_HANDLED; } @@ -718,7 +719,8 @@ int tps65010_set_vbus_draw(unsigned mA) && test_and_set_bit( FLAG_VBUS_CHANGED, &the_tps->flags)) { /* gadget drivers call this in_irq() */ - schedule_delayed_work(&the_tps->work, 0); + queue_delayed_work(system_power_efficient_wq, &the_tps->work, + 0); } local_irq_restore(flags); -- 1.8.4.rc1

11 years, 4 months

[PATCH] USB: OHCI: make ohci-nxp a separate driver

by Manjunath Goudar

Separate the OHCI NXP host controller driver from ohci-hcd host code so that it can be built as a separate driver module. This work is part of enabling multi-platform kernels on ARM. Many place function name and struct name started with usb, current scenario replaced usb with ohci for proper naming. Signed-off-by: Manjunath Goudar <manjunath.goudar(a)linaro.org> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: Alan Stern <stern(a)rowland.harvard.edu> Cc: Greg KH <greg(a)kroah.com> Cc: linux-usb(a)vger.kernel.org --- drivers/usb/host/Kconfig | 8 +++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ohci-hcd.c | 15 ------ drivers/usb/host/ohci-nxp.c | 124 +++++++++++++++++-------------------------- 4 files changed, 58 insertions(+), 90 deletions(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index f19524f..002bf73 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -398,6 +398,14 @@ config USB_OHCI_HCD_S3CXXXX Enables support for the on-chip OHCI controller on S3CXXXX chips. +config USB_OHCI_HCD_LPC32XX + tristate "Support for LPC on-chip OHCI USB controller" + depends on USB_OHCI_HCD && ARCH_LPC32XX + default y + ---help--- + Enables support for the on-chip OHCI controller on + NXP chips. + config USB_OHCI_HCD_AT91 tristate "Support for Atmel on-chip OHCI USB controller" depends on USB_OHCI_HCD && ARCH_AT91 diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 9dffe81..edc0909 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -52,6 +52,7 @@ obj-$(CONFIG_USB_OHCI_HCD_OMAP3) += ohci-omap3.o obj-$(CONFIG_USB_OHCI_HCD_SPEAR) += ohci-spear.o obj-$(CONFIG_USB_OHCI_HCD_AT91) += ohci-at91.o obj-$(CONFIG_USB_OHCI_HCD_S3CXXXX) += ohci-s3c2410.o +obj-$(CONFIG_USB_OHCI_HCD_LPC32XX) += ohci-nxp.o obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o obj-$(CONFIG_USB_FHCI_HCD) += fhci.o diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index f3dcaa2..9a0b023 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1194,11 +1194,6 @@ MODULE_LICENSE ("GPL"); #define EP93XX_PLATFORM_DRIVER ohci_hcd_ep93xx_driver #endif -#ifdef CONFIG_ARCH_LPC32XX -#include "ohci-nxp.c" -#define NXP_PLATFORM_DRIVER usb_hcd_nxp_driver -#endif - #ifdef CONFIG_ARCH_DAVINCI_DA8XX #include "ohci-da8xx.c" #define DAVINCI_PLATFORM_DRIVER ohci_hcd_da8xx_driver @@ -1301,12 +1296,6 @@ static int __init ohci_hcd_mod_init(void) goto error_ep93xx; #endif -#ifdef NXP_PLATFORM_DRIVER - retval = platform_driver_register(&NXP_PLATFORM_DRIVER); - if (retval < 0) - goto error_nxp; -#endif - #ifdef DAVINCI_PLATFORM_DRIVER retval = platform_driver_register(&DAVINCI_PLATFORM_DRIVER); if (retval < 0) @@ -1320,10 +1309,6 @@ static int __init ohci_hcd_mod_init(void) platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER); error_davinci: #endif -#ifdef NXP_PLATFORM_DRIVER - platform_driver_unregister(&NXP_PLATFORM_DRIVER); - error_nxp: -#endif #ifdef EP93XX_PLATFORM_DRIVER platform_driver_unregister(&EP93XX_PLATFORM_DRIVER); error_ep93xx: diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c index 7d7d507..8d6eecf 100644 --- a/drivers/usb/host/ohci-nxp.c +++ b/drivers/usb/host/ohci-nxp.c @@ -19,10 +19,19 @@ * or implied. */ #include <linux/clk.h> -#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> #include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/module.h> #include <linux/of.h> +#include <linux/platform_device.h> #include <linux/usb/isp1301.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> + +#include "ohci.h" + #include <mach/hardware.h> #include <asm/mach-types.h> @@ -57,6 +66,11 @@ #define start_int_umask(irq) #endif +#define DRIVER_DESC "OHCI NXP driver" + +static const char hcd_name[] = "ohci-nxp"; +static struct hc_driver __read_mostly ohci_nxp_hc_driver; + static struct i2c_client *isp1301_i2c_client; extern int usb_disabled(void); @@ -132,14 +146,14 @@ static inline void isp1301_vbus_off(void) OTG1_VBUS_DRV); } -static void nxp_start_hc(void) +static void ohci_nxp_start_hc(void) { unsigned long tmp = __raw_readl(USB_OTG_STAT_CONTROL) | HOST_EN; __raw_writel(tmp, USB_OTG_STAT_CONTROL); isp1301_vbus_on(); } -static void nxp_stop_hc(void) +static void ohci_nxp_stop_hc(void) { unsigned long tmp; isp1301_vbus_off(); @@ -147,68 +161,9 @@ static void nxp_stop_hc(void) __raw_writel(tmp, USB_OTG_STAT_CONTROL); } -static int ohci_nxp_start(struct usb_hcd *hcd) -{ - struct ohci_hcd *ohci = hcd_to_ohci(hcd); - int ret; - - if ((ret = ohci_init(ohci)) < 0) - return ret; - - if ((ret = ohci_run(ohci)) < 0) { - dev_err(hcd->self.controller, "can't start\n"); - ohci_stop(hcd); - return ret; - } - return 0; -} - -static const struct hc_driver ohci_nxp_hc_driver = { - .description = hcd_name, - .product_desc = "nxp OHCI", - - /* - * generic hardware linkage - */ - .irq = ohci_irq, - .flags = HCD_USB11 | HCD_MEMORY, - - .hcd_priv_size = sizeof(struct ohci_hcd), - /* - * basic lifecycle operations - */ - .start = ohci_nxp_start, - .stop = ohci_stop, - .shutdown = ohci_shutdown, - - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = ohci_urb_enqueue, - .urb_dequeue = ohci_urb_dequeue, - .endpoint_disable = ohci_endpoint_disable, - - /* - * scheduling support - */ - .get_frame_number = ohci_get_frame, - - /* - * root hub support - */ - .hub_status_data = ohci_hub_status_data, - .hub_control = ohci_hub_control, -#ifdef CONFIG_PM - .bus_suspend = ohci_bus_suspend, - .bus_resume = ohci_bus_resume, -#endif - .start_port_reset = ohci_start_port_reset, -}; - -static int usb_hcd_nxp_probe(struct platform_device *pdev) +static int ohci_hcd_nxp_probe(struct platform_device *pdev) { struct usb_hcd *hcd = 0; - struct ohci_hcd *ohci; const struct hc_driver *driver = &ohci_nxp_hc_driver; struct resource *res; int ret = 0, irq; @@ -313,17 +268,15 @@ static int usb_hcd_nxp_probe(struct platform_device *pdev) goto fail_resource; } - nxp_start_hc(); + ohci_nxp_start_hc(); platform_set_drvdata(pdev, hcd); - ohci = hcd_to_ohci(hcd); - ohci_hcd_init(ohci); dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq); ret = usb_add_hcd(hcd, irq, 0); if (ret == 0) return ret; - nxp_stop_hc(); + ohci_nxp_stop_hc(); fail_resource: usb_put_hcd(hcd); fail_hcd: @@ -345,12 +298,12 @@ fail_disable: return ret; } -static int usb_hcd_nxp_remove(struct platform_device *pdev) +static int ohci_hcd_nxp_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); usb_remove_hcd(hcd); - nxp_stop_hc(); + ohci_nxp_stop_hc(); usb_put_hcd(hcd); clk_disable(usb_pll_clk); clk_put(usb_pll_clk); @@ -366,20 +319,41 @@ static int usb_hcd_nxp_remove(struct platform_device *pdev) MODULE_ALIAS("platform:usb-ohci"); #ifdef CONFIG_OF -static const struct of_device_id usb_hcd_nxp_match[] = { +static const struct of_device_id ohci_hcd_nxp_match[] = { { .compatible = "nxp,ohci-nxp" }, {}, }; -MODULE_DEVICE_TABLE(of, usb_hcd_nxp_match); +MODULE_DEVICE_TABLE(of, ohci_hcd_nxp_match); #endif -static struct platform_driver usb_hcd_nxp_driver = { +static struct platform_driver ohci_hcd_nxp_driver = { .driver = { .name = "usb-ohci", .owner = THIS_MODULE, - .of_match_table = of_match_ptr(usb_hcd_nxp_match), + .of_match_table = of_match_ptr(ohci_hcd_nxp_match), }, - .probe = usb_hcd_nxp_probe, - .remove = usb_hcd_nxp_remove, + .probe = ohci_hcd_nxp_probe, + .remove = ohci_hcd_nxp_remove, }; +static int __init ohci_nxp_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + + ohci_init_driver(&ohci_nxp_hc_driver, NULL); + return platform_driver_register(&ohci_hcd_nxp_driver); +} +module_init(ohci_nxp_init); + +static void __exit ohci_nxp_cleanup(void) +{ + platform_driver_unregister(&ohci_hcd_nxp_driver); +} +module_exit(ohci_nxp_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL v2"); + -- 1.7.9.5

11 years, 4 months

[PATCH 0/2] USB: OHCI: more bus glues as separate modules

by Manjunath Goudar

These patches are for separating the SOC On-Chip ohci host controller from ohci-hcd host code into its own driver module. This work is part of enabling multi-platform kernels on ARM. Manjunath Goudar (2): USB: OHCI: make ohci-ep93xx a separate driver USB: OHCI: make ohci-pxa27x a separate driver drivers/usb/host/Kconfig | 16 +++++ drivers/usb/host/Makefile | 2 + drivers/usb/host/ohci-ep93xx.c | 84 ++++++++++------------ drivers/usb/host/ohci-hcd.c | 24 ------- drivers/usb/host/ohci-pxa27x.c | 154 ++++++++++++++++------------------------ 5 files changed, 120 insertions(+), 160 deletions(-) -- 1.7.9.5

11 years, 4 months

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linaro-kernel August 2013