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| author | Olof Johansson | 2016-02-25 02:16:01 +0100 |
|---|---|---|
| committer | Olof Johansson | 2016-02-25 02:17:01 +0100 |
| commit | f628c64fc0ffdcd08f39d74ec23ed7706cb8653b (patch) | |
| tree | 91c6355e506b09691418c01bed69271c08e057c1 /drivers/usb | |
| parent | Merge tag 'scpi-for-v4.6/updates' of git://git.kernel.org/pub/scm/linux/kerne... (diff) | |
| parent | clk: at91: remove useless includes (diff) | |
| download | kernel-qcow2-linux-f628c64fc0ffdcd08f39d74ec23ed7706cb8653b.tar.gz kernel-qcow2-linux-f628c64fc0ffdcd08f39d74ec23ed7706cb8653b.tar.xz kernel-qcow2-linux-f628c64fc0ffdcd08f39d74ec23ed7706cb8653b.zip | |
Merge tag 'at91-ab-4.6-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into next/drivers
From Alexandre Belloni:
"This is a rework of the PMC driver. It touches multiple subsystems so
the easiest path is through arm-soc."
drivers update for 4.6:
- Big PMC rework that touches clk, PM, usb
* tag 'at91-ab-4.6-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
clk: at91: remove useless includes
clk: at91: pmc: remove useless capacities handling
clk: at91: pmc: drop at91_pmc_base
usb: gadget: atmel: access the PMC using regmap
ARM: at91: remove useless includes and function prototypes
ARM: at91: pm: move idle functions to pm.c
ARM: at91: pm: find and remap the pmc
ARM: at91: pm: simply call at91_pm_init
clk: at91: pmc: move pmc structures to C file
clk: at91: pmc: merge at91_pmc_init in atmel_pmc_probe
clk: at91: remove IRQ handling and use polling
clk: at91: make use of syscon/regmap internally
clk: at91: make use of syscon to share PMC registers in several drivers
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/udc/atmel_usba_udc.c | 20 | ||||
| -rw-r--r-- | drivers/usb/gadget/udc/atmel_usba_udc.h | 2 |
2 files changed, 12 insertions, 10 deletions
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 8755b2c2aada..04265de885a9 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -17,7 +17,9 @@ #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/list.h> +#include <linux/mfd/syscon.h> #include <linux/platform_device.h> +#include <linux/regmap.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/atmel_usba_udc.h> @@ -1888,20 +1890,15 @@ static int atmel_usba_stop(struct usb_gadget *gadget) #ifdef CONFIG_OF static void at91sam9rl_toggle_bias(struct usba_udc *udc, int is_on) { - unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR); - - if (is_on) - at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); - else - at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); + regmap_update_bits(udc->pmc, AT91_CKGR_UCKR, AT91_PMC_BIASEN, + is_on ? AT91_PMC_BIASEN : 0); } static void at91sam9g45_pulse_bias(struct usba_udc *udc) { - unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR); - - at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); - at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); + regmap_update_bits(udc->pmc, AT91_CKGR_UCKR, AT91_PMC_BIASEN, 0); + regmap_update_bits(udc->pmc, AT91_CKGR_UCKR, AT91_PMC_BIASEN, + AT91_PMC_BIASEN); } static const struct usba_udc_errata at91sam9rl_errata = { @@ -1938,6 +1935,9 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, return ERR_PTR(-EINVAL); udc->errata = match->data; + udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9g45-pmc"); + if (udc->errata && IS_ERR(udc->pmc)) + return ERR_CAST(udc->pmc); udc->num_ep = 0; diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index ea448a344767..3e1c9d589dfa 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -354,6 +354,8 @@ struct usba_udc { struct dentry *debugfs_root; struct dentry *debugfs_regs; #endif + + struct regmap *pmc; }; static inline struct usba_ep *to_usba_ep(struct usb_ep *ep) |