diff options
| author | Wenyou Yang <wenyou.yang@atmel.com> | 2016-02-02 11:11:53 +0800 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2016-02-18 21:34:41 +0100 |
| commit | b55b596086292d1675a09ac77b59d51871ce4f46 (patch) | |
| tree | 1ddf0ea6591ecdeec01896c7b797670d70cd8be5 /drivers/usb/host/ehci-atmel.c | |
| parent | db5c102be282ce60c8990bb8de022b81fc9530ff (diff) | |
| download | u-boot-b55b596086292d1675a09ac77b59d51871ce4f46.tar.gz | |
drivers: usb: atmel: clean up the UTMI PLL code
Due to introducing the new UTMI PLL clock handle functions,
use these function to reduce the duplicated code.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Tested-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'drivers/usb/host/ehci-atmel.c')
| -rw-r--r-- | drivers/usb/host/ehci-atmel.c | 38 |
1 files changed, 4 insertions, 34 deletions
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c index a33fb49de9..1d7d28048b 100644 --- a/drivers/usb/host/ehci-atmel.c +++ b/drivers/usb/host/ehci-atmel.c @@ -7,37 +7,18 @@ */ #include <common.h> -#include <watchdog.h> #include <usb.h> #include <asm/io.h> -#include <asm/arch/hardware.h> -#include <asm/arch/at91_pmc.h> #include <asm/arch/clk.h> #include "ehci.h" -/* Enable UTMI PLL time out 500us - * 10 times as datasheet specified - */ -#define EN_UPLL_TIMEOUT 500UL - int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr, struct ehci_hcor **hcor) { - at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC; - ulong start_time, tmp_time; - - start_time = get_timer(0); /* Enable UTMI PLL */ - writel(AT91_PMC_UPLLEN | AT91_PMC_BIASEN, &pmc->uckr); - while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU) { - WATCHDOG_RESET(); - tmp_time = get_timer(0); - if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) { - printf("ERROR: failed to enable UPLL\n"); - return -1; - } - } + if (at91_upll_clk_enable()) + return -1; /* Enable USB Host clock */ at91_periph_clk_enable(ATMEL_ID_UHPHS); @@ -51,23 +32,12 @@ int ehci_hcd_init(int index, enum usb_init_type init, int ehci_hcd_stop(int index) { - at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC; - ulong start_time, tmp_time; - /* Disable USB Host Clock */ at91_periph_clk_disable(ATMEL_ID_UHPHS); - start_time = get_timer(0); /* Disable UTMI PLL */ - writel(readl(&pmc->uckr) & ~AT91_PMC_UPLLEN, &pmc->uckr); - while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU) { - WATCHDOG_RESET(); - tmp_time = get_timer(0); - if ((tmp_time - start_time) > EN_UPLL_TIMEOUT) { - printf("ERROR: failed to stop UPLL\n"); - return -1; - } - } + if (at91_upll_clk_disable()) + return -1; return 0; } |