| Message ID | 1338541399-30646-1-git-send-email-valentin.longchamp@keymile.com |
|---|---|
| State | Accepted, archived |
| Commit | 8f5d7a03986ac357f95c1131074e2abaa9e3fd22 |
| Delegated to: | Prafulla Wadaskar |
| Headers | show |
> -----Original Message----- > From: Valentin Longchamp [mailto:valentin.longchamp@keymile.com] > Sent: 01 June 2012 14:33 > Cc: u-boot@lists.denx.de; Valentin Longchamp; Holger Brunck; Prafulla > Wadaskar > Subject: [PATCH v4 1/5] kirkwood: add save functionality > kirkwood_mpp_conf function > > If a second non NULL argument is given to the kirkwood_mpp_conf > function, it will be used to store the current configuration of the > MPP > registers. mpp_save must be a preallocated table of the same size as > mpp_list and it must be zero terminated as well. > > A later call to kirkwood_mpp_conf function with this saved list as > first > (mpp_conf) argment will set the configuration back. > > Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> > cc: Holger Brunck <holger.brunck@keymile.com> > cc: Prafulla Wadaskar <prafulla@marvell.com> > --- Have you send just one file? I have received only one!! No Change log, pls send all files with V4 in the patch series. Regards.. Prafulla . . .
diff --git a/arch/arm/cpu/arm926ejs/kirkwood/mpp.c b/arch/arm/cpu/arm926ejs/kirkwood/mpp.c index 3da6c98..03eb2de 100644 --- a/arch/arm/cpu/arm926ejs/kirkwood/mpp.c +++ b/arch/arm/cpu/arm926ejs/kirkwood/mpp.c @@ -31,7 +31,7 @@ static u32 kirkwood_variant(void) #define MPP_CTRL(i) (KW_MPP_BASE + (i* 4)) #define MPP_NR_REGS (1 + MPP_MAX/8) -void kirkwood_mpp_conf(u32 *mpp_list) +void kirkwood_mpp_conf(u32 *mpp_list, u32 *mpp_save) { u32 mpp_ctrl[MPP_NR_REGS]; unsigned int variant_mask; @@ -52,6 +52,7 @@ void kirkwood_mpp_conf(u32 *mpp_list) while (*mpp_list) { unsigned int num = MPP_NUM(*mpp_list); unsigned int sel = MPP_SEL(*mpp_list); + unsigned int sel_save; int shift; if (num > MPP_MAX) { @@ -66,6 +67,13 @@ void kirkwood_mpp_conf(u32 *mpp_list) } shift = (num & 7) << 2; + + if (mpp_save) { + sel_save = (mpp_ctrl[num / 8] >> shift) & 0xf; + *mpp_save = num | (sel_save << 8) | variant_mask; + mpp_save++; + } + mpp_ctrl[num / 8] &= ~(0xf << shift); mpp_ctrl[num / 8] |= sel << shift; diff --git a/arch/arm/include/asm/arch-kirkwood/mpp.h b/arch/arm/include/asm/arch-kirkwood/mpp.h index b3c090e..8e50ee7 100644 --- a/arch/arm/include/asm/arch-kirkwood/mpp.h +++ b/arch/arm/include/asm/arch-kirkwood/mpp.h @@ -312,6 +312,6 @@ #define MPP_MAX 49 -void kirkwood_mpp_conf(unsigned int *mpp_list); +void kirkwood_mpp_conf(u32 *mpp_list, u32 *mpp_save); #endif
If a second non NULL argument is given to the kirkwood_mpp_conf function, it will be used to store the current configuration of the MPP registers. mpp_save must be a preallocated table of the same size as mpp_list and it must be zero terminated as well. A later call to kirkwood_mpp_conf function with this saved list as first (mpp_conf) argment will set the configuration back. Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> cc: Holger Brunck <holger.brunck@keymile.com> cc: Prafulla Wadaskar <prafulla@marvell.com> --- arch/arm/cpu/arm926ejs/kirkwood/mpp.c | 10 +++++++++- arch/arm/include/asm/arch-kirkwood/mpp.h | 2 +- 2 files changed, 10 insertions(+), 2 deletions(-)