From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/avr32/mach-at32ap/hmatrix.c | 88 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 arch/avr32/mach-at32ap/hmatrix.c (limited to 'arch/avr32/mach-at32ap/hmatrix.c') diff --git a/arch/avr32/mach-at32ap/hmatrix.c b/arch/avr32/mach-at32ap/hmatrix.c new file mode 100644 index 00000000..48f5ede7 --- /dev/null +++ b/arch/avr32/mach-at32ap/hmatrix.c @@ -0,0 +1,88 @@ +/* + * High-Speed Bus Matrix helper functions + * + * Copyright (C) 2008 Atmel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include + +#include +#include + +static inline void __hmatrix_write_reg(unsigned long offset, u32 value) +{ + __raw_writel(value, (void __iomem __force *)(HMATRIX_BASE + offset)); +} + +static inline u32 __hmatrix_read_reg(unsigned long offset) +{ + return __raw_readl((void __iomem __force *)(HMATRIX_BASE + offset)); +} + +/** + * hmatrix_write_reg - write HMATRIX configuration register + * @offset: register offset + * @value: value to be written to the register at @offset + */ +void hmatrix_write_reg(unsigned long offset, u32 value) +{ + clk_enable(&at32_hmatrix_clk); + __hmatrix_write_reg(offset, value); + __hmatrix_read_reg(offset); + clk_disable(&at32_hmatrix_clk); +} + +/** + * hmatrix_read_reg - read HMATRIX configuration register + * @offset: register offset + * + * Returns the value of the register at @offset. + */ +u32 hmatrix_read_reg(unsigned long offset) +{ + u32 value; + + clk_enable(&at32_hmatrix_clk); + value = __hmatrix_read_reg(offset); + clk_disable(&at32_hmatrix_clk); + + return value; +} + +/** + * hmatrix_sfr_set_bits - set bits in a slave's Special Function Register + * @slave_id: operate on the SFR belonging to this slave + * @mask: mask of bits to be set in the SFR + */ +void hmatrix_sfr_set_bits(unsigned int slave_id, u32 mask) +{ + u32 value; + + clk_enable(&at32_hmatrix_clk); + value = __hmatrix_read_reg(HMATRIX_SFR(slave_id)); + value |= mask; + __hmatrix_write_reg(HMATRIX_SFR(slave_id), value); + __hmatrix_read_reg(HMATRIX_SFR(slave_id)); + clk_disable(&at32_hmatrix_clk); +} + +/** + * hmatrix_sfr_set_bits - clear bits in a slave's Special Function Register + * @slave_id: operate on the SFR belonging to this slave + * @mask: mask of bits to be cleared in the SFR + */ +void hmatrix_sfr_clear_bits(unsigned int slave_id, u32 mask) +{ + u32 value; + + clk_enable(&at32_hmatrix_clk); + value = __hmatrix_read_reg(HMATRIX_SFR(slave_id)); + value &= ~mask; + __hmatrix_write_reg(HMATRIX_SFR(slave_id), value); + __hmatrix_read_reg(HMATRIX_SFR(slave_id)); + clk_disable(&at32_hmatrix_clk); +} -- cgit