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authorAaron Durbin <adurbin@chromium.org>2013-10-31 11:58:32 -0500
committerAaron Durbin <adurbin@google.com>2014-02-27 06:35:44 +0100
commit4a082c669c50e5ccca51069b47a928be20d0f8c0 (patch)
tree7570b066b3924edf569974a8348363f6db4a8ba9 /src/soc/intel
parentbc69ae9823e9260bee6f2db557a6d26c683f4ad2 (diff)
baytrail: use common code for iosf accessors
The same sequence is used regardless of the port being read or written. Therefore, use the same implementation for reading or writing to a port. BUG=None BRANCH=None TEST=Built and booted through depthcharge. Dev and recovery screens still work. Nothing bizarre in console output. Change-Id: I1a64b54b50472fa7d601e199653eb4a76accf910 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/175441 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/4922 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/soc/intel')
-rw-r--r--src/soc/intel/baytrail/iosf.c115
1 files changed, 41 insertions, 74 deletions
diff --git a/src/soc/intel/baytrail/iosf.c b/src/soc/intel/baytrail/iosf.c
index 8016446338..a7f7a905bc 100644
--- a/src/soc/intel/baytrail/iosf.c
+++ b/src/soc/intel/baytrail/iosf.c
@@ -42,35 +42,42 @@ static inline uint32_t read_iosf_reg(int reg)
}
#endif
-uint32_t iosf_bunit_read(int reg)
+/* Common sequences for all the port accesses. */
+static uint32_t iosf_read_port(uint32_t cr, int reg)
{
- uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_BUNIT) |
- IOSF_PORT(IOSF_PORT_BUNIT) | IOSF_REG(reg) | IOSF_BYTE_EN;
-
+ cr |= IOSF_REG(reg) | IOSF_BYTE_EN;
write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
write_iosf_reg(MCR_REG, cr);
return read_iosf_reg(MDR_REG);
}
-void iosf_bunit_write(int reg, uint32_t val)
+static void iosf_write_port(uint32_t cr, int reg, uint32_t val)
{
- uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_BUNIT) |
- IOSF_PORT(IOSF_PORT_BUNIT) | IOSF_REG(reg) | IOSF_BYTE_EN;
-
+ cr |= IOSF_REG(reg) | IOSF_BYTE_EN;
write_iosf_reg(MDR_REG, val);
write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
write_iosf_reg(MCR_REG, cr);
}
+uint32_t iosf_bunit_read(int reg)
+{
+ uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_BUNIT) |
+ IOSF_PORT(IOSF_PORT_BUNIT);
+ return iosf_read_port(cr, reg);
+}
+
+void iosf_bunit_write(int reg, uint32_t val)
+{
+ uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_BUNIT) |
+ IOSF_PORT(IOSF_PORT_BUNIT);
+ iosf_write_port(cr, reg, val);
+}
+
uint32_t iosf_dunit_read(int reg)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_SYSMEMC) |
- IOSF_PORT(IOSF_PORT_SYSMEMC) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
- return read_iosf_reg(MDR_REG);
+ IOSF_PORT(IOSF_PORT_SYSMEMC);
+ return iosf_read_port(cr, reg);
}
uint32_t iosf_dunit_ch0_read(int reg)
@@ -81,109 +88,69 @@ uint32_t iosf_dunit_ch0_read(int reg)
uint32_t iosf_dunit_ch1_read(int reg)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_SYSMEMC) |
- IOSF_PORT(IOSF_PORT_DUNIT_CH1) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
- return read_iosf_reg(MDR_REG);
+ IOSF_PORT(IOSF_PORT_DUNIT_CH1);
+ return iosf_read_port(cr, reg);
}
void iosf_dunit_write(int reg, uint32_t val)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_SYSMEMC) |
- IOSF_PORT(IOSF_PORT_SYSMEMC) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MDR_REG, val);
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
+ IOSF_PORT(IOSF_PORT_SYSMEMC);
+ iosf_write_port(cr, reg, val);
}
uint32_t iosf_punit_read(int reg)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_PMC) |
- IOSF_PORT(IOSF_PORT_PMC) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
- return read_iosf_reg(MDR_REG);
+ IOSF_PORT(IOSF_PORT_PMC);
+ return iosf_read_port(cr, reg);
}
void iosf_punit_write(int reg, uint32_t val)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_PMC) |
- IOSF_PORT(IOSF_PORT_PMC) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MDR_REG, val);
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
+ IOSF_PORT(IOSF_PORT_PMC);
+ iosf_write_port(cr, reg, val);
}
uint32_t iosf_usbphy_read(int reg)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_USBPHY) |
- IOSF_PORT(IOSF_PORT_USBPHY) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
- return read_iosf_reg(MDR_REG);
+ IOSF_PORT(IOSF_PORT_USBPHY);
+ return iosf_read_port(cr, reg);
}
void iosf_usbphy_write(int reg, uint32_t val)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_USBPHY) |
- IOSF_PORT(IOSF_PORT_USBPHY) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MDR_REG, val);
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
+ IOSF_PORT(IOSF_PORT_USBPHY);
+ return iosf_write_port(cr, reg, val);
}
uint32_t iosf_ushphy_read(int reg)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_USHPHY) |
- IOSF_PORT(IOSF_PORT_USHPHY) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
- return read_iosf_reg(MDR_REG);
+ IOSF_PORT(IOSF_PORT_USHPHY);
+ return iosf_read_port(cr, reg);
}
void iosf_ushphy_write(int reg, uint32_t val)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_USHPHY) |
- IOSF_PORT(IOSF_PORT_USHPHY) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MDR_REG, val);
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
+ IOSF_PORT(IOSF_PORT_USHPHY);
+ return iosf_write_port(cr, reg, val);
}
uint32_t iosf_lpss_read(int reg)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_LPSS) |
- IOSF_PORT(IOSF_PORT_LPSS) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
- return read_iosf_reg(MDR_REG);
+ IOSF_PORT(IOSF_PORT_LPSS);
+ return iosf_read_port(cr, reg);
}
void iosf_lpss_write(int reg, uint32_t val)
{
uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_LPSS) |
- IOSF_PORT(IOSF_PORT_LPSS) | IOSF_REG(reg) |
- IOSF_BYTE_EN;
-
- write_iosf_reg(MDR_REG, val);
- write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg));
- write_iosf_reg(MCR_REG, cr);
+ IOSF_PORT(IOSF_PORT_LPSS);
+ return iosf_write_port(cr, reg, val);
}