Add function qe_clock_source() which takes a string containing the name of a
QE clock source (as is typically found in device trees) and returns the
matching enum qe_clock value.
Update booting-without-of.txt to indicate that the UCC properties rx-clock
and tx-clock are deprecated and replaced with rx-clock-name and tx-clock-name,
which use strings instead of numbers to indicate QE clock sources.
Update qe_setbrg() to take an enum qe_clock instead of an integer as its
first paramter.
Signed-off-by: Timur Tabi <[EMAIL PROTECTED]>
---
This patch applies to Kumar's for-2.6.24 branch.
arch/powerpc/sysdev/qe_lib/qe.c | 13 +++--
include/asm-powerpc/qe.h | 98 +++++++++++++++++++--------------------
2 files changed, 56 insertions(+), 55 deletions(-)
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index 3ccd360..8551e74 100644
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -167,7 +167,7 @@ unsigned int get_brg_clk(void)
/* Program the BRG to the given sampling rate and multiplier
*
- * @brg: the BRG, 1-16
+ * @brg: the BRG, QE_BRG1 - QE_BRG16
* @rate: the desired sampling rate
* @multiplier: corresponds to the value programmed in GUMR_L[RDCR] or
* GUMR_L[TDCR]. E.g., if this BRG is the RX clock, and GUMR_L[RDCR]=01,
@@ -175,11 +175,14 @@ unsigned int get_brg_clk(void)
*
* Also note that the value programmed into the BRGC register must be even.
*/
-void qe_setbrg(unsigned int brg, unsigned int rate, unsigned int multiplier)
+void qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier)
{
u32 divisor, tempval;
u32 div16 = 0;
+ if ((brg < QE_BRG1) || (brg > QE_BRG16))
+ return;
+
divisor = get_brg_clk() / (rate * multiplier);
if (divisor > QE_BRGC_DIVISOR_MAX + 1) {
@@ -196,7 +199,7 @@ void qe_setbrg(unsigned int brg, unsigned int rate,
unsigned int multiplier)
tempval = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) |
QE_BRGC_ENABLE | div16;
- out_be32(&qe_immr->brg.brgc[brg - 1], tempval);
+ out_be32(&qe_immr->brg.brgc[brg - QE_BRG1], tempval);
}
/* Convert a string to a QE clock source enum
@@ -214,7 +217,7 @@ enum qe_clock qe_clock_source(const char *source)
if (strncasecmp(source, "brg", 3) == 0) {
i = simple_strtoul(source + 3, NULL, 10);
if ((i >= 1) && (i <= 16))
- return QE_BRG1 + i - 1;
+ return (QE_BRG1 - 1) + i;
else
return QE_CLK_DUMMY;
}
@@ -222,7 +225,7 @@ enum qe_clock qe_clock_source(const char *source)
if (strncasecmp(source, "clk", 3) == 0) {
i = simple_strtoul(source + 3, NULL, 10);
if ((i >= 1) && (i <= 24))
- return QE_CLK1 + i - 1;
+ return (QE_CLK1 - 1) + i;
else
return QE_CLK_DUMMY;
}
diff --git a/include/asm-powerpc/qe.h b/include/asm-powerpc/qe.h
index 7d53750..81403ee 100644
--- a/include/asm-powerpc/qe.h
+++ b/include/asm-powerpc/qe.h
@@ -28,6 +28,52 @@
#define MEM_PART_SECONDARY 1
#define MEM_PART_MURAM 2
+/* Clocks and BRGs */
+enum qe_clock {
+ QE_CLK_NONE = 0,
+ QE_BRG1, /* Baud Rate Generator 1 */
+ QE_BRG2, /* Baud Rate Generator 2 */
+ QE_BRG3, /* Baud Rate Generator 3 */
+ QE_BRG4, /* Baud Rate Generator 4 */
+ QE_BRG5, /* Baud Rate Generator 5 */
+ QE_BRG6, /* Baud Rate Generator 6 */
+ QE_BRG7, /* Baud Rate Generator 7 */
+ QE_BRG8, /* Baud Rate Generator 8 */
+ QE_BRG9, /* Baud Rate Generator 9 */
+ QE_BRG10, /* Baud Rate Generator 10 */
+ QE_BRG11, /* Baud Rate Generator 11 */
+ QE_BRG12, /* Baud Rate Generator 12 */
+ QE_BRG13, /* Baud Rate Generator 13 */
+ QE_BRG14, /* Baud Rate Generator 14 */
+ QE_BRG15, /* Baud Rate Generator 15 */
+ QE_BRG16, /* Baud Rate Generator 16 */
+ QE_CLK1, /* Clock 1 */
+ QE_CLK2, /* Clock 2 */
+ QE_CLK3, /* Clock 3 */
+ QE_CLK4, /* Clock 4 */
+ QE_CLK5, /* Clock 5 */
+ QE_CLK6, /* Clock 6 */
+ QE_CLK7, /* Clock 7 */
+ QE_CLK8, /* Clock 8 */
+ QE_CLK9, /* Clock 9 */
+ QE_CLK10, /* Clock 10 */
+ QE_CLK11, /* Clock 11 */
+ QE_CLK12, /* Clock 12 */
+ QE_CLK13, /* Clock 13 */
+ QE_CLK14, /* Clock 14 */
+ QE_CLK15, /* Clock 15 */
+ QE_CLK16, /* Clock 16 */
+ QE_CLK17, /* Clock 17 */
+ QE_CLK18, /* Clock 18 */
+ QE_CLK19, /* Clock 19 */
+ QE_CLK20, /* Clock 20 */
+ QE_CLK21, /* Clock 21 */
+ QE_CLK22, /* Clock 22 */
+ QE_CLK23, /* Clock 23 */
+ QE_CLK24, /* Clock 24 */
+ QE_CLK_DUMMY
+};
+
/* Export QE common operations */
extern void qe_reset(void);
extern int par_io_init(struct device_node *np);
@@ -38,7 +84,8 @@ extern int par_io_data_set(u8 port, u8 pin, u8 val);
/* QE internal API */
int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input);
-void qe_setbrg(unsigned int brg, unsigned int rate, unsigned int multiplier);
+enum qe_clock qe_clock_source(const char *source);
+void qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier);
int qe_get_snum(void);
void qe_put_snum(u8 snum);
unsigned long qe_muram_alloc(int size, int align);
@@ -129,55 +176,6 @@ enum comm_dir {
COMM_DIR_RX_AND_TX = 3
};
-/* Clocks and BRGs */
-enum qe_clock {
- QE_CLK_NONE = 0,
- QE_BRG1, /* Baud Rate Generator 1 */
- QE_BRG2, /* Baud Rate Generator 2 */
- QE_BRG3, /* Baud Rate Generator 3 */
- QE_BRG4, /* Baud Rate Generator 4 */
- QE_BRG5, /* Baud Rate Generator 5 */
- QE_BRG6, /* Baud Rate Generator 6 */
- QE_BRG7, /* Baud Rate Generator 7 */
- QE_BRG8, /* Baud Rate Generator 8 */
- QE_BRG9, /* Baud Rate Generator 9 */
- QE_BRG10, /* Baud Rate Generator 10 */
- QE_BRG11, /* Baud Rate Generator 11 */
- QE_BRG12, /* Baud Rate Generator 12 */
- QE_BRG13, /* Baud Rate Generator 13 */
- QE_BRG14, /* Baud Rate Generator 14 */
- QE_BRG15, /* Baud Rate Generator 15 */
- QE_BRG16, /* Baud Rate Generator 16 */
- QE_CLK1, /* Clock 1 */
- QE_CLK2, /* Clock 2 */
- QE_CLK3, /* Clock 3 */
- QE_CLK4, /* Clock 4 */
- QE_CLK5, /* Clock 5 */
- QE_CLK6, /* Clock 6 */
- QE_CLK7, /* Clock 7 */
- QE_CLK8, /* Clock 8 */
- QE_CLK9, /* Clock 9 */
- QE_CLK10, /* Clock 10 */
- QE_CLK11, /* Clock 11 */
- QE_CLK12, /* Clock 12 */
- QE_CLK13, /* Clock 13 */
- QE_CLK14, /* Clock 14 */
- QE_CLK15, /* Clock 15 */
- QE_CLK16, /* Clock 16 */
- QE_CLK17, /* Clock 17 */
- QE_CLK18, /* Clock 18 */
- QE_CLK19, /* Clock 19 */
- QE_CLK20, /* Clock 20 */
- QE_CLK21, /* Clock 21 */
- QE_CLK22, /* Clock 22 */
- QE_CLK23, /* Clock 23 */
- QE_CLK24, /* Clock 24 */
- QE_CLK_DUMMY
-};
-
-/* Convert a string to a QE clock source enum */
-enum qe_clock qe_clock_source(const char *source);
-
/* QE CMXUCR Registers.
* There are two UCCs represented in each of the four CMXUCR registers.
* These values are for the UCC in the LSBs
--
1.5.2.4
-
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