kernel.git/arch/powerpc/sysdev/qe_lib/qe.c, branch linux-2.6.34.y

powerpc/qe: Implement QE driver for handling resume on MPC85xx

2009-11-12T03:43:27Z

So far the driver is used to reset QE upon resume, which is needed on 85xx. Later we can move some QE initialization steps into probe(). Signed-off-by: Anton Vorontsov Signed-off-by: Kumar Gala

powerpc/qe: QE also shuts down on MPC8568

2009-11-12T03:43:15Z

It appears that QE shuts down on all MPC85xx CPUs (i.e. MPC8568 and MPC8569) and thus needs reset upon resume. So modify qe_alive_during_sleep() to account that. Signed-off-by: Anton Vorontsov Signed-off-by: Kumar Gala

powerpc/qe: Make qe_reset() code path safe for repeated invocation

2009-11-12T03:43:13Z

For MPC8569 CPUs we'll need to reset QE after each suspend, so make qe_reset() code path suitable for repeated invocation, that is: - Don't initialize rheap structures if already initialized; - Don't allocate muram for SDMA if already allocated, just reinitialize registers with previously allocated muram offset; - Remove __init attributes from qe_reset() and cpm_muram_init(); Signed-off-by: Anton Vorontsov Signed-off-by: Kumar Gala

powerpc/qe: Increase MAX_QE_RISC to 4

2009-11-12T03:43:09Z

MPC8569 CPUs have four QE RISCs, so we need to increase MAX_QE_RISC constant, otherwise qe_upload_firmware() fails at sanity checking. Signed-off-by: Anton Vorontsov Acked-by: Timur Tabi Signed-off-by: Kumar Gala

powerpc/qe: Implement qe_alive_during_sleep() helper function

2009-08-31T04:51:33Z

In some CPUs (i.e. MPC8569) QE shuts down completely during sleep, drivers may want to know that to reinitialize registers and buffer descriptors. This patch implements qe_alive_during_sleep() helper function, so far it just checks if MPC8569-compatible power management controller is present, which is a sign that QE turns off during sleep. Signed-off-by: Anton Vorontsov Signed-off-by: David S. Miller

powerpc/qe: add polling timeout to qe_issue_cmd()

2009-06-23T13:09:41Z

The qe_issue_cmd() function (Freescale PowerPC QUICC Engine library) polls on a register until a status bit changes, but does not include a timeout to handle the situation if the bit never changes. Change the code to use the new spin_event_timeout() macro, which simplifies polling on a register without a timeout. Signed-off-by: Timur Tabi Signed-off-by: Kumar Gala

powerpc/qe: update QE Serial Number

2009-05-19T05:50:24Z

The latest QE chip may have more Serial Number(SNUM)s of thread to use. We will get the number of SNUMs from device tree by reading the new property "fsl,qe-num-snums", and set 28 as the default number of SNUMs so that it is compatible with the old QE chips' device trees which don't have this new property. The macro QE_NUM_OF_SNUM is defined as the maximum number in QE snum table which is 256. Also we update the snum_init[] array with 18 more new SNUMs which are confirmed to be useful on new chip. Signed-off-by: Haiying Wang Acked-by: Timur Tabi Signed-off-by: Kumar Gala

powerpc/qe: update risc allocation for QE

2009-05-19T05:50:22Z

Change the RISC allocation to macros instead of enum, add function to read the number of risc engines from the new property "fsl,qe-num-riscs" under the qe node in dts. Add new property "fsl,qe-num-riscs" description in qe.txt Signed-off-by: Haiying Wang Acked-by: Timur Tabi Signed-off-by: Kumar Gala

powerpc/qe: Move cmxgcr_lock definition from the ucc.c into the qe.c

2008-12-03T16:47:36Z

With this patch we can compile the qe_lib/usb.c without the UCC support (that is, without UCC_GETH and/or SERIAL_QE). Fixes following link error (CONFIG_SMP should be =y to trigger this): arch/powerpc/sysdev/built-in.o: In function `qe_usb_clock_set': (.text+0x3cae): undefined reference to `cmxgcr_lock' make: *** [.tmp_vmlinux1] Error 1 While at it, also add missing spinlock.h includes. Signed-off-by: Anton Vorontsov Acked-By: Timur Tabi Signed-off-by: Kumar Gala

powerpc: Fix a bunch of sparse warnings in the qe_lib

2008-07-16T22:57:45Z

Mostly having to do with not marking things __iomem. And some failure to use appropriate accessors to read MMIO regs. Signed-off-by: Andy Fleming Signed-off-by: Kumar Gala