kernel/linux.git/include/soc/fsl/qe, branch v6.19.11

soc: fsl: qe: Add missing PUSHSCHED command

2024-09-03T05:49:20+00:00

The PUSHSCHED command is missing in the QE header file. This command is supported on MPC8321 and is used to modify the start address for the task running on a given peripheral. It is needed for the QMC in order to perform the re-initialization procedure and so, ensure the correct UCC setup in that case. Simply add the missing command in the commands list available in the QE header file. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20240808071132.149251-34-herve.codina@bootlin.com Signed-off-by: Christophe Leroy

soc: fsl: qe: Add resource-managed muram allocators

2024-09-03T05:49:20+00:00

Introduce devm_cpm_muram_alloc() and devm_cpm_muram_alloc_fixed(), the resource-managed version of cpm_muram_alloc and cpm_muram_alloc_fixed(). These resource-managed versions simplify the user avoiding the need to call cpm_muram_free(). Indeed, the allocated area returned by these functions will be automatically freed on driver detach. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20240808071132.149251-33-herve.codina@bootlin.com Signed-off-by: Christophe Leroy

soc: fsl: cpm1: qmc: Introduce qmc_chan_count_phandles()

2024-07-04T11:24:59+00:00

No function in the QMC API is available to get the number of phandles present in a phandle list. Fill this lack introducing qmc_chan_count_phandles(). Signed-off-by: Herve Codina Link: https://patch.msgid.link/20240701113038.55144-9-herve.codina@bootlin.com Signed-off-by: Mark Brown

soc: fsl: cpm1: qmc: Introduce functions to get a channel from a phandle list

2024-07-04T11:24:58+00:00

qmc_chan_get_byphandle() and the resource managed version retrieve a channel from a simple phandle. Extend the API and introduce qmc_chan_get_byphandles_index() and the resource managed version in order to retrieve a channel from a phandle list using the provided index to identify the phandle in the list. Also update qmc_chan_get_byphandle() and the resource managed version to use qmc_chan_get_byphandles_index() and so avoid code duplication. Signed-off-by: Herve Codina Link: https://patch.msgid.link/20240701113038.55144-8-herve.codina@bootlin.com Signed-off-by: Mark Brown

soc: fsl: cpm1: qmc: Introduce functions to change timeslots at runtime

2023-12-12T09:29:20+00:00

Introduce qmc_chan_{get,set}_ts_info() function to allow timeslots modification at runtime. The modification is provided using qmc_chan_set_ts_info() and will be applied on next qmc_chan_start(). qmc_chan_set_ts_info() must be called with the channel rx and/or tx stopped. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-18-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Add support for child devices

2023-12-12T09:29:20+00:00

QMC child devices support is needed to avoid orphan DT nodes that use a simple DT phandle to reference a QMC channel. Allow to instantiate child devices and also extend the API to get the qmc_chan using a child device. Signed-off-by: Herve Codina Link: https://lore.kernel.org/r/20231205152116.122512-7-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Extend the API to provide Rx status

2023-12-12T09:29:20+00:00

In HDLC mode, some status flags related to the data read transfer can be set by the hardware and need to be known by a QMC consumer for further analysis. Extend the API in order to provide these transfer status flags at the read complete() call. In TRANSPARENT mode, these flags have no meaning. Keep only one read complete() API and update the consumers working in transparent mode. In this case, the newly introduced flags parameter is simply unused. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-5-herve.codina@bootlin.com

docs: move powerpc under arch

2023-10-10T19:35:55+00:00

and fix all in-tree references. Architecture-specific documentation is being moved into Documentation/arch/ as a way of cleaning up the top-level documentation directory and making the docs hierarchy more closely match the source hierarchy. Signed-off-by: Costa Shulyupin Acked-by: Michael Ellerman Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20230826165737.2101199-1-costa.shul@redhat.com

soc: fsl: cpm1: Add support for QMC

2023-03-05T23:37:03+00:00

The QMC (QUICC Multichannel Controller) emulates up to 64 channels within one serial controller using the same TDM physical interface routed from the TSA. It is available in some PowerQUICC SoC such as the MPC885 or MPC866. It is also available on some Quicc Engine SoCs. This current version support CPM1 SoCs only and some enhancement are needed to support Quicc Engine SoCs. Signed-off-by: Herve Codina Acked-by: Li Yang Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230217145645.1768659-7-herve.codina@bootlin.com Signed-off-by: Mark Brown

soc: fsl: qe: request pins non-exclusively

2022-12-05T17:19:34+00:00

Commit 84582f9ed090 ("soc: fsl: qe: Avoid using gpio_to_desc()") changed qe_pin_request() to request and hold GPIO corresponding to a given pin. Unfortunately this does not work, as fhci-hcd requests these GPIOs first, befor calling qe_pin_request() (see drivers/usb/host/fhci-hcd.c::of_fhci_probe()). To fix it change qe_pin_request() to request GPIOs non-exclusively, and free them once the code determines GPIO controller and offset for each GPIO/pin. Also reaching deep into gpiolib implementation is not the best idea. We should either export gpio_chip_hwgpio() or keep converting to the global gpio numbers space until we fix the driver to implement proper pin control. Fixes: 84582f9ed090 ("soc: fsl: qe: Avoid using gpio_to_desc()") Signed-off-by: Dmitry Torokhov Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/Y400YXnWBdz1e/L5@google.com Signed-off-by: Arnd Bergmann