kernel/drivers/soc/fsl/qe, branch linux-6.9.y

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

2023-12-12T09:29:20Z

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: Remove timeslots handling from setup_chan()

2023-12-12T09:29:20Z

Timeslots setting is done at channel start() and stop(). There is no more need to do that during setup_chan(). Simply remove timeslot setting from setup_chan(). Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-17-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Handle timeslot entries at channel start() and stop()

2023-12-12T09:29:20Z

In order to support runtime timeslot route changes, enable the channel timeslot entries at channel start() and disable them at channel stop(). Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-16-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Introduce is_tsa_64rxtx flag

2023-12-12T09:29:20Z

In order to support runtime timeslot route changes, some operations will be different according the routing table used (common Rx and Tx table or one table for Rx and one for Tx). The is_tsa_64rxtx flag is introduced to avoid extra computation to determine the table format each time we need it. It is set once at initialization. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-15-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Split Tx and Rx TSA entries setup

2023-12-12T09:29:20Z

The Tx and Rx entries for a given channel are set in one function. In order to modify Rx entries and Tx entries independently of one other, split this function in one for the Rx part and one for the Tx part. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-14-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Add support for disabling channel TSA entries

2023-12-12T09:29:20Z

In order to allow runtime timeslot route changes, disabling channel TSA entries needs to be supported. Add support for this new feature. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-13-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Check available timeslots in qmc_check_chans()

2023-12-12T09:29:20Z

The timeslots checked in qmc_check_chans() are the timeslots used. With the introduction of the available timeslots, the used timeslots are a subset of the available timeslots. The timeslots checked during the qmc_check_chans() call should be the available ones. Simply update and check the available timeslots instead of the used timeslots in qmc_check_chans(). Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-12-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Remove no more needed checks from qmc_check_chans()

2023-12-12T09:29:20Z

The newly introduced qmc_chan_setup_tsa* functions check that the channel entries are not already used. These checks are also performed by qmc_check_chans() and are no more needed. Remove them from qmc_check_chans(). Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-11-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Introduce qmc_chan_setup_tsa*

2023-12-12T09:29:20Z

Introduce the qmc_chan_setup_tsa* functions to setup entries related to the given channel. Use them during QMC channels setup. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-10-herve.codina@bootlin.com

soc: fsl: cpm1: qmc: Rename qmc_setup_tsa* to qmc_init_tsa*

2023-12-12T09:29:20Z

qmc_setup_tsa* are called once at initialisation. They initialize the QMC TSA table. In order to introduce setup function later on for dynamic timeslots management, rename the function to avoid later confusion. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20231205152116.122512-9-herve.codina@bootlin.com