The CAN FD IP found on RZ/G2L SoC has some HW features different to that of R-Car. For example, it has multiple resets, dedicated channel tx and error interrupts, separate global rx and error interrupts compared to shared irq for R-Car. it does not s ECC error flag registers and clk post divider present on R-Car. Similarly, R-Car V3U has 8 channels whereas other SoCs has only 2 channels. Currently all the HW differences are handled by comparing with chip_id enum. This patch series aims to replace chip_id with struct rcar_canfd_hw_info to handle the HW feature differences and driver data present on both IPs. The changes are trivial and tested on RZ/G2L SMARC EVK. This patch series depend upon[1] [1] https://lore.kernel.org/linux-renesas-soc/20221025155657.1426948-1-biju.das.jz@xxxxxxxxxxxxxx/T/#t v2->v3: * Replaced data type of max_channels from unsigned int->u8 to save memory. * Replaced data type of postdiv from unsigned int->u8 to save memory. v1->v2: * Updated commit description for R-Car V3U SoC detection using driver data. * Replaced data type of max_channels from u32->unsigned int. * Replaced multi_global_irqs->shared_global_irqs to make it positive checks. * Replaced clk_postdiv->postdiv driver data variable. * Simplified the calcualtion for fcan_freq. * Replaced info->has_gerfl to gpriv->info->has_gerfl and wrapped the ECC error flag checks inside a single if statement. * Added Rb tag from Geert patch#1,#2,#3 and #5 Biju Das (6): can: rcar_canfd: rcar_canfd_probe: Add struct rcar_canfd_hw_info to driver data can: rcar_canfd: Add max_channels to struct rcar_canfd_hw_info can: rcar_canfd: Add shared_global_irqs to struct rcar_canfd_hw_info can: rcar_canfd: Add postdiv to struct rcar_canfd_hw_info can: rcar_canfd: Add multi_channel_irqs to struct rcar_canfd_hw_info can: rcar_canfd: Add has_gerfl_eef to struct rcar_canfd_hw_info drivers/net/can/rcar/rcar_canfd.c | 104 ++++++++++++++++++------------ 1 file changed, 63 insertions(+), 41 deletions(-) -- 2.25.1
