Hi Marek,
On Mon, Jun 11, 2018 at 2:15 PM Marek Vasut <marek.vasut@xxxxxxxxx> wrote:
> Rather than hard-coding the quirk topology, which stopped scaling,
> parse the information from DT. The code looks for all compatible
> PMICs -- da9063 and da9210 -- and checks if their IRQ line is tied
> to the same pin. If so, the code sends a matching sequence to the
> PMIC to deassert the IRQ.
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxx>
> Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Cc: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
> Cc: Simon Horman <horms+renesas@xxxxxxxxxxxx>
> Cc: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
> Acked-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> (on Koelsch)
> ---
> V2: - Replace the DT shared IRQ check loop with memcmp()
> - Send the I2C message to deassert the IRQ line to all PMICs
> in the list with shared IRQ line instead of just one
> - Add comment that this works only in case all the PMICs are
> on the same I2C bus
> V3: - Drop the addr = 0x00 init
> - Drop reinit of argsa in rcar_gen2_regulator_quirk
> V4: - Squash regulator_quirk on single line
> - Drop !np check in for_each_matching_node_and_match()
> - Use argsa in of_irq_parse_one
> V5: - Check kzalloc failure
> - Rename da...._msgs to da...._msg
> - Don't reinit quirk->shared
Thanks for the update!
> --- a/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c
> +++ b/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c
> @@ -122,7 +142,12 @@ static struct notifier_block regulator_quirk_nb = {
>
> static int __init rcar_gen2_regulator_quirk(void)
> {
> - u32 mon;
> + struct regulator_quirk *quirk, *pos, *tmp;
> + struct of_phandle_args *argsa, *argsb;
> + const struct of_device_id *id;
> + struct device_node *np;
> + u32 mon, addr;
> + int ret;
>
> if (!of_machine_is_compatible("renesas,koelsch") &&
> !of_machine_is_compatible("renesas,lager") &&
> @@ -130,22 +155,76 @@ static int __init rcar_gen2_regulator_quirk(void)
> !of_machine_is_compatible("renesas,gose"))
> return -ENODEV;
>
> + for_each_matching_node_and_match(np, rcar_gen2_quirk_match, &id) {
> + if (!of_device_is_available(np))
> + break;
> +
> + quirk = kzalloc(sizeof(*quirk), GFP_KERNEL);
> + if (!quirk) {
> + ret = -ENOMEM;
> + goto err_mem;
> + }
> +
> + argsa = &quirk->irq_args;
> + memcpy(&quirk->i2c_msg, id->data, sizeof(quirk->i2c_msg));
> +
> + ret = of_property_read_u32(np, "reg", &addr);
> + if (ret)
> + return ret;
I think it's safer to skip this entry and continue, after calling
kfree(quirk), of course.
> +
> + quirk->id = id;
> + quirk->i2c_msg.addr = addr;
> +
> + ret = of_irq_parse_one(np, 0, argsa);
> + if (ret)
> + return ret;
kfree(quirk) and continue...
> +
> + list_for_each_entry(pos, &quirk_list, list) {
> + argsb = &pos->irq_args;
> +
> + if (argsa->args_count != argsb->args_count)
> + continue;
> +
> + ret = memcmp(argsa->args, argsb->args,
> + argsa->args_count *
> + sizeof(argsa->args[0]));
> + if (!ret) {
> + pos->shared = true;
> + quirk->shared = true;
> + }
> + }
> +
> + list_add_tail(&quirk->list, &quirk_list);
> + }
> +
With the above fixed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
