From f37be01e6dc606f2fcc5e95c9933d948ce19bd35 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 22 Jun 2016 08:27:17 +0200 Subject: mfd: qcom_rpm: Parametrize also ack selector size The RPM has two sets of selectors (IPC bit fields): request and acknowledge. Apparently, some models use 4*32 bit words for select and some use 7*32 bit words for request, but all use 7*32 words for acknowledge bits. So apparently you can on the models with requests of 4*32 select bits send 4*32 messages and get 7*32 different replies, so on ACK interrupt, 7*32 bit words need to be read. This is how the vendor code apparently works. Cc: stable@vger.kernel.org Reported-by: Stephen Boyd Signed-off-by: Linus Walleij Reviewed-by: Bjorn Andersson Signed-off-by: Lee Jones --- drivers/mfd/qcom_rpm.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'drivers/mfd/qcom_rpm.c') diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c index 710cae2a9b02..2e44323455dd 100644 --- a/drivers/mfd/qcom_rpm.c +++ b/drivers/mfd/qcom_rpm.c @@ -39,7 +39,8 @@ struct qcom_rpm_data { unsigned int req_sel_off; unsigned int ack_ctx_off; unsigned int ack_sel_off; - unsigned int sel_size; + unsigned int req_sel_size; + unsigned int ack_sel_size; }; struct qcom_rpm { @@ -160,7 +161,8 @@ static const struct qcom_rpm_data apq8064_template = { .req_sel_off = 11, .ack_ctx_off = 15, .ack_sel_off = 23, - .sel_size = 4, + .req_sel_size = 4, + .ack_sel_size = 7, }; static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = { @@ -248,7 +250,8 @@ static const struct qcom_rpm_data msm8660_template = { .req_sel_off = 11, .ack_ctx_off = 19, .ack_sel_off = 27, - .sel_size = 7, + .req_sel_size = 7, + .ack_sel_size = 7, }; static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = { @@ -335,7 +338,8 @@ static const struct qcom_rpm_data msm8960_template = { .req_sel_off = 11, .ack_ctx_off = 15, .ack_sel_off = 23, - .sel_size = 4, + .req_sel_size = 4, + .ack_sel_size = 7, }; static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = { @@ -380,7 +384,8 @@ static const struct qcom_rpm_data ipq806x_template = { .req_sel_off = 11, .ack_ctx_off = 15, .ack_sel_off = 23, - .sel_size = 4, + .req_sel_size = 4, + .ack_sel_size = 7, }; static const struct of_device_id qcom_rpm_of_match[] = { @@ -417,7 +422,7 @@ int qcom_rpm_write(struct qcom_rpm *rpm, writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i)); bitmap_set((unsigned long *)sel_mask, res->select_id, 1); - for (i = 0; i < rpm->data->sel_size; i++) { + for (i = 0; i < rpm->data->req_sel_size; i++) { writel_relaxed(sel_mask[i], RPM_CTRL_REG(rpm, rpm->data->req_sel_off + i)); } @@ -446,7 +451,7 @@ static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev) int i; ack = readl_relaxed(RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off)); - for (i = 0; i < rpm->data->sel_size; i++) + for (i = 0; i < rpm->data->ack_sel_size; i++) writel_relaxed(0, RPM_CTRL_REG(rpm, rpm->data->ack_sel_off + i)); writel(0, RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off)); -- cgit v1.2.3-58-ga151