On Fri, May 11, 2018 at 08:19:29PM +0530, Rajesh Yadav wrote:
> SoCs containing dpu have a MDSS top level wrapper
> which includes sub-blocks as dpu, dsi, phy, dp etc.
> MDSS top level wrapper manages common resources like
> common clocks, power and irq for its sub-blocks.
>
> Currently, in dpu driver, all the power resource
> management is part of power_handle which manages
> these resources via a custom implementation. And
> the resource relationships are not modelled properly
> in dt. Moreover the irq domain handling code is part
> of dpu device (which is a child device) due to lack
> of a dedicated driver for MDSS top level wrapper
> device.
>
> This change adds dpu_mdss top level driver to handle
> common clock like - core clock, ahb clock
> (for register access), main power supply (i.e. gdsc)
> and irq management.
> The top level mdss device/driver acts as an interrupt
> controller and manage hwirq mapping for its child
> devices.
>
> It implements runtime_pm support for resource management.
> Child nodes can control these resources via runtime_pm
> get/put calls on their corresponding devices due to parent
> child relationship defined in dt.
>
> Changes in v2:
> - merge _dpu_mdss_hw_rev_init to dpu_mdss_init (Sean Paul)
> - merge _dpu_mdss_get_intr_sources to dpu_mdss_irq (Sean Paul)
> - fix indentation for irq_find_mapping call (Sean Paul)
> - remove unnecessary goto statements from dpu_mdss_irq (Sean Paul)
> - remove redundant param checks from
> dpu_mdss_irq_mask/unmask (Sean Paul/Jordan Crouse)
> - remove redundant param checks from
> dpu_mdss_irqdomain_map (Sean Paul/Jordan Crouse)
> - return error code from dpu_mdss_enable/disable (Sean Paul/Jordan Crouse)
> - remove redundant param check from dpu_mdss_destroy (Sean Paul)
> - remove explicit calls to devm_kfree (Sean Paul/Jordan Crouse)
> - remove compatibility check from dpu_mdss_init as
> it is conditionally called from msm_drv (Sean Paul)
> - reworked msm_dss_parse_clock() to add return checks for
> of_property_read_* calls, fix log message and
> fix alignment issues (Sean Paul/Jordan Crouse)
> - remove extra line before dpu_mdss_init (Sean Paul)
> - remove redundant param checks from __intr_offset and
> make it a void function to avoid unnecessary error
> handling from caller (Jordan Crouse)
> - remove redundant param check from dpu_mdss_irq (Jordan Crouse)
> - change mdss address space log message to debug and use %pK for
> kernel pointers (Jordan Crouse)
> - remove unnecessary log message from msm_dss_parse_clock (Jordan Crouse)
> - don't export msm_dss_parse_clock since it is used
> only by dpu driver (Jordan Crouse)
>
> Signed-off-by: Rajesh Yadav <ryadav@xxxxxxxxxxxxxx>
Reviewed-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
I know you'll get a hundred different opinions from a hundred different people
but you don't need to credit me for every change - just a single line "fixed
bugs" works for me.
> ---
> drivers/gpu/drm/msm/Makefile | 1 +
> drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 97 ---------
> drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h | 14 --
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 9 -
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 7 -
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 28 +--
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h | 11 -
> drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c | 48 +---
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 6 -
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 2 -
> drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 254 ++++++++++++++++++++++
> drivers/gpu/drm/msm/dpu_io_util.c | 57 +++++
> drivers/gpu/drm/msm/msm_drv.c | 26 ++-
> drivers/gpu/drm/msm/msm_drv.h | 2 +-
> drivers/gpu/drm/msm/msm_kms.h | 1 +
> include/linux/dpu_io_util.h | 2 +
> 16 files changed, 339 insertions(+), 226 deletions(-)
> create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
>
> diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
> index d7558ed..d9826c1 100644
> --- a/drivers/gpu/drm/msm/Makefile
> +++ b/drivers/gpu/drm/msm/Makefile
> @@ -81,6 +81,7 @@ msm-y := \
> disp/dpu1/dpu_reg_dma.o \
> disp/dpu1/dpu_rm.o \
> disp/dpu1/dpu_vbif.o \
> + disp/dpu1/dpu_mdss.o \
> dpu_dbg.o \
> dpu_io_util.o \
> dpu_dbg_evtlog.o \
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
> index fe33013..977adc4 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
> @@ -515,103 +515,6 @@ void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms)
> dpu_kms->irq_obj.total_irqs = 0;
> }
>
> -static void dpu_core_irq_mask(struct irq_data *irqd)
> -{
> - struct dpu_kms *dpu_kms;
> -
> - if (!irqd || !irq_data_get_irq_chip_data(irqd)) {
> - DPU_ERROR("invalid parameters irqd %d\n", irqd != NULL);
> - return;
> - }
> - dpu_kms = irq_data_get_irq_chip_data(irqd);
> -
> - /* memory barrier */
> - smp_mb__before_atomic();
> - clear_bit(irqd->hwirq, &dpu_kms->irq_controller.enabled_mask);
> - /* memory barrier */
> - smp_mb__after_atomic();
> -}
> -
> -static void dpu_core_irq_unmask(struct irq_data *irqd)
> -{
> - struct dpu_kms *dpu_kms;
> -
> - if (!irqd || !irq_data_get_irq_chip_data(irqd)) {
> - DPU_ERROR("invalid parameters irqd %d\n", irqd != NULL);
> - return;
> - }
> - dpu_kms = irq_data_get_irq_chip_data(irqd);
> -
> - /* memory barrier */
> - smp_mb__before_atomic();
> - set_bit(irqd->hwirq, &dpu_kms->irq_controller.enabled_mask);
> - /* memory barrier */
> - smp_mb__after_atomic();
> -}
> -
> -static struct irq_chip dpu_core_irq_chip = {
> - .name = "dpu",
> - .irq_mask = dpu_core_irq_mask,
> - .irq_unmask = dpu_core_irq_unmask,
> -};
> -
> -static int dpu_core_irqdomain_map(struct irq_domain *domain,
> - unsigned int irq, irq_hw_number_t hwirq)
> -{
> - struct dpu_kms *dpu_kms;
> - int rc;
> -
> - if (!domain || !domain->host_data) {
> - DPU_ERROR("invalid parameters domain %d\n", domain != NULL);
> - return -EINVAL;
> - }
> - dpu_kms = domain->host_data;
> -
> - irq_set_chip_and_handler(irq, &dpu_core_irq_chip, handle_level_irq);
> - rc = irq_set_chip_data(irq, dpu_kms);
> -
> - return rc;
> -}
> -
> -static const struct irq_domain_ops dpu_core_irqdomain_ops = {
> - .map = dpu_core_irqdomain_map,
> - .xlate = irq_domain_xlate_onecell,
> -};
> -
> -int dpu_core_irq_domain_add(struct dpu_kms *dpu_kms)
> -{
> - struct device *dev;
> - struct irq_domain *domain;
> -
> - if (!dpu_kms->dev || !dpu_kms->dev->dev) {
> - pr_err("invalid device handles\n");
> - return -EINVAL;
> - }
> -
> - dev = dpu_kms->dev->dev;
> -
> - domain = irq_domain_add_linear(dev->of_node, 32,
> - &dpu_core_irqdomain_ops, dpu_kms);
> - if (!domain) {
> - pr_err("failed to add irq_domain\n");
> - return -EINVAL;
> - }
> -
> - dpu_kms->irq_controller.enabled_mask = 0;
> - dpu_kms->irq_controller.domain = domain;
> -
> - return 0;
> -}
> -
> -int dpu_core_irq_domain_fini(struct dpu_kms *dpu_kms)
> -{
> - if (dpu_kms->irq_controller.domain) {
> - irq_domain_remove(dpu_kms->irq_controller.domain);
> - dpu_kms->irq_controller.domain = NULL;
> - }
> - return 0;
> -}
> -
> irqreturn_t dpu_core_irq(struct dpu_kms *dpu_kms)
> {
> /*
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
> index 64a54fe..8fa59db 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
> @@ -38,20 +38,6 @@
> void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms);
>
> /**
> - * dpu_core_irq_domain_add - Add core IRQ domain for DPU
> - * @dpu_kms: DPU handle
> - * @return: none
> - */
> -int dpu_core_irq_domain_add(struct dpu_kms *dpu_kms);
> -
> -/**
> - * dpu_core_irq_domain_fini - uninstall core IRQ domain
> - * @dpu_kms: DPU handle
> - * @return: 0 if success; error code otherwise
> - */
> -int dpu_core_irq_domain_fini(struct dpu_kms *dpu_kms);
> -
> -/**
> * dpu_core_irq - core IRQ handler
> * @dpu_kms: DPU handle
> * @return: interrupt handling status
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> index 8e779c0..c5b370f 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> @@ -77,13 +77,6 @@
> .has_idle_pc = true,
> };
>
> -static struct dpu_mdss_base_cfg sdm845_mdss[] = {
> - {
> - .name = "mdss_0", .id = MDP_TOP,
> - .base = 0x0, .features = 0
> - },
> -};
> -
> static struct dpu_mdp_cfg sdm845_mdp[] = {
> {
> .name = "top_0", .id = MDP_TOP,
> @@ -550,8 +543,6 @@ void sdm845_cfg_init(struct dpu_mdss_cfg *dpu_cfg)
> {
> *dpu_cfg = (struct dpu_mdss_cfg){
> .caps = &sdm845_dpu_caps,
> - .mdss_count = ARRAY_SIZE(sdm845_mdss),
> - .mdss = sdm845_mdss,
> .mdp_count = ARRAY_SIZE(sdm845_mdp),
> .mdp = sdm845_mdp,
> .ctl_count = ARRAY_SIZE(sdm845_ctl),
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> index 39bec0a..7084643 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> @@ -492,10 +492,6 @@ struct dpu_wb_sub_blocks {
> u32 maxlinewidth;
> };
>
> -struct dpu_mdss_base_cfg {
> - DPU_HW_BLK_INFO;
> -};
> -
> /**
> * dpu_clk_ctrl_type - Defines top level clock control signals
> */
> @@ -875,9 +871,6 @@ struct dpu_mdss_cfg {
>
> const struct dpu_caps *caps;
>
> - u32 mdss_count;
> - struct dpu_mdss_base_cfg *mdss;
> -
> u32 mdp_count;
> struct dpu_mdp_cfg *mdp;
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> index 9767cc8..73f084c 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
> @@ -22,7 +22,6 @@
> * Register offsets in MDSS register file for the interrupt registers
> * w.r.t. to the MDSS base
> */
> -#define HW_INTR_STATUS 0x0010
> #define MDP_SSPP_TOP0_OFF 0x1000
> #define MDP_INTF_0_OFF 0x6B000
> #define MDP_INTF_1_OFF 0x6B800
> @@ -1017,17 +1016,6 @@ static int dpu_hw_intr_get_valid_interrupts(struct dpu_hw_intr *intr,
> return 0;
> }
>
> -static int dpu_hw_intr_get_interrupt_sources(struct dpu_hw_intr *intr,
> - uint32_t *sources)
> -{
> - if (!intr || !sources)
> - return -EINVAL;
> -
> - *sources = DPU_REG_READ(&intr->hw, HW_INTR_STATUS);
> -
> - return 0;
> -}
> -
> static void dpu_hw_intr_get_interrupt_statuses(struct dpu_hw_intr *intr)
> {
> int i;
> @@ -1162,7 +1150,6 @@ static void __setup_intr_ops(struct dpu_hw_intr_ops *ops)
> ops->clear_all_irqs = dpu_hw_intr_clear_irqs;
> ops->disable_all_irqs = dpu_hw_intr_disable_irqs;
> ops->get_valid_interrupts = dpu_hw_intr_get_valid_interrupts;
> - ops->get_interrupt_sources = dpu_hw_intr_get_interrupt_sources;
> ops->get_interrupt_statuses = dpu_hw_intr_get_interrupt_statuses;
> ops->clear_interrupt_status = dpu_hw_intr_clear_interrupt_status;
> ops->clear_intr_status_nolock = dpu_hw_intr_clear_intr_status_nolock;
> @@ -1170,23 +1157,18 @@ static void __setup_intr_ops(struct dpu_hw_intr_ops *ops)
> ops->get_intr_status_nolock = dpu_hw_intr_get_intr_status_nolock;
> }
>
> -static struct dpu_mdss_base_cfg *__intr_offset(struct dpu_mdss_cfg *m,
> +static void __intr_offset(struct dpu_mdss_cfg *m,
> void __iomem *addr, struct dpu_hw_blk_reg_map *hw)
> {
> - if (!m || !addr || !hw || m->mdp_count == 0)
> - return NULL;
> -
> hw->base_off = addr;
> - hw->blk_off = m->mdss[0].base;
> + hw->blk_off = m->mdp[0].base;
> hw->hwversion = m->hwversion;
> - return &m->mdss[0];
> }
>
> struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
> struct dpu_mdss_cfg *m)
> {
> struct dpu_hw_intr *intr;
> - struct dpu_mdss_base_cfg *cfg;
>
> if (!addr || !m)
> return ERR_PTR(-EINVAL);
> @@ -1195,11 +1177,7 @@ struct dpu_hw_intr *dpu_hw_intr_init(void __iomem *addr,
> if (!intr)
> return ERR_PTR(-ENOMEM);
>
> - cfg = __intr_offset(m, addr, &intr->hw);
> - if (!cfg) {
> - kfree(intr);
> - return ERR_PTR(-EINVAL);
> - }
> + __intr_offset(m, addr, &intr->hw);
> __setup_intr_ops(&intr->ops);
>
> intr->irq_idx_tbl_size = ARRAY_SIZE(dpu_irq_map);
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
> index 2f1a828..b52cdca 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
> @@ -242,17 +242,6 @@ struct dpu_hw_intr_ops {
> int (*get_valid_interrupts)(
> struct dpu_hw_intr *intr,
> uint32_t *mask);
> -
> - /**
> - * get_interrupt_sources - Gets the bitmask of the DPU interrupt
> - * source that are currently fired.
> - * @intr: HW interrupt handle
> - * @sources: Returning the DPU interrupt source status bit mask
> - * @return: 0 for success, otherwise failure
> - */
> - int (*get_interrupt_sources)(
> - struct dpu_hw_intr *intr,
> - uint32_t *sources);
> };
>
> /**
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c
> index 19c0929..d5e6ce0 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c
> @@ -19,56 +19,11 @@
> #include "dpu_irq.h"
> #include "dpu_core_irq.h"
>
> -static uint32_t g_dpu_irq_status;
> -
> irqreturn_t dpu_irq(struct msm_kms *kms)
> {
> struct dpu_kms *dpu_kms = to_dpu_kms(kms);
> - u32 interrupts;
> -
> - dpu_kms->hw_intr->ops.get_interrupt_sources(dpu_kms->hw_intr,
> - &interrupts);
> -
> - /* store irq status in case of irq-storm debugging */
> - g_dpu_irq_status = interrupts;
> -
> - /*
> - * Taking care of MDP interrupt
> - */
> - if (interrupts & IRQ_SOURCE_MDP) {
> - interrupts &= ~IRQ_SOURCE_MDP;
> - dpu_core_irq(dpu_kms);
> - }
> -
> - /*
> - * Routing all other interrupts to external drivers
> - */
> - while (interrupts) {
> - irq_hw_number_t hwirq = fls(interrupts) - 1;
> - unsigned int mapping;
> - int rc;
> -
> - mapping = irq_find_mapping(dpu_kms->irq_controller.domain,
> - hwirq);
> - if (mapping == 0) {
> - DPU_EVT32(hwirq, DPU_EVTLOG_ERROR);
> - goto error;
> - }
> -
> - rc = generic_handle_irq(mapping);
> - if (rc < 0) {
> - DPU_EVT32(hwirq, mapping, rc, DPU_EVTLOG_ERROR);
> - goto error;
> - }
> -
> - interrupts &= ~(1 << hwirq);
> - }
> -
> - return IRQ_HANDLED;
>
> -error:
> - /* bad situation, inform irq system, it may disable overall MDSS irq */
> - return IRQ_NONE;
> + return dpu_core_irq(dpu_kms);
> }
>
> void dpu_irq_preinstall(struct msm_kms *kms)
> @@ -108,5 +63,4 @@ void dpu_irq_uninstall(struct msm_kms *kms)
> }
>
> dpu_core_irq_uninstall(dpu_kms);
> - dpu_core_irq_domain_fini(dpu_kms);
> }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index 06adb38..e4ab753 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -636,10 +636,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
> priv = dev->dev_private;
> catalog = dpu_kms->catalog;
>
> - ret = dpu_core_irq_domain_add(dpu_kms);
> - if (ret)
> - goto fail_irq;
> -
> /*
> * Create encoder and query display drivers to create
> * bridges and connectors
> @@ -716,8 +712,6 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
> return 0;
> fail:
> _dpu_kms_drm_obj_destroy(dpu_kms);
> -fail_irq:
> - dpu_core_irq_domain_fini(dpu_kms);
> return ret;
> }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> index 5b0c081..a1c0910 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> @@ -184,8 +184,6 @@ struct dpu_kms {
> struct regulator *mmagic;
> struct regulator *venus;
>
> - struct dpu_irq_controller irq_controller;
> -
> struct dpu_hw_intr *hw_intr;
> struct dpu_irq irq_obj;
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> new file mode 100644
> index 0000000..ce680ea
> --- /dev/null
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> @@ -0,0 +1,254 @@
> +/*
> + * SPDX-License-Identifier: GPL-2.0
> + * Copyright (c) 2018, The Linux Foundation
> + */
> +
> +#include "dpu_kms.h"
> +
> +#define to_dpu_mdss(x) container_of(x, struct dpu_mdss, base)
> +
> +#define HW_INTR_STATUS 0x0010
> +
> +struct dpu_mdss {
> + struct msm_mdss base;
> + void __iomem *mmio;
> + unsigned long mmio_len;
> + u32 hwversion;
> + struct dss_module_power mp;
> + struct dpu_irq_controller irq_controller;
> +};
> +
> +static irqreturn_t dpu_mdss_irq(int irq, void *arg)
> +{
> + struct dpu_mdss *dpu_mdss = arg;
> + u32 interrupts;
> +
> + interrupts = readl_relaxed(dpu_mdss->mmio + HW_INTR_STATUS);
> +
> + while (interrupts) {
> + irq_hw_number_t hwirq = fls(interrupts) - 1;
> + unsigned int mapping;
> + int rc;
> +
> + mapping = irq_find_mapping(dpu_mdss->irq_controller.domain,
> + hwirq);
> + if (mapping == 0) {
> + DPU_EVT32(hwirq, DPU_EVTLOG_ERROR);
> + return IRQ_NONE;
> + }
> +
> + rc = generic_handle_irq(mapping);
> + if (rc < 0) {
> + DPU_EVT32(hwirq, mapping, rc, DPU_EVTLOG_ERROR);
> + return IRQ_NONE;
> + }
> +
> + interrupts &= ~(1 << hwirq);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static void dpu_mdss_irq_mask(struct irq_data *irqd)
> +{
> + struct dpu_mdss *dpu_mdss = irq_data_get_irq_chip_data(irqd);
> +
> + /* memory barrier */
> + smp_mb__before_atomic();
> + clear_bit(irqd->hwirq, &dpu_mdss->irq_controller.enabled_mask);
> + /* memory barrier */
> + smp_mb__after_atomic();
> +}
> +
> +static void dpu_mdss_irq_unmask(struct irq_data *irqd)
> +{
> + struct dpu_mdss *dpu_mdss = irq_data_get_irq_chip_data(irqd);
> +
> + /* memory barrier */
> + smp_mb__before_atomic();
> + set_bit(irqd->hwirq, &dpu_mdss->irq_controller.enabled_mask);
> + /* memory barrier */
> + smp_mb__after_atomic();
> +}
> +
> +static struct irq_chip dpu_mdss_irq_chip = {
> + .name = "dpu_mdss",
> + .irq_mask = dpu_mdss_irq_mask,
> + .irq_unmask = dpu_mdss_irq_unmask,
> +};
> +
> +static int dpu_mdss_irqdomain_map(struct irq_domain *domain,
> + unsigned int irq, irq_hw_number_t hwirq)
> +{
> + struct dpu_mdss *dpu_mdss = domain->host_data;
> + int ret;
> +
> + irq_set_chip_and_handler(irq, &dpu_mdss_irq_chip, handle_level_irq);
> + ret = irq_set_chip_data(irq, dpu_mdss);
> +
> + return ret;
> +}
> +
> +static const struct irq_domain_ops dpu_mdss_irqdomain_ops = {
> + .map = dpu_mdss_irqdomain_map,
> + .xlate = irq_domain_xlate_onecell,
> +};
> +
> +static int _dpu_mdss_irq_domain_add(struct dpu_mdss *dpu_mdss)
> +{
> + struct device *dev;
> + struct irq_domain *domain;
> +
> + dev = dpu_mdss->base.dev->dev;
> +
> + domain = irq_domain_add_linear(dev->of_node, 32,
> + &dpu_mdss_irqdomain_ops, dpu_mdss);
> + if (!domain) {
> + DPU_ERROR("failed to add irq_domain\n");
> + return -EINVAL;
> + }
> +
> + dpu_mdss->irq_controller.enabled_mask = 0;
> + dpu_mdss->irq_controller.domain = domain;
> +
> + return 0;
> +}
> +
> +int _dpu_mdss_irq_domain_fini(struct dpu_mdss *dpu_mdss)
> +{
> + if (dpu_mdss->irq_controller.domain) {
> + irq_domain_remove(dpu_mdss->irq_controller.domain);
> + dpu_mdss->irq_controller.domain = NULL;
> + }
> + return 0;
> +}
> +static int dpu_mdss_enable(struct msm_mdss *mdss)
> +{
> + struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss);
> + struct dss_module_power *mp = &dpu_mdss->mp;
> + int ret;
> +
> + ret = msm_dss_enable_clk(mp->clk_config, mp->num_clk, true);
> + if (ret)
> + DPU_ERROR("clock enable failed, ret:%d\n", ret);
> +
> + return ret;
> +}
> +
> +static int dpu_mdss_disable(struct msm_mdss *mdss)
> +{
> + struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss);
> + struct dss_module_power *mp = &dpu_mdss->mp;
> + int ret;
> +
> + ret = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false);
> + if (ret)
> + DPU_ERROR("clock disable failed, ret:%d\n", ret);
> +
> + return ret;
> +}
> +
> +static void dpu_mdss_destroy(struct drm_device *dev)
> +{
> + struct platform_device *pdev = to_platform_device(dev->dev);
> + struct msm_drm_private *priv = dev->dev_private;
> + struct dpu_mdss *dpu_mdss = to_dpu_mdss(priv->mdss);
> + struct dss_module_power *mp = &dpu_mdss->mp;
> +
> + _dpu_mdss_irq_domain_fini(dpu_mdss);
> +
> + msm_dss_put_clk(mp->clk_config, mp->num_clk);
> + devm_kfree(&pdev->dev, mp->clk_config);
> +
> + if (dpu_mdss->mmio)
> + msm_iounmap(pdev, dpu_mdss->mmio);
> + dpu_mdss->mmio = NULL;
> +
> + pm_runtime_disable(dev->dev);
> + priv->mdss = NULL;
> +}
> +
> +static const struct msm_mdss_funcs mdss_funcs = {
> + .enable = dpu_mdss_enable,
> + .disable = dpu_mdss_disable,
> + .destroy = dpu_mdss_destroy,
> +};
> +
> +int dpu_mdss_init(struct drm_device *dev)
> +{
> + struct platform_device *pdev = to_platform_device(dev->dev);
> + struct msm_drm_private *priv = dev->dev_private;
> + struct dpu_mdss *dpu_mdss;
> + struct dss_module_power *mp;
> + int ret = 0;
> +
> + dpu_mdss = devm_kzalloc(dev->dev, sizeof(*dpu_mdss), GFP_KERNEL);
> + if (!dpu_mdss)
> + return -ENOMEM;
> +
> + dpu_mdss->mmio = msm_ioremap(pdev, "mdss_phys", "mdss_phys");
> + if (IS_ERR(dpu_mdss->mmio)) {
> + ret = PTR_ERR(dpu_mdss->mmio);
> + DPU_ERROR("mdss register memory map failed: %d\n", ret);
> + dpu_mdss->mmio = NULL;
> + return ret;
> + }
> + DRM_DEBUG("mapped mdss address space @%pK\n", dpu_mdss->mmio);
> + dpu_mdss->mmio_len = msm_iomap_size(pdev, "mdss_phys");
> +
> + mp = &dpu_mdss->mp;
> + ret = msm_dss_parse_clock(pdev, mp);
> + if (ret) {
> + DPU_ERROR("failed to parse clocks, ret=%d\n", ret);
> + goto clk_parse_err;
> + }
> +
> + ret = msm_dss_get_clk(&pdev->dev, mp->clk_config, mp->num_clk);
> + if (ret) {
> + DPU_ERROR("failed to get clocks, ret=%d\n", ret);
> + goto clk_get_error;
> + }
> +
> + ret = msm_dss_clk_set_rate(mp->clk_config, mp->num_clk);
> + if (ret) {
> + DPU_ERROR("failed to set clock rate, ret=%d\n", ret);
> + goto clk_rate_error;
> + }
> +
> + dpu_mdss->base.dev = dev;
> + dpu_mdss->base.funcs = &mdss_funcs;
> +
> + ret = _dpu_mdss_irq_domain_add(dpu_mdss);
> + if (ret)
> + goto irq_domain_error;
> +
> + ret = devm_request_irq(dev->dev, platform_get_irq(pdev, 0),
> + dpu_mdss_irq, 0, "dpu_mdss_isr", dpu_mdss);
> + if (ret) {
> + DPU_ERROR("failed to init irq: %d\n", ret);
> + goto irq_error;
> + }
> +
> + pm_runtime_enable(dev->dev);
> +
> + pm_runtime_get_sync(dev->dev);
> + dpu_mdss->hwversion = readl_relaxed(dpu_mdss->mmio);
> + pm_runtime_put_sync(dev->dev);
> +
> + priv->mdss = &dpu_mdss->base;
> +
> + return ret;
> +
> +irq_error:
> + _dpu_mdss_irq_domain_fini(dpu_mdss);
> +irq_domain_error:
> +clk_rate_error:
> + msm_dss_put_clk(mp->clk_config, mp->num_clk);
> +clk_get_error:
> + devm_kfree(&pdev->dev, mp->clk_config);
> +clk_parse_err:
> + if (dpu_mdss->mmio)
> + msm_iounmap(pdev, dpu_mdss->mmio);
> + dpu_mdss->mmio = NULL;
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/msm/dpu_io_util.c b/drivers/gpu/drm/msm/dpu_io_util.c
> index a18bc99..c44f33f 100644
> --- a/drivers/gpu/drm/msm/dpu_io_util.c
> +++ b/drivers/gpu/drm/msm/dpu_io_util.c
> @@ -448,6 +448,63 @@ int msm_dss_enable_clk(struct dss_clk *clk_arry, int num_clk, int enable)
> } /* msm_dss_enable_clk */
> EXPORT_SYMBOL(msm_dss_enable_clk);
>
> +int msm_dss_parse_clock(struct platform_device *pdev,
> + struct dss_module_power *mp)
> +{
> + u32 i, rc = 0;
> + const char *clock_name;
> + u32 rate = 0, max_rate = 0;
> + int num_clk = 0;
> +
> + if (!pdev || !mp)
> + return -EINVAL;
> +
> + mp->num_clk = 0;
> + num_clk = of_property_count_strings(pdev->dev.of_node, "clock-names");
> + if (num_clk <= 0) {
> + pr_debug("clocks are not defined\n");
> + return 0;
> + }
> +
> + mp->clk_config = devm_kzalloc(&pdev->dev,
> + sizeof(struct dss_clk) * num_clk,
> + GFP_KERNEL);
> + if (!mp->clk_config)
> + return -ENOMEM;
> +
> + for (i = 0; i < num_clk; i++) {
> + rc = of_property_read_string_index(pdev->dev.of_node,
> + "clock-names", i,
> + &clock_name);
> + if (rc)
> + break;
> + strlcpy(mp->clk_config[i].clk_name, clock_name,
> + sizeof(mp->clk_config[i].clk_name));
> +
> + rc = of_property_read_u32_index(pdev->dev.of_node,
> + "clock-rate", i,
> + &rate);
> + if (rc)
> + break;
> + mp->clk_config[i].rate = rate;
> + if (!mp->clk_config[i].rate)
> + mp->clk_config[i].type = DSS_CLK_AHB;
> + else
> + mp->clk_config[i].type = DSS_CLK_PCLK;
> +
> + rc = of_property_read_u32_index(pdev->dev.of_node,
> + "clock-max-rate", i,
> + &max_rate);
> + if (rc)
> + break;
> + mp->clk_config[i].max_rate = max_rate;
> + }
> +
> + if (!rc)
> + mp->num_clk = num_clk;
> +
> + return rc;
> +}
>
> int dpu_i2c_byte_read(struct i2c_client *client, uint8_t slave_addr,
> uint8_t reg_offset, uint8_t *read_buf)
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index 5d8f1b6..a0e73ea 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -503,7 +503,18 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
> ddev->dev_private = priv;
> priv->dev = ddev;
>
> - ret = mdp5_mdss_init(ddev);
> + switch (get_mdp_ver(pdev)) {
> + case KMS_MDP5:
> + ret = mdp5_mdss_init(ddev);
> + break;
> + case KMS_DPU:
> + ret = dpu_mdss_init(ddev);
> + break;
> + default:
> + ret = 0;
> + break;
> + }
> +
> if (ret)
> goto mdss_init_fail;
>
> @@ -1539,12 +1550,13 @@ static int add_display_components(struct device *dev,
> int ret;
>
> /*
> - * MDP5 based devices don't have a flat hierarchy. There is a top level
> - * parent: MDSS, and children: MDP5, DSI, HDMI, eDP etc. Populate the
> - * children devices, find the MDP5 node, and then add the interfaces
> - * to our components list.
> + * MDP5/DPU based devices don't have a flat hierarchy. There is a top
> + * level parent: MDSS, and children: MDP5/DPU, DSI, HDMI, eDP etc.
> + * Populate the children devices, find the MDP5/DPU node, and then add
> + * the interfaces to our components list.
> */
> - if (of_device_is_compatible(dev->of_node, "qcom,mdss")) {
> + if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
> + of_device_is_compatible(dev->of_node, "qcom,dpu-mdss")) {
> ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
> if (ret) {
> dev_err(dev, "failed to populate children devices\n");
> @@ -1686,7 +1698,7 @@ static int msm_pdev_remove(struct platform_device *pdev)
> { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 },
> { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
> #ifdef CONFIG_DRM_MSM_DPU
> - { .compatible = "qcom,dpu-kms", .data = (void *)KMS_DPU },
> + { .compatible = "qcom,dpu-mdss", .data = (void *)KMS_DPU },
> #endif
> {}
> };
> diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
> index 90a2521..e8e5e73 100644
> --- a/drivers/gpu/drm/msm/msm_drv.h
> +++ b/drivers/gpu/drm/msm/msm_drv.h
> @@ -381,7 +381,7 @@ struct msm_drm_private {
> /* subordinate devices, if present: */
> struct platform_device *gpu_pdev;
>
> - /* top level MDSS wrapper device (for MDP5 only) */
> + /* top level MDSS wrapper device (for MDP5/DPU only) */
> struct msm_mdss *mdss;
>
> /* possibly this should be in the kms component, but it is
> diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
> index 9a7bc7d..5e1de85 100644
> --- a/drivers/gpu/drm/msm/msm_kms.h
> +++ b/drivers/gpu/drm/msm/msm_kms.h
> @@ -144,6 +144,7 @@ struct msm_mdss {
> };
>
> int mdp5_mdss_init(struct drm_device *dev);
> +int dpu_mdss_init(struct drm_device *dev);
>
> /**
> * Mode Set Utility Functions
> diff --git a/include/linux/dpu_io_util.h b/include/linux/dpu_io_util.h
> index 7c73899..45e606f 100644
> --- a/include/linux/dpu_io_util.h
> +++ b/include/linux/dpu_io_util.h
> @@ -104,6 +104,8 @@ int msm_dss_config_vreg(struct device *dev, struct dss_vreg *in_vreg,
> void msm_dss_put_clk(struct dss_clk *clk_arry, int num_clk);
> int msm_dss_clk_set_rate(struct dss_clk *clk_arry, int num_clk);
> int msm_dss_enable_clk(struct dss_clk *clk_arry, int num_clk, int enable);
> +int msm_dss_parse_clock(struct platform_device *pdev,
> + struct dss_module_power *mp);
>
> int dpu_i2c_byte_read(struct i2c_client *client, uint8_t slave_addr,
> uint8_t reg_offset, uint8_t *read_buf);
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
> _______________________________________________
> Freedreno mailing list
> Freedreno@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/freedreno
--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
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