From: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
To: dri-devel@lists.freedesktop.org, anitha.chrisanthus@intel.com,
bob.j.paauwe@intel.com, edmund.j.dea@intel.com
Cc: daniel.vetter@intel.com, intel-gfx@lists.freedesktop.org,
rodrigo.vivi@intel.com
Subject: [PATCH v2 18/59] drm/kmb: Part8 of Mipi Tx Initialization
Date: Tue, 14 Jul 2020 13:57:04 -0700 [thread overview]
Message-ID: <1594760265-11618-19-git-send-email-anitha.chrisanthus@intel.com> (raw)
In-Reply-To: <1594760265-11618-1-git-send-email-anitha.chrisanthus@intel.com>
This initializes the interrupts for DSI. This is the final part of mipi
DSI initialization.
Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
---
drivers/gpu/drm/kmb/kmb_drv.c | 1 +
drivers/gpu/drm/kmb/kmb_drv.h | 30 +++++++++++-----
drivers/gpu/drm/kmb/kmb_dsi.c | 46 ++++++++++++++++++++++++
drivers/gpu/drm/kmb/kmb_dsi.h | 13 +++++++
drivers/gpu/drm/kmb/kmb_regs.h | 81 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 163 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c
index 224a7f8..19f78ba 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.c
+++ b/drivers/gpu/drm/kmb/kmb_drv.c
@@ -58,6 +58,7 @@ static int kmb_load(struct drm_device *drm, unsigned long flags)
if (ret && ret != -ENODEV)
return ret;
+ spin_lock_init(&lcd->irq_lock);
ret = kmb_setup_crtc(drm);
if (ret < 0) {
DRM_ERROR("failed to create crtc\n");
diff --git a/drivers/gpu/drm/kmb/kmb_drv.h b/drivers/gpu/drm/kmb/kmb_drv.h
index 3996c84..14bdfc8 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.h
+++ b/drivers/gpu/drm/kmb/kmb_drv.h
@@ -12,14 +12,15 @@
#define KMB_MAX_HEIGHT 16384 /*max height in pixels */
struct kmb_drm_private {
- struct drm_device drm;
- void __iomem *mmio;
- unsigned char n_layers;
- struct clk *clk;
- struct drm_fbdev_cma *fbdev;
- struct drm_crtc crtc;
- struct kmb_plane *plane;
- struct drm_atomic_state *state;
+ struct drm_device drm;
+ void __iomem *mmio;
+ unsigned char n_layers;
+ struct clk *clk;
+ struct drm_fbdev_cma *fbdev;
+ struct drm_crtc crtc;
+ struct kmb_plane *plane;
+ struct drm_atomic_state *state;
+ spinlock_t irq_lock;
};
static inline struct kmb_drm_private *to_kmb(const struct drm_device *dev)
@@ -111,6 +112,19 @@ static inline void kmb_clr_bit_mipi(unsigned int reg, u32 offset)
kmb_write_mipi(reg, reg_val & (~(1 << offset)));
}
+static inline void kmb_set_bitmask_mipi(unsigned int reg, u32 mask)
+{
+ u32 reg_val = kmb_read_mipi(reg);
+
+ kmb_write_mipi(reg, (reg_val | mask));
+}
+
+static inline void kmb_clr_bitmask_mipi(unsigned int reg, u32 mask)
+{
+ u32 reg_val = kmb_read_mipi(reg);
+
+ kmb_write_mipi(reg, (reg_val & (~mask)));
+}
int kmb_setup_crtc(struct drm_device *dev);
void kmb_set_scanout(struct kmb_drm_private *lcd);
#endif /* __KMB_DRV_H__ */
diff --git a/drivers/gpu/drm/kmb/kmb_dsi.c b/drivers/gpu/drm/kmb/kmb_dsi.c
index f8ddb87..47456b2 100644
--- a/drivers/gpu/drm/kmb/kmb_dsi.c
+++ b/drivers/gpu/drm/kmb/kmb_dsi.c
@@ -5,6 +5,7 @@
#include <linux/gpio/consumer.h>
#include <linux/slab.h>
+#include <linux/spinlock.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_connector.h>
#include <drm/drm_crtc.h>
@@ -188,6 +189,11 @@ static mipi_hs_freq_range_cfg
{.default_bit_rate_mbps = 2500, .hsfreqrange_code = 0x49}
};
+union mipi_irq_cfg int_cfg = {
+ .irq_cfg.frame_done = 1,
+ .irq_cfg.ctrl_error = 1,
+};
+
static enum drm_mode_status
kmb_dsi_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
@@ -1174,6 +1180,43 @@ static u32 mipi_tx_init_dphy(struct mipi_ctrl_cfg *cfg)
return 0;
}
+static void mipi_tx_init_irqs(union mipi_irq_cfg *cfg,
+ struct kmb_drm_private *dev_priv,
+ struct mipi_tx_ctrl_cfg *tx_ctrl_cfg)
+{
+ unsigned long irqflags;
+ uint8_t vc;
+
+ /* clear all interrupts first */
+ /*local interrupts */
+ SET_MIPI_TX_HS_IRQ_CLEAR(MIPI_CTRL6, MIPI_TX_HS_IRQ_ALL);
+ /*global interrupts */
+ SET_MIPI_CTRL_IRQ_CLEAR0(MIPI_CTRL6, MIPI_HS_IRQ);
+ SET_MIPI_CTRL_IRQ_CLEAR0(MIPI_CTRL6, MIPI_DHY_ERR_IRQ);
+ SET_MIPI_CTRL_IRQ_CLEAR1(MIPI_CTRL6, MIPI_HS_RX_EVENT_IRQ);
+
+ /*enable interrupts */
+ spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+ for (vc = 0; vc < MIPI_CTRL_VIRTUAL_CHANNELS; vc++) {
+ if (tx_ctrl_cfg->frames[vc] == NULL)
+ continue;
+ /*enable FRAME_DONE interrupt if VC is configured */
+ SET_HS_IRQ_ENABLE(MIPI_CTRL6,
+ MIPI_TX_HS_IRQ_FRAME_DONE_0 << vc);
+ break; /*only one vc for LCD interface */
+ }
+
+ /*enable user enabled interrupts */
+ if (cfg->irq_cfg.dphy_error)
+ SET_MIPI_CTRL_IRQ_ENABLE0(MIPI_CTRL6, MIPI_DHY_ERR_IRQ);
+ if (cfg->irq_cfg.line_compare)
+ SET_HS_IRQ_ENABLE(MIPI_CTRL6, MIPI_TX_HS_IRQ_LINE_COMPARE);
+ if (cfg->irq_cfg.ctrl_error)
+ SET_HS_IRQ_ENABLE(MIPI_CTRL6, MIPI_TX_HS_IRQ_ERROR);
+
+ spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+}
+
void kmb_dsi_init(struct drm_device *dev)
{
struct kmb_dsi *kmb_dsi;
@@ -1219,4 +1262,7 @@ void kmb_dsi_init(struct drm_device *dev)
/*d-phy initialization */
mipi_tx_init_dphy(&mipi_tx_init_cfg);
+
+ /* irq initialization */
+ mipi_tx_init_irqs(&int_cfg, dev_priv, &mipi_tx_init_cfg.tx_ctrl_cfg);
}
diff --git a/drivers/gpu/drm/kmb/kmb_dsi.h b/drivers/gpu/drm/kmb/kmb_dsi.h
index 7db7f58..810c5c7 100644
--- a/drivers/gpu/drm/kmb/kmb_dsi.h
+++ b/drivers/gpu/drm/kmb/kmb_dsi.h
@@ -295,6 +295,19 @@ struct mipi_ctrl_cfg {
uint32_t data_if; /*MIPI_IF_DMA or MIPI_IF_PARALLEL */
struct mipi_tx_ctrl_cfg tx_ctrl_cfg;
};
+
+/*structure for storing user specified interrupts that are enabled */
+union mipi_irq_cfg {
+ uint8_t value;
+ struct {
+ uint8_t line_compare : 1;
+ uint8_t dma_event : 1;
+ uint8_t frame_done : 1;
+ uint8_t ctrl_error : 1;
+ uint8_t dphy_error : 1;
+ } irq_cfg;
+};
+
void kmb_dsi_init(struct drm_device *dev);
void kmb_plane_destroy(struct drm_plane *plane);
diff --git a/drivers/gpu/drm/kmb/kmb_regs.h b/drivers/gpu/drm/kmb/kmb_regs.h
index eec434e7..5d08ee4 100644
--- a/drivers/gpu/drm/kmb/kmb_regs.h
+++ b/drivers/gpu/drm/kmb/kmb_regs.h
@@ -501,6 +501,87 @@
kmb_write_bits_mipi(MIPI_TXm_HS_MC_FIFO_RTHRESHOLDn(ctrl, vc/2), \
(vc % 2)*16, 16, th)
+/* MIPI IRQ */
+#define MIPI_CTRL_IRQ_STATUS0 (0x00)
+#define MIPI_DHY_ERR_IRQ 1
+#define MIPI_HS_IRQ 13
+#define MIPI_LP_EVENT_IRQ 25
+#define MIPI_CTRL_IRQ_STATUS1 (0x04)
+#define MIPI_HS_RX_EVENT_IRQ 0
+#define MIPI_CTRL_IRQ_ENABLE0 (0x08)
+#define SET_MIPI_CTRL_IRQ_ENABLE0(M, N) \
+ kmb_set_bit_mipi(MIPI_CTRL_IRQ_ENABLE0, M+N)
+#define MIPI_CTRL_IRQ_ENABLE1 (0x0c)
+#define MIPI_CTRL_IRQ_CLEAR0 (0x010)
+#define SET_MIPI_CTRL_IRQ_CLEAR0(M, N) \
+ kmb_set_bit_mipi(MIPI_CTRL_IRQ_CLEAR0, M+N)
+#define MIPI_CTRL_IRQ_CLEAR1 (0x014)
+#define SET_MIPI_CTRL_IRQ_CLEAR1(M, N) \
+ kmb_set_bit_mipi(MIPI_CTRL_IRQ_CLEAR1, M+N)
+#define MIPI_TX_HS_IRQ_STATUS (0x01c)
+#define MIPI_TX_HS_IRQ_STATUSm(M) \
+ (MIPI_TX_HS_IRQ_STATUS + HS_OFFSET(M))
+#define MIPI_TX_HS_IRQ_LINE_COMPARE (1<<1)
+#define MIPI_TX_HS_IRQ_FRAME_DONE_0 (1<<2)
+#define MIPI_TX_HS_IRQ_FRAME_DONE_1 (1<<3)
+#define MIPI_TX_HS_IRQ_FRAME_DONE_2 (1<<4)
+#define MIPI_TX_HS_IRQ_FRAME_DONE_3 (1<<5)
+#define MIPI_TX_HS_IRQ_DMA_DONE_0 (1<<6)
+#define MIPI_TX_HS_IRQ_DMA_IDLE_0 (1<<7)
+#define MIPI_TX_HS_IRQ_DMA_DONE_1 (1<<8)
+#define MIPI_TX_HS_IRQ_DMA_IDLE_1 (1<<9)
+#define MIPI_TX_HS_IRQ_DMA_DONE_2 (1<<10)
+#define MIPI_TX_HS_IRQ_DMA_IDLE_2 (1<<11)
+#define MIPI_TX_HS_IRQ_DMA_DONE_3 (1<<12)
+#define MIPI_TX_HS_IRQ_DMA_IDLE_3 (1<<13)
+#define MIPI_TX_HS_IRQ_MC_FIFO_UNDERFLOW (1<<14)
+#define MIPI_TX_HS_IRQ_MC_FIFO_OVERFLOW (1<<15)
+#define MIPI_TX_HS_IRQ_LLP_FIFO_EMPTY (1<<16)
+#define MIPI_TX_HS_IRQ_LLP_REQUEST_QUEUE_FULL (1<<17)
+#define MIPI_TX_HS_IRQ_LLP_REQUEST_QUEUE_ERROR (1<<18)
+#define MIPI_TX_HS_IRQ_LLP_WORD_COUNT_ERROR (1<<20)
+#define MIPI_TX_HS_IRQ_FRAME_DONE \
+ (MIPI_TX_HS_IRQ_FRAME_DONE_0 | \
+ MIPI_TX_HS_IRQ_FRAME_DONE_1 | \
+ MIPI_TX_HS_IRQ_FRAME_DONE_2 | \
+ MIPI_TX_HS_IRQ_FRAME_DONE_3)
+
+#define MIPI_TX_HS_IRQ_DMA_DONE \
+ (MIPI_TX_HS_IRQ_DMA_DONE_0 | \
+ MIPI_TX_HS_IRQ_DMA_DONE_1 | \
+ MIPI_TX_HS_IRQ_DMA_DONE_2 | \
+ MIPI_TX_HS_IRQ_DMA_DONE_3)
+
+#define MIPI_TX_HS_IRQ_DMA_IDLE \
+ (MIPI_TX_HS_IRQ_DMA_IDLE_0 | \
+ MIPI_TX_HS_IRQ_DMA_IDLE_1 | \
+ MIPI_TX_HS_IRQ_DMA_IDLE_2 | \
+ MIPI_TX_HS_IRQ_DMA_IDLE_3)
+
+#define MIPI_TX_HS_IRQ_ERROR \
+ (MIPI_TX_HS_IRQ_MC_FIFO_UNDERFLOW | \
+ MIPI_TX_HS_IRQ_MC_FIFO_OVERFLOW | \
+ MIPI_TX_HS_IRQ_LLP_FIFO_EMPTY | \
+ MIPI_TX_HS_IRQ_LLP_REQUEST_QUEUE_FULL | \
+ MIPI_TX_HS_IRQ_LLP_REQUEST_QUEUE_ERROR | \
+ MIPI_TX_HS_IRQ_LLP_WORD_COUNT_ERROR)
+
+#define MIPI_TX_HS_IRQ_ALL \
+ (MIPI_TX_HS_IRQ_FRAME_DONE | \
+ MIPI_TX_HS_IRQ_DMA_DONE | \
+ MIPI_TX_HS_IRQ_DMA_IDLE | \
+ MIPI_TX_HS_IRQ_LINE_COMPARE | \
+ MIPI_TX_HS_IRQ_ERROR)
+
+#define MIPI_TX_HS_IRQ_ENABLE (0x020)
+#define SET_HS_IRQ_ENABLE(M, val) \
+ kmb_set_bitmask_mipi(MIPI_TX_HS_IRQ_ENABLE \
+ + HS_OFFSET(M), val)
+#define MIPI_TX_HS_IRQ_CLEAR (0x024)
+#define SET_MIPI_TX_HS_IRQ_CLEAR(M, val) \
+ kmb_set_bitmask_mipi(MIPI_TX_HS_IRQ_CLEAR \
+ + HS_OFFSET(M), val)
+
/* D-PHY regs */
#define DPHY_ENABLE (0x100)
#define DPHY_INIT_CTRL0 (0x104)
--
2.7.4
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next prev parent reply other threads:[~2020-07-14 20:59 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 20:56 [PATCH v2 00/59] Add support for KeemBay DRM driver Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 01/59] drm/kmb: Add support for KeemBay Display Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 02/59] drm/kmb: Added id to kmb_plane Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 03/59] drm/kmb: Set correct values in the LAYERn_CFG register Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 04/59] drm/kmb: Use biwise operators for register definitions Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 05/59] drm/kmb: Updated kmb_plane_atomic_check Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 06/59] drm/kmb: Initial check-in for Mipi DSI Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 07/59] drm/kmb: Set OUT_FORMAT_CFG register Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 08/59] drm/kmb: Added mipi_dsi_host initialization Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 09/59] drm/kmb: Part 1 of Mipi Tx Initialization Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 10/59] drm/kmb: Part 2 " Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 11/59] drm/kmb: Use correct mmio offset from data book Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 12/59] drm/kmb: Part3 of Mipi Tx initialization Anitha Chrisanthus
2020-07-14 20:56 ` [PATCH v2 13/59] drm/kmb: Part4 of Mipi Tx Initialization Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 14/59] drm/kmb: Correct address offsets for mipi registers Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 15/59] drm/kmb: Part5 of Mipi Tx Intitialization Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 16/59] drm/kmb: Part6 of Mipi Tx Initialization Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 17/59] drm/kmb: Part7 " Anitha Chrisanthus
2020-07-14 20:57 ` Anitha Chrisanthus [this message]
2020-07-14 20:57 ` [PATCH v2 19/59] drm/kmb: Added ioremap/iounmap for register access Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 20/59] drm/kmb: Register IRQ for LCD Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 21/59] drm/kmb: IRQ handlers for LCD and mipi dsi Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 22/59] drm/kmb: Set hardcoded values to LCD_VSYNC_START Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 23/59] drm/kmb: Additional register programming to update_plane Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 24/59] drm/kmb: Add ADV7535 bridge Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 25/59] drm/kmb: Display clock enable/disable Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 26/59] drm/kmb: rebase to newer kernel version Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 27/59] drm/kmb: minor name change to match device tree Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 28/59] drm/kmb: Changed MMIO size Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 29/59] drm/kmb: Defer Probe Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 30/59] drm/kmb: call bridge init in the very beginning Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 31/59] drm/kmb: Cleanup probe functions Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 32/59] drm/kmb: Revert dsi_host back to a static variable Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 33/59] drm/kmb: Initialize clocks for clk_msscam, clk_mipi_ecfg, & clk_mipi_cfg Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 34/59] drm/kmb: Enable MSS_CAM_CLK_CTRL for LCD and MIPI Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 35/59] drm/kmb: Remove declaration of irq_lcd/irq_mipi Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 36/59] drm/kmb: Enable MIPI TX HS Test Pattern Generation Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 37/59] drm/kmb: Set MSS_CAM_RSTN_CTRL along with enable Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 38/59] drm/kmb: Mipi DPHY initialization changes Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 39/59] drm/kmb: Fixed driver unload Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 40/59] drm/kmb: Added LCD_TEST config Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 41/59] drm/kmb: Changes for LCD to Mipi Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 42/59] drm/kmb: Update LCD programming to match MIPI Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 43/59] drm/kmb: Changed name of driver to kmb-drm Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 44/59] drm/kmb: Mipi settings from input timings Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 45/59] drm/kmb: Enable LCD interrupts Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 46/59] drm/kmb: Enable LCD interrupts during modeset Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 47/59] drm/kmb: Don’t inadvertantly disable LCD controller Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 48/59] drm/kmb: SWAP R and B LCD Layer order Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 49/59] drm/kmb: Disable ping pong mode Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 50/59] drm/kmb: Do the layer initializations only once Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 51/59] drm/kmb: Write to LCD_LAYERn_CFG " Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 52/59] drm/kmb: Cleaned up code Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 53/59] drm/kmb: disable the LCD layer in EOF irq handler Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 54/59] drm/kmb: Initialize uninitialized variables Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 55/59] drm/kmb: Added useful messages in LCD ISR Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 56/59] kmb/drm: Prune unsupported modes Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 57/59] drm/kmb: workaround for dma undeflow issue Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 58/59] drm/kmb: Get System Clock from SCMI Anitha Chrisanthus
2020-07-14 20:57 ` [PATCH v2 59/59] drm/kmb: work around for planar formats Anitha Chrisanthus
2020-07-15 15:05 ` [Intel-gfx] [PATCH v2 00/59] Add support for KeemBay DRM driver Daniel Vetter
2020-07-15 15:14 ` Daniel Vetter
2020-07-15 17:06 ` Sam Ravnborg
2020-07-15 18:38 ` Chrisanthus, Anitha
2020-07-15 17:01 ` Sam Ravnborg
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