diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-csid.c | 139 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-csid.h | 2 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-csiphy.c | 113 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-csiphy.h | 2 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-ispif.c | 23 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-ispif.h | 4 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-vfe.c | 289 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss-vfe.h | 2 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss.c | 67 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/camss-8x16/camss.h | 15 |
10 files changed, 547 insertions, 109 deletions
diff --git a/drivers/media/platform/qcom/camss-8x16/camss-csid.c b/drivers/media/platform/qcom/camss-8x16/camss-csid.c index 5c09e83e4a2b..792c14a9f59c 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-csid.c +++ b/drivers/media/platform/qcom/camss-8x16/camss-csid.c @@ -69,6 +69,7 @@ struct csid_fmts { u8 data_type; u8 decode_format; u8 bpp; + u8 spp; /* bus samples per pixel */ }; static const struct csid_fmts csid_input_fmts[] = { @@ -76,97 +77,113 @@ static const struct csid_fmts csid_input_fmts[] = { MEDIA_BUS_FMT_UYVY8_2X8, DATA_TYPE_YUV422_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, - 16, + 8, + 2, }, { MEDIA_BUS_FMT_VYUY8_2X8, DATA_TYPE_YUV422_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, - 16, + 8, + 2, }, { MEDIA_BUS_FMT_YUYV8_2X8, DATA_TYPE_YUV422_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, - 16, + 8, + 2, }, { MEDIA_BUS_FMT_YVYU8_2X8, DATA_TYPE_YUV422_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, - 16, + 8, + 2, }, { MEDIA_BUS_FMT_SBGGR8_1X8, DATA_TYPE_RAW_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, 8, + 1, }, { MEDIA_BUS_FMT_SGBRG8_1X8, DATA_TYPE_RAW_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, 8, + 1, }, { MEDIA_BUS_FMT_SGRBG8_1X8, DATA_TYPE_RAW_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, 8, + 1, }, { MEDIA_BUS_FMT_SRGGB8_1X8, DATA_TYPE_RAW_8BIT, DECODE_FORMAT_UNCOMPRESSED_8_BIT, 8, + 1, }, { MEDIA_BUS_FMT_SBGGR10_1X10, DATA_TYPE_RAW_10BIT, DECODE_FORMAT_UNCOMPRESSED_10_BIT, 10, + 1, }, { MEDIA_BUS_FMT_SGBRG10_1X10, DATA_TYPE_RAW_10BIT, DECODE_FORMAT_UNCOMPRESSED_10_BIT, 10, + 1, }, { MEDIA_BUS_FMT_SGRBG10_1X10, DATA_TYPE_RAW_10BIT, DECODE_FORMAT_UNCOMPRESSED_10_BIT, 10, + 1, }, { MEDIA_BUS_FMT_SRGGB10_1X10, DATA_TYPE_RAW_10BIT, DECODE_FORMAT_UNCOMPRESSED_10_BIT, 10, + 1, }, { MEDIA_BUS_FMT_SBGGR12_1X12, DATA_TYPE_RAW_12BIT, DECODE_FORMAT_UNCOMPRESSED_12_BIT, 12, + 1, }, { MEDIA_BUS_FMT_SGBRG12_1X12, DATA_TYPE_RAW_12BIT, DECODE_FORMAT_UNCOMPRESSED_12_BIT, 12, + 1, }, { MEDIA_BUS_FMT_SGRBG12_1X12, DATA_TYPE_RAW_12BIT, DECODE_FORMAT_UNCOMPRESSED_12_BIT, 12, + 1, }, { MEDIA_BUS_FMT_SRGGB12_1X12, DATA_TYPE_RAW_12BIT, DECODE_FORMAT_UNCOMPRESSED_12_BIT, 12, + 1, } }; @@ -205,6 +222,67 @@ static irqreturn_t csid_isr(int irq, void *dev) } /* + * csid_set_clock_rates - Calculate and set clock rates on CSID module + * @csiphy: CSID device + */ +static int csid_set_clock_rates(struct csid_device *csid) +{ + struct device *dev = to_device_index(csid, csid->id); + u32 pixel_clock; + int i, j; + int ret; + + ret = camss_get_pixel_clock(&csid->subdev.entity, &pixel_clock); + if (ret) + pixel_clock = 0; + + for (i = 0; i < csid->nclocks; i++) { + struct camss_clock *clock = &csid->clock[i]; + + if (!strcmp(clock->name, "csi0") || + !strcmp(clock->name, "csi1")) { + u8 bpp = csid_get_fmt_entry( + csid->fmt[MSM_CSIPHY_PAD_SINK].code)->bpp; + u8 num_lanes = csid->phy.lane_cnt; + u64 min_rate = pixel_clock * bpp / (2 * num_lanes * 4); + long rate; + + camss_add_clock_margin(&min_rate); + + for (j = 0; j < clock->nfreqs; j++) + if (min_rate < clock->freq[j]) + break; + + if (j == clock->nfreqs) { + dev_err(dev, + "Pixel clock is too high for CSID\n"); + return -EINVAL; + } + + /* if sensor pixel clock is not available */ + /* set highest possible CSID clock rate */ + if (min_rate == 0) + j = clock->nfreqs - 1; + + rate = clk_round_rate(clock->clk, clock->freq[j]); + if (rate < 0) { + dev_err(dev, "clk round rate failed: %ld\n", + rate); + return -EINVAL; + } + + ret = clk_set_rate(clock->clk, rate); + if (ret < 0) { + dev_err(dev, "clk set rate failed: %d\n", ret); + return ret; + } + } + } + + return 0; +} + +/* * csid_reset - Trigger reset on CSID module and wait to complete * @csid: CSID device * @@ -249,6 +327,12 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) if (ret < 0) return ret; + ret = csid_set_clock_rates(csid); + if (ret < 0) { + regulator_disable(csid->vdda); + return ret; + } + ret = camss_enable_clocks(csid->nclocks, csid->clock, dev); if (ret < 0) { regulator_disable(csid->vdda); @@ -316,7 +400,8 @@ static int csid_set_stream(struct v4l2_subdev *sd, int enable) struct v4l2_mbus_framefmt *f = &csid->fmt[MSM_CSID_PAD_SRC]; u8 bpp = csid_get_fmt_entry(f->code)->bpp; - u32 num_bytes_per_line = f->width * bpp / 8; + u8 spp = csid_get_fmt_entry(f->code)->spp; + u32 num_bytes_per_line = f->width * bpp * spp / 8; u32 num_lines = f->height; /* 31:24 V blank, 23:13 H blank, 3:2 num of active DT */ @@ -719,7 +804,7 @@ int msm_csid_subdev_init(struct csid_device *csid, struct device *dev = to_device_index(csid, id); struct platform_device *pdev = to_platform_device(dev); struct resource *r; - int i; + int i, j; int ret; csid->id = id; @@ -766,26 +851,30 @@ int msm_csid_subdev_init(struct csid_device *csid, return -ENOMEM; for (i = 0; i < csid->nclocks; i++) { - csid->clock[i] = devm_clk_get(dev, res->clock[i]); - if (IS_ERR(csid->clock[i])) - return PTR_ERR(csid->clock[i]); - - if (res->clock_rate[i]) { - long clk_rate = clk_round_rate(csid->clock[i], - res->clock_rate[i]); - if (clk_rate < 0) { - dev_err(to_device_index(csid, csid->id), - "clk round rate failed: %ld\n", - clk_rate); - return -EINVAL; - } - ret = clk_set_rate(csid->clock[i], clk_rate); - if (ret < 0) { - dev_err(to_device_index(csid, csid->id), - "clk set rate failed: %d\n", ret); - return ret; - } + struct camss_clock *clock = &csid->clock[i]; + + clock->clk = devm_clk_get(dev, res->clock[i]); + if (IS_ERR(clock->clk)) + return PTR_ERR(clock->clk); + + clock->name = res->clock[i]; + + clock->nfreqs = 0; + while (res->clock_rate[i][clock->nfreqs]) + clock->nfreqs++; + + if (!clock->nfreqs) { + clock->freq = NULL; + continue; } + + clock->freq = devm_kzalloc(dev, clock->nfreqs * + sizeof(*clock->freq), GFP_KERNEL); + if (!clock->freq) + return -ENOMEM; + + for (j = 0; j < clock->nfreqs; j++) + clock->freq[j] = res->clock_rate[i][j]; } /* Regulator */ diff --git a/drivers/media/platform/qcom/camss-8x16/camss-csid.h b/drivers/media/platform/qcom/camss-8x16/camss-csid.h index 3186c11ac07d..4df70183c994 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-csid.h +++ b/drivers/media/platform/qcom/camss-8x16/camss-csid.h @@ -56,7 +56,7 @@ struct csid_device { void __iomem *base; u32 irq; char irq_name[30]; - struct clk **clock; + struct camss_clock *clock; int nclocks; struct regulator *vdda; struct completion reset_complete; diff --git a/drivers/media/platform/qcom/camss-8x16/camss-csiphy.c b/drivers/media/platform/qcom/camss-8x16/camss-csiphy.c index ed03775c9b3a..e9040b193486 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-csiphy.c +++ b/drivers/media/platform/qcom/camss-8x16/camss-csiphy.c @@ -158,6 +158,69 @@ static irqreturn_t csiphy_isr(int irq, void *dev) } /* + * csiphy_set_clock_rates - Calculate and set clock rates on CSIPHY module + * @csiphy: CSIPHY device + */ +static int csiphy_set_clock_rates(struct csiphy_device *csiphy) +{ + struct device *dev = to_device_index(csiphy, csiphy->id); + u32 pixel_clock; + int i, j; + int ret; + + ret = camss_get_pixel_clock(&csiphy->subdev.entity, &pixel_clock); + if (ret) + pixel_clock = 0; + + for (i = 0; i < csiphy->nclocks; i++) { + struct camss_clock *clock = &csiphy->clock[i]; + + if (!strcmp(clock->name, "csiphy0_timer") || + !strcmp(clock->name, "csiphy1_timer")) { + u8 bpp = csiphy_get_bpp( + csiphy->fmt[MSM_CSIPHY_PAD_SINK].code); + u8 num_lanes = csiphy->cfg.csi2->lane_cfg.num_data; + u64 min_rate = pixel_clock * bpp / (2 * num_lanes * 4); + long round_rate; + + camss_add_clock_margin(&min_rate); + + for (j = 0; j < clock->nfreqs; j++) + if (min_rate < clock->freq[j]) + break; + + if (j == clock->nfreqs) { + dev_err(dev, + "Pixel clock is too high for CSIPHY\n"); + return -EINVAL; + } + + /* if sensor pixel clock is not available */ + /* set highest possible CSIPHY clock rate */ + if (min_rate == 0) + j = clock->nfreqs - 1; + + round_rate = clk_round_rate(clock->clk, clock->freq[j]); + if (round_rate < 0) { + dev_err(dev, "clk round rate failed: %ld\n", + round_rate); + return -EINVAL; + } + + csiphy->timer_clk_rate = round_rate; + + ret = clk_set_rate(clock->clk, csiphy->timer_clk_rate); + if (ret < 0) { + dev_err(dev, "clk set rate failed: %d\n", ret); + return ret; + } + } + } + + return 0; +} + +/* * csiphy_reset - Perform software reset on CSIPHY module * @csiphy: CSIPHY device */ @@ -184,6 +247,10 @@ static int csiphy_set_power(struct v4l2_subdev *sd, int on) u8 hw_version; int ret; + ret = csiphy_set_clock_rates(csiphy); + if (ret < 0) + return ret; + ret = camss_enable_clocks(csiphy->nclocks, csiphy->clock, dev); if (ret < 0) return ret; @@ -616,7 +683,7 @@ int msm_csiphy_subdev_init(struct csiphy_device *csiphy, struct device *dev = to_device_index(csiphy, id); struct platform_device *pdev = to_platform_device(dev); struct resource *r; - int i; + int i, j; int ret; csiphy->id = id; @@ -671,30 +738,30 @@ int msm_csiphy_subdev_init(struct csiphy_device *csiphy, return -ENOMEM; for (i = 0; i < csiphy->nclocks; i++) { - csiphy->clock[i] = devm_clk_get(dev, res->clock[i]); - if (IS_ERR(csiphy->clock[i])) - return PTR_ERR(csiphy->clock[i]); - - if (res->clock_rate[i]) { - long clk_rate = clk_round_rate(csiphy->clock[i], - res->clock_rate[i]); - if (clk_rate < 0) { - dev_err(to_device_index(csiphy, csiphy->id), - "clk round rate failed: %ld\n", - clk_rate); - return -EINVAL; - } - ret = clk_set_rate(csiphy->clock[i], clk_rate); - if (ret < 0) { - dev_err(to_device_index(csiphy, csiphy->id), - "clk set rate failed: %d\n", ret); - return ret; - } + struct camss_clock *clock = &csiphy->clock[i]; - if (!strcmp(res->clock[i], "csiphy0_timer") || - !strcmp(res->clock[i], "csiphy1_timer")) - csiphy->timer_clk_rate = clk_rate; + clock->clk = devm_clk_get(dev, res->clock[i]); + if (IS_ERR(clock->clk)) + return PTR_ERR(clock->clk); + + clock->name = res->clock[i]; + + clock->nfreqs = 0; + while (res->clock_rate[i][clock->nfreqs]) + clock->nfreqs++; + + if (!clock->nfreqs) { + clock->freq = NULL; + continue; } + + clock->freq = devm_kzalloc(dev, clock->nfreqs * + sizeof(*clock->freq), GFP_KERNEL); + if (!clock->freq) + return -ENOMEM; + + for (j = 0; j < clock->nfreqs; j++) + clock->freq[j] = res->clock_rate[i][j]; } return 0; diff --git a/drivers/media/platform/qcom/camss-8x16/camss-csiphy.h b/drivers/media/platform/qcom/camss-8x16/camss-csiphy.h index e886e6d88fd2..ba8781122065 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-csiphy.h +++ b/drivers/media/platform/qcom/camss-8x16/camss-csiphy.h @@ -57,7 +57,7 @@ struct csiphy_device { void __iomem *base_clk_mux; u32 irq; char irq_name[30]; - struct clk **clock; + struct camss_clock *clock; int nclocks; u32 timer_clk_rate; struct csiphy_config cfg; diff --git a/drivers/media/platform/qcom/camss-8x16/camss-ispif.c b/drivers/media/platform/qcom/camss-8x16/camss-ispif.c index 31e00e534a6a..54d1946f5213 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-ispif.c +++ b/drivers/media/platform/qcom/camss-8x16/camss-ispif.c @@ -954,9 +954,14 @@ int msm_ispif_subdev_init(struct ispif_device *ispif, return -ENOMEM; for (i = 0; i < ispif->nclocks; i++) { - ispif->clock[i] = devm_clk_get(dev, res->clock[i]); - if (IS_ERR(ispif->clock[i])) - return PTR_ERR(ispif->clock[i]); + struct camss_clock *clock = &ispif->clock[i]; + + clock->clk = devm_clk_get(dev, res->clock[i]); + if (IS_ERR(clock->clk)) + return PTR_ERR(clock->clk); + + clock->freq = NULL; + clock->nfreqs = 0; } ispif->nclocks_for_reset = 0; @@ -969,10 +974,14 @@ int msm_ispif_subdev_init(struct ispif_device *ispif, return -ENOMEM; for (i = 0; i < ispif->nclocks_for_reset; i++) { - ispif->clock_for_reset[i] = devm_clk_get(dev, - res->clock_for_reset[i]); - if (IS_ERR(ispif->clock_for_reset[i])) - return PTR_ERR(ispif->clock_for_reset[i]); + struct camss_clock *clock = &ispif->clock_for_reset[i]; + + clock->clk = devm_clk_get(dev, res->clock_for_reset[i]); + if (IS_ERR(clock->clk)) + return PTR_ERR(clock->clk); + + clock->freq = NULL; + clock->nfreqs = 0; } for (i = 0; i < ARRAY_SIZE(ispif->line); i++) diff --git a/drivers/media/platform/qcom/camss-8x16/camss-ispif.h b/drivers/media/platform/qcom/camss-8x16/camss-ispif.h index 6a1c9bd65477..6659020525d1 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-ispif.h +++ b/drivers/media/platform/qcom/camss-8x16/camss-ispif.h @@ -60,9 +60,9 @@ struct ispif_device { void __iomem *base_clk_mux; u32 irq; char irq_name[30]; - struct clk **clock; + struct camss_clock *clock; int nclocks; - struct clk **clock_for_reset; + struct camss_clock *clock_for_reset; int nclocks_for_reset; struct completion reset_complete; int power_count; diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c index c62a1ba5dc3b..1c86b10e204b 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c +++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c @@ -243,25 +243,95 @@ #define SCALER_RATIO_MAX 16 -static const u32 vfe_formats[] = { - MEDIA_BUS_FMT_UYVY8_2X8, - MEDIA_BUS_FMT_VYUY8_2X8, - MEDIA_BUS_FMT_YUYV8_2X8, - MEDIA_BUS_FMT_YVYU8_2X8, - MEDIA_BUS_FMT_SBGGR8_1X8, - MEDIA_BUS_FMT_SGBRG8_1X8, - MEDIA_BUS_FMT_SGRBG8_1X8, - MEDIA_BUS_FMT_SRGGB8_1X8, - MEDIA_BUS_FMT_SBGGR10_1X10, - MEDIA_BUS_FMT_SGBRG10_1X10, - MEDIA_BUS_FMT_SGRBG10_1X10, - MEDIA_BUS_FMT_SRGGB10_1X10, - MEDIA_BUS_FMT_SBGGR12_1X12, - MEDIA_BUS_FMT_SGBRG12_1X12, - MEDIA_BUS_FMT_SGRBG12_1X12, - MEDIA_BUS_FMT_SRGGB12_1X12, +static const struct { + u32 code; + u8 bpp; +} vfe_formats[] = { + { + MEDIA_BUS_FMT_UYVY8_2X8, + 8, + }, + { + MEDIA_BUS_FMT_VYUY8_2X8, + 8, + }, + { + MEDIA_BUS_FMT_YUYV8_2X8, + 8, + }, + { + MEDIA_BUS_FMT_YVYU8_2X8, + 8, + }, + { + MEDIA_BUS_FMT_SBGGR8_1X8, + 8, + }, + { + MEDIA_BUS_FMT_SGBRG8_1X8, + 8, + }, + { + MEDIA_BUS_FMT_SGRBG8_1X8, + 8, + }, + { + MEDIA_BUS_FMT_SRGGB8_1X8, + 8, + }, + { + MEDIA_BUS_FMT_SBGGR10_1X10, + 10, + }, + { + MEDIA_BUS_FMT_SGBRG10_1X10, + 10, + }, + { + MEDIA_BUS_FMT_SGRBG10_1X10, + 10, + }, + { + MEDIA_BUS_FMT_SRGGB10_1X10, + 10, + }, + { + MEDIA_BUS_FMT_SBGGR12_1X12, + 12, + }, + { + MEDIA_BUS_FMT_SGBRG12_1X12, + 12, + }, + { + MEDIA_BUS_FMT_SGRBG12_1X12, + 12, + }, + { + MEDIA_BUS_FMT_SRGGB12_1X12, + 12, + } }; +/* + * vfe_get_bpp - map media bus format to bits per pixel + * @code: media bus format code + * + * Return number of bits per pixel + */ +static u8 vfe_get_bpp(u32 code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(vfe_formats); i++) + if (code == vfe_formats[i].code) + return vfe_formats[i].bpp; + + WARN(1, "Unknown format\n"); + + return vfe_formats[0].bpp; +} + static inline void vfe_reg_clr(struct vfe_device *vfe, u32 reg, u32 clr_bits) { u32 bits = readl_relaxed(vfe->base + reg); @@ -1767,6 +1837,138 @@ static irqreturn_t vfe_isr(int irq, void *dev) } /* + * vfe_set_clock_rates - Calculate and set clock rates on VFE module + * @vfe: VFE device + * + * Return 0 on success or a negative error code otherwise + */ +static int vfe_set_clock_rates(struct vfe_device *vfe) +{ + struct device *dev = to_device(vfe); + u32 pixel_clock[MSM_VFE_LINE_NUM]; + int i, j; + int ret; + + for (i = VFE_LINE_RDI0; i <= VFE_LINE_PIX; i++) { + ret = camss_get_pixel_clock(&vfe->line[i].subdev.entity, + &pixel_clock[i]); + if (ret) + pixel_clock[i] = 0; + } + + for (i = 0; i < vfe->nclocks; i++) { + struct camss_clock *clock = &vfe->clock[i]; + + if (!strcmp(clock->name, "camss_vfe_vfe")) { + u64 min_rate = 0; + long rate; + + for (j = VFE_LINE_RDI0; j <= VFE_LINE_PIX; j++) { + u32 tmp; + u8 bpp; + + if (j == VFE_LINE_PIX) { + tmp = pixel_clock[j]; + } else { + bpp = vfe_get_bpp(vfe->line[j]. + fmt[MSM_VFE_PAD_SINK].code); + tmp = pixel_clock[j] * bpp / 64; + } + + if (min_rate < tmp) + min_rate = tmp; + } + + camss_add_clock_margin(&min_rate); + + for (j = 0; j < clock->nfreqs; j++) + if (min_rate < clock->freq[j]) + break; + + if (j == clock->nfreqs) { + dev_err(dev, + "Pixel clock is too high for VFE"); + return -EINVAL; + } + + /* if sensor pixel clock is not available */ + /* set highest possible VFE clock rate */ + if (min_rate == 0) + j = clock->nfreqs - 1; + + rate = clk_round_rate(clock->clk, clock->freq[j]); + if (rate < 0) { + dev_err(dev, "clk round rate failed: %ld\n", + rate); + return -EINVAL; + } + + ret = clk_set_rate(clock->clk, rate); + if (ret < 0) { + dev_err(dev, "clk set rate failed: %d\n", ret); + return ret; + } + } + } + + return 0; +} + +/* + * vfe_check_clock_rates - Check current clock rates on VFE module + * @vfe: VFE device + * + * Return 0 if current clock rates are suitable for a new pipeline + * or a negative error code otherwise + */ +static int vfe_check_clock_rates(struct vfe_device *vfe) +{ + u32 pixel_clock[MSM_VFE_LINE_NUM]; + int i, j; + int ret; + + for (i = VFE_LINE_RDI0; i <= VFE_LINE_PIX; i++) { + ret = camss_get_pixel_clock(&vfe->line[i].subdev.entity, + &pixel_clock[i]); + if (ret) + pixel_clock[i] = 0; + } + + for (i = 0; i < vfe->nclocks; i++) { + struct camss_clock *clock = &vfe->clock[i]; + + if (!strcmp(clock->name, "camss_vfe_vfe")) { + u64 min_rate = 0; + unsigned long rate; + + for (j = VFE_LINE_RDI0; j <= VFE_LINE_PIX; j++) { + u32 tmp; + u8 bpp; + + if (j == VFE_LINE_PIX) { + tmp = pixel_clock[j]; + } else { + bpp = vfe_get_bpp(vfe->line[j]. + fmt[MSM_VFE_PAD_SINK].code); + tmp = pixel_clock[j] * bpp / 64; + } + + if (min_rate < tmp) + min_rate = tmp; + } + + camss_add_clock_margin(&min_rate); + + rate = clk_get_rate(clock->clk); + if (rate < min_rate) + return -EBUSY; + } + } + + return 0; +} + +/* * vfe_get - Power up and reset VFE module * @vfe: VFE Device * @@ -1779,6 +1981,10 @@ static int vfe_get(struct vfe_device *vfe) mutex_lock(&vfe->power_lock); if (vfe->power_count == 0) { + ret = vfe_set_clock_rates(vfe); + if (ret < 0) + goto error_clocks; + ret = camss_enable_clocks(vfe->nclocks, vfe->clock, to_device(vfe)); if (ret < 0) @@ -1791,6 +1997,10 @@ static int vfe_get(struct vfe_device *vfe) vfe_reset_output_maps(vfe); vfe_init_outputs(vfe); + } else { + ret = vfe_check_clock_rates(vfe); + if (ret < 0) + goto error_clocks; } vfe->power_count++; @@ -2074,7 +2284,7 @@ static void vfe_try_format(struct vfe_line *line, /* Set format on sink pad */ for (i = 0; i < ARRAY_SIZE(vfe_formats); i++) - if (fmt->code == vfe_formats[i]) + if (fmt->code == vfe_formats[i].code) break; /* If not found, use UYVY as default */ @@ -2241,7 +2451,7 @@ static int vfe_enum_mbus_code(struct v4l2_subdev *sd, if (code->index >= ARRAY_SIZE(vfe_formats)) return -EINVAL; - code->code = vfe_formats[code->index]; + code->code = vfe_formats[code->index].code; } else { if (code->index > 0) return -EINVAL; @@ -2544,7 +2754,7 @@ int msm_vfe_subdev_init(struct vfe_device *vfe, const struct resources *res) struct platform_device *pdev = to_platform_device(dev); struct resource *r; struct camss *camss = to_camss(vfe); - int i; + int i, j; int ret; /* Memory */ @@ -2587,23 +2797,30 @@ int msm_vfe_subdev_init(struct vfe_device *vfe, const struct resources *res) return -ENOMEM; for (i = 0; i < vfe->nclocks; i++) { - vfe->clock[i] = devm_clk_get(dev, res->clock[i]); - if (IS_ERR(vfe->clock[i])) - return PTR_ERR(vfe->clock[i]); - - if (res->clock_rate[i]) { - long clk_rate = clk_round_rate(vfe->clock[i], - res->clock_rate[i]); - if (clk_rate < 0) { - dev_err(dev, "clk round rate failed\n"); - return -EINVAL; - } - ret = clk_set_rate(vfe->clock[i], clk_rate); - if (ret < 0) { - dev_err(dev, "clk set rate failed\n"); - return ret; - } + struct camss_clock *clock = &vfe->clock[i]; + + clock->clk = devm_clk_get(dev, res->clock[i]); + if (IS_ERR(clock->clk)) + return PTR_ERR(clock->clk); + + clock->name = res->clock[i]; + + clock->nfreqs = 0; + while (res->clock_rate[i][clock->nfreqs]) + clock->nfreqs++; + + if (!clock->nfreqs) { + clock->freq = NULL; + continue; } + + clock->freq = devm_kzalloc(dev, clock->nfreqs * + sizeof(*clock->freq), GFP_KERNEL); + if (!clock->freq) + return -ENOMEM; + + for (j = 0; j < clock->nfreqs; j++) + clock->freq[j] = res->clock_rate[i][j]; } mutex_init(&vfe->power_lock); diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.h b/drivers/media/platform/qcom/camss-8x16/camss-vfe.h index 3651ece53caa..88c29d0dcafa 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.h +++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.h @@ -91,7 +91,7 @@ struct vfe_device { void __iomem *base; u32 irq; char irq_name[30]; - struct clk **clock; + struct camss_clock *clock; int nclocks; struct completion reset_complete; struct completion halt_complete; diff --git a/drivers/media/platform/qcom/camss-8x16/camss.c b/drivers/media/platform/qcom/camss-8x16/camss.c index 2dee77a80327..a3760b5dd1d1 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss.c +++ b/drivers/media/platform/qcom/camss-8x16/camss.c @@ -33,13 +33,19 @@ #include "camss.h" +#define CAMSS_CLOCK_MARGIN_NUMERATOR 105 +#define CAMSS_CLOCK_MARGIN_DENOMINATOR 100 + static const struct resources csiphy_res[] = { /* CSIPHY0 */ { .regulator = { NULL }, .clock = { "camss_top_ahb", "ispif_ahb", "camss_ahb", "csiphy0_timer" }, - .clock_rate = { 0, 0, 0, 200000000 }, + .clock_rate = { { 0 }, + { 0 }, + { 0 }, + { 100000000, 200000000 } }, .reg = { "csiphy0", "csiphy0_clk_mux" }, .interrupt = { "csiphy0" } }, @@ -49,7 +55,10 @@ static const struct resources csiphy_res[] = { .regulator = { NULL }, .clock = { "camss_top_ahb", "ispif_ahb", "camss_ahb", "csiphy1_timer" }, - .clock_rate = { 0, 0, 0, 200000000 }, + .clock_rate = { { 0 }, + { 0 }, + { 0 }, + { 100000000, 200000000 } }, .reg = { "csiphy1", "csiphy1_clk_mux" }, .interrupt = { "csiphy1" } } @@ -62,7 +71,14 @@ static const struct resources csid_res[] = { .clock = { "camss_top_ahb", "ispif_ahb", "csi0_ahb", "camss_ahb", "csi0", "csi0_phy", "csi0_pix", "csi0_rdi" }, - .clock_rate = { 0, 0, 0, 0, 200000000, 0, 0, 0 }, + .clock_rate = { { 0 }, + { 0 }, + { 0 }, + { 0 }, + { 100000000, 200000000 }, + { 0 }, + { 0 }, + { 0 } }, .reg = { "csid0" }, .interrupt = { "csid0" } }, @@ -73,7 +89,14 @@ static const struct resources csid_res[] = { .clock = { "camss_top_ahb", "ispif_ahb", "csi1_ahb", "camss_ahb", "csi1", "csi1_phy", "csi1_pix", "csi1_rdi" }, - .clock_rate = { 0, 0, 0, 0, 200000000, 0, 0, 0 }, + .clock_rate = { { 0 }, + { 0 }, + { 0 }, + { 0 }, + { 100000000, 200000000 }, + { 0 }, + { 0 }, + { 0 } }, .reg = { "csid1" }, .interrupt = { "csid1" } }, @@ -95,12 +118,35 @@ static const struct resources vfe_res = { .regulator = { NULL }, .clock = { "camss_top_ahb", "camss_vfe_vfe", "camss_csi_vfe", "iface", "bus", "camss_ahb" }, - .clock_rate = { 0, 320000000, 0, 0, 0, 0, 0, 0 }, + .clock_rate = { { 0 }, + { 50000000, 80000000, 100000000, 160000000, + 177780000, 200000000, 266670000, 320000000, + 400000000, 465000000 }, + { 0 }, + { 0 }, + { 0 }, + { 0 }, + { 0 }, + { 0 }, + { 0 } }, .reg = { "vfe0" }, .interrupt = { "vfe0" } }; /* + * camss_add_clock_margin - Add margin to clock frequency rate + * @rate: Clock frequency rate + * + * When making calculations with physical clock frequency values + * some safety margin must be added. Add it. + */ +inline void camss_add_clock_margin(u64 *rate) +{ + *rate *= CAMSS_CLOCK_MARGIN_NUMERATOR; + *rate = div_u64(*rate, CAMSS_CLOCK_MARGIN_DENOMINATOR); +} + +/* * camss_enable_clocks - Enable multiple clocks * @nclocks: Number of clocks in clock array * @clock: Clock array @@ -108,13 +154,14 @@ static const struct resources vfe_res = { * * Return 0 on success or a negative error code otherwise */ -int camss_enable_clocks(int nclocks, struct clk **clock, struct device *dev) +int camss_enable_clocks(int nclocks, struct camss_clock *clock, + struct device *dev) { int ret; int i; for (i = 0; i < nclocks; i++) { - ret = clk_prepare_enable(clock[i]); + ret = clk_prepare_enable(clock[i].clk); if (ret) { dev_err(dev, "clock enable failed: %d\n", ret); goto error; @@ -125,7 +172,7 @@ int camss_enable_clocks(int nclocks, struct clk **clock, struct device *dev) error: for (i--; i >= 0; i--) - clk_disable_unprepare(clock[i]); + clk_disable_unprepare(clock[i].clk); return ret; } @@ -135,12 +182,12 @@ error: * @nclocks: Number of clocks in clock array * @clock: Clock array */ -void camss_disable_clocks(int nclocks, struct clk **clock) +void camss_disable_clocks(int nclocks, struct camss_clock *clock) { int i; for (i = nclocks - 1; i >= 0; i--) - clk_disable_unprepare(clock[i]); + clk_disable_unprepare(clock[i].clk); } /* diff --git a/drivers/media/platform/qcom/camss-8x16/camss.h b/drivers/media/platform/qcom/camss-8x16/camss.h index 4619d7634207..4ad223443e4b 100644 --- a/drivers/media/platform/qcom/camss-8x16/camss.h +++ b/drivers/media/platform/qcom/camss-8x16/camss.h @@ -55,7 +55,7 @@ struct resources { char *regulator[CAMSS_RES_MAX]; char *clock[CAMSS_RES_MAX]; - s32 clock_rate[CAMSS_RES_MAX]; + u32 clock_rate[CAMSS_RES_MAX][CAMSS_RES_MAX]; char *reg[CAMSS_RES_MAX]; char *interrupt[CAMSS_RES_MAX]; }; @@ -89,8 +89,17 @@ struct camss_async_subdev { struct v4l2_async_subdev asd; }; -int camss_enable_clocks(int nclocks, struct clk **clock, struct device *dev); -void camss_disable_clocks(int nclocks, struct clk **clock); +struct camss_clock { + struct clk *clk; + const char *name; + u32 *freq; + u32 nfreqs; +}; + +void camss_add_clock_margin(u64 *rate); +int camss_enable_clocks(int nclocks, struct camss_clock *clock, + struct device *dev); +void camss_disable_clocks(int nclocks, struct camss_clock *clock); int camss_get_pixel_clock(struct media_entity *entity, u32 *pixel_clock); void camss_delete(struct camss *camss); |